Studies on the environmental conditions controlling nitrification in soil

Abstract
It is well known that the loss of nitrogen from the cultivated field principally occurs in the following two ways: (a) denitrification of nitrate, (b) leaching down of nitrate by percolating water. The problem of nitrification in soil is very important in connection with the efficient use of nitrogenous fertilizers applied to both the paddy- and the upland-field.