Pedo-Transfer Functions for Predicting Total Soil Nitrogen in Different Land Use Types under Some Tropical Environments

Nitrogen pedo-transfer functions were developed for different land use types, soil depths and agro-ecologies across eight states in Nigeria. The results showed that total nitrogen had a good relationship with the organic carbon; therefore, based on between carbon as other parameters (pH, particle size distribution) little contribution no significant correlation (p>0.05) nitrogen. Correlation forward stepwise regression Kendall’s Coefficient Concordance used to fit validate model datasets than those formulation. R2 of best fitted models varied from 0.77 0.85. We obtained generalized (TN = 0.0736*OC, 0.83) which is independent agroecology types. Significant also arable farms 0.08*OC, 0.85) plantation 0.0698*OC, 0.83). It was discovered variations agro-ecology, use, depth did not significantly affect performance.