Potassium (K) is absorbed by plants in larger amounts than any other mineral nutrient except nitrogen, and is required for nutrient movement in the plant. It is essential for the makeup of over 40 different enzymes and is involved in more than 60 different enzyme systems in plants. Potassium is also important in the formation of sugars and starches in plants. Crops that produce a large amount of carbohydrates (sugars) such as cotton, almonds, alfalfa, grapes, cherries and peaches require large amounts of potassium.
Potassium is used by plants to regulate the process of opening and closing the stomatal openings of their leaves. That process influences water use efficiency and carbon dioxide use in the plant. Potassium’s influence on cell turgor pressure and water relations in the plant helps the plants resist the effects of drought and temperature extremes, and aids resistance to many plant diseases.
Depending on soil type, 90 to 98% of total soil potassium is unavailable.… Continue readingRead More »