EFFECT OF POST-EMERGENCE HERBICIDES DICAMBA AND 2,4-D EE ON WEEDS AND YIELD OF LOWLAND TRANSPLANTED RICE

Abstract

Field. experiments were conducted on the clay loam soils of Tamil Nadu Agricultural University, Coimbatore during kharif (June-Sep) and rabi (Oct-Jan) seasons of 1984-85. The herbicide treatments were dicamba at 0.075, 0.125, 0.200, 0.300, and 0.500 kg ha¹ and 2, 4-DEE at 0.200, 0.300, 0.600 and 0.800 kg ha¹ during kharif and 0.200, 0.300, and 0.500 kg ha¹ of dicamba and 0.300, 0.600 and 0.800 kg ha of 2,4-D EE during rabi applied individually and in all combinations. Butachlor 1.5 kg ha¹ and hand weeding twice treatments were included in rabi for comparison. Dicamba +2,4-D EE mixture at 0.300+ 0.600 gave the highest grain yield of 5261 and 4892 kg ha during kharif and rabi seasons, respectively. The grain yields with hand weeding twice (4798 kg ha¹) and butachlor treatments (4816 kg ha-1) were comparable with higher doses of individual application of these herbicides during rabi season. The highest weed control efficiency and index were observed in dicamba + 2,4-D EE mixture at 0.5+0.8 kg ha-1 applied in both seasons closely followed by 0.3+0.60 kg ha-1

DOI

https://doi.org/10.29321/MAJ.10.A01214

Pages

383 - 387

Creative Commons

Copyright

© The Author(s), 2025. Published by Madras Agricultural Students' Union in Madras Agricultural Journal (MAJ). This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited by the user.

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