Nitrogen use efficiency in corn cropping system under Savannah conditions: effects...
Recovery of nitrogen in leguminous inoculated with rhizosphere organisms (arbuscul...
Use of nitrogen (15N) of green manure and urea and phosphorus (32P) from mineral f...
Long-term cover-cropping systems: 15N-fertilizer recovery and soil organic matter ...
Nitrogen management in cowpea bean, wheat and corn: effects on plant nutrition, gr...
Evaluation of the transfer of the residual nitrogen in intercropping tomato with g...