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.
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English
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31 ref.
2010-02-15
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