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Indian Journal of Weed Science


Print ISSN: 0253-8050
Online ISSN: 0974-8164

NAAS rating: 5.17

Chief Editor

J.S. Mishra
Dr. J.S. Mishra
Principal Scientist, Division of Crop Research,
ICAR Research Complex for Eastern Region,
Bihar Veterinary College, Patna - 800014 (Bihar)
Mobile - +91 9494240904
Email- editorisws@gmail, jsmishra31@gmail.com

Associate editors

Bhagirath S. Chauhan

Dr. Bhagirath Singh Chauhan
Queensland Alliance for Agricultureand Food Innovation
Level 2, Queensland Bioscience Precinct
The University of Queensland
St Lucia QLD 4069, Australia
Email: b.chauhan@uq.edu.au
A.N. Rao
Dr. A.N. Rao
Hydarabad, INDIA
Mobile Number: +91 9440372165
Email: adusumilli.narayanarao@gmail.com

CALL FOR RESEARCH PAPER

Indian Journal of Weed Science is inviting your articles, review article, Research article and Research note on all topics of weed science. IJWS welcomes quality work that focuses on research, development and review. We are looking forward for strict compliance to the modern age standards in all these fields. Authors across the globe are welcome to submit their research papers in the prestigious journal fulfilling the requisite criterion.

Indian Journal of Weed Science (IJWS) is inviting papers for the VOL-53, ISSUE-1 March-(2021)


Article submission guideline

Enter your login details for IJWS below. If you do not already have an account you will need to.. Register here
Author login
  • Author Instruction
  • Style of Invited paper
  • Style of Research Article
  • Style of Research note

Paper Publication Process –

  • Manuscripts are received online in the editorial office with the certificate that MS has not been sent for consideration in any other journals for consideration.
  • Manuscripts are checked by office for its style and pattern and for plagiarism. If plagiarism is more than 20%, it is not considered and sent back to author for revision and re-submission.
  • If MS is found fit at Editorial office in context to plagiarism and style and pattern, it is sent to Chief Editor for further processing.
  • If chief Editor find the MS suitable for consideration, he shall suggest two name of referees as reviewers either from editorial board or from other institutions of concern discipline for reviewing the MS.
  • Editorial Office shall send the MS for double blind review to the reviewers suggested by Chief Editor.
  • Comments of double -blind reviewers will be sent to corresponding author without disclosing the identity of the reviewers to address the comments and re-submission of MS.
  • In case, one reviewer rejects while other accept the MS, it is sent to third reviewer suggested by Chief Editor.
  • Revised MS is again sent to reviewers to see whether their comments are addressed suitably.
  • On agreeing by the reviewers, the MS is again sent to Chief Editors with comments of reviewers and reply of author to take the final decision.
  • The final decision of Chief Editor is communicated to authors.

CALL FOR RESEARCH PAPER

Indian Journal of Weed Science is inviting your articles, review article, Research article and Research note on all topics of weed science. IJWS welcomes quality work that focuses on research, development and review. We are looking forward for strict compliance to the modern age standards in all these fields. Authors across the globe are welcome to submit their research papers in the prestigious journal fulfilling the requisite criterion.

Indian Journal of Weed Science (IJWS) is inviting papers for the VOL-51, ISSUE-4 December-(2019)


Article submission guideline

Enter your login details for IJWS below. If you do not already have an account you will need to.. Register here
Author login
  • Author Instruction
  • Style of Invited paper
  • Style of Research Article
  • Style of Research note

Paper Publication Process –

  • Manuscripts are received online in the editorial office with the certificate that MS has not been sent for consideration in any other journals for consideration.
  • Manuscripts are checked by office for its style and pattern and for plagiarism. If plagiarism is more than 20%, it is not considered and sent back to author for revision and re-submission.
  • If MS is found fit at Editorial office in context to plagiarism and style and pattern, it is sent to Chief Editor for further processing.
  • If chief Editor find the MS suitable for consideration, he shall suggest two name of referees as reviewers either from editorial board or from other institutions of concern discipline for reviewing the MS.
  • Editorial Office shall send the MS for double blind review to the reviewers suggested by Chief Editor.
  • Comments of double -blind reviewers will be sent to corresponding author without disclosing the identity of the reviewers to address the comments and re-submission of MS.
  • In case, one reviewer rejects while other accept the MS, it is sent to third reviewer suggested by Chief Editor.
  • Revised MS is again sent to reviewers to see whether their comments are addressed suitably.
  • On agreeing by the reviewers, the MS is again sent to Chief Editors with comments of reviewers and reply of author to take the final decision.
  • The final decision of Chief Editor is communicated to authors.
Read More

Guidelines for Authors

Indian Journal of Weed Science is a quarterly journal publishing original research article, research notes, opinion articles and review articles (invited or with prior approval of the title reflecting substantial contributions of the author) covering all areas of weed science research. All contributions must be of a sufficient quality to extend our knowledge in weed science.

The papers submitted should not have been published or communicated elsewhere. Authors will be solely responsible for the factual accuracy of their contribution. Manuscript should not carry any material already published in the same or different forms.

  • Style of Invited paper
  • Style of Research Article
  • Style of Research note

Format

Full length article should be suitably divided into the following sub-sections; ABSTRACT, Key words, INTRODUCTION, MATERIALS AND METHODS, RESULTS AND DISCUSSION and REFERENCES. The heading, introduction need not be mentioned in the text.

Title

The title of article should be informative but concise and should not contain abbreviations. It should indicate the content of the article essential for key word indexing and information retrieval. It should be set in small and bold letters. A good title briefly identifies the subject, indicates the purpose of study and introduces key terms and concepts. Title should not be started with the waste words like 'a study of', 'effect of', 'influence of' , 'some observations on', 'a note of' etc. The title should indicate preferably English name or most popular common name of the crops or organisms studied, wherever relevant. Scientific name can be given in abstract and introduction. Authority for such a name should be given at first mention in the text. A short title should be given for running headlines and should cover the main theme of the article.

Author(s) name(s) and affiliations

The name(s) of the author(s) should be given in small letters with sentence case separated by 'comma' or by 'and'. Institute name where the research was carried out should be given in italics. If authors are of different institutes, these can be mentioned by allotting number like 1, 2 or 3 as superscript over the name of author. The affiliation of such author may be given below of the corresponding author email address. Sometimes authors retire and change frequently and wish to give their current address, this should be given as foot note. Email address of main author or corresponding author should be given at the bottom.

Abstract

The abstract should contain at least one sentence on each of the following: objective of investigation (hypothesis, purpose, collection, result and conclusions). Give complete scientific name for plants or other organisms and full name of any symbol or abbreviations used. There is a need to mention place, name and priod of study in abstract. Emphasis should be given to highlight the results and the conclusion of the study. It should not exceed a total length of 200-250 words. Abstract should not have the words like 'will be explained or will be discussed'.

Key words

(5 6) should be given at the end of the abstract and should be arranged alphabetically. Each key word should be started with capital letter and separated by comma ( , ) from other words.

Introduction

Introduction should be brief and to the point, cover the problem and should justify the work or the hypothesis on which it is based. In introduction, a detail review is not necessary. However, to orient readers, important references about previous concepts and research should be given. It should briefly state the currently available information and should identify the research gap that is expected to be abridged through this investigation. Give preference to recent references from standard research publication unless it is of historical importance or a landmark in that field.

Materials and Methods

This part should begin with information relating to period/season/year and place of study, climate or weather conditions, soil type etc. Treatment details along with techniques and experimental design, replications, plot size etc. should be clearly indicated. Use of symbols for treatments may be avoided and an abbreviation should be fully explained at its first mention. Crop variety, methodology for application and common cultivation practices should be mentioned. Known methods may be just indicated giving reference but new techniques developed and followed should be described in detail. Methods can be divided into suitable sub-headings, typed in bold at first level and in italics at second level, if necessary.

Results and Discussion

Results may be reported and discussed together to avoid duplication. Do not mention and recite the data in the text as such given in the table. Instead interpret it suitably by indicating in terms of per cent, absolute change or any other derivations. Relate results to the objectives with suitable interpretation of the references given in the introduction. If results differ from the previous study, suitable interpretation and justification should be given. Repeated use of statements like 'our results are in agreement’ or ‘similar results were reported’ 'should be avoided. At the end of results and discussion, conclusion of the study should be given in 2-3 sentences along with suggestion for further study, if any. All statistical comparisons among treatments may be made at P=0.05 level of probability.

Acknowledgement

The authors may place on record the help and cooperation or any financial help received from any source, person or organization for this study. This should be very brief.

References

Only relevant and recent references of standard work should be quoted. Preference should be given to quote references of journals over proceedings or reports. In general, not more than 15 references should be quoted in full paper and 5 in short communication. However, in review article, emphasis should be given to quote more references with each valid statement/findings in the text. There is no need to give references for standard procedures of soil and plant analysis, and for routine statistical analysis in practice, only the methodology may be indicated. As a thumb rule, all the references quoted in the text must appear at the end of the article and vice-verse. It has been decided to use full name of the journal after the year 2011 onwards. Therefore, references should include names of all authors, year, full title of the article quoted, full name of the journal in italics (no abbreviations), volume number (in Bold), issue number (in brackets) and pages. For books, monographs, theses etc. full title in italics, publisher or university name, volume no., if any, and relevant page range or total no. of pages should be given. The list of references should be arranged alphabetically on author's names and chronologically per author. Author name should be started with surname and initial letter with capital letter. There is no need to separate author's initials by full stop but it should be given in capital letters without gap. Each author name should be separated by comma (,) and last author name by ‘and’. A few examples of correct citation of references for Indian Journal of Weed Science are given below:

Singh Samunder, Punia SS, Yadav A and Hooda VS. 2011. Evaluation of carfentrazone-ethyl + metsulfuron-methyl against broadleaf weeds of wheat. Indian Journal of Weed Science 43(1&2): 12-22.

Neeser C and Varshney Jay G. 2001. Purple nutsedge; biology and principles for management without herbicides, Indian Journal of Pulses Research 14(1): 10-19.

Naseema A, Praveena R and Salim AM. 2004. Ecofriendly management of water hyacinth with a mycoherbicide and cashew nut shell liquid. Pakistan Journal of Weed Science Research 10(1&2): 93-100.

Arya DR, Kapoor RD and Dhirajpant. 2008. Herbicide tolerant crops: a boon to Indian agriculture, pp 23-31. In: Biennial Conference on Weed Management in Modern Agriculture: Emerging Challenges and Opportunities. (Eds. Sharma RS, Sushilkumar, Mishra JS, Barman KK and Sondhia Shobha), 27-28 February 2008, Patna. Indian Society of Weed Science, Jabalpur.

Anonymous. 2006. Long-term herbicide trial in transplanted lowland rice-rice cropping system, pp 62-68. In: Annual Progress Report, AICRP on Weed Control, Tamil Nadu Agricultural University, Coimbatore.

DWSR. 2010. Annual Report, 2010-11, pp 35-37. Directorate of Weed Science Research, Jabalpur.

Gopal B and Sharma KP. 1981. Water hyacinth (Eichhornia crassipes) the most troublesome weeds of the world. Hindasia Publisher, New Delhi, 129 p.

Sushilkumar, Sondhia S and Vishwakarma K. 2003. Role of insects in suppression of problematic alligator weed (Altemanthera philoxeroides) and testing of herbicides for its integrated management. Final Report of ICAR Adhoc Project, 39 p.

For Web references: the full URL should be given and the date when the reference was last accessed. e.g. http://www.faostat.fao.org (accessed 21 May 2019)

Length

Full length manuscript should not exceed 4500 words including space required for figures, tables and list of references. Research note can be up to 2500 words, with not more than 2 figures or tables. One season/year data should invariably be presented as research notes only.

Units, abbreviations and nomenclature

For physical units, unit names and symbols, the SI system should be employed. Biological names should be given according to the latest international nomenclature. Upon its first use in the title, abstract and text, the common name of a weed should be followed by the scientific name (genus, species and authority) in parentheses. If no common name exists in English, the scientific name should be used only. At the first mention of an herbicide or other chemical substance, give its generic name only. Trade names should not be used. Biological and zoological names, gene designations and gene symbols should be italicized. Yield data should be reported in kg/ha or t/ha. All such letters such as viz., et al., in situ, ex situ, Rabi, Kharif, i.e., etc. should be italicized.

Tables and figures

Tables and figures should be concise and limited to the necessary minimum. We encourage the authors to set tables and figures at the appropriate places in the article but if it is not possible, the same may be given separately. The title should fully describe the contents of the table and explain any symbol or abbreviations used in it. The standard abbreviations of the units of different parameters should be indicated in parentheses. Vertical lines should not be given in the tables and horizontal lines should be used to separate parameters and end of the table.

Figures may be preferred in place of table. In no case the same data should be presented by both tables and figures. While presenting data through line graphs, vertical bars, cylinders, pie charts etc, the same should be preferred with black lines or bars having different clear symbols and shades. The graphs chosen with colours reproduce poorly and should not be given unless it became necessary.

Some useful tips

Avoid numerals and abbreviations at the beginning of a sentence. Don't use superscript for per hectare, ton or meter (kg ha-1 or t ha-1) instead use kg/ha or g/m2, t/ha, mg/g, ml/l etc. Prefer to mention yield data in t/ha only. If it becomes necessary, give yield in kg/ha but not in quintal. Don't use lakh, crores or arabs in text, instead give such figures in million. Only standard abbreviations should be used and invariably be explained at first mention. Avoid use of self-made abbreviations like iso., buta., rizo., etc. Don't use first letter capital for names of plant protection chemicals but it should be used for trade names. Use of treatment symbols like T1 T2 T3 etc. should be avoided. All weights and measurements must be in SI or metric units. Use % after double digit figures, not per cent, for example 10% not 10 per cent. In a series of range of measurement, mention the units only at the end, e.g. 3,4,5 kg/ha instead of 3 kg/ha, 4 kg/ha and 5 kg/ha. Nutrient doses as well as concentration in soil and plant should be given in elemental form only, i.e. P and K should not be given as P2O5 K2O. A variety may be mentioned within single quotes in italic such as 'Pusa Basmai', 'Kufri Sinduri' etc. Statistical data should be given in LSD (P=0.05) instead CD (P=0.05).

Authors are requested to see the recent issue of the journal to prepare the manuscript as per the journal's format.

Manuscript submission

Manuscripts must conform to the journal style (see the latest issue). Correct language is the responsibility of the author. After having received a contribution, there will be a review process, before the Chief Editor makes the definitive decision upon the acceptance for publication. Referee's comments along with editors comments will be communicated to authors as scanned copy/soft copy through email. After revision, author should send back the copy of revised manuscripts to the Chief Editor, ISWS by e-mail only.

Editorial Board reserves the right to suitably modify, accept or reject the MS in view on the reviewer's advice.

We encourage submission of paper only by electronically via E-mail as one complete word document file. When preparing your file, please use only Times New Roman font for text (title 16, all heads 14 and text of 12 point, double spacing with 1.5" margin all the sides) and Symbol font for Greek letters to avoid inadvertent character substitutions.

All manuscripts should be submitted Online (http://www.isws.org.in/login_IJWS.aspx). For authors unable to submit their manuscript online

To see sample copy to prepare the manuscript, please Log on: http://www.isws.org.in/IJWSn/Journal.aspx

Peer Review Policy

All published articles in Indian Journal of Weed Science (IJWS) are subjected to rigorous peer review processes based on initial editor screening and anonymized refereeing by two referees. The ultimate purpose of peer review is to sustain the originality and quality of research work and filtration of poor quality and plagiarized articles. Peer review assures research quality.

Paper Publication Process –

  • Manuscripts are received online in the editorial office with the certificate that MS has not been sent for consideration in any other journals for consideration.
  • Manuscripts are checked by office for its style and pattern and for plagiarism. If plagiarism is more than 20%, it is not considered and sent back to author for revision and re-submission.
  • If MS is found fit at Editorial office in context to plagiarism and style and pattern, it is sent to Chief Editor for further processing.
  • If chief Editor find the MS suitable for consideration, he shall suggest two name of referees as reviewers either from editorial board or from other institutions of concern discipline for reviewing the MS.
  • Editorial Office shall send the MS for double blind review to the reviewers suggested by Chief Editor.
  • Comments of double -blind reviewers will be sent to corresponding author without disclosing the identity of the reviewers to address the comments and re-submission of MS.
  • In case, one reviewer rejects while other accept the MS, it is sent to third reviewer suggested by Chief Editor.
  • Revised MS is again sent to reviewers to see whether their comments are addressed suitably.
  • On agreeing by the reviewers, the MS is again sent to Chief Editors with comments of reviewers and reply of author to take the final decision.
  • The final decision of Chief Editor is communicated to authors.

Peer Review Policy

The practice of peer review is to ensure that only good science is published. It is an objective process at the heart of good scholarly publishing and is carried out by all reputable scientific journals. Our reviewers therefore play a vital role in maintaining the high standards of the (Indian Journal of Weed Science) Journal of Management and Research and all manuscripts are peer reviewed following the procedure outlined below.

Initial manuscript evaluation

The Editors first evaluate all manuscripts. In some circumstances it is entirely feasible for an exceptional manuscript to be accepted at this stage. Those rejected at this stage are insufficiently original, have serious scientific flaws, have poor grammar or English language, or are outside the aims and scope of the journal. Those that meet the minimum criteria are passed on to experts for review.

Authors of manuscripts rejected at this stage will be informed within 2 weeks of receipt.

Type of Peer Review

The (Indian Journal of Weed Science) employs double blind review, where the reviewer remains anonymous to the authors throughout the process.

How the reviewer is selected

Reviewers are matched to the paper according to their expertise. Our reviewer database contains reviewer contact details together with their subject areas of interest, and this is constantly being updated.

Reviewer reports

Reviewers are asked to evaluate whether the manuscript:

  • Is original
  • Is methodologically sound
  • Follows appropriate ethical guidelines
  • Has results which are clearly presented and support the conclusions
  • Correctly references previous relevant work

Reviewers are not expected to correct or copyedit manuscripts. Language correction is not part of the peer review process. Reviewers are requested to refrain from giving their personal opinion in the "Reviewer blind comments to Author" section of their review on whether or not the paper should be published. Personal opinions can be expressed in the "Reviewer confidential comments to Editor" section.

How long does the peer review process take?

Typically the manuscript will be reviewed within 2-8 weeks. Should the reviewers' reports contradict one another or a report is unnecessarily delayed a further expert opinion will be sought. Revised manuscripts are usually returned to the Editors within 3 weeks and the Editors may request further advice from the reviewers at this time. The Editors may request more than one revision of a manuscript.

Final report

A final decision to accept or reject the manuscript will be sent to the author along with any recommendations made by the reviewers, and may include verbatim comments by the reviewers.
Chief Editor's Decision is final
Reviewers advise the Editors, who are responsible for the final decision to accept or reject the article.

Special Issues / Conference Proceedings

Special issues and/or conference proceedings may have different peer review procedures involving, for example, Guest Editors, conference organizers or scientific committees. Authors contributing to these projects may receive full details of the peer review process on request from the editorial office.

Becoming a Reviewer for the (Indian Journal of Weed Science)

If you are not currently a reviewer for the (Indian Journal of Weed Science) but would like to be considered as a reviewer for this Journal, please contact the editorial office by e-mail at (editorisws@gmail.com), and provide your contact details. If your request is approved and you are added to the online reviewer database you will receive a confirmatory email, asking you to add details on your field of expertise, in the format of subject classifications.

Editorial Board

Editorial office:

Office Manager, Indian Society of Weed Science, ICAR-Directorate of Weed Research, Maharajpur, Jabalpur, India 482 004

Publisher Address:

Secretary, Indian Society of Weed Science, ICAR-Directorate of Weed Research, Maharajpur, Jabalpur, India 482 004

Principal Scientist
Division of Crop Research
ICAR Research Complex for Eastern Region
Bihar Veterinary College, Patna - 800014 (Bihar)

Chief Editor J.S. Mishra 9494240904 jsmishra31@gmail.com

The University of Queensland
St Lucia QLD 4069, Australia

Associate Editor Bhagirath Singh Chauhan b.chauhan@uq.edu.au

Consultant,
ICRISAT,
International Crops Research Institute for Semi-Arid Tropics
Patancheru, Hyderabad

Associate Editor A.N. Rao 9440372165 adusumilli.narayanarao@gmail.com

Editors

Professor,
Department of Agronomy, CCSHAU,
Hisar-125 004 (Haryana)

Ashok Kumar Yadav 9416995523 aky444@gmail.com

Professor & Head,
Division of Agronomy
FoA, Main Campus,
Chatha, SKUAST-Jammu (J&K)

B.C. Sharma 9419152428 drbhagwati@gmail.com

Principal
Vanavarayar Institute of Agriculture
Affiliated to TNAU)
Manakkadavu, Pollachi-642103 (Tamil Nadu)

C. Chinnusamy 9443721575 chinnusamyc@gmail.com

Scientist,
ICAR - Directorate of Weed Research,
Jabalpur (Madhya Padesh)

Dibakar Ghosh 8989190213 dghoshagro@gmail.com

Principal Scientist
Department of Agronomy,
Assam Agricultural University
Jorhat - 785013 (Assam)

I.C. Barua 9435094326 iswar_barua@yahoo.co.in

Principal Scientist
PJTSAU, Hyderabad-30 (Telangana)

M. Madhavi 9491021999 molluru_m@yahoo.com

Assistant Agronomist
Directorate of Agriculture (Govt. of WB)
Kolkata 700001, West Bengal

Malay Kumar Bhowmick 9434239688 bhowmick_malay@rediffmail.com

Associate Professor
(Soil Science & Agrl. Chemistry)
Anbil Dharmalingam Agricultural College & Research Institute (TNAU),
Trichy (Tamil Nadu)

P. Janaki 9443936160 janakibalamurugan@rediffmail.com

Assistant Chemist (Residue),
Department of Agronomy,
Punjab Agricultural University
Ludhina-141 004 (Punjab)

Pervinder Kaur 9646105418 pervi_7@yahoo.co.in

Sr. Agronomist, Directorate of Extension Education
Punjab Agricultural University
Ludhiana – 141004 (Punjab)

Simerjeet Kaur 9814081108 simer@pau.edu

College of Horticulture,
Vellanikkara. Thrissur – 680 656, (Kerala)

T. Girija 9447004940 girijavijai@gmail.com

Principal Scientist,
Directorate of Maize Research,
Pusa Campus, New Delhi-110012

C.M. Parihar 9013172214 pariharcm@gmail.com

Indexing Indexing & Abstracting Services


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Volume- 50 | Issue-4 (Oct-Dec) | Year 2018

Weed control by pyrazosulfuron-ethyl and its influence on yield and economics of transplanted rice
Ankit Rana*, M.C. Rana, S.S. Rana, Neelam Sharma and Suresh Kumar
Research article | DOI: http://dx.doi.org/10.5958/0974-8164.2018.00067.9 | Volume: 50 Page No:309-314 |
Address & Email | Article preview | View PFD | Download

Abstract:

A field experiment was conducted on a silty clay loam soil at Palampur, Himachal Pradesh during Kharif 2016 and 2017 to assess pyrazosulfuron-ethyl as an alternative herbicide to manage weeds in transplanted rice. Ten treatments comprised of company released sample of pyrazosulfuron-ethyl at 10, 15, 20 and 30 g/ha was compared to its market sample at 10 and 15 g/ha, bispyribac- sodium at 20 and 40 g/ha, hand weeding twice and weedy check. Pyrazosulfuron-ethyl and bispyribac-sodium effectively reduced the biomass of Echinochloa colona, Echinochloa crusgalli and Cyperus difformis. These herbicides also suppressed the growth of Ammannia baccifera, but not to the extent as hand weeding twice. Pyrazosulfuron-ethyl curtailed Eclipta alba, but lower dose of bispyribac-sodium was not effective against it. In 2016, pyrazsulfuron-ethyl 20 g/ha gave significantly higher yield while in 2017, pyrazsulfuron-ethyl 30 g/ha  gave significantly higher yield of rice over other weed control treatments. Every gram weed biomass increase per square metre caused 5.6 kg/ha yield reduction of transplanted rice. Samples of pyrazosulfuron-ethyl obtained directly from the industry had an edge over the market samples. Weed persistence index was found to be decreased and crop resistance index increased corresponding to increase of dose of pyrazosulfuron-ethyl and bispyribac-sodium. The minimum weed index was under company’s pyrazosulfuron-ethyl at 20 g/ha followed by 15 g/ha, 30 g/ha and market’s sample at 15 g/ha. Cost of weed control was 3.0 to 4.7% of the total cost with pyrazosulfuron-ethyl and 6.1 to 9.8% with bispyribac-sodium. Company procured pyrazosulfuron-ethyl at 15 and 20 g during 2016 and at 20 and 30 g/ha during 2017 had higher net returns and marginal benefit cost ratio (MBCR). Eighty per cent of applied pyrazosulfuron-ethyl got degraded within 5 days of its application. Residues of pyrazosulfuron-ethyl in grain and straw at the time of harvest were below detectable level (BDL) irrespective of treatments.

Email

ankitr873@gmail.com

Address

Department of Agronomy, Forages and Grassland Management, CSK HPKV, Palampur, Himachal Pradesh 176 062
Entrapped pre-emergence oxadiargyl on growth and yield of rice under various agro-ecosystems
N. Bommayasamy* and C.R. Chinnamuthu
Research article | DOI: http://dx.doi.org/10.5958/0974-8164.2018.00068.0 | Volume: 50 Page No:315-319 |
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Abstract:

Field experiments were carried out in two locations, viz. Agricultural College and Research Institute, Tamil Nadu Agricultural University, Madurai and ICAR-Central Island Agricultural Research Institute, Port Blair, Andaman and Nicobar Islands during Kharif, 2016 and 2017 respectively to study the effect of entrapped pre-emergence oxadiargyl herbicide on the growth and yield of rice under various agro ecosystems. Weed control measures significantly reduced the density and dry weight of weeds in both the ecosystems. In mainland ecosystem, at 20 DAT, the highest reduction in weed density (61.8%) was noticed with the application of oxadiargyl encapsulated with starch which was comparable with the application of butachlor at 1.25 kg/ha on 3 DAT fb hand weeding on 40 DAT (60.8%). Whereas, under island ecosystem, the lowest total weed density (78.2%) was observed with the application of oxadiargyl loaded in zeolite which entrapped herbicides have increased sorption and decreased the dissipation of herbicide in soil which helps to release herbicide slowly through entire season for effective weed control. Application of butachlor at 1.25 kg/ha on 3 DAT fb hand weeding on 40 DAT recorded significantly higher number of productive tillers/m2 followed by the application of oxadiargyl loading with zeolite on 3 DAT. Weed free check has recorded significantly higher grain and straw yield in both ecosystems. The increase in grain yield with weed control treatment was ranged from 1.22 to 2.97 t/ha and 1.07 to 3.15 t/ha in main and island ecosystem, respectively compared to weedy check. The highest straw yield of 59.3 and 72.4% was recorded under weed free check as compared to weedy check in main and island ecosystem, respectively.

Email

samygs81@yahoo.co.in

Address

Department of Agronomy, AC and RI, TNAU, Madurai, Tamil Nadu 625 104
Weed and nitrogen management in direct-seeded rice
T.U. Patel*, K.J. Vihol, J.D. Thanki, N.N. Gudaghe and L.J. Desai
Research article | DOI: http://dx.doi.org/10.5958/0974-8164.2018.00069.2 | Volume: 50 Page No:320-323 |
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Abstract:

A field experiment was conducted during Kharif seasons of 2014, 2015 and 2016 with an objective to assess the feasibility of weed and nutrient management in direct-seeded rice. The experiment was laid out in a factorial RBD with eighteen treatment combinations including six weed management treatments, viz. pretilachlor, pendimethalin, pretilachlor followed by (fb) bispyribac-sodium, pendimethalin fb bispyribac-sodium, weed free and weedy check and three nitrogen (N) levels, viz. 80, 100 and 120 kg N/ha with three replications. Significantly lower weed biomass was recorded with weed free which [2 hand weedings (HW) at 20 and 40 days after seeding (DAS)] was at par with pendimethalin 1.0 kg/ha pre-emergence treatment (PE) fb bispyribac-sodium 0.04 kg/ha, post-emergence treatment (PoE). Similarly, the highest weed control efficiency (WCE, 73.0%) and the lowest weed index (WI) were also recorded with weed free treatment, followed by pendimethalin 1.0 kg/ha fb bispyribac sodium 0.04 kg/ha (WCE, 71.2%).  Rice growth and yield attributes, viz. plant height, effective tillers, panicles length, grains/panicle were improved significantly under combine application of  PE  and  PoE herbicides either pendimethalin 1.0 kg/ha or pretilachlor  0.75 kg/ha (PE) fb  bispyribac 0.04 kg/ha (PoE) and weed free [2 HW at 20 and 40 DAS]. Further, weed free treatment as well as pendimethalin 1.0 kg/ha fb bispyribac 0.04 kg/ha were found equally effective and recorded significantly higher rice grain and straw yield and nutrient use efficiency (NUE) with higher net returns compared to rest of treatments. Application of 120 kg N/ha significantly increased the plant height, effective tillers/plant, panicle length, grain/panicle, grain and straw yield, N content and NUE % over rest of the treatments in all aspects of yield and yield attributes. It was concluded that 2 HW at 20 and 40 DAS or application of pendimethalin 1.0 kg/ha fb bispyribac-Na 0.04 kg/ha for weed control appeared to be a viable strategy along with 120 kg N/ha for achieving higher and profitable yield of direct-seeded rice.

Email

tushagri.ank@nau.in

Address

N.M. College of Agriculture, Navsari Agricultural University, Navsari, Gujarat 396 450
Management of complex weed flora in transplanted rice by herbicide rotation and green manuring
S.S. Pinjari*, S.B. Gangawane, M.S. Jadhav, U.V. Mahadkar and S.A. Chavan
Research article | DOI: http://dx.doi.org/10.5958/0974-8164.2018.00070.9 | Volume: 50 Page No:324-328 |
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Abstract:

A field study was conducted at Dr. Balasdaheb Sawant Konkan Krishi Vidyapeeth, Dapoli (Maharashtra) during Kharif 2011 to 2014 to evaluate the effect of green manuring with Sesbania rostrata and different herbicide on complex weed flora in transplanted rice. The experimental field was infested with Ludwigia octovalis, Cloem viscosa, Cyperus iria, Amaranthus sessils, Isachne globosa and Eriocaulon hexangularis. Four year pooled data revealed that green manuring did not influence the dry matter of monocots and BLWs at all the stages of observation. Green manuring significantly influenced the grain and straw yields of rice and produced significantly higher grain and straw yields (3.86 grain and 3.87 straw t/ha) as compared to without green manuring. Pre-emergence application of pretilachlor-S 0.75 kg/ha at 3-7 DAT recorded the highest weed control efficiency (36.40% at 30 DAT and 48.18% at 50 DAT) and rice grain yield (3.54 t/ha).

Email

pinjari94222@gmail.com

Address

Dr. Balasaheb Sawant Konkan Krishi Vidyapeeth, Dapoli, Maharashtra 415 712
Interaction of different conservational practices and weed management on soil biological properties in rice-wheat system
Arunima Paliwal1*, V. Pratap Singh, S.P. Singh, Tej Pratap and Jai Prakash Bhimwal
Research article | DOI: http://dx.doi.org/10.5958/0974-8164.2018.00071.0 | Volume: 50 Page No:329-332 |
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Abstract:

Intensive tillage in the rice-wheat system affects soil microbial health by use of agrochemicals, particularly herbicides for control of weeds. Tillage and crop rotation also affects microbial immobilization of soil nutrients. Tillage and agrochemical load directly or indirectly affect the performance of different soil microbial health and its functions which supports the soil health, plant growth and ultimately crop performance. Thus, learning about the interaction of different conservational practices and weed management in terms of soil biological properties is extremely necessary. Hence, the present study was conducted at N.E. Borlaug Crop Research Centre of Govind Ballabh Pant University of Agriculture & Technology, Pantnagar (Uttarakhand) during 2015-16 to 2016-17 with 5 establishments methods of rice and 3 weed management practices under strip plot design with three replications. Conventional Agricultural practices with weed management practices had a significant impact on soil biological properties i.e. dehydrogenase activity, acid, and alkaline phosphatase activity, during both the years. The value of dehydrogenase, acid, and alkaline phosphatase activity was higher in zero till rice and wheat with retention of residues followed by Sesbania brown manuring in summers (ZTR+R-ZTW+R-ZTS) with a weedy check, during both the years of study.

Email

arunima.28@rediffmail.com

Address

Department of Agronomy, College of Forestry, Ranichauri, VCSG Uttarakhand University of Horticulture and Forestry, Bharsar, Uttarakhand 249 199
Penoxsulam + cyhalofop-butyl (premix) evaluation for control of complex weed flora in transplanted rice and its residual effects in rice-wheat cropping system
Dharam Bir Yadav*, Narender Singh, Anil Duhan, Ashok Yadav and S.S. Punia
Research article | DOI: http://dx.doi.org/10.5958/0974-8164.2018.00072.2 | Volume: 50 Page No:333-339 |
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Abstract:

Field experiments were conducted to evaluate the efficacy of penoxsulam 1.02% w/w (1.0% w/v) + cyhalofop-butyl 5.1% w/w (5.0% w/v) as post-emergence (PoE) in transplanted rice at CCS Haryana Agricultural University, Regional Research Station, Karnal during kharif 2010 to 2011, along with its phyto-toxicity on rice crop (Kharif 2010 to 2012), residual phyto-toxicity on wheat crop (Rabi 2010-11 to 2012-13), its residual studies in soil, straw and rice grains in lab (2017) and also multi-locational adaptive trials on rice during Kharif 2017. Penoxsulam + cyhalofop 135 g/ha reduced the density and dry weight of Echinochloa crusgalli and other aerobic grassy weeds (0.0- 3.3/m2 and 0.0-26.3 g/m2) and broad-leaf weeds (30.7-36.7/m2 and 0.0-4.7 g/m2) over its lower doses (105 and 120 g/ha) and was at par with its higher dose (150 g/ha), and it provided almost complete control of sedges during both the years. There was no significant effect of herbicidal treatments on the plant height and panicle length of the crop during both the years. Penoxsulam + cyhalofop 135 g/ha resulted in significantly higher number of effective tillers/ mrl (49.0 in 2010 and 53.3 in 2011) than cyhalofop 80 g/ha (33.8.0 in 2010 and 49.8 in 2011) and weedy check (27.0 in 2010 and 32.5 in 2011), and penoxsulam + cyhalofop 105 g/ha during 2011 (46.5 in 2010 and 51.5 in 2011). The grain yield in plots treated with penoxsulam + cyhalofop 135 g/ha (5.46 t/ha in 2010 and 5.53 t/ha in 2011) was higher than its lower doses (105 and 120 g/ha) and at par with higher dose (150 g/ha) during both the years. Penoxsulam + cyhalofop 135 g/ha provided grain yields similar to penoxsulam 22.5 g/ha, pretilachlor 750 g/ha, butachlor 1500 g/ha and weed free check; and higher than cyhalofop 80 g/ha, bispyribac-sodium 20 g/ha and weedy check during both the years. Weeds growing throughout the crop season caused 68.8% and 45.8% reduction in the grain yield during 2010 and 2011, respectively. Penoxsulam + cyhalofop 135 g/ha provided net returns (` 24945-29325/ha) and B-C ratio (1.80-1.91) almost similar/ higher to recommended PoE application of penoxsulam 22.5 g/ha (` 23756-29368/ha; 1.79-1.95). There was no phyto-toxicity of penoxsulam + cyhalofop even up to 600 g/ha on transplanted rice as well as succeeding wheat crop. Residues of penoxsulam + cyhalofop applied at 135 and 270 g/ha were below detectable level in soil, straw and grains of rice at harvest during 2010-11 to 2012-13. Penoxsulam + cyhalofop 135 g/ha applied at 15-20 DAT in rice (scented as well as coarse rice varieties) at 12 locations provided 92-97% control of weeds and average grain yield of 4.13 t/ha as compared to 3.83 t/ha in check herbicide bispyribac-sodium 25 g/ha. Penoxsulam + cyhalofop 135 g/ha resulted in average total monetary gain of ` 9665/ha and a net returns of ` 8465/ha. 

Email

dbyadav@gmail.com

Address

CCS Haryana Agricultural University, Hisar, 125 004
Weed management and rapeseed mustard productivity in conservation agriculture based rice - yellow mustard - greengram cropping system in lateritic belt of West Bengal
K. Charan Teja and B. Duary*
Research article | DOI: http://dx.doi.org/10.5958/0974-8164.2018.00073.4 | Volume: 50 Page No:340-344 |
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Abstract:

A field experiment was conducted during 2015-16 and 2016-17 at Agriculture Farm, Institute of Agriculture, Visva-Bharati, Sriniketan, West Bengal to study the effect of tillage and weed management practices on weed growth and productivity of yellow mustard in direct-seeded rice - yellow mustard - greengram cropping system. The experiment was laid out in a strip plot design with four horizontal tillage strips and three vertical weed management strips replicated thrice. Results revealed that conservational tillage (zero tillage + residue) along with recommended herbicide (RH) (pendimethalin at 0.75 kg/ha) + one hand weeding (HW) recorded the lower values of total weed density (6.20 and 6.43 no/m2) and dry weight (1.22 and 1.42 g/m2) and higher values of seed yield (1.20 and 1.46 t/ha) in first and second year, respectively. In second year, conservational tillage even with RH alone registered at par values of total weed density and dry weight with conventional tillage + RH + 1 HW and it also recorded 10.2% higher seed yield than conventional tillage + RH + 1 HW. Thus, conservation tillage along with recommended herbicide alone in yellow mustard appeared to be a promising technique with respect to weed suppression and productivity of yellow mustard in conservation agriculture based rice-mustard sarson-greengram cropping system.

 

Email

bduary@yahoo.co.in

Address

Institute of Agriculture, Visva-Bharati, Sriniketan, West Bengal 731 236
Herbicide mixtures for weed control in dual purpose tall wheat and pendimethalin residue in wheat fodder and soil
Meenakshi Sangwan*, V.S. Hooda, Jagdev Singh and Anil Duhan
Research article | DOI: http://dx.doi.org/10.5958/0974-8164.2018.00074.6 | Volume: 50 Page No:345-350 |
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Abstract:

Weeds are the biological constraints to increase wheat productivity in Asia. A field experiment was conducted during the Rabi seasons of 2015-16 and 2016-17 to evaluate the efficacy of pendimethalin, pinoxaden, metsulfuron, sulfosulfuron, clodinafop under sole, mixture and their sequential application against control of mixed weed flora in dual purpose wheat at area of farm CCS HAU Hisar (Haryana). The season-long growth of weeds reduced wheat yield up to 55.4 and 59.3% during 2015-16 and 2016-17, respectively. Before cutting of wheat for fodder, among herbicidal treatments, pre-emergence (PE) application of pendimethalin 1500 g/ha significantly reduced grassy (P. minor) and broad-leaf weeds dry weight at 25 and 55 days after sowing (DAS) during both the years. After cutting, weed dry weight at 85, 115 DAS and at harvest was significantly reduced under sequential application of pendimethalin 1500 g/ha fb pinoxaden + metsulfuron (50 + 4) at 2 week after cutting (WAC) at 55 DAS, pendimethalin 1500 g/ha fb sulfosulfuron + metsulfuron (30 + 2) at 2 WAC and pendimethalin 1500 g/ha fb clodinafop + metsulfuron (60 + 4) at 2 WAC as compared to alone application of post-emergence (PoE). Among herbicidal treatments, significantly higher weed control efficiency, plant height, total tillers, grain yield and B:C ratio was observed under sequential application of herbicides than alone application of herbicides during both the years of study. Wheat fodder could be used safely for livestock as no residue was reported.

Email

meenakshisangwan1991@gmail.com

Address

Chaudhary Charan Singh Haryana Agricultural University, Hisar 125 004
Control of Phalaris minor with sequential application of pre- and post-emergence herbicides and herbicide combinations in wheat
Raminder Kaur Hundal* and B.S. Dhillon
Research article | DOI: http://dx.doi.org/10.5958/0974-8164.2018.00075.8 | Volume: 50 Page No:351-354 |
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Abstract:

The field efficacy of pre- and post-emergence herbicides and rotational use of different group of herbicides were tested against Phalaris minor in wheat on farmers’ fields during the year 2015-16  and 2016-17. Clodinafop is being used by 64% farmers at Makowal and 44% at village Mallu Nangal from the last five years. None of the farmer was using pre-emergence herbicide. The higher herbicide dose (76% at site I and 80% at site II) coupled with hallow cone nozzle and less quantity of water (200-225 l/ha) resulted in poor control of P.minor. At site I, continuous use of clodinafop resulted in poor weed control efficiency (58.7%) with lower grain yield (4.46 t/ha). Sequential application of pre-emergence herbicide pendimethalin followed by post-emergence application of clodinafop provided effective control of P.minor (WCE 76.8%) and significantly higher yield (5.1 t/ha) over the existing farmers’ practices (2 sprays of clodinafop at 45 and 65 DAS). At the second site,compared to clodinafop with pendimethalin, mesosulfuron + iodosulfuron, fenoxaprop + metribuzin or sulfosulfuron resulted into higher yield with effective weed control efficiency. Highest yield was recorded with spray of mesosulfuron + iodosulfuron (5.1          t/ha) which was statistically at par with pendimethalin (5.06 t/ha), fenoxaprop+ metribuzin (5.01 t/ha) and sulfosulfuron at 15 DAS (4.98 t/ha).

Email

raminderkaurhundal@pau.edu

Address

Krishi Vigyan Kendra, Amritsar
Weed dynamics in conservation agricultural systems as influenced by conservation tillage and nutrient management practices under rainfed finger millet
Veeresh Hatti*, B.K. Ramachandrappa and Mudalagiriyappa
Research article | DOI: http://dx.doi.org/10.5958/0974-8164.2018.00076.X | Volume: 50 Page No:355-364 |
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Abstract:

Weeds are major threats for loss of yield in any cropping system. Especially in conservation tillage systems, it is a basic necessary requirement to keep the weed population below their threshold levels to realize optimum grain yields. Managing weeds in conservation tillage systems are very essential to optimize crop production. Hence, to study the effect of conservation tillage practices on weed dynamics, soil weed seed bank and their distribution, a field experiment was conducted under rainfed finger millet (Eleusine coracana (L.) Gaertn.) on Alfisols for two consecutive seasons during 2014 and 2015 at All India Coordinated Research Project on Dryland Agriculture, University of Agricultural Sciences, GKVK, Bengaluru, India under split-plot design with three main plots (different tillages) and five sub-plots (different nutrient management). Conventional tillage has recorded significantly higher grain and straw yield of finger millet (3.04 and 4.69 t/ha, respectively) due to effective control of weeds as evidenced by lower total weed density and dry weight observed (13.7 no./m2, 8.0 g/m2 at 30 DAS and 23.9 no./m2, 9.0 g/m2 at 60 DAS) along with higher weed control efficiency (92.5-93.2% in 2014 and 93.3-93.8% in 2015) and lower weed index (7.6-10.3%) due to lower number of weed seeds observed during 2014 (12.3, 19.5 and 4.6/kg soil at 15, 30 and 60 days, respectively) and 2015 (11.3, 17.6 and 4.1/kg soil at 15, 30 and 60 days, respectively as compared to minimum tillage (2.60 and 4.03 t/ha, respectively). Whereas, zero tillage has recorded significantly lower grain and straw yield (2.09 and 3.24 t/ha, respectively) due to poor weed control as observed by higher soil weed seed bank. Among different nutrient management practices application of 100% recommended NPK + 7.5 t FYM/ha yielded significantly higher grain and straw yields (3.03 and 4.68 t/ha, respectively) over other nutrient management practices. Wherein, the soil weed seed bank was not significantly influenced by nutrient management practices and their interactions with the tillage.

Email

veereshshatti@gmail.com

Address

AICRP on Dryland Agriculture, University of Agricultural Sciences, Gandhi Krishi Vijnana Kendra, Bengaluru, Karnataka 560 065
Variations in morpho-physiological traits of sweet corn in response to weed management
Prithwiraj Dey* and Tej Pratap
Research article | DOI: http://dx.doi.org/10.5958/0974-8164.2018.00077.1 | Volume: 50 Page No:365-368 |
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Abstract:

A field experiment was conducted in spring 2016 and 2017 at G.B.P.U.A&T, Pantnagar to evaluate the effect of different weed management practices on the morphological and physiological parameters of sweet corn (Zea mays L. var. ‘Sugar 75’), which determines the yield directly or indirectly. The experiment was comprised of twelve treatments. Effect of weed management practices were studied over several growth characters viz. plant height, crop dry matter accumulation, leaf area index, Fv/Fm value, crop growth rate, leaf chlorophyll content, yield, harvest index and nutrient uptake by crop. At 45 DAS, maximum crop height (57.5 cm), crop dry matter (776.5 g/m2), CGR (26.1 g/m2/day), LAI (6.71) and SPAD (60.4) records were obtained from twice hand weeding at 20 and 40 DAS. Fv/Fm value remained unaffected by weed interferences. A significant positive correlation of weed control efficiency was found with all the growth parameters However, weed dry matter accumulation and weed density impacted morpho-physiological characters and ultimate yield in a negative way.

Email

mailprithwi@gmail.com

Address

G.B. Pant University of Agriculture and Technology, Pantnagar, Uttarakhand 263 145
Weed management in blackgram
Pabitra Adhikary*
Research article | DOI: http://dx.doi.org/10.5958/0974-8164.2018.00078.3 | Volume: 50 Page No:369-372 |
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Abstract:

A replicated field experiment was conducted during 2016 and 2017 for selecting suitable herbicide for weed management in rainfed blackgram at Krishi Vigyan Kendra Farm, Ashokenagar, West Bengal, India. Among the herbicides tested, pre-emergence application (PE) of pendimethalin 1.0 kg/ha fb post-emergence application (PoE) quizalofop-ethyl 50 g/ha 25 days after seeding (DAS) resulted in lower weed density and higher weed control efficiency (92.10%) with an average seed yield of 0.82 t/ha, which was 48.35% grain yield over the control. Pendimethalin (PE) 1.0 kg/ha fb quizalofop-ethyl 50 g/ha (PoE) could be used for effective and economic weed control in blackgram in rainfed conditions.

Email

pabitra.bdp@gmail.com

Address

North 24 PGs Krishi Vigyan Kendra, WBUAFS, Ashokenagar, West Bengal 743 223
Weed management effect on growth and yield of sugarcane
Y.M. Ramesha*, Manjunatha Bhanuvally, D. Krishnamurthy and Ashok Kumar Gaddi
Research article | DOI: http://dx.doi.org/10.5958/0974-8164.2018.00079.5 | Volume: 50 Page No:373-376 |
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Abstract:

An experiment was conducted at Agricultural Research Station, Dhadesugur, UAS, Raichur, Karnataka during 2015-16 and 2016-17 to study the effect of weed control practices on growth and yield of sugarcane and its associated weeds. Dominant weeds were Echinochloa spp. (E. crus-galli and E. colona), Dactyloctenium aegyptium, Eleusine indica, Brachiaria spp. (B. mutica and B. ramosa) and Digitaria sanguinalis among grasses, Eclipta alba, Chenopodium album, Physalis minima, Ageratum conyzoides, Parthenium hysterophorus and Portulaca oleracea as broad-leaf weeds and Cyperus spp. (C. rotundus and C. iria) as sedges. Among the herbicidal treatments, pyrazosulfuron-ethy + metribuzin + 2,4-D sodium salt WDG (3000 g/ha) recorded significantly higher millable cane yield (119.5 t/ha) as compared to other treatments due to lower weed biomass (42.7 and 47.0 g/m2 at 45 and 75 DAP, respectively) and higher weed control efficiency at 45 and 75 DAP (86.4 and 85.5% at 45 and 75 DAP, respectively) during 2015-16. Similar trend was observed in 2016-17.

Email

rameshaym@gmail.com

Address

ARS, Dhadesugur-584 167, University of Agricultural Sciences, Raichur, Karnataka
Sequential application of herbicides for control of weeds in rainfed Bt cotton
D. Lakshmi Kalyani*, A. Sita Rama Sarma and Y. Rama Reddy
Research article | DOI: http://dx.doi.org/10.5958/0974-8164.2018.00080.1 | Volume: 50 Page No:377-381 |
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Abstract:

A field experiment was carried out for two consecutive years at the Research farm of Regional Agricultural Research Station, Nandyal during Kharif 2016-17 and 2017-18 with an objective to find out the effective and economic method of weed control in Bt cotton. Among different herbicide applications, pendimethalin 1.0 kg/ha as pre-emergence fb glyphosate 1.0 kg/ha as directed spray at 2-4 leaf stage weed + one hoeing at 50 DAS were significantly superior in reducing weed density and dry weight of weeds. The crop growth parameters (plant height, no of sympodia per plant), yield attributes (no. of bolls/m2 andboll weight) and seed cotton yield were recorded highest in weed free check (4.18 t/ha in 2016 and 3.23 t/ha in 2017) and was comparable with pendimethalin 1.0 kg/ha as pre-emergence fb glyphosate 1.0 kg/ha as directed spray at 2-4 leaf stage weed + one hoeing at 50 DAS. However, the lowest seed cotton yield was recorded under weedy check plot (1.62 t/ha in 2016 and 1.64 t/ha in 2017). Among weed control treatments, highest B:C ratio was recorded with application of pendimethalin 1.0 kg/ha as pre-emergence fb glyphosate 1.0 kg/ha as directed spray at 2-4 leaf stage weed+ one hoeing at 50 DAS closely fb weed free check.

 

Email

plakshmikalyani@gmail.com

Address

Regional Agricultural Research Station, Acharya N.G.Ranga Agricultural University, Nandyal, Andhra Pradesh 518 502
Dynamic strength based dryland weeders – ergonomic and performance evaluation
C.R. Chethan*, Subhash Chander and Satya Prakash Kumar
Research article | DOI: http://dx.doi.org/10.5958/0974-8164.2018.00081.3 | Volume: 50 Page No:382-387 |
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Abstract:

Human labour is a single costliest input in farming operations. Most of agricultural equipment designers regarded the operator as only another part of man-machine system and neglected their comfortness. Manually operated weeders are of push/pull type weeders, operated by application of force in dynamic motion. But, the existing dryland weeders designed based on static force exertion, even though they are in dynamic nature and require higher amount of force application than static ones. Hence, weeders of straight blade (apex angle 1800) and V blade (apex angle 900) were developed for dryland conditions based on the dynamic strength optimized under laboratory conditions. The ergonomical and field performance evaluation was conducted for developed weeders along with one existing twin wheel hoe. The developed weeders showed an increased field performance in terms of field capacity, weeding efficiency and performance index with minimum physiological responses over twin wheel hoe. There was an increase in weeding efficiency, field capacity and performance index by 5, 21 and 7 percent and 4, 21 and 6 percent for straight and V blade weeders, respectively over twin wheel hoe. Further, the physiological responses such as heart rate, oxygen consumption, energy expenditure, acceptable work load (AWL), limit of continuous performance (LCP), overall discomfort rating (ODR) and body part discomfort score (BPDS) were reduced by 5, 7, 8, 8, 9, 11 and 6 percent for straight blade and 5, 7, 8, 9, 10, 13 and 10 percent for V blade respectively over twin wheel hoe.

Email

chethan704@gmail.com

Address

Department of Farm Machinery and Power, AEC&RI, TNAU Coimbatore 641 003
Weed management effect in system of rice intensification
S. Rathika* and T. Ramesh
Research note | DOI: http://dx.doi.org/10.5958/0974-8164. | Volume: 50 Page No:388-390 |
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Abstract:

A field experiment was conducted at Anbil Dharmalingam Agricultural College and Research Institute, Thiruchirappalli during Rabi season 2014-15 to evaluate the weed management practices in system of rice intensification contisted 8 treatments with three replication. Pre-emergence (PE) application of bensulfuron-methyl 60 g/ha + pretilachlor at 600 g/ha on 3 days after transplanting (DAT) fb early post-emergence application of bispyribac-sodium at 25 g/ha on 20 DAT registered the minimum total weed density (6.6, 8.8 and 14.3/m2 at 30, 45 and 60 DAT, respectively) along with higher weed control efficiency (WCE). The highest grain and straw yields of 5.72 and 8.36 t/ha, respectively and net returns and BCR of ` 55436/ha and 2.44, respectively were obtained in application of the same treatment

Email

rathikaselvaraj@gmail.com

Address

Anbil Dharmalingam Agricultural College and Research Institute, Tamil Nadu Agricultural University, Thiruchirappalli, Tamil Nadu 620 027
Weed management in organically grown scented rice
Sachin Aske*, B.M. Maurya, Jugnahake Monika and S.M. Kurmvanshi
Research note | DOI: http://dx.doi.org/10.5958/0974-8164.2018.00083.7 | Volume: 50 Page No:391-394 |
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Abstract:

A field experiment on evaluation of weed management practices in scented rice under organic production system was conducted during 2017-18 at All India Coordinated Research Project on Farming System, College of Agriculture, Rewa (M.P.). Fimbristylis dichotoma was the most dominating weed in rice field followed by Jussia suffurusticosa. Incorporation of mustard oil cake at 5 t/ha along with one hand weeding gave maximum weed control efficiency (68%). Growth and development of rice was better with incorporation of mustard oil cake 15 days before sowing 5 t/ha + 1 hand  weeding (HW) followed by two HW at 20 and 40 days after transplanting (DAT) and locally available weed mulch Saccharum spontaneam at 3 t/ha + 1 hand weeding . These treatments gave 34 to 56% higher grain yield as compared to farmer’s practice of weed control as mulching with mango leaves. Net profit of ` 62061/ha was maximum in mulching with locally available weeds + 1 hand  weeding followed by ` 56695/ha in two HW at 20 and 40 DAT.

Email

sachinaske1992@gmail.com

Address

College of Agriculture, JNKVV, Rewa, Madhya Pradesh 486001
Comparative efficacy of herbicides against rock bulrush Schoenoplectus juncoides (Roxb.) Palla in wet-seeded rice
S. Fathima Umkhulzum, M. Ameena* and P. Shalini Pillai
Research note | DOI: http://dx.doi.org/10.5958/0974-8164.2018.00084.9 | Volume: 50 Page No:395-398 |
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Abstract:

Field experiment was conducted at the College of Agriculture, Vellayani during 2017- 2018 to assess the efficacies of pre-emergence, early post-emergence and post-emergence herbicides for managing rock bulrush Schoenoplectus juncoides (Roxb.) Palla, an emerging sedge weed in the lowland paddy fields of Kerala. A pre-emergence spray of bensulfuron-methyl + pretilachlor 60+ 600 g/ha at 4-7 days after sowing (DAS) was effective till 30 DAS with 93.3% reduction in weed count. At 45 and 60 DAS, lower weed density (2.09 and 3.15 no./m2, respectively) and weed dry weight (0.13 and 1.83 g/m2, respectively) were recorded for ethoxysulfuron 15 g/ha at 15 DAS fb HW at 40 DAS. Higher weed control efficiencies of 99.8% and 98.1% were obtained in plots treated with ethoxysulfuron 15 g/ha at 15 DAS fb HW at 40 DAS during critical stages of crop-weed competition (45 and 30DAS). Penoxsulam 22.5 g/ha at 15 DAS and ethoxysulfuron 15 g/ha at 15 DAS both fb HW at 40 DAS were on a par at 45 and 60 DAS in terms of weed control efficiency (99.1% and 97.9%, respectively. The weed removal of N, P and K (8.61, 3.13 and 10.95 kg/ha, respectively) were also lower with ethoxysulfuron 15 g/ha at 15 DAS fb HW at 40 DAS. The study revealed that rock bulrush could be effectively controlled by ethoxysulfuron 15 g/ha or penoxsulam 22.5 g/ha both at 15 DAS fb HW at 40 DAS.

Email

drameenaubaid@gmail.com

Address

Department of Agronomy, College of Agriculture, Vellayani, Kerala 695 522
Bio-efficacy of carfentrazone-ethyl 40% DF against weeds in wheat and its carryover effect on succeeding sorghum
S.S. Punia*, Sushil Kumar Singh and Todar Mal Poonia
Research note | DOI: http://dx.doi.org/10.5958/0974-8164.2018.00085.0 | Volume: 50 Page No:399-401 |
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Abstract:

Effects of different broad-leaf herbicides against complex weed flora in wheat and carryover effect on succeeding sorghum were evaluated at Agronomy Research Farm, CCS Haryana Agricultural University, Hisar during 2017-18. Application of different herbicides significantly reduced the dry weight of weeds compared to weedy check at different growth stages of crop. At 30 days after treatment (DAT), weed control efficiency (WCE) was higher with carfentrazone 20 g/ha (91.8%) compared to carfentrazone 10 g/ha (78.9%). Carfentrazone at different doses provide better control of weed as compared to 2,4-D amine at 60 DAT and at harvest. Number of tillers/m2 (401) and grain yield (6.11 t/ha) were recorded significantly higher with carfentrazone at 20 g/ha than carfentrazone at 10 g/ha (372 and 5.62 t/ha), 2,4-D amine at 500 g/ha (366 and 5.26 t/ha) and metsulfuron at 4 g/ha (389 and 5.79 t/ha), respectively. Also, there were no residual effect different herbicides on succeeding sorghum.

Email

puniasatbir@gmail.com

Address

Department of Agronomy, CCS Haryana Agricultural University, Hisar 125 004
Flauazifop-p-butyl against grasses in cotton and its residual effect on succeeding blackgram
A.S. Rao
Research note | DOI: http://dx.doi.org/10.5958/0974-8164.2018.00086.2 | Volume: 50 Page No:402-404 |
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Abstract:

A field experiment was conducted during rainy seasons of 2010-11 and 2011-12 at Guntur, Andhra Pradesh, India to evaluate the bio-efficacy of fluazifop-p-butyl against grassy weeds in cotton and its residual effect on succeeding crop of blackgram during the winter season. Results revealed that among different doses of fluazifop-p-butyl, post-emergence application of fluazifop-p-butyl 167 g/ha reduced grassy weed growth and recorded higher crop dry weight, yield components and seed cotton yield (1915 kg/ha) over its lower doses (100 and134 g/ha) but was on par with the highest dose of 335 g/ha in both the years. None of the doses of fluazifop-p-butyl including the highest dose (335 g/ha) did not cause any injury to cotton. In a field experiment, residual carry over effect of fluazifop-p-butyl at different doses of 100 to 335 g/ha was studied using blackgram as a succeeding crop. Differences were non-significant on plant population, plant height, crop dry weight and seed yield of blackgram indicating that there was no residual effect of fluazifop-p-butyl in the soil after harvesting of the cotton crop. It was concluded that the post- emergence application of fluazifop-p- butyl 167 g/ha was effective in controlling grassy weeds in cotton without any crop injury and residual effect on succeeding crop.

 

Email

atlurisrao@gmail.com

Address

Acharya N G Ranga Agricultural University, Integrated Weed Management Unit, RARS, Lam, Guntur, Andhra Pradesh 522 034
Metribuzin dissipation pattern in soil and its residue in soil and chilli
Kaberi Mahanta*, A. Sarma1 and J. Deka
Research note | DOI: http://dx.doi.org/10.5958/0974-8164.2018.00087.4 | Volume: 50 Page No:405-407 |
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Abstract:

Field study was carried out to determine the dissipation of metribuzin and its residues in soil and chilli. Vermicompost (2 t/ha) was used as organic amendments to enhance the degradation. Metribuzin was applied at single and double the dose of 500 and 1000 g/ha. The chilli variety ‘Krishna Jolokia’ was grown with a recommended practices. The recoveries obtained for untreated soil and chilli were in acceptable range of (80.6–85.7%) and (86.8–92.2%) of the metribuzin standards and spiked samples. The limit of detection (LOD) – 0.003 µg/g and the limit of quantification (LOQ) – 0.01µg/g in soil and chilli. The metribuzin residue level ranged 0.153 – 0.356 µg/g on the day of application of metribuzin and further degraded to 0.023 – 0.087 µg/g on the 21st day of application. However, the half-life of metribuzin was observed to be 7 and 10 days with single and double the dose of application of metribuzin. Metribuzin residues did not persisted in soil beyond 30 days after application and in fruits.

Email

kaberi.jorhat@gmail.com

Address

Department of Agronomy, Assam Agricultural University, Jorhat, Assam 785 013
Integrated weed management in summer sorghum
Bachcha Ram Verma, H.M. Virdia and Dinesh Kumar*
Research note | DOI: http://dx.doi.org/10.5958/0974-8164.2018.00088.6 | Volume: 50 Page No:408-410 |
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Abstract:

A field experiment was conducted at College Farm, Navsari Agricultural University, Navsari (Gujarat) during summer season 2016 to study the effect of integrated weed management practices on weed density, weed dry weight and economics in sorghum. The experiment was laid out in randomized block design with three replications and ten treatments with pre- and post-emergence herbicides (atrazine, 2,4-D and metsulfuron-methyl) alone or combination of these herbicides followed by hand weeding and inter-culturing operation. That two hand weeding and inter-culturing operations at 20 and 40 DAS significantly reduced weed density and dry weight of broad-leaved, grassy and sedge weeds. Weed control efficiency was recorded to the range of 52.50 - 97.00%, with the highest value in two hand weeding and inter-culturing operations at 20 and 40 DAS and lowest in atrazine 0.50 kg/ha as pre-emergence fb metsulfuron-methyl 6 g/ha as post-emergence. Higher net return of ` 54623/ha was obtained with two hand weeding and inter-culturing operations at 20 and 40 DAS followed by ` 50179/ha with atrazine 0.50 kg/ha as pre-emergence fb atrazine 0.50 kg/ha as post-emergence at 25 DAS.

 

Email

sirvidkagro@gmail.com

Address

Department of Agronomy, N.M. College of Agriculture, Navsari Agricultural University, Navsari, Gujarat 396 450

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