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Indian Journal of Weed Science


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

NAAS rating: 5.84

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

Paper TypeMaximum Length (including tables and figures)
Research Article6000 words
Research note4000 words
Review8000 words
Mini-Review5000 words

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- 47 | Issue-1 (Jan-Mar) | Year 2015

Weed management in rice as influenced by nitrogen application and herbicide use
Raghubar Sahu, Manoj Kumar Singh and Mahendra Singh
Full length articles | DOI: | Volume: 47 Page No:1-5 |
Address & Email | Article preview | View PFD | Download

Abstract:

A field experiment was conducted for two consecutive rainy seasons of 2010 and 2011 at Varanasi (U.P.) to evaluate the effect of nitrogen application and weed management on transplanted rice and associated weeds. Puddled transplanting recorded significantly reduced weed density and heigher weed control efficiency at 60 days after transplanting (DAT) as compared to unpuddled transplanting. Butachlor 1.5 kg/ha followed by cono-weeding at 20 and 40 DAT recorded significantly higher plant height, no. of tillers/hill, dry matter accumulation, leaf area index, 1000-grain weight, no. of panicles/hill, grains/panicle and grain yield as compared to pretilachlor 0.75 kg/ha followed by azimsulfuron 35 g/ha at 15 DAT,  and butachlor 1.5 kg/ha followed by azimsulfuron 35 g /ha at 15 DAT. Significantly higher yield components and rice grain yield were recorded with the application of 1/4 at 10 DAT, 1/2 at tillering and 1/4 N at panicle initiation as compared to conventional scheduling of nitrogen application.

Email

mksingh194.m@gmail.com

Address

Department of Agronomy, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh 221 005
Crop establishment and weed managment effects on rice productivity and weed dynamics
C. Sangeetha, A. Velayutham, N. Thavaprakaash and C. Chinnusamy
Full length articles | DOI: | Volume: 47 Page No:6-10 |
Address & Email | Article preview | View PFD | Download

Abstract:

A field experiment was conducted in strip-plot design with three crop establishment techniques and six weed management practices to study the effect of crop establishment and weed management on weeds and yield of lowland rice at Coimbatore during Rabi 2011-12 and 2012-13. The field was dominated by Echinochloa colona, Cyperus difformis, Eclipta alba, Marselia quadrifoliata and Ammania baccifera. The results revealed that  machine planting (30 x 20 cm) and subsequent cono-weeding at 10, 20, 30 and 40 days after transplanting (DAT) registered lower density and biomass of sedges, grasses, broad-leaved and total weeds resulting in higher grain yield than other treatments. Weed control efficiency  (93.2 and 90.8% in 2011-12, and 2012-13, respectively) was higher with this treatment compared with the other treatments. Next best treatment was the machine planting with pretilachlor (0.75 kg/ha at 3 DAT) + bispyribac-sodium (20 g/ha at 15 DAT) + cono-weeding at 40 DAT.

Email

chandrusan2007@gmail.com

Address

Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore Tamil Nadu 641 003
Taxonomic diversity, distribution pattern and management implications of weed flora in rice fields of Kashmir Valley
Aijaz Hassan Ganie, Bilal A. Tali, Anzar A. Khuroo, Zafar A. Reshi and B.A. Wafai
Full length articles | DOI: | Volume: 47 Page No:11-15 |
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Abstract:

Invasion by problematic weed species is one of the major contributors in the loss of potential yield in rice cultivation. Therefore, weed flora associated with rice crop in Kashmir Valley was investigated. Based on extensive field surveys carried out during 2010-2013, the present study revealed that 40 plant species were growing as weeds in rice fields of Kashmir Valley, which belonged to 27 genera in 19 families. The actual weeds of rice (40 species) and the weeds (58 species) growing along raised bunds and in between undulated lands of rice fields were recorded. Six species have been reported for the first time as rice weeds. For each weed species, crucial data on growth form, life span, flowering and fruiting months, breeding and dispersal mechanisms were obtained. Weed species growing commonly in the rice fields of Kashmir Valley, as well as those growing rarely were identified. Though weed species were distributed throughout the region, the overall taxonomic diversity of weed flora in rice fields were drastically declined from North to South in Kashmir Valley. Based on the data obtained on diversity and distribution of weed flora, the paper also discusses long-term weed management in the rice fields of Kashmir Valley.

Email

aijazku@gmail.com

Address

Department of of Botany, University of Kashmir, Hazratbal, Srinagar, Jammu & Kashmir 190 006
Weed density and diversity in jute under long-term experiment in jute-rice-wheat cropping system
Mukesh Kumar, D.K. Kundu, A.K. Ghorai, Sonali P. Mazumdar and M. Ramesh Naik
Full length articles | DOI: | Volume: 47 Page No:16-20 |
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Abstract:

Studies on the impact of long-term fertilizer application on changes in weed community composition are important and likely to provide insight into the effects of prolonged fertilizers on weed community structure and infestation. Nine treatments of long term fertilizers experiment, viz. (i) control (plots which did not receive NPK fertilizers or farm yard manures (FYM) (ii) 50% of recommended doses of NPK (iii) 100% NPK (recommended dose of fertilizers) (iv) 150% NPK, (v) 100% NPK + hand weeding (No herbicides application in jute, rice and wheat (vi) 100% NPK + Zn (vii) 100% NP, (viii) 100%N (ix) 100% NPK+FYM 10 t/ha/year before sowing of jute with four replication were included in the present investigation. A total of 12 weed species were recorded under different fertilizer treatments. Significantly higher total weed density (733/m2) was recorded in 100% NPK + FYM treatments compared to other treatments. Significant variation in weed species was also recorded in different fertilizers treatment. Cyperus rotundus density was comparatively higher in control, 50% NPK and 100% NPK + Hand weeding plot. Echinochloa colona density was higher in 150% NPK, 100% NPK + Zn and 100% NP. Comparatively higher broad-leaved weed density were recorded in 100% NPK + FYM. The highest Shannon-weiner index (H’=2.02), Simpson diversity index (D’=0.81) and weed species evenness (E’=0.81) were recorded in 100% NPK + FYM and the lowest (H’=1.0, D’=0.62 and E’=0.5) in control plot. Thus, weed management strategies in FYM applied jute field should be given highest priority for getting higher fibre yield.

Email

mukesh.agro@gmail.com

Address

ICAR-Central Research Institute for Jute and Allied Fibres, Barrackpore, West Bengal 700 120
Control of complex weed flora in wheat by metribuzin + clodinafop application
Rohitashav Singh*, A.P. Singh, Sumit Chaturvedi, Rekha, Ram Pal and Jodh Pal
Full length articles | DOI: | Volume: 47 Page No:21-24 |
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Abstract:

A field experiment was carried out at Pantnagar during Rabi season of 2010-11 and 2011-12 to test the efficacy of different doses of metribuzin 42% + clodinafop-propargyl 12% WG in wheat and associated weeds. The soil of the experimental field was clay loam in texture, medium in organic carbon (0.67%), available phosphorus (29.6 kg/ha) and potassium (176.4 kg/ha) with pH 7.2. Results revealed that metribuzin + clodinafop-propargyl 500 g/ha was significantly at par with its higher dose at 600g/ha, and two hand weedings at 30 and 50 DAS recorded the lowest density of Phalaris minor and Chenopodium album, Coronopus didymus, Melilotus spp., Rumex spp. and Fumaria parviflora at 30 and 60 days after application as compared to rest of the treatments. Maximum grain yield was recorded in metribuzin 42%+ clodinafop-propargyl at 600 g/ha, which was statistically at par with its lower dose of 500 g/ha due to effective control of grassy and broad-leaf weeds in wheat.

 

 

Email

rohitash_1961@rediffmail.com

Address

Department of Agronomy, College of Agriculture, G.B. Pant University of Agriculture and Technology Pantnagar, Uttarakhand 263 145
Comparative efficacy of post-emergence herbicides on yield of wheat
V. Pratap Singh*, Tej Pratap, S.P. Singh, Abnish Kumar, Akshita Banga, Neema Bisht, Neeshu and Kavita
Full length articles | DOI: | Volume: 47 Page No:25-27 |
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Abstract:

Weeds are one of the most important factors that impose a great threat to crop yield. In order to alleviate weed infestation in wheat (Triticum aestivum L.), efficacy of various doses of ACM 9 were tested during Rabi 2010 to 2011 at Norman E. Borlough Crop Research Center, Pantnagar, Uttarakhand. Results revealed that ACM 9 applied at 1000 and 1200 g/ha severely reduced total density and dry weight of weeds as compared to control, while poor weed control was achieved using clodinafop 400 g/ha and metribuzin 300 g/ ha. Highest grain yield of wheat was recorded with ACM 9 at 1200 g/ha (4.09 t/ha) during 2010 while in 2011, it was with ACM 9 at 1000 g/ha (4.16 t/ha). Post-emergence application of ACM 9 at 1200 and 1000 g/ha caused increase in wheat yield (18.2 and 97.4% during 2010 and 2011, respectively) over control. Highest number of spike and grains per spike were obtained from plots treated with ACM 9 at 1200 and 1000 g/ha as post-emergence. Based on the depressed wheat yield obtained, clodinafop 400 g/ha and metribuzin 300 g/ha can be said to be phytotoxic to crop plants.

 

 

Email

vpratapsingh@rediffmail.com

Address

Department of Agronomy, College of Agriculture, G.B. Pant University of Agriculture & Technology, Pantnagar, Uttarakhand 263 145
Management of mixed weed flora in barley with tank-mix application of isoproturon with metsulfuron and 2,4-D
S.C. Negi and Pankaj Chopra
Full length articles | DOI: | Volume: 47 Page No:28-30 |
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Abstract:

A field experiment was conducted with eight treatments comprising individual application of isoproturon 0.75 and 1.00 kg/ha and tank mix application of isoproturon 0.75 and 1.00 kg/ha with metsulfuron 0.004 kg/ ha each and isoproturon 1.00 and 1.25 kg/ha with 2,4-D 0.50 kg/ha each including hand weeding twice and a weedy check. All herbicidal treatments resulted in significant reduction of count and dry matter of total weeds, thereby giving significantly higher grain yield of barley over weedy check. Application of isoproturon + metsulfuron 1.00 + 0.004 kg/ha and isoproturon + 2,4-D 1.25 + 0.5 kg/ha was statistically similar to hand weeding twice with significant reduction of weed count and dry matter resulting in higher weed control efficiency. Tank mix application of all combinations gave significantly higher grain yield of barley. However, isoproturon + metsulfuron 1.00 + 0.004 kg/ha recorded similar higher grain yield of 1.72 t/ha as comparable to hand weeding twice (1.72 kg/ha), which was 8.6 to 27.3 % higher over remaining herbicide treatments. Highest net returns due to weed control and marginal benefit cost ratio of Rs 4661/ ha and 2.32, respectively was obtained with isoproturon + metsulfuron 1.00 + 0.004 kg/ha followed by isoproturon + metsulfuron 0.75 + 0.004 kg/ha with corresponding values of Rs 3560/ha and 1.86.

 

 

Email

drscnegi@yahoo.in

Address

Department of Agronomy, Forages and Grassland Management, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur, Himachal Pradesh 176 062
Weed control in soybean with propaquizafop alone and in mixture with imazethapyr
Susmita Panda, Shyam Lal, M.L. Kewat*, J.K. Sharma and Mukesh Kumar Saini
Full length articles | DOI: | Volume: 47 Page No:31-33 |
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Abstract:

A field experiment was conducted at the Product Testing Unit, JNKVV, Jabalpur during Kharif season 2013 and 2014 to adjudge the efficacy of propaquizafop and imazethapyr mixture against weeds in soybean. Grassy weeds were predominant (76.25%) in the experimental field compared with broadleaved weeds (23.75%). However, Echinochloa colona (33.90%) and Dinebra retroflexa (23.90%) were predominant in soybean but, other weeds (Cyperus rotundus, Cynodon dactylon, Alternanthera philoxeroides, Eclipta alba and Mollugo pentaphylla) were also present. Post-emergence application of propaquizafop (75 g/ha) alone curbed only grassy weeds. However, its efficacy was improved when applied in combination with imazethapyr being higher under propaquizafop + imazethapyr mixture applied at 53 + 80 g/ha or higher rate (56 + 85 g/ha). Yield attributing characters and yield were superior under propaquizafop + imazethapyr mixture applied at 56 + 85 g/ha followed by 53 + 80 g/ha which were comparable to hand weeding twice at 20 and 40 DAS.

 

 

Email

mlkewat1958@rediffmail.com

Address

Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur, Madhya Pradesh 482 004
Integrated weed management in blackgram
M.K. Bhowmick, B. Duary*1 and P.K. Biswas1
Full length articles | DOI: | Volume: 47 Page No:34-37 |
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Abstract:

A field experiment was conducted during Kharif, 2005 and 2006 at the Pulses and Oilseeds Research Substation, Beldanga, Murshidabad, West Bengal to evolve an integrated weed management (IWM) practice in blackgram. Cynodon dactylon, Dactyloctenium aegyptium, Cyperus rotundus, Cleome viscosa and Physalis minima were the dominant weeds. Pre-emergence application of pendimethalin either at lower dosage (0.75 kg/ha) along with one hand weeding at 40 days after sowing or at higher dosage (1.0 kg/ha) without any integration with hand weeding proved to record higher seed yield (1.09 and 1.03 t/ha, respectively. In addition, use of 30% higher seed rate than the normal rate of 22.0 kg/ha was found to effectively suppress the weeds and further enhance the yield level. Season-long weed competition caused an average yield reduction of 26.4% as compared to IWM in blackgram.

 

 

Email

bduary@yahoo.co.in

Address

Rice Research Station, Chinsurah, Hooghly, West Bengal 712 102
Effect of herbicides on weeds growth and yield of greengram
Guriqbal Singh*, Harpreet Kaur, Navneet Aggarwal and Poonam Sharma
Full length articles | DOI: | Volume: 47 Page No:38-42 |
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Abstract:

A field experiment was conducted during Kharif season of 2009 and 2010 to study t-he effect of pre- and post-emergence herbicides on weeds, growth, symbiotic traits and grain yield of greengram. Postemergence application of imazethapyr at 75 g/ha 17 days after sowing was found to be effective for controlling sedges, grassy and broad-leaf weeds as well as in improving grain yield of greengram and net returns whereas imazethapyr at lower doses (25 and 40 g/ha), did not control weeds effectively. Weed free and two hand weeding treatments gave higher grain yield than the other treatments during both the year. Imazethapyr at 25, 40 and 75 g/ha and pendimethalin at 0.75 and 1 kg/ha had negative effect on different symbiotic parameters such as nodule number, dry weight and leghaemoglobin content as compared to two hand weeding.

Email

singhguriqbal@pau.edu

Address

Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, Punjab 141 004
Control of nutsedge and other weeds in sugarcane with ethoxysulfuron
Radhey Shyam* and Rohitashav Singh
Full length articles | DOI: | Volume: 47 Page No:43-45 |
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Abstract:

A field experiment was carried out at Pantnagar, Uttarakhand during 2009-10 and 2010-11 to study the effect of rates of herbicide ethoxysulfuron for the control of Cyperus rotundus and other weeds in sugarcane. Ethoxysulfuron at 60 g/ha effectively reduced the density of Cyperus rotundus as well as Trianthema monogyna, Digera arvensis, Cleome viscosa and Ipomoea spp. The highest cane yield was obtained with hand weeding thrice at 30, 60 and 90 days after planting. Among the herbicides, ethoxysulfuron at 60 g/ha being at par with ethoxysulfuron at 56.25 g/ha recorded significantly higher cane yield than 2,4-D at 1000 g/ha.

Email

talk2radhey@india.com

Address

G.B. Pant University of Agriculture & Technology, Pantnagar, Uttarakhand 263 145
Weed management in spring-planted sugarcane
Viveak Ballyan, Sandeep Kumar, Naresh Kumar and Sanjay Kumar
Full length articles | DOI: | Volume: 47 Page No:46-49 |
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Abstract:

A field experiment was conducted during 2008-09 and 2009-10 at the Agricultural Research Farm of C.C.R. (P.G.) College Muzaffarnagar (U.P.) to study the integration of chemical and cultural weed management practices in spring planted sugarcane. The experiment consisted of ten treatments laid out in randomized block design with three replications. Cyperus rotundus, Cynodon dactylon and Sorghum halepense were observed as major weeds in both the year. All the weed management practices led to significant reduction in density and dry matter of weeds when compared to weedy check. Hoeing done at 30, 60, 90 DAP recorded lowest weed density (23.77 and 22.07/m2) and dry matter (8.71 and 8.34 g/m2) with mean WCE of 57.0% and was found at par with the application of glyphosate 1.0 kg/ha as pre-emergence + atrazine 2.0 kg/ha after 1st irrigation + one hoeing at 90 DAP (density 24.14 and 23.29/m2, dry matter 10.99 and 10.61 g/m2 and WCE 45.5%). The mean reduction in cane yield ranged from 39.0% under weedyconditions to 8.0% with the crop received 03 hoeing at 30, 60 and 90 DAP and it was closely followed by the glyphosate 1.0 kg/ha as pre-emergence + atrazine 2.0 kg/ha after 1st irrigation + one hoeing at 90 DAP and atrazine 2.0 kg/ha as pre-emergence + one hoeing at 60 DAP. Further, the cane yield was recorded highest (88.8 t/ha) when crop raised with 3 hoeing at 30, 60, 90 DAP which was closely followed (87.9 t/ ha) by glyphosate 1.0 kg/ha as pre- emergence + atrazine 2.0 kg/ha after 1st irrigation + one hoeing at 90 DAP.

Email

sanjaygbpuat@gmail.com

Address

Chaudhary Chhotu Ram Post-Graduate College, Muzaffarnagar, Uttar Pradesh 251 001
Integrated weed management in turmeric
Nidhi Sachdeva, Suresh Kumar* and S.S. Rana
Full length articles | DOI: | Volume: 47 Page No:50-54 |
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Abstract:

Ten weed control treatments viz. metribuzin (700 g/ha) or pendimethalin (1000 g/ha) each followed by (fb) hoeing twice; metribuzin (700 g/ha), pendimethalin (1000 g/ha) or atrazine (750 g/ha) each followed by i) fenoxaprop (670 g/ha) + metsulfuron-methyl (4 g/ha) or ii) straw mulch fb hoeing; weed free (hand weeding thrice) and weedy check] were evaluated for weed control in turmeric on a silty clay loam soil at Palampur during 2012 and 2013. Treatment constituting of fenoxaprop + metsulfuron-methyl were phytotoxic. Pendimethalin fb hoeing and pendimethalin /metribuzin /atrazine fb mulch fb hoeing were comparable to weed free in reducing population of Echinochloa colona, Digitaria sanguinalis, Panicum dicotomiflorum, Cyperus iria and Aeschynomene indica. Metribuzin fb mulch fb hoeing significantly reduced the count of Ageratum conyzoides and Galinsoga parviflora upto 60 DAS. Metribuzin/pendimethalin fb hoeing and pendimethalin/ metribuzin/ atrazine fb mulch fb hoeing resulted in significantly higher plant height, leaves per plant, number of shoots per plant, plant dry matter accumulation, rhizome weightperplant and fresh rhizome yield over other treatments. Atrazine/ pendimethalin/metribuzin fb mulch fb hoeing increased fresh rhizome yield by 1.54-1.68 times over weed free. Metribuzin fb mulch fb hoeing resulted in highest gross and net returns due to weed control. Marginal benefit cost ratio (MBCR) was highest under pendimethalin fb mulch fb hoeing (54.67) followed by atrazine fb mulch fb hoeing (50.73), metribuzin fb mulch fb hoeing (46.2) and pendimethalin fb hoeing (24.86). Weeds in weedy check reduced rhizome yield by 78.2% over metribuzin fb mulch fb hoeing.

Email

skg_63@yahoo.com

Address

Department of Agronomy, Forages and Grassland Management, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur, Himachal Pradesh 176 062
Seasonality of emergence of selected annual weeds in coconut garden
T. Girija*, C. Laly John and C.T. Abraham
Full length articles | DOI: | Volume: 47 Page No:55-58 |
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Abstract:

A long-term trial was conducted in the coconut plantation at Thrissur, Kerala, India from July 2008 to June 2013. Time series analysis was performed with monthly weed count data to determine seasonality of selected weeds of a coconut garden. A multiplicative model was assumed for the time series and the seasonal index was worked out for each weed species. The results revealed that Axonopus compressus, Biophytum sensitivum and Mimosa pudica dominated during the South West monsoon season while Curculigo orchioides and Desmodium gangeticum were seen germinating during the North East monsoon period from September– October and were predominant in the field till February. Hemidesmus indicus and M. pudica were the weed species seen throughout the year. However, their predominance was the field was between November to April and July to November, respectively.

Email

t.girijavijai@gmail.com

Address

College of Horticulture, Kerala Agricultural University, Vellanikkara, Kerala 680 656
Molecular characterization and host range studies of indigenous fungus as prospective mycoherbicidal agent of water hyacinth
Writuparna Dutta, Durga Ray and Puja Ray
Full length articles | DOI: | Volume: 47 Page No:59-65 |
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Abstract:

An indigenous fungal culture, isolated from diseased water hyacinth, in Bolpur, Santiniketan, West Bengal, India, was found to be causing severe blight and dieback disease on water hyacinth, under laboratory and field conditions. It was subjected to morphological and molecular characterization by amplification of 18S RNA gene fragment from genomic DNA using 18S gene universal primers. Subsequently with sequencing, GenBank database comparisons and phylogenetic analysis, the fungus was determined as Alternaria japonica Yoshii. Further the pathogen was evaluated for its host specificity to be developed as mycoherbicidal agent against this invasive weed. Host range of A. japonica was screened against 48 plant species in 42 genera representing 22 families in pot experiment. Water hyacinth was the only species strongly susceptible to spore suspension (5 × 105 conidia/ml) of A. japonica. Minor infection was observed on goosefoot which is not only a weed but also ecologically separated from water hyacinth. Thus, the use of this pathogen in the biological control of water hyacinth would be safe for plants of economic and ecological significance in India. The secondary metabolite produced by A. japonica was sprayed on the test plants but phytotoxic symptoms were produced on nine out of 48 plants tested, demonstrating that phytotoxin produced by the fungus is not host specific. Further field tests needs to ascertain its efficacy under more natural conditions.

 

 

Email

puja.ray@gmail.com

Address

Department of Biological Sciences, Presidency University, Kolkata, West Bengal 700 073
Impact of invasive weeds on soil attributes at invaded sites
Kavitha Sagar* and M.D. Rajanna
Full length articles | DOI: | Volume: 47 Page No:66-70 |
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Abstract:

Impact on soil chemistry of Calyptocarpus vialis Less., (Straggler daisy), Chromolaena odorata (L.) King and Robinson (siam weed) and Parthenium hysterophorus L. (congress weed) invaded and uninvaded sites were studied during 2014-2015 in selected sites of GKVK, Bengaluru and Mysore district of Karnataka (India). Two soil cores (5 and 10 cm depth, litter discarded) were collected and subjected for analysis of pH, OC, available P K, Zn, Cu, Fe and Mn content. In C. vialis, siam weed and congress grass infested sites at surface soil (5 cm depth) and subsoil layer (10 cm depth) pH, C, P and K were less when compared to the uninvaded sites. Soil ions Zn, Cu, Fe and Mn in C. vialis and C. odorata invaded sites were more at 5 and 10 cm depth. Whereas in P. hysterophorus invaded soil, Cu, Fe ions were less at 5 and 10 cm depth and Zn was more at 5 cm and less at 10 cm depth. Mn ion was less at 5 and more at 10 cm depth. Phosphorus was less available at surface layer and more at subsoil layer in all the three weeds infested sites. Whereas, in the uninvaded sites, there was sufficient availability of P. The same is the case for K. Since the form and availability of P and K is highly pH dependant, the low pH had affected the solubility of P and K. A high variability in response to invasion was observed. Results reflected that soil chemistry was disturbed by the presence of C. vialis, C. odorata and P. hysterophorus to some extent with regard to soil pH, C, P and K contents at 5 and 10 cm depth and micronutrients Zn, Cu, Fe and Mn were increased only in the presence of C. vialis and C. odorata.

 

 

Email

kavcsa@gmail.com

Address

Botanical Garden, Gandhi Krishi Vigyan Kendra,University of Agricultural Sciences, Bengaluru, Karnataka 560 065
Effect of long-term application of herbicides on soil microbial demography in rice-wheat cropping sequence
Rajinder Kumar*, Dinesh Badiyala, Neelam Sharma and Suresh Gautam
Full length articles | DOI: | Volume: 47 Page No:71-74 |
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Abstract:

Increasing reliance of present day intensive agriculture on herbicide use has led to certain concerns about their eco-toxicological effects influencing various microbial populations and associated enzymatic activities, which may serve as indicators of soil quality. The effect of herbicides (cyhalofop butyl, isoproturon, butachlor and clodinafop) on soil microbial population of beneficial and other organisms was assessed over a period after 13 years in a Rabi and Kharif season. In the present study, herbicide application resulted in transient suppression of population of beneficial microorganisms including fungi. The microbial population regained its number by the time of harvesting of crops

Email

rajinder.kumar226@gmail.com

Address

Beneficial microorganisms, Fungi, Herbicides, Microbial population
Weed dynamics and yield of groundnut as influenced by varieties and plant population
T. Bhagavatha Priya, D. Subramanyam* and V. Sumathi
Short communications | DOI: | Volume: 47 Page No:75-77 |
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Abstract:

Groundnut (Arachis hypogaea L.) is cultivated in diverse agro-climatic environments characterized by spatial and temporal variation in rainfall, temperature and soils of varying water holding capacity under rainfed as well as irrigated conditions. The productivity of early Kharif groundnut is very low due to lack of suitable variety and optimum plant population coupled with heavy weed infestation as the crop is grown under irrigation. Groundnut crop is highly sensitive to weed competition and yield reduction up to 70% have been observed (Americanos 1994). Varieties differ not only in their production potential, but also differ in competitive ability of weeds on account of variation in rapid development of foliage and formation of close canopy during early growth stage (Bussan et al. 1997). Different crop geometry also imparts competing ability of crop plants to weeds (Singh and Bhan 2002). It was concluded that groundnut ‘Kadin-6’ had the highest weed suppressing ability, whereas the highest pod yield was recorded with variety Dharani’. A plant population of 0.66 m/ha was optimum for weed suppression.

Email

subbuagro@yahoo.com

Address

Department of Agronomy, S.V. Agricultural College, Tirupati, Andhra Pradesh 517 502
Bio-efficacy of herbicides against weeds in blackgram
K.R. Patel, B.D. Patel*, R.B. Patel, V.J. Patel and V.B. Darji
Short communications | DOI: | Volume: 47 Page No:78-81 |
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Abstract:

A field experiment was conducted during 2011 at Anand, Gujarat to study the bio-efficacy of different herbicides against weeds of blackgram grown in Kharif season. Density and dry weight of weeds were significantly reduced by twice hand weeding carried out at 20 and 40 DAS than that of recorded in other treatments except pre-emergence application of pendimethalin 500 g/ha fb IC + HW at 30 DAS, quizalofop-ethyl 38 g /ha as POE fb IC + HW at 30 DAS, imazethapyr 50 g/ha as POE fb IC + HW at 30 DAS, oxyfluorfen 100 g/ha as PE fb IC + HW at 30 DAS) and fenoxaprop-p-ethyl 50 g/ha as POE fb IC + HW at 30 DAS. Twice hand weeding treatment was found superior to other treatments in respect of reducing the density and dry weight of weeds and recording higher seed and haulm yields.

Email

bdpatel62@yahoo.com

Address

B.A. College of Agriculture, Anand Agricultural University, Anand, Gujarat 388 110
Yield performance and nutrient uptake as influenced by integrated weed management in clusterbean
Versha Gupta, S.P. Singh and R.S. Yadav
Short communications | DOI: | Volume: 47 Page No:82-84 |
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Abstract:

A field experiment was conducted to study the effect of integrated weed management practices on growth, yield, quality of clusterbean and nutrient uptake by crop and weeds at Bikaner during Kharif 2013. Higher yield were recorded under weed-free treatment. Weed biomass was reduced significantly by pendimethalin 0.75 kg/ha as pre-emergence as well as imazethapyr and imazethapyr + imazamox as post-emergence. The highest total uptake of N (88.2 kg), P (17.9 kg) and K (70.8 kg/ha) by the crop was recorded under weed-free conditions.

Email

spbhakar2010@gmail.com

Address

College of Agriculture, Swami Keshwanand Rajasthan Agricultural University, Bikaner, Rajasthan 334 006
Integrated weed management for increased yield and quality of isabgol
Dipika Salvi, A.U. Amin, C.H. Raval, K.G. Vyas, Pinky Patel and C.S. Patel
Short communications | DOI: | Volume: 47 Page No:85-88 |
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Abstract:

A field experiment was carried out during rabi 2012-13 to study the effect of integrated weed management in isabgol (Plantago ovata Forsk). Twelve treatments of weed control i.e., oxyfluorfen 50 g/ha post-emergence at 20 DAS, oxyfluorfen 50 g/haat 15 DAS + interculturing followed by hand weeding at 30 DAS,oxyfluorfen 75 g/ha postemergence at 20 DAS, oxyfluorfen 75 g/ha postemergence at 15 DAS + interculturing followed by hand weeding at 30 DAS, isoproturon 500 g/ha as pre-emergence, oxadiargyl 80 g/ha at 20 DAS, oxadiargyl 80 g/ha at 15 DAS + interculturing followed by hand weeding at 30 DAS, oxadiargyl 100 g/ha at 20 DAS, oxadiargyl 100 g/ha at 15 DAS + interculturing followed by hand weeding at 30 DAS, interculturing followed by hand weeding at 20 and 40 DAS, unweeded and weed free were evaluated in randomized block design with three replications. Results revealed that, crop in weed free condition recorded significantly higher growth parameters, yield attributes, swelling factor (14.0 ml/g), seed (1.22 t/ha) and straw (2.93 t/ha) yields, which were statistically at par to the physical method i.e. interculturing followed by two hand weedings at 20 and 40 DAS and integrated weed management practices i.e. oxadiargyl 100 g/ha at 15 DAS + interculturing followed by hand weeding at 30 DAS.

Email

kgvyas09gmail.com

Address

Dantiwada Agricultural University, Sardar Krushinagar, Gujarat 385 506
Phyto-sociological attributes of weed flora in major crops of red and lateritic belt of West Bengal
B. Duary, A. Mukherjee and M.K. Bhowmick
Short communications | DOI: | Volume: 47 Page No:89-92 |
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Abstract:

Phyto-sociological analysis of weed flora in Kharif and Rabi season of 2009-2010 conducted in Purulia, Bankura and Birbhum districts of West Bengal, India revealed that rice field was infested with 35 (8 grasses, 22 broad-leaved and 5 sedges), 24 (9 grasses, 10 broad-leaved and 5 sedges) and 45 (11 grasses, 28 broad-leaved and 6 sedges) weed species in Purulia, Bankura and Birbhum districts, respectively. In rapeseed-mustard 16 (4 grasses, 11 broad-leaved and 1 sedges), 9 (3 grasses, 5 broadleaved and 1 sedges) and 20 (3 grasses, 16 broadleaved and 1 sedge) weed species were observed in\ Purulia, Bankura and Birbhum districts, respectively. The wheat field of Purulia and Birbhum districts was infested with 12 (3 grasses, 8 broad-leaved and 1 sedges) and 20 (3 grasses, 14 broad-leaved and 3 sedges) weeds. A total of 13 (3 grasses, 9 broadleaved and 1 sedge) and 23 (4 grasses, 16 broadleaved and 3 sedges) weed species were observed in potato field of Bankura and Birbhum districts, respectively. Ludwigia parviflora recorded the highest values of frequency, dominance and importance value index in rice field of all the districts Whereas, the dominant weed species in rapeseedmustard, wheat and potato fields was Cynodon dactylon followed by Echinochloa colona and Digitaria sanguinalis among grasses, and Cyperus rotundus among sedges.

Email

bduary@yahoo.co.in

Address

Institute of Agriculture, Visva Bharati, Sriniketan, West Bengal 731 236
Inhibitory potential of “coffee weed” on Parthenium
Jai Knox, Joy Dawson, Ajita Kumar, S.A. Bhalerao and M.S. Paul
Short communications | DOI: | Volume: 47 Page No:93-94 |
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Abstract:

Inhibitory effect of Cassia occidentalis L. (CO) on Parthenium hysterophorus L. (PH) was assessed under various biochemical parameters like chlorophyll, nitrogen and protein percentage. Chlorophyll content, nitrogen and protein percentage of one month old Parthenium plants were observed after treatment with aqueous leachates of the shoots of C. occidentalis and compared with control sets treated with distilled water. The allelochemicals released from Cassia inhibited the chlorophyll, nitrogen and percentage of Parthenium to the tune of 84.9, 96.4 and 96.4%, respectively. The results indicated the possible suppressive effect of allelochemicals present in C. occidentalis L. (CO) on P. hysterophorus.

Email

jaiknox@rediffmail.com

Address

Department of Botany, St. John’s College, Dr. B. R., Ambedkar University, Agra (U.P.), India.
Soil seed bank studies on a riparian habitat invaded by Parthenium
Asad Shabbir
Short communications | DOI: | Volume: 47 Page No:95-97 |
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Abstract:

Parthenium is an invasive weed in many parts of the world. In Pakistan, this has now become dominant weed in wastelands, forests and other natural areas and is also becoming a problematic weed in other situations such as irrigated and rain-fed cropping systems, pasture lands. In this preliminary study we investigated the impact of this weed on the soil seed bank of a riparian habitat. The impact of Parthenium weed upon below ground soil seed bank was assessed in the invaded and non-invaded sites along the canal near district Lahore, Pakistan. In the invaded site, the average number of Parthenium weed seeds in the soil was found to be 4,434/m2. The average numbers of seed/m2 and species diversity were lowest in the invaded site while it was highest in weed-free sites. A number of important native plant species such as, Saccharum spontaneum, Eleusine indica and Solanum nigrum were found to be declining in the invaded sites. The long-term presence of Parthenium weed at these sites poses a serious threat to native plant diversity in these habitats.

Email

assadshabbir@yahoo.com

Address

Department of Botany, University of the Punjab, Quaid-e-Azam Campus, Lahore, Pakistan
Manually-operated weeders for time saving and weed control in irrigated maize
V.S. Mynavathi, N.K. Prabhakaran and C. Chinnusamy
Short communications | DOI: | Volume: 47 Page No:98-100 |
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Abstract:

A field experiment was conducted to evaluate The weed control efficiency and time saving on weeding operation of different manually operated weeders in irrigated maize. Among the manually operated weeders evaluated, wheel hoe registered an yield increase of 154% over control, took less time (71.4 hr/ha), covered maximum area with minimum cost of operation (` 714.3/ ha) and also required less number of mandays to complete the weeding operation (5.46 man days/ha). Among the mechanical weeders, the highest grain yield of 4.8 t/ha was recorded with wheel hoe weeding twice on 25 and 45 DAS and on par with pre-emergence application of atrazine 0.5 kg/ha on 3 DAS followed by one hand weeding on 45 DAS.

Email

mynagri@gmail.com

Address

Institute of Animal Nutrition, Tamil Nadu Veterinary and Animal Sciences University, Kattupakkam, Chennai, Tamil Nadu 603 203
Leaching behaviour of atrazine and metribuzin in different soil types
K. Kalaichelvi
Short communications | DOI: | Volume: 47 Page No:101-102 |
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Abstract:

A laboratory soil column experiment was conducted to study the leaching behavior of atrazine and metribuzin in red sandy soil and clayey soil type of TCRS, Yethapur. In atrazine applied plot, chlorotic patches were observed in all the seedlings raised from 0 - 40 cm depths (0 – 5, 5–10,10-15, 15-20, 20 -30 and 30- 40 cm. Chlorosis was not observed in the seedlings raised in the soil depths of 40 - 50 cm and 50 -60 cm.This showed that atrazine traces are found in a depth of 0-40 cm. Application of metribuzin showed chlorosis in all the depths and also showed tip burning in blackgram. From this study, it can be recommended that metribuzin should not be applied in red sandy soil and clayey loam soil (loose soil texture) as this would result in poor weed control efficiency since they are subjected to leaching in deeper layers.

Email

kalaiagronomy@gmail.com

Address

Tapioca and Castor Research Station, Tamil Nadu Agricultural University, Yethapur, Tamil Nadu 636 119
Density, survival and seed production potential of important weeds of lateritic belt of West Bengal
D.C. Mondal and A. Hossain
Short communications | DOI: | Volume: 47 Page No:103-105 |
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Abstract:

The study was carried out to document the density, survival and seed production potential as seed rain, through a single value, of important weeds under different cropping systems at the districts Bankura, Birbhum and Burdwan representing lateritic belt of West Bengal during 2011-12 and 2012-13. Twenty four weed species under 22 genera and 14 families were studied in 9 crops. Highest density was recorded in Mollugo stricta in rice under rice – rice system, in Oldenlandia corymbosa in rice under rice – wheat/mustard/ vegetables system, whereas Digitaria sanguinalis recorded highest density in winter and pre-Kharif crops. Highest survival per cent was recorded in Commelina nudiflora and seed rain in Spergula arvensis.

Email

dcmondaldwsr@gmail.com

Address

Visva Bharati, Sriniketan, Birbhum, West Bengal 731 236

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