The nitrogen is obtained from 1 nitrate of soda mined in Chile

The nitrogen is obtained from 1 nitrate of soda mined in Chile

The nitrogen is obtained from 1 nitrate of soda mined in Chile

The nitrogen is obtained from (1) nitrate of soda mined in Chile, (2) ammonium sulphate, a by-product of the gas works, (3) dried blood and other by-products of the slaughter-houses, and (4) cotton-seed meal. Nitrate of soda is soluble in water and may therefore be washed away before being used by plants. For this reason it should be applied in small quantities and at intervals of a few weeks.