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Soil spatial variability affects the precision of statements about soil properties, behaviour and land use. Termites feed, construct and repair their nests from organic and inorganic components of the soil and through these activities influence soil formation processes and consequently contribute to soil variability as a point centered pedoturbation process. The objective of this study is to evaluate...
Potential N (SN) and P (SP) supplies, N and P utilization efficiencies and fertilizer recovery rates for the northern Guinea Savanna (NGS) agro-ecological zone of Nigeria were derived from data collected on farmers’ fields, and used as input in the QUantitative Evaluation of the Fertility of Tropical Soils (QUEFTS) model. The potential N supply ranged from 7 to 56 kg N ha−1, with a mean of 25 kg N ha...
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