Potassium (K), along with nitrogen (N) and phosphorus (P), is an essential plant macronutrient that is taken up by crops from soils in relatively large amounts. Potassium increases both the yield and quality of agricultural produce, and enhances the ability of plants to resist diseases, insect attacks, cold and drought stresses and other adverse conditions. It helps in the development of a strong and healthy root system and increases the efficiency of the uptake and use of N and other nutrients. In addition, K has an important role in livestock nutrition.

This booklet covers the following topics related to K and quality:

• Crop Quality
• Nutritional Value of Crops
• Food Appearance
• Processing Quality
• Shelf Life
• Suppression of Diseases and Insects
• Human Health
• Functional Foods
• Nitrate Content in Food
• Additional Reading

The publication is available for download on the IPI website. For hardcopies contact IPI.