Deficiencies of sulphur (S), copper (Cu) and zinc (Zn) are becoming prevalent under intensifying agricultural systems in north-eastern Nigeria. They are manifest in the partial or lack of response by crops to NPK fertilizers leading to a reduction in crop quality and yields. Data were collected o...
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Kwari, J.D.
,
Kamara, A.Y.
,
Ekeleme, F.
,
Omoigui, L.O.
,
[Relation of yields of soybean and maize to sulphur, zinc and copper status of soils under intensifying cropping systems in the tropical savannas of northeast Nigeria]
,
Relation of yields of soybean and maize to sulphur, zinc and copper status of soils under intensifying cropping systems in the tropical savannas of northeast Nigeria
