What is soil fertility evaluation, Biology

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Soil fertility evaluation 

In order to maintain soil fertility, nutrients removed from the soil by crops must be restored by the application of manures and fertilizers.  The selection of the right kind of nutrient to be replenished and the proper quantity to be applied is based on the nutrient requirement of the crop and the nutrient supplying capacity of the soil. The assessment of nutrient supplying capacity of a soil is called  soil fertility evaluation.  

 


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