The effect of integrated use of green manure with S sources on the yield of rice

摘要

Field experiments were conducted in Tamil Nadu, India, on a clay loam soil during the monsoon seasons of 1996 and 1997 to study the effect of integrated use of green manure and S sources on yield of rice. The results showed significant increases inplant height, number of tillers/hill, leaf area index, number of panicles/m2, number of filled grains/panicle and grain and straw yield with S levels. The effect was maximum at 40 kg S/ha. Among S sources, iron pyrites recorded higher growth and yield ofrice. Grain and straw yields were maximum when Sesbania aculeata was applied along with iron pyrite at 20 kg S/ha and were comparable with those obtained with the application of 40 kg S/ha as iron pyrite in the absence of green manure.