In the fertilizer industry, there is a classification of fertilizers, including macroelement fertilizers, medium element fertilizers and trace element fertilizers. Most people are still very vague about this concept, especially some old growers, who prefer to talk about nitrogen fertilizer, potassium fertilizer, phosphate fertilizer, etc. Such a functional name is not very scientific for the classification of fertilizers. The main nutrients of fertilizers are the chemical elements we are talking about. The actual classification of these nutritional chemical elements is macroelement fertilizer, medium element fertilizer and trace element fertilizer.
1. What are macroelements?
Regarding macroelement, what exactly is it? It is normal to have questions, it is a kind of written language. In the basic definition of macronutrients, it is also called a “macronutrient.” It is still indispensable for crop growth, and it is also the element in greatest demand. It is also called some large amounts of elements, such as: carbon, hydrogen, nitrogen, oxygen, phosphorus, potassium, etc. Among them, oxygen, hydrogen, carbon, etc. mainly come from the air, while gases mainly come from the soil.
During the growth of crops, the cellulose, pectin, lignin, etc. formed are also composed of carbohydrates formed by the combination of carbon, oxygen, and hydrogen. This forms the cell walls of the stems and leaves of crops, which is a process of crop growth. Among them, the existing macro-element fertilizers are nitrogen, phosphorus and potassium. It should be clear from this that macroelements generally refer to nitrogen, phosphorus and potassium.
①Nitrogen fertilizers
Urea, ammonium nitrate, ammonium sulfate, ammonium chloride and ammonium bicarbonate are the most commonly used nitrogen fertilizers, among which urea should be the most popular.
②Phosphate fertilizers
Superphosphate, double superphosphate, monoammonium phosphate, diammonium phosphate, etc., these are the most commonly used, and they are also more effective than phosphorus. Each has its own characteristics during use, and you can choose specifically according to the specific situation.
③Potassium fertilizers
Potassium nitrate, potassium dihydrogen phosphate, potassium sulfate, potassium chloride, etc. Among them, potassium dihydrogen phosphate should be relatively familiar. I personally write the most articles about potassium dihydrogen phosphate. Potassium sulfate is more expensive than potassium chloride, but potassium chloride is physiologically acidic and not suitable for acidic soil. Each fertilizer has its own characteristics, and you can choose it based on the soil conditions.
2. What is the definition of medium elements? Regarding the intermediate elements, they are also called “minor constant elements”. That is, the function or role is second only to the macroelements, but the medium elements are also indispensable or irreplaceable for crops. Representatives among this medium amount of elements: calcium, magnesium and sulfur. To say that these are minor macroelements is also in comparison with the amount of macroelement fertilizers used. To put it simply, the dosage of these fertilizers is relatively small, and few people paid attention to the use of medium-element fertilizers in the past.
①Representative of calcium fertilizer
Lime and gypsum, the most common calcium fertilizers. There are also superphosphate, double superphosphate, calcium nitrate, calcium ammonium nitrate, lime nitrogen, potassium calcium fertilizer, calcium magnesium phosphate fertilizer, etc. These are the more commonly used medium element calcium fertilizers.
②Representative of magnesium fertilizer
Magnesium sulfate, magnesium chloride, lime powder, potassium calcium fertilizer, boiled magnesium, magnesium sulfate heptahydrate, magnesium nitrate hexahydrate, etc. are the more commonly used magnesium fertilizers.
③Representative of sulfur fertilizer
Gypsum, ammonium sulfate, potassium sulfate, superphosphate, sulfur, etc., are also commonly used sulfur fertilizers.
3. What are trace elements?
Regarding the definition of this trace element, it is mainly used in smaller amounts compared to macroelements and medium elements. Not only is the dosage small, but the crops absorb very little, but it is an indispensable element. Commonly used trace elements today include: boron, iron, manganese, copper, zinc, etc.
①Representative of boron fertilizer
Borax, boric acid, sodium tetraborate anhydrous, sodium tetraborate octahydrate, and sodium tetraborate decahydrate. These are the more common boron fertilizers currently, and many people should have used borax.
②Zinc fertilizer representative
Zinc sulfate, zinc nitrate, zinc chloride, chelated zinc, etc.
③Representative of iron fertilizer
Ferrous sulfate, lignin ferric sulfate, iron humate, boiled iron fertilizer, etc. Iron deficiency will cause the leaves to lose their green color. In many cases, spraying boiled iron fertilizer can relieve the problem very quickly.
Post time: Jun-03-2024
