Abstract
A long term field study was conducted to investigate wheat growth and yield response to various green manure
legumes (Sesbania, Cluster bean, Rice bean) and different P levels (0, 30, 60, 90 kg P2
0S
ha') There was a
significant but variable effect of incorporation of various green manure legumes on wheat growth and yield
Maximum total biomass was produced by Sesbania incorporation followed by Cluster bean and Rice bean in
descending order. Similar trend was observed in case of grain yield under these treatments. Application of P,
further improved the wheat biomass production as well as grain yield of wheat. Increasing dose of P (30, 60 and
90 kg P20S ha') increased the yield by 10, 26 and 40% over control. Over all, average residual effect of green
manure crops alongwith various doses and time of P application was consistent and significant. Green manuring
alone had 9% residual effect whereas P application caused a residual effect of 14% on the following wheat crop
Keywords: Legume green manures; P application; wheat; growth and yield; rainfed conditions
