Annual grass Echinochloa crusgalli (L.) Beauv was the major weed and com- peted with the rice. Weeds reduced the grain yield of rice 89% in both kharif and winter seasons. Herbicide mixtures of bntachlor, fluchloralin. oxadiazon and thiobencarb with 2,4-D EE was effective than individual application of the above herbicides. Pre-emergence application of thiobencarb + 2.4-D EE (1.0+0.5 kg/ha) gave higher rice grain yield of 5483 and 4828 kg/ha in kharif and winter seasons respectively.
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Madras
Agricultural Students Union
Tamil Nadu Agricultural University
Coimbatore - 641 003
Tamil Nadu, India.
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