Bioefficacy Evaluation and Residue Analysis of Pretilachlor for Weed Control in Transplanted Rice-Rice Cropping System

Abstract

Field experiments were conducted during rabi season and summer season at experimental farm of the Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore). The treatments included were five doses of new formulation of pretilachlor (0.5,0.75,1.0,1.5, 3.0 kg ha-1), butachlor 1.25 kg ha-1, anilofos 0.4 kg ha-1 and rifit 0.75 kg ha-1 (M/s. Gharda chemical formulation) compared with hand weeding twice and unweeded control. The experiments were laid out in a randomised block design with three replications. The predominant weeds of the experimental fields were Echinochloa crus-galli, Leptchloa chinensis among monocots and Marsilea quadrifoliata among dicots. The results of the experiments revealed that, pre emergence application of pretilachlor 1.0 kg ha-1 and pretilachlor 0.75 kg ha-1 with a hand weeding at 45 DAT offered better weed control and resulted in increased yield and economics of transplanted rice, compared to the recommended weed control methods of butachlor 1.25 kg ha-1, anilofos 0.4 kg ha-1 and rifit 0.75 kg ha-1 and hand weeding twice

DOI

https://doi.org/10.29321/MAJ.10.100365

Pages

138 - 141

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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