Potassium assists in better water and nutrient uptake while helping synthesize proteins and starches. Potassium also helps the grass build thicker cell walls, stay healthy and strengthen the plant so it can withstand various stresses such as drought, heat, cold and disease.

Does potassium burn grass?

Potassium sulfate doesn’t burn turf due to its low salt index. “As we get away from the greens we can switch from potassium sulfate to muriate of potash and manage accordingly to reduce burn potential by applying to dry turf and watering immediately after application.

Can you over apply potassium?

Significant overapplication of some potassium-containing fertilizers could cause salt burn, Murphy says. However, that is in extreme cases, and most superintendents know better than to apply too much. … Compared to potassium chloride products, it has lower chloride levels and a lower salt index, he says.