Potassium: While in the three elements, the usage of nitrogen fertilizer ranks the first, accompanied by potassium fertilizer,potassium can advertise the growth of strong crops, stalks thick and tough, greatly enhance the resistance to pests and conditions and lodging;Encourages the manufacture of sugar and starch;Potassium performs a task in afterwards https://beauzulcs.ltfblog.com/31649273/details-fiction-and-npk-12-12-17-2-b-te-for-crop-rotation