Did you know that apples also lack calcium?

Calcium is very important for people, calcium deficiency in children will become "X 'legs,"O" legs, the elderly will get osteoporosis.

But do you know? Apples also lack calcium.

What happens when apples are short of calcium?

It causes physiological diseases such as bitter pox disease, acne spot disease, fruit surface black spot, chapped skin crack, fruit surface roughness, poor surface light and so on.

As shown in the picture, this is caused by calcium deficiency.

The occurrence of these diseases will directly affect the price of apples, but also affect the appetite of consumers. As a result, the price of farmers' apples is low and difficult to sell, affecting the income of fruit farmers.

If you don't want the apple to lack calcium, you have to supplement the apple with calcium.

First of all, soil calcium supplement, soil calcium supplement is the fundamental measure to solve the symptoms of calcium deficiency, the soil method is to apply 100kg hydrated lime per mu, but this improper operation is easy to burn trees, the safest way is to apply calcium fertilizer when applying base fertilizer and topdressing.

The application of inferior calcium nitrate is strictly prohibited.

Soil calcium supplement alone is not enough, but also foliar calcium supplement. Generally speaking, most people pay attention to the calcium supplement before bagging, but ignore the calcium supplement after bagging and before harvest. Spraying calcium fertilizer 2-4 times at an interval of 7-10 days from two weeks after flowering to bagging, and spraying once again 40-50 days before harvest can reduce the occurrence of bitter pox during storage.

Generally, water-soluble calcium fertilizers such as calcium nitrate and amino acid calcium can be sprayed 2-3 times before apple bagging 7-10 days after flowering. Ca (NO3) 2 can be sprayed 1-2 times in August-September when the concentration of calcium nitrate (calcium nitrate) 2 is 0.4% calcium 0.5% calcium chloride concentration is 0.3% calcium 0.5%. Foliar calcium spraying combined with spraying low concentration (generally not more than 100ppm) growth regulators can promote calcium transport to fruit.

The tree trunk should also be supplemented with calcium, and the calcium content of apple leaves and fruits can be effectively increased by supplying calcium directly with a high-pressure trunk syringe.

Conclusion: with the popularization of apple bagging technology, the problem of apple calcium deficiency is becoming more and more prominent. Scientific and effective calcium supplement can make apple peel delicate and glossy, so as to improve income.