Soil testing
Handbook in Kannada from Soil Vasu - for trainers and farmers to be able to test their own soil
A methods manual on soil testing from the Department of Agriculture & Cooperation Ministry of Agriculture Government of India - describes the various types of soil in India and the methods to test the suitability of a farmer's soil and water for agriculture.
GoI's farmer's portal houses a dataset of soil testing results for all states.
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