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| Physical Properties | Chemical Properties | ||
| Color | Light Brown | Total Amino acid Content | 25~30% |
| Odor | Special Aromatic | Nitrogen | 10% |
| Water Solubility | 100% | Zinc | 10% |
| PH Value | 4 ~ 6 | ||
| Moisture | 5% | ||
Zinc is an essential nutrient element for crops. Zinc can promote the synthesis of indole acetic acid in crops, thereby promoting the growth of stem ends, young leaves and roots. Zinc is a component and activator of various enzymes in crops, thus participating in the respiration of crops. The role of zinc and the metabolic process of various substances; Zinc is closely related to the synthesis of crop proteins, and has a significant impact on the formation of crop chlorophyll and photosynthesis, which is beneficial to the stability of crop root cell membrane and cell structure and the integrity of functions. The cell membrane plays a protective role, which can enhance the stress resistance of crops, affect the absorption of phosphorus by crops, and regulate the balanced utilization of phosphorus in crops. If zinc is deficient, it will adversely affect the normal growth of crop roots, stems and leaves
Symptoms of Zinc Deficiency in Crops
Symptoms of zinc deficiency in crops mainly occur in the early stage of growth, and are mainly manifested as shortened internodes, dwarf plants, smaller and deformed leaves, and chlorosis or white stripes, forming leaf clusters. However, the symptoms of zinc deficiency vary from crop to crop.
1. Zinc deficiency in rice
Symptoms generally appear 2 to 4 weeks after transplanting. First, the middle rib of the new leaves turned green and white, and then the middle and lower leaves showed a lot of brown spots and streaks from top to bottom and from the inside to the outside; Withered and dry, the new leaves are short and short, the upper and lower leaf pillows are juxtaposed, the leaf sheaths are overlapped, the tillers are small and few, the plants are short, the internodes are shortened, and the roots are thin and reddish-brown.
2. Zinc deficiency in corn
The symptoms first appeared in the seedling stage. The newly unearthed maize seedlings appeared white. When the seedlings grew 4 to 5 leaves, yellow-white stripes parallel to the veins appeared between the leaf veins; with the development of zinc deficiency symptoms, some leaves appeared. Cracks along the stripes, the leaf margins are scorched, few new roots grow, the roots turn brown, the plants are short, the ear is short and the grains are bald.
3. Zinc deficiency in wheat
Symptoms first appeared in the seedling stage. The leaves of the seedlings appeared abnormally gray-green, with chlorosis between the veins, light gray spots on the surface of the leaves, yellowing of the leaf tips and leaf margins, and the plants were dwarfed.
4. Zinc deficiency in fruit trees
When citrus, grape, peach, pear, apricot, cherry, bayberry, apple and other fruit trees are deficient in zinc, the internodes of the branches are shortened, the branches are rosette-like, and the leaves become smaller and cluster at the ends of the branches. When the symptoms are severe, the new branches gradually die from top to bottom, and sometimes the leaves fall off prematurely to form dead top branches, and the fruits are smaller.
5. Zinc deficiency in some vegetables
When tomato is deficient in zinc, the plant grows weak, the leaves are twisted, and the macular appears on the surface, and then the macular gradually expands, the whole plant turns yellow, the branches and leaves droop, and finally scorch, resulting in smaller fruit. When cucumber is deficient in zinc, the plant grows poorly, and the edges of the old leaves turn yellow and scorch, and gradually expand inward in an irregular manner. Small yellow spots appear on the surface of the leaves. Stripes are lighter green. When eggplant is deficient in zinc, the plant grows short, the top leaves are slender, the sides of the leaves are rolled up, and the lower leaves are largely chlorotic or even completely chlorotic.
