Boron-free hard fruit

Promote pollen formation: boron promotes pollen formation and pollen tube germination in plants, reduces wheat flower buds, cotton bud buds and pollen malformations, avoids flowers and buds falling off easily, abnormal fertilization, and fruit seeds are not full, etc. . Boron promotes cell elongation and cell division. It is the most important element for the growth and development of plant reproductive organs. It can directly promote the formation of reproductive organs, promote the elongation of pollen tubes, and directly affect the pollination and fertilization of flowers. Promote cell elongation and tissue differentiation: boron can promote crop cell elongation and cell division in plants, which is beneficial to the growth and elongation of crop roots, avoids necrosis of growth points, deformed leaves, thickened, peeled wood, and beet heart Rot and other phenomena. Promote carbohydrate transport and protein metabolism: Boron participates in the transport and metabolism of carbohydrates in plants, increases the sugar content of crop fruits, improves the fruit set rate, and prevents the occurrence of fruit development disorders, deformities, and fruit drop. The severe boron deficiency of the crop affects the normal growth of the leaves, flowers, fruits and stems of the crops, and the formation of its reproductive organs will be affected, and flowers will appear incomplete. It has been verified in many markets that crops are deficient in boron and the fruit setting rate is seriously low. If instant boron is sprayed before flowering, fruit set will be significantly improved.

The main boron fertilizers are: borax, boric acid, sodium octabohydrate tetrahydrate, fluid boron (sugar alcohol complex boron), boron and magnesium fertilizers, etc .;

Borax has poor solubility. It needs to be dissolved in hot water at 40 ° C. The borax solution is alkaline, which is inconvenient for mixing with other pesticides and fertilizers. Boric acid is not very good in dissolving. Fluid boron has good water solubility, and the boron supplement effect is also good, but The cost is higher.

Calcium deficiency and black spots

Calcium is an essential nutrient element for plant growth. It has a variety of physiological functions. As the second messenger in the cell, it participates in a variety of physiological processes of crop growth and metabolism. It plays an important role in maintaining the normal life activities of the cell and affects the crop in many ways. Growth and development and fruit quality formation. Calcium is not easy to transfer in the plant body. In the absence of calcium, the young leaves first show symptoms of dehydration and yellowing, and then dry and brown. Fruit disease spots appear on the fruit surface, and initially appear water-like dark green, and gradually develop into dark green or The gray-white depression, the spots become brown and do not rot when mature, this is the umbilical rot fruit that farmers often say. Calcium has a variety of physiological functions in crops, which can stabilize cell membranes, cell walls, and promote cell and root growth.

Symptoms of calcium deficiency in plants: meristems such as apical buds, lateral buds, and root tips are easy to rot and die, the leaf tips are hook-shaped and stick to each other, dry heart, tendon rot, umbilical rot, etc.

Calcium deficiency can hinder growth, fruits are prone to cracking, thin peels, and intolerance to storage, apples are prone to black spot disease, bitter pit disease, tomato, pepper, watermelon, etc., and rot or umbilical rot, pears, and black heart disease. Calcium deficiency causes the cell wall of the apple to disintegrate, the cell wall and the mesial layer become soft, and subsequently the cells rupture and cause bitter pit disease and rot; . Therefore, in the middle and late period of fruit expansion, or before bagging, the sugar alcohol calcium fertilizer is sprayed carefully for foliar spray supplementation. Generally, the fruits sprayed with supplementary calcium fertilizer on the foliar surface have few cracked fruits, soft fruits and diseased fruits.

The main calcium fertilizers are: calcium ammonium nitrate, calcium nitrate, calcium chloride, EDTA chelated calcium, sugar alcohol complexed calcium and so on.

Tips: The demａnd for nitrogen is the largest before and during the flowering period, and the demａnd for phosphorus is the largest from the inflorescence to the flowering period. And the demａnd for potassium continued throughout the growing season, especially from the inflorescence separation period to the berry maturity period at a high level. The plant's demａnd for boron is particularly critical. Although the demａnd is not large, boron deficiency may cause symptoms such as flower failure, bud not flowering, and even severe yield reduction. The flower bud period, the early flowering period, and 80% of the flowers after the flowering period are better periods of using boron fertilizer, especially during the flower bud period, the effect of spraying boron fertilizer is better!

Zhengzhou Delong Chemical CO., Ltd. is the production base of plant growth regulators in China, which established in 2009, specializing in offering plant protection products. If you have any question, contact us any time.