Yield, nutrient uptake and economics of soybean under different weed management practices


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Authors

  • S. P. Singh
  • J.P. Singh
  • Amit Bhatnagar
  • Amit Kumar
  • Ajit Yadav
  • Gaurendra Gupta
  • Usha Kumari
  • Gaurav Verma

Keywords:

Economics, nutrient uptake, soybean and yield.

Abstract

A field experiment was conducted during kharif season of 2014 at GBPUAT, Pantnagar (Uttarakhand)
to find out the effect of integrated weed management options on soybean. The experiment was
laidout in a randomized block design with four replications to evaluate ten treatments viz. Preemergence
application of herbicide, sulfentrazone 48% SC @ 300 g a.i/ha, sulfentrazone 48% SC @
360 g a.i/ha, sulfentrazone 48% SC @ 360 g a.i/ha + hand weeding (HW) at 40 (DAS) days after
sowing, sulfentrazone 48% SC @ 300 g a.i/ha + HW at 40 DAS, pendimethalin 30 EC @ 750 g a.i/ha,
pendimethalin 30 EC @ 1000 g a.i/ha, pendimethalin 30 EC @ 750 g a.i/ha + HW at 40 DAS and
pendimethalin 30 EC @ 1000 g a.i/ha +HW at 40 DAS, weed-free and weedy check. Weed-free plot
recorded higher grain yield (2.99 t/ha) followed by pre-emergence application of sulfentrazone
48% SC @ 360 g a.i/ha + HW at 40 DAS. The highest nutrient (NPK) uptake (255.2, 37.2, 110.6 kg/
ha) by crop was recorded under weed-free plot treatment. The highest net returns (Rs 49,037/ha)
and benefit: cost ratio (1.76) were recorded under pre-emergence application of sulfentrazone 48%
SC @ 360 g a.i/ha + HW at 40 DAS. Thus, it could be concluded that pre-emergence application of
sulfentrazone 48% SC @ 360 g a.i/ha + HW at 40 DAS can be used for effective weed control in
soybean.

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Submitted

2018-04-19

Published

2018-04-19

How to Cite

Singh, S. P., Singh, J., Bhatnagar, A., Kumar, A., Yadav, A., Gupta, G., Kumari, U., & Verma, G. (2018). Yield, nutrient uptake and economics of soybean under different weed management practices. Annals of Agricultural Research, 38(4). Retrieved from https://epubs.icar.org.in/index.php/AAR/article/view/78997

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Articles