Corgal k 40 is a very rich potassium fertilizer, for foliar and root application. It is an easily assimilable fertilizer and is used as a source of potassium at the times of maximum consumption of this nutrient and when it is appropriate to induce the turn or color change of some fruits, favor the synthesis of sugars and oils, and their accumulation in the organs of reserve (bulbs, fruits, roots and tubers), improves drought resistance or, applied in dessert collection, achieve a better lignification of the shoots (hardening).