As an NPK Compound Fertilizer Manufacturer, share with you. What is the difference between macronutrients and micronutrients?
Without the necessary plant nutrients, plants cannot grow. In addition to carbon dioxide (CO2) and water (H2O), plants do need these nutrients to grow and produce biomass. 14 kinds of essential phytonutrients are known, and macronutrients and micronutrients can be distinguished according to the amount of nutrients required by plants. The absorption of macronutrients is relatively large (10-100 kg or more per hectare), while the amount of micronutrients absorbed by plants is mostly limited to a few grams per hectare.
What are N, P, and K, and why are they so important to plants and crops?
The nutrients that crops require the most are nitrogen, phosphorus and potassium. Therefore, they are generally considered to be the most important nutrients.
What is the role of these nutrients in plant growth?
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The main function of N and P is that they are components of proteins and nucleic acids, and important components of plant tissues. K is the only nutrient that is not a component of organic plant compounds, but it is mainly important in regulating plant processes such as osmosis and enzyme activity. K usually plays an important role in the quality of harvested plant products.
Why is it important for farmers to understand the NPK content in their soil?
For the best growth of crops, there should be sufficient nutrients in the root zone of the crop. These nutrients can be partly provided by the soil and partly should be added together with organic fertilizers and fertilizers. The soil will contain different amounts of available nutrients, depending on the parent material (such as sand, clay, peat) and differences in management history, such as past crops, management of crop residues, and manure and fertilizer used in the past. In addition, differences in climatic conditions may change the available nutrients. For this reason, it is important for farmers to understand the NPK content in their soil so that they know how much N, P, and/or K should be added to organic or mineral fertilizers to optimize crop growth, production, and yield.
How do crops absorb these nutrients? Are there differences between each crop?
Nutrients exist in the soil in different forms, and their availability to plants is different. For example, most nitrogen exists in the soil as part of the organic matter in the organic form, while it can only be absorbed in the mineral form (ammonium and nitrate). Organic nitrogen should be mineralized into mineral form before being absorbed by the plant roots. Phosphorus in soil is also present in organic matter, but usually mainly exists in chemical form, and its solubility and plant availability are different. Potassium mainly exists in the soil solution and is adsorbed on soil particles, such as clay and organic matter. It can be relatively easily desorbed from the soil through the balance change between the surface of the soil particles and the soil solution.
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