An investigation on the effect of green manuring in rice-wheat cropping system was undertaken
during May, 2001 to March 2002. Green manuring increased root length, root volume, root dry
weight (i.e. root characters) of rice compared with control. Residual effect of green manuring along
with added nitrogen also significantly influenced all the root characters of wheat compared with
control. Green manuring and its residual effect increased most of the yield components except test
weight, grain yield and straw yield of rice and wheat compared with control. However, among the
different green manuring crops, Sesbania rostrata was, by far, the best one.