Soil exchangeable cations: A geostatistical study from Russia

摘要

In present study, geostatistical techniques was applied to assess the spatial variability of exchangeable cations such as; calcium (Ex - Ca 2+ ), magnesium (Ex - Mg 2+ ), potassium (Ex - K + ) and sodium (Ex - Na + ) in the tillaged layer in a P erm State Agricultural Academy Farm site in Perm region, West Urals, Russia. A 250x100 m plot (approximately 2.35 ha) was divided into grids with 25x25 m spacing that included 51 sampling points from 0 - 0.2 m in depth. S oil rea ction (pH) was the least variable property while the Ex - K was the most variable. The greatest range of influence (237.6 m) occurred for Ex - Ca and the least range (49.7 m) for Ex - Mg.