Volume Issue Year Page No Type PDF Download
50 1 2018 82 - 84 Research note
Weed management through early post-emergence herbicides to improve productivity and nutrient uptake in greengram
S. Poornima, Y. Siva Lakshmi, T. Ram Prakash and A. Srinivas
DOI : http://dx.doi.org/10.5958/0974-8164.2018.00019.9
Email : poornishanmugam97@gmail.com
Address : Department of Agronomy, College of Agriculture, Professor Jayashankar Telangana State Agricultural University, Rajendranagar, Hyderabad 500 030

Keywords

Haloxyfop-p-methyl

Herbicides

Imazethapyr

Nutrient uptake

Weed management

Abstract

A field experiment was conducted at College of Agriculture, PJTSAU, Rajendranagar, Hyderabad (Telangana) during rainy season 2015-16 on sandy loam soil to study the weed growth, yield and nutrient uptake in greengram under different early post-emergence herbicide treatments. Lower density and dry matter of weeds was recorded with hand weeding at 20 and 40 DAS followed by haloxyfop-p-methyl 135 g/ha + imazethapyr 75 g/ha at 12-15 DAS as early post-emergence, which remained at par with quizalofop-ethyl 50 g/ha + imazethapyr 75 g/ha at 12-15 DAS. Hand weeding twice at 20 and 40 DAS showed the highest uptake of N, P and K, which was comparable with haloxyfop-p-methyl 135 g/ha + imazethapyr 75 g/ha at 12-15 DAS and quizalofop-ethyl 50 g/ha + imazethapyr 75 g/ha at 12-15 DAS. Significantly higher seed yield was observed with hand weeding at 20 and 40 DAS (1.09 t/ha) which remained at par with haloxyfop-p-methyl 135 g/ha + imazethapyr 75 g/ha at 12-15 DAS (1.03 t/ha) and quizalofop-ethyl  50 g/ha + imazethapyr 75 g/ha at 12-15 DAS (1.01 t/ha).
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