What are the commonly used potassium fertilizers? What are their advantages and disadvantages?
For gardening friends, chemical fertilizers are naturally all too familiar. To improve the yield and quality of crops, you have to apply nitrogen fertilizer, potassium fertilizer, phosphate fertilizer and other fertilizers. These three fertilizers are essential for the growth and fruiting of crops or fruit trees, especially potassium fertilizer, which plays a very key role in fruit quality. So what are the commonly used potassium fertilizers? What are their respective advantages and disadvantages? Let's take a look together next!
What are the commonly used potassium fertilizers? What are their advantages and disadvantages?
Potassium chloride, potassium sulfate, potassium nitrate, potassium dihydrogen phosphate, organic potassium, biological potassium, potassium humate, potassium fulvate, etc. Among them, the first five are the most common and most commonly used, and plant ash is also a relatively common potassium fertilizer in rural areas.
1. Potassium chloride
It has an acidic fertilizer nature and offers the advantages of low price, high potassium content, strong instant solubility and quick effects. It is suitable for use as a base fertilizer and topdressing in places with more rain, while plots that are dry and short of water should have its use controlled or avoided. It is commonly used on field crops that are not sensitive to chlorine. However, because it contains chloride ions, long-term use can easily cause soil salinization and hardening, so saline-alkaline soil had best not use potassium chloride.
2. Potassium sulfate
This potassium fertilizer is often used on chlorine-sensitive, potassium-loving crops, such as onions, garlic, Chinese chives and other vegetables. Its potassium content is about 50%, and its sulfur content is about 18%. Both potassium and sulfur are essential nutrient elements for crops, and it does not contain chlorine, so it is more suitable for various soils and crops and is often used as a base fertilizer, topdressing, etc.
Advantages: relatively low price, high potassium content, and besides potassium it can also provide sulfur.
Disadvantages: it is a physiologically acidic fertilizer, and the sulfur it contains easily combines with calcium to form the slightly soluble substance calcium sulfate, which after application can cause soil acidification and hardening.
3. Potassium nitrate
Potassium nitrate contains 13.5% nitrate nitrogen and 46% potassium. It is a chlorine-free potassium and nitrogen compound fertilizer made by dissolving sodium nitrate and potassium chloride together and recrystallizing them. It is suitable for topdressing and is often used on crops such as vegetables, tobacco, melons and fruits, and has a very good effect on fruit enlargement. This potassium fertilizer is moderately priced, has good instant solubility, and is a physiologically neutral fertilizer, so long-term use generally does not easily lead to soil acidification. Because it contains nitrate, there will be certain safety hazards in processing.
4. Potassium dihydrogen phosphate
Potassium dihydrogen phosphate is a potassium fertilizer that is very good for fruit coloring. It contains 52% phosphorus and about 34% potassium. Potassium dihydrogen phosphate can be used as a base fertilizer, seed fertilizer, topdressing, for seed soaking, etc. Its fertilizer content is relatively high, and its price is also relatively high.
Advantages: high phosphorus and potassium content, can supplement phosphorus and potassium elements at the same time, small dosage, obvious effect.
Disadvantages: the disadvantage is that the price is relatively high, and there are many fake products on the market.
At this point, the introduction to commonly used potassium fertilizers and their advantages and disadvantages ends here. If everyone wants to grow high-yield, good-quality crops or fruit trees, it is recommended to use the correct potassium fertilizer and master scientific application methods. I hope this article is helpful to everyone.
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