Potassium humate is an organic fertilizer commonly used in agriculture. Some of the products are water soluble and used for drip irrigation and foliar spraying. Next, I will give a brief introduction on the water solubility of the potassium humate.
Potassium humate products come in many forms, including powder, flakes, crystals, liquids, granules (balls), etc. Among them, powder and flake products can be nearly 100% water soluble. Because these two products are processed by a centrifuge to remove dust, their purity is higher than that of crystals.
For potassium humate crystals, it is not 100% soluble. Because the crystal is made by sunlight, there must be some impurities in it. Therefore, there will be some very tiny insoluble things in the crystal solution, and its water solubility is generally marked as 95%, not 100%.
In Egypt, Saudi Arabia, Jordan and other Middle East regions, due to the lack of water resources, the most common irrigation method is drip irrigation, which can save water consumption. Therefore, the requirements for the water solubility of the product are relatively high, otherwise the insoluble matter will block the pipeline and cause greater problems. Therefore, highly water-soluble powders and flakes are more popular.
In Vietnam, Indonesia and other Asian regions, in addition to powder and flakes, some farmers like crystals and round granules (balls). Because it is not used for drip irrigation, the requirements for water solubility are not very high. Potassium humate balls can also be used directly as base fertilizer.
The raw materials of these potassium humate products are the same, and their application is also similar. The only difference is the difference in product purity and water solubility caused by different manufacturing processes. However, potassium humate with high water solubility are generally more popular. You can choose suitable products according to the actual situation.