Agricultural and Biological Sciences
8 years ago

Soil Study Reveals Key Factors Affecting Phosphate Levels in Northwest India.

Journal of the Indian Society of Soil Science
Phosphate Adsorption Characteristics of Some Benchmark Soils of N-W India and Their Relationships with Soil Properties
Milap Chand, N. S. Randhawa, A.C. Vig

Paper Summary

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Phosphate adsorption in soils of northwest India is influenced by factors like clay content, organic carbon, and Fe and Al levels. Soils with higher clay and extractable Fe tend to have lower P concentrations in solution. The combination of clay and Fe content explains most of the variations in adsorbed and solution P. Soils with more total Fe and Al, organic carbon, and clay have higher buffering capacity. The residual effect of P-fertilizer reduces P sorption in soils.