Causes and Control techniques of Citrus Fruit cracking

China is a big citrus growing country, but whenever the citrus is ripe, it is very easy to crack, and when it is serious, the fruit cracking rate is more than 40%, which seriously affects the economic benefits of fruit growers. So what is the cause of citrus fruit cracking? How to prevent and cure it? Let's take a look at the detailed introduction.

1. Variety reasons

The fruit cracking rate of different citrus varieties varies greatly, and its fruit cracking rate is closely related to the tightness of the pericarp, the thickness of the pericarp and the fruit shape. In general, the varieties with tight pericarp, thick pericarp and oblong fruit shape are not suitable for cracking, on the contrary, the pericarp is looser, the pericarp is thinner, and the fruit shape is flat and oblong, and the more flat the fruit is, the easier it is to crack the fruit. Therefore, when planting, we must choose the variety with low fruit cracking rate to reduce the fruit cracking rate and increase the income.

2. Climate impact

Clean fruit cracking is also a gradual process, at first, the outer layer of the pericarp is cracked, then the cells are gradually deformed and ruptured from the outside to the inside, and finally the pericarp is broken. Generally occurs in the fruit expansion and ripening period, when the climate is a long period of drought and rain, it will cause the fruit in the expansion, the growth rate of the pulp is faster than the peel, the pericarp will directly break. In addition, the growth and development of fruit is affected by water content. In case of high temperature and dry climate, the pericarp cell tissue will stop growing, and once it is irrigated by heavy rain or water, it will cause fruit cracking by swelling and compression of pulp tissue. Therefore, we should pay attention to climate change, watering frequently during drought to keep the soil moist, so as to avoid fruit cracking caused by prolonged drought and rain, and under the climatic conditions of abundant rainy season, drainage measures should be taken to avoid fruit cracking caused by excessive water absorption.

3. Lack of nutrition

During the early development of the fruit, due to the lack of nutrients, the pericarp cells divide and water, which will cause the pericarp to expand and become thinner during the fruit expansion, which is very easy to crack the fruit. If planting is lack of calcium, boron and other nutrients, it will reduce the toughness of the pericarp, so that the fruit can not withstand swelling pressure and cause fruit cracking. In addition, when the fruit is expanding, the application of excessive nitrogen fertilizer will make the fruit absorb too much fertilizer and water in a short time, resulting in rapid pulp expansion and a large number of fruit cracking.

4. Diseases and insect pests

There are more clean diseases and insect pests, and the diseases that will cause fruit cracking are sunburn, canker, bugs, mites and so on, which will aggravate the phenomenon of fruit cracking. Therefore, we must pay attention to the prevention and control of diseases and insect pests, increase the application of organic fertilizer, enhance plant disease resistance, and find timely prevention and control of diseases and insect pests, so as to avoid aggravation of the disease.

The above is the introduction of citrus fruit cracking causes and control techniques, hope to help you, want to know more related knowledge, please pay attention to us.