Does Dongkui waxberry need calcium supplementation?
Calcium is one of the five major elements for plants, because calcium is required by plants in relatively large amounts. Dongkui waxberry also has a relatively high demand for calcium, because calcium has multiple physiological effects on Dongkui waxberry. 1. Main functions of calcium: 1. It can prevent cracked pit disease, flesh onion disease, etc. in Dongkui waxberry fruit; 2. It can...
Calcium is one of the five major elements for plants, because calcium is required by plants in relatively large amounts. Dongkui waxberry also has a relatively high demand for calcium, because calcium has multiple physiological effects on Dongkui waxberry.
1. Main functions of calcium
1. It can prevent cracked pit disease, flesh onion disease, etc. in Dongkui waxberry fruit;
2. It can make the flesh columns of the fruit harder and reduce rot;
3. It can combine with oxalic acid in the tree body to form calcium oxalate and calcium phosphate, thereby regulating the acid-base balance in the body;
4. Because calcium is an activator of some enzymes, it can promote the sprouting of branches and shoots;
5. It prevents the leakage of substances from cells or vacuoles;
6. It is beneficial to the transport of carbohydrates, especially when the fruit has sufficient carbohydrates, improving quality.
2. Symptoms of calcium deficiency
1. Branches and shoots are weak and slender; in severe cases, the growing points of new shoots are damaged, or necrose and turn black.
2. Leaves have difficulty becoming green; sometimes young leaves lose green color, become deformed, or leaves stick to one another, with leaf margin necrosis.
3. Fruit cracked pit, fruit cracking, deformed fruit, or insufficient sugar in the fruit, resulting in poor quality.
3. Methods of calcium supplementation
1. Soil application: This method can both regulate soil pH and supplement calcium for Dongkui waxberry. The soil application method is to broadcast slaked lime at 60-100 jin per mu according to the soil pH.
2. Combined with disease prevention: For example, spraying Bordeaux mixture or lime sulfur mixture can play multiple roles such as disease prevention and calcium supplementation. Especially when high-concentration lime sulfur mixture is used in winter, it has multiple effects on disease prevention, pest control, removal of lichens and moss on branches and trunks, and calcium supplementation.
3. Canopy spraying: For example, spraying with 0.3%-0.5% calcium nitrate or 0.3% calcium hydrogen phosphate or 1% superphosphate soaking solution has a relatively significant effect on preventing and controlling flesh onion disease and fruit cracking.