90-95% of potash is used in agriculture as fertilizer, for crops like rice, corn, sugar cane, coffee, palm oil, soybeans, bananas, potatoes, and many other fruits and vegetables. It can either be applied directly in the granular form in which it is shipped or blended with nitrogen and phosphate.
Commercial fertilizers, including those that you might buy to help your flowers or vegetables grow at home, typically contain three nutrients that help plants to grow in different, yet important, ways:
- Potassium (from potash) is a nutrient that improves the plant’s overall health
- Nitrogen helps a plant’s leaves grow
- Phosphorus supports a plant’s root growth and flower and fruit development