What are the agricultural benefits of potassium dihydrogen phosphate?
Nov 26,2025
Potassium dihydrogen phosphate can improve soil quality, promoting well-developed root systems in flowers, thick and lush green leaves, robust stems, and enhanced disease resistance and stress tolerance. When applied via foliar spray, potassium dihydrogen phosphate boasts an absorption and utilization rate as high as 80% to 90%, effectively regulating flower growth and providing essential nutrients at critical growth stages. Potassium dihydrogen phosphate is chlorine-free, has a low salt index, is highly soluble in water, and is rich in phosphorus and potassium nutrients. It can buffer fluctuations in soil acidity and alkalinity, stabilizing the soil’s pH level. Moreover, it promotes the growth and reproduction of beneficial microbial communities in the rhizosphere of flowers. When applied to certain ornamental plants, it significantly extends their freshness duration and improves their transport quality, making it particularly suitable for cut-flower production. Potassium dihydrogen phosphate requires only small amounts yet delivers remarkable results. The potassium ions and phosphate radicals contained in potassium dihydrogen phosphate can be directly absorbed and utilized by flower plants, yielding rapid effects.
Potassium dihydrogen phosphate has an extremely low salt content, making it an ideal foliar fertilizer. Moreover, due to its low application rate, it can be widely used for seed soaking, root dipping, seed dressing with chemicals, irrigation, and foliar spraying. It demonstrates remarkable effects in accelerating grain filling in crops, promoting metabolic processes, resisting dry and hot winds, and preventing lodging. As a base fertilizer for crops as well as a foliar spray applied during the mid-to-late stages of crop growth, it is extensively used on various food grains, economic crops, fruits, vegetables, and other plants (such as rice, wheat, corn, sugarcane, soybeans, cotton, flax, fruits, vegetables, and **various other crops**). It is particularly suitable for chlorine-sensitive crops like **, citrus, tea, and watermelon. It is an excellent fertilizer variety designated by the Ministry of Agriculture for promotion and development.
Regarding the application site, young leaves absorb potassium dihydrogen phosphate more effectively than older leaves, and the undersides of leaves absorb it more efficiently than the upper surfaces. Additionally, tender shoots can also absorb the nutrient. Currently, foliar fertilization with potassium dihydrogen phosphate is widely used; typically, the concentration ranges from 0.05% to 0.1% during the seedling stage, and can increase to 0.2% to 0.3% in the mid-to-late stages, applied via foliar spray. During the growing period, frequent foliar sprays with a 0.2% to 0.3% potassium dihydrogen phosphate solution can promote robust stems, lush foliage, abundant flowers, and vibrant flower colors. During the bud-setting stage, spraying with a 0.3% potassium dihydrogen phosphate solution 2 to 3 times can result in larger, more numerous flowers with brilliant hues.
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