Nitrogen contribution by multipurpose trees to rice and cowpea in an alley cropping system in Sierra Leone.
1996
In an alley cropping experiment, a study was carried out on N2 fixation by Gliricidia sepium, nitrogen (N) accumulation by prunings of Gliricidia, Senna siamea (formerly Cassia siamea) and Gmelina arborea, and the N contribution to associated crops of rice and cowpea.
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