Potassium: In the 3 elements, using nitrogen fertilizer ranks the initial, followed by potassium fertilizer,potassium can promote the growth of robust crops, stalks thick and tough, greatly enhance the resistance to pests and disorders and lodging;Promotes the creation of sugar and starch;Potassium plays a task in afterwards levels of plant https://best-fertilizer-for-oil-p59124.blogsvila.com/32856418/trace-elements-in-npk-12-12-17-2-b-te-no-further-a-mystery