Causes and control measures of citrus floating peel

Citrus floating peel is a common physiological disease, which mainly refers to the gap separation between peel and pulp during citrus ripening, resulting in pericarp bulging, which mainly occurs in the later stage of ripening. So how to prevent clean floating skin? Let's get to know it.

1. Excessive nitrogen fertilizer

Nitrogen fertilizer is a necessary nutrient for the growth of many plants, it can promote plant growth, but excessive or too late application of nitrogen fertilizer will not only affect the coloring of the fruit, but also promote the secondary expansion of the fruit and lead to the appearance of floating peel.

Prevention and control methods: in order to control the application of nitrogen fertilizer and increase the application of organic fertilizer, early fertilization should be applied in orchards with poor irrigation conditions, weak tree potential and more fruit. the type of fertilizer should be quick-acting organic liquid fertilizer or nitrogen, phosphorus and potassium fertilizer, and nitrogen fertilizer should not be applied partial. For example, urea and so on, we should pay attention to the amount of nitrogen fertilizer during the color conversion period.

2. High temperature, high humidity or lack of water and drought

In autumn, there is a lot of rainfall in the fruit coloring period, and the floating skin phenomenon is easy to appear in the high temperature and high humidity environment. At the same time, in the fruit expansion period, if high temperature and drought, lack of irrigation, it is also easy to lead to the phenomenon of floating skin in the orchard.

Prevention and control methods: to do a good job of water management, for dense planting orchard in the fruit ripening period to avoid a large amount of irrigation, pay attention to clear ditch drainage, as much as possible to reduce the humidity between the garden, but also can not be lacking, in time to water in drought, drip irrigation is recommended.

3. Lack of calcium and boron

During the expansion period, the fruit is lack of calcium or boron, and floating skin phenomenon will also occur. Calcium is an important element of absolute fruit firmness. The more sufficient the calcium content is, the better the fruit firmness is. If the calcium content is insufficient, the connection between the fruit cells is loose and the toughness is not good. It is easy to appear floating skin phenomenon, so it is necessary to supplement calcium in time.

Control methods: in spraying to control diseases and insect pests, a small amount of water-soluble fertilizer can be used many times, foliar fertilizer of many elements can be added, and calcium and boron fertilizer can be sprayed as soon as possible. Some studies have shown that the simple application of inorganic calcium compounds can reduce the floating skin, but also reduce the effect of fruit quality.

4. Improper use of hormones

Improper use of hormones will also cause floating skin phenomenon, with the introduction of planting technology, the use of gibberellin in citrus and the use of cytokinins to promote flower bud differentiation is more common, and there is no problem when these hormones are used at normal concentrations. but the use of too much concentration, too many times, it will cause a large area of floating skin phenomenon.

Prevention and treatment methods: the use of hormones must pay attention to the concentration, must not increase or decrease the concentration, as well as the number of use, too much hormone concentration is easy to cause a large number of floating skin, and the concentration is too small can not play a corresponding role, but also counterproductive.

The above is the introduction of the causes and control measures of citrus floating peel. I hope it can help you. If you want to know more about it, please follow us.