The most widespread chemical constraints on crop production from Chinese red soils include soil acidity, toxicity of Al, Mn and Fe, and deficiencies of the major nutrients N, P and K, as well as some minor nutrients such as B, Mo and Zn. Other nutrients which can be deficient include Mg, S and Si. Particular attention was paid to the N and P incorporated into the microbial biomass. The results indicate that this is an important pool of available N and P in the red soils and may have use as a biological index of nutrient availability.
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- Chemical Soil Constraints to Crop Production on Chinese Red Soils
M. J. Wilson
- Springer Netherlands