Cotton and black soil (vertisols) are closely interlinked in Indian agriculture. What should be the minimum soil datasets required and their thresholds to consider as best quality soil for cotton crop under rainfed condition?
Availability of nutrients for plants (soil fertility)
High proportion of organic matter
Low water level land
Dear Chandran, Hope this article may be of use to you.
Communications in Soil Science and Plant Analysis, 42:11, 1298-1315.
But we have taken only chemical, and few physical and biologcal parameters.
As we know that the black soils of deccan plateau formed from the basalt (basic igneous rock)in tropical conditions. Under rainfed black soil/ black cotton soils evaporation exceeds than rainfall of a particular location.
1. Reverse weathering is the major process of rainfed area and which finally increases the concentration of calcium carbonate and favours for calcareous vertisols or black calcareous soil formation.
2.Some of the literature studies revealed that cotton yield, production and productivity is low under black calcareous soils ( 200 to 500 kg per ha) less than black soils of rainfed area.
Hence it may be referred that calcium carbonate may be best index of soil quality of rainfed black soils
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