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Studies of potassium (K) fixation in the soil were conducted by evaluating the effect of applied K on the extractability of K with time. A series of five K-sorption treatment solutions, 0.11, 0.22, 0.45, 0.90, and 1.80 cmol/kg were prepared and applied as potassium chloride (KC1) to three sets of...


Tening, A.S.Omueti, J.A.I.Tarawali, G.[Fixation of potassium in some soils of the subhumid zone of Nigeria]Fixation of potassium in some soils of the subhumid zone of Nigeria

A greenhouse experiment was conducted to determine the critical deficiency levels of potassium (K) in the subhumid zone soils for predicting response of a mixture of Andropogon gayanus and Stylosanthes hamata cVerano to K application. Twenty coarse textured soils, having loamy sand to sandy loam ...


Tening, A.S.Tarawali, G.Omueti, J.A.I.[Critical potassium deficiency levels for a grass legume pasture grown on soils of the subhumid zone of Nigeria]Critical potassium deficiency levels for a grass legume pasture grown on soils of the subhumid zone of Nigeria

The fast depletion of available potassium (K) in soils of the subhumid zone (SHZ) of Nigeria has become a problem for the formulation of fertilizer recommendations, especially in the grass/legume mixtures of the fodder bank system. Five different K fertilizer recommendation models viz. Control, C...


Tening, A.S.Omueti, J.A.I.Tarawali, G.[Potassium requirements of a grass/legume pasture established on selected soils of the subhumid zone of Nigeria]Potassium requirements of a grass/legume pasture established on selected soils of the subhumid zone of Nigeria

Twenty surface soils (0 to 15 cm), selected to represent a wide range of available potassium (K) status and three different land-use systems (fodder bank, continously fertilized cropped land and fallow land) across the subhumid zone of Nigeria, were used for the investigation. Laboratory and gree...


Tening, A.S.Omueti, J.A.I.Tarawali, G.Mohamed-Saleem, M.A.[Potassium status of some selected soils under different land-use systems in the subhumid zone of Nigeria]Potassium status of some selected soils under different land-use systems in the subhumid zone of Nigeria

During the 1980s the management and nutrient requirements of Stylosanthes in pastures and cropping systems were investigated at several ILCA research sites in northern Nigeria. While Stylosanthes guianensis cv Cook and cv Schofield responded to phosphorus (P), Stylosanthes hamata cv Verano did so...


Tening, A.S.Tarawali, G.Adeoye, K.B.Mohamed-Saleem, M.A.Omueti, J.A.I.[cropping systems in the subhumid zone of Nigera: A review]cropping systems in the subhumid zone of Nigera: A review

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