ONCE , FARMERS USED TO APPLY SILT FROM TANK BEDS TO THEIR FIELDS, ESPECIALLY IN DRY LANDS WHICH ARE DEFICIENT IN MANY ESSENTIAL PLANT NUTRIENTS. TANK SILT IS A RICH SOURCE OF MANY MICRO AND MACRO NUTRIENTS .SO THE CROPS NEVER FACED ANY NUTRIENT DEFICIENCIES.BUT NOW FARMERS DISCONTINUED THE PRACTICE AND NUTRIENT DEFICIENCIES LIKE ZINC AND IRON HAVE BECOME COMMON IN MANY AREAS.
