Relation of yields of soybean and maize to sulphur, zinc, and copper status of soils under intensifying cropping systems in the tropical savannas of north-east Nigeria.
2009
Kwari, J. D. | Kamara, A. Y. | Ekeleme, F. | Omoigui, L. O.
AGROVOC关键词
2010-02-15
AGRIS AP