Effect of Herbicidal Weed Management Strategies on Weed Dynamics and Yield of Lentil

Author: Shruti Priya, Shashank Tyagi, Birendra Kumar, Ramesh Nath Gupta, Pallavi Shekhar, Monika Raj and Sunidhi Kumari

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Abstract

Lentil is an important Rabi pulse crops of India. Weeds are unwanted plants and adversely affected the yield of lentil. Keeping the view of seriousness of weeds a field experiment was conducted to evaluate weed management strategies on weed dynamics and yield of lentil during the Rabi season 2021-22 at Research area, Bihar Agricultural University, Sabour, Bhagalpur, India. The experiment was comprised with ten weed management practices carried out in randomized block design. Lentil variety HUL 57 was sown and herbicides applied at pre and post emergence. Lentil crop was infested with diverse types of weed flora and dominated with Vicia sativa, Vicia hirsuta, Chenopodium album, Anagallis arvensis, Solanum nigrum, Cynodon dactylon, Dactyloctenium aegyptium, Phalaris minor and Cyperus rotundus. Weed density, weed dry weight of grassy, broad leaf weeds as well as total weeds were recorded lowest value in weed management practice with metolachlor (50% EC) @ 1.0 kg a.i. ha-1 pre emergence followed by one hand weeding at 25 days after sowing. Minimum weed index, maximum weed control efficiency, highest number of branches plant-1, number of pod plant-1, number of seeds pod-1, test weight, maximum grain yield (1.62 t ha-1) and haulm yield (2.54 t ha-1) were observed by metolachlor (50% EC) @ 1.0 kg a.i. ha-1 pre emergence followed by one hand weeding at 25 days after sowing. However, all weed management strategies showed more grain and haulm yield as compared to weedy check.

Keywords

Lentil, weed index, herbicide, weed control efficiency, yield

Conclusion

Weed management strategies by metolachlor (50% EC) and one hand weeding after 25 DAS was found better in term of growth yield 38 % higher yield and weed control. Afterward hand weeding at 20 DAS, metolachlor @ 1.0 kg a.i. ha-1 PE followed by @ 0.05 kg a.i. ha-1 PoE and pendimethalin @ 960 g a.i. ha-1 PE followed by the imazethapyr @ 40 g a.i. ha-1 PoE also found to be better in terms of suppression of different weeds in lentil. However, all weed management practices in lentil was found effective in reducing weed population, weed growth and better yield than weedy check in lentil crop.

References

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How to cite this article

Shruti Priya, Shashank Tyagi, Birendra Kumar, Ramesh Nath Gupta, Pallavi Shekhar, Monika Raj and Sunidhi Kumari (2023). Effect of Herbicidal Weed Management Strategies on Weed Dynamics and Yield of Lentil. Biological Forum – An International Journal, 15(5a): 428-433.