Seventh British Insecticide and Fungicide Conference,Brighton, November 1973 |
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| Authors: | S S Kolhe B N Mittra S S Bhadauria |
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| Institution: | 1. Agricultural Engineering Department , Indian Institute of Technology , Kharagpur, 721302, India;2. Agricultural Engineering Department , Indian Institute of Technology , Kharagpur, 721302, India;3. Senior Project Executive, National Dairy Development Board , Anand, Gujrath, India |
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| Abstract: | Abstract A field experiment was conducted during the wet seasons of 1980 and 1981 to find out the relative influence of weed control and applied nitrogen on performance of transplanted rice and nutrients uptake by rice and weeds. Propanil and thiobencarb, each at 2.0 kg a.i/ha, were found comparable to two hand weedings in increasing grain yield of rice and minimizing dry matter of weeds. The mean grain yield was increased by 28.06% while dry matter of weeds reduced by 84.04% over unweeded control. Application of nitrogen from 0 to 75 kg N/ha increased grain yield to the tune of 1631 kg/ha. Remarkable increase in grain yield was noticed when weed control treatments were associated with application of nitrogen. Higher uptake of N, P and K by crop and lower removal of same nutrients by weeds were observed in herbicides and hand weedings than unweeded control. N, P and K in the order of 11.49, 1.71 and 12.40 kg/ha respectively could be saved through weed control in transplanted rice. |
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| Keywords: | herbicide nitrogen rice nutrients weeds |
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