IPI K Centre - Nitrogen and Potassium Interactions

Both nitrogen and potassium are macronutrients, used in large quantities to achieve high yields and quality. While potassium is benign to the environment, nitrogen fertilizer which is applied but not utilized by plants can have a significantly detrimental effect. Even though the theory of the 'Law of the Minimum' and scientific findings showing the interaction between nitrogen and potassium are well known, imbalanced fertilization and ignorance of the importance of potassium often leads to suboptimal levels of nitrogen use efficiency (NUE).

Dozens of experiments made by IPI, demonstrate the role and scale of effect of potassium on NUE. In these experiments, a typical K application of 30-150 kg K₂O/ha can increase NUE by approximately 10-40%.

Applying potassium and improving nutrient management practices offers an immediate and rewarding strategy to raise NUE and thereby reduce the undesirable flow of nitrogen into the environment.

The following items found on our web describe how the application of potash increases crops' response to nitrogen.

Projects & Demonstrations

Sustainable Management of Soil and Fertilizer Potassium as a Prerequiste to High Efficient Fertilizer Nitrogen Use

Fertilization of Vegetables Cropped Under Saharian Conditions

Effect of Nitrogen and Potassium Interaction on Nitrogen use Efficiency and Nitrate and Potassium Leaching in Sorghum-Wheat System

Potassium for Enhancing Nitrogen Utilization Efficiency of C4 (sorghum) and C3 (wheat) Plants: Biochemical Processes and Proteomics Approaches

Efficiency of Muriate of Potash in Winter Wheat, Winter Rape, Sugar Beet and Grain Maize in Relation with Nitrogen Fertilizers in Western Part of Ukraine

Potassium Nutrition of Banana in Alluvial Soils of Bihar for Yield and Quality Enhancement

Effect of Nitrogen & Potassium Levels on Yield of Potato and Maize Intercropping

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Publications

Papers and presentations

K in the literature