To study the effect of 2, 4-D compounds and Butachlor on weed control and grain yield of rice (IR. 20), field experiments were conducted at Agricultural Research Station, Bhavani- sagar during summer and Kharif Seasons of 1980 and in Summer, 1981. The results revealed that pre-emergence application of 2, 4-D Ethyl ester 4%6. at 0 8 kg a, l/ha plus one hand -weeding on 40th day of the crop was found to give effective weed control and significant increase in grain yield.
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