... and should pay attention: first, in acid soil, the excess of acid sulfate soils will increase, and even increased activity ... hydrogen sulfide, so that victims of black roots. Therefore, the long-term use of potassium sulfate with the manure, alkaline phosphate and ... beet, watermelon, potato, etc. Adding not only the increase in production of potassium sulfate, but also to improve quality. Potassium ...