Precautions for Caustic Sulfate Application

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/2016-11-23
/By Huifeng Runda

Precautions for Caustic Sulfate Application

Potassium sulphate is a good water-soluble potash fertilizer. Potassium sulfate is also a chemical neutral, physiological acidic fertilizer. Reactions in different soils and matters needing attention:
First, in acidic soil, the excess sulfate will make the soil acidity, and even aggravate the soil active aluminum, iron poisoning of crops. In flooded conditions, too much sulfate will be reduced to generate hydrogen sulfide, so that damage to the root black. Therefore, the long-term use of potassium sulfate and farm manure, alkaline phosphate and lime with, reduce acidity, in practice, should also be combined with drainage measures to improve ventilation.
Second, in calcareous soils, sulfate and calcium ions in soil to form insoluble calcium sulfate (gypsum). Too much calcium sulfate will cause soil compaction, this time should pay attention to increased manure application.
Third, the focus on the avoidance of chlorine crops, such as tobacco, tea, grapes, sugar cane, sugar beet, watermelon, potato and other potassium sulfate not only increased yield, but also improve quality. Potassium sulfate price than potassium chloride expensive, less supply, should focus on the use of chlorine-sensitive and hi-K potassium hi-cash crops, the benefits will be better.
Fourth, potassium sulphate should be mixed with calcium-rich fertilizer application.

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