Potassium: During the 3 elements, the usage of nitrogen fertilizer ranks the 1st, followed by potassium fertilizer,potassium can promote the growth of sturdy crops, stalks thick and hard, improve the resistance to pests and diseases and lodging;Promotes the manufacture of sugar and starch;Potassium performs a job in later on levels https://npk12-12-17-2bteforcitrus69136.fare-blog.com/32790020/a-review-of-npk-fertilizer-for-root-development