Abstract

Spatial Variability of Soil Organic Carbon in a Cassava Farm Nigeria
Track: Statistical Analysis
Authors: Tunrayo Alabi

Spatial variability map of Soil Organic Carbon (SOC) is crucial for nutrient management. Georeferenced samples were collected at 30 and 60cm depth on 467Ha. Kriging produced spatial distribution of SOC using Geostatistical Analyst. Best fit semivariogram models were Rational Quadratic(topsoil) and K-Bessel(subsoil). The nugget-to-sill ratio was 0.60 (topsoil) and 0.92(subsoil), indicating medium & weak spatial dependence for both depths. Two fertility management zones for SOC were delineated