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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

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