This is a preview. Log in through your library . Abstract Soils exclusively amended with poultry manure, farmyard manure, sesbania and gliricidia for three successive rice–rice–cowpea cropping systems ...

The experiment consisted of a typical high-yield cropping system, with a 150 cm wide strip of both wheat and maize in the intercropping system. For green manure treatment, hairy vetch was sown ...

LITTLE exact knowledge of the effectiveness of artificial fertilisers on vegetables is available, and further, it seems doubtful whether good crops can be raised indefinitely with the use of ...

RAIN-FED cotton is the principal money crop of the black soil tracts of India 1, which are often characterized by low yields and where nitrogen alone, among the three fertilizer elements nitrogen, ...