Appearance identification of foliar fertilizer quality

Fertilization technology for spraying large amounts of nutrients and trace elements on leaves is an important supplement to soil fertilization technology, which has been rapidly promoted in agricultural production in recent years. Foliar fertilization technology has shown good results in improving the utilization rate of fertilizers of a large number of nutrients, supplementing the trace elements lacking in crops, improving the yield and quality of agricultural products, and reducing the non-point source pollution of agricultural fertilizers. However, there are many varieties of foliar fertilizers on the market, and the quality is not good. Farmers do not know how to distinguish the quality of foliar fertilizers, which seriously affects the large-scale promotion of this technology. Therefore, this article puts forward a "three-see" approach to how to easily identify the quality of foliar fertilizer from the appearance, for farmers' friends to refer to when purchasing.
(1) Look at the packaging and instructions. The regular foliar fertilizer varieties that meet the national quality requirements should be marked. 1. Product name, name and address of the manufacturer; 2. Agricultural registration certificate number, product standard number, active ingredient name and content, net weight, production date; 3. Applicable crops, applicable areas, methods of use and precautions.
(B) look at the dissolution situation can be a bag of foliar fertilizer and about 1kg of water mixed, see the dissolution situation. If the foliar fertilizer is completely dissolved, there is no precipitation, indicating that the product is of good quality, high effective nutrients, and nutrients are easily absorbed by the crop. If the foliar fertilizer is not completely dissolved, there is sediment under water, indicating that the quality of the product is not good, and it is easy to block the spray nozzle when spraying, and the utilization rate of the nutrients of the crop is not high.
(3) Seeing dosage form and dryness There are two types of solid and liquid foliar fertilizers on the market. Generally, solid foliar fertilizer is superior to liquid foliar fertilizer. Solid foliar fertilizer is not divided into granular and powdery, granular foliar fertilizer is better than powder. Because the granular foliar fertilizer is processed by a special process, it has the advantages of convenient application, high degree of drying and easy storage.
From "Agricultural Science and Technology Newsletter"

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