Question

NPIL fertilizer means organic fertilizer container nitrogen phosphoric and potassiam​

Answer 1

Explanation:

Hi

Management of soil fertility has been the preoccupation of farmers for thousands of years. Egyptians, Romans, Babylonians, and early Germans are all recorded as using minerals or manure to enhance the productivity of their farms. The modern science of plant nutrition started in the 19th century and the work of German chemist Justus von Liebig, among others. John Bennet Lawes, an English entrepreneur, began to experiment on the effects of various manures on plants growing in pots in 1837, and a year or two later the experiments were extended to crops in the field. One immediate consequence was that in 1842 he patented a manure formed by treating phosphates with sulfuric acid, and thus was the first to create the artificial manure industry. In the succeeding year he enlisted the services of Joseph Henry Gilbert, with whom he carried on for more than half a century on experiments in raising crops at the Institute of Arable Crops Research.

Answer 2

Explanation:

Organic compounds such as granite meal and kelp meal are not only high in potassium, but in specific trace minerals. Granite meal is especially high in silica for example. Similarly, bone meal contains both calcium and phosphorus.