In-Season Soil Nutrient Levels and Plant Nutrient Uptake in Soybeans Fertilized with Different Potassium Fertilizers.

Plant nutrient uptake is directly related to the available nutrient levels in the soil. The amount of plant available nutrient in a fertilized field may vary with the release characteristics of applied fertilizer. In the present study, soybeans field was treated with three different K fertilizers Polyhalite (Poly), muriate of potash (MoP) and MoP+Poly in 75:25 ratio along with a control. Soil samples and tissue samples were collected at early, mid and late growth stages of crop and analyzed for available K, and total K uptake, respectively. The presentation will discuss how different K-fertilizers effected the in-season availability of K in soils and uptake of K by soybeans as compared to control.