Abstract
Field experiments were conducted at Tamil Nadu Agricultural University, Coimbatore, during 1994–1996 covering two kharif (June-September) and two summer (January–April) seasons in soybean, to evaluate the combined effect of organic manures and inorganic fertiliser with different weed management practices on the growth and yield of soybean. The results revealed that the joint application of bio-digested slurry at a rate of 5.0 t ha –1 + 30:120:40 kg NPK ha –1 distinctly increased the plant height, leaf area index (LAI), dry matter production (DMP) and yield of soybean. Hand weeding twice (20 and 40 days after sowing) considerably increased the plant height, LAI, DMP and yield of soybean, followed by alachlor 1.0 kg ha –1 + hand weeding at 40 DAS in all the seasons.
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