Detailed Explanation of the Causes of Rotting Fruit on Apricot Trees and Control Measures

The apricot is one of the main fruit trees cultivated in the north. Many of us may never have eaten one, but we have certainly eaten almonds. During the cultivation of apricot trees, the problem of rotting fruit often occurs, greatly affecting the yield of the apricot trees. So what are the causes of rotting fruit on apricot trees? How should it be controlled? Let's take a look together.

1. Too high a temperature in the greenhouse

During the young fruit stage of the apricot tree, if the greenhouse temperature exceeds 28 degrees, the evaporation inside the greenhouse will be relatively high, forming water droplets inside it. When these water droplets fall onto the surface of the young fruit, fruit rot may occur.

Control method: Improve the lighting conditions in the greenhouse and control the temperature and humidity. If an old greenhouse is used for cultivation, the dust on the surface of the greenhouse film should be removed in time to increase the light transmittance of the film. On cloudy days or rainy and snowy days, fluorescent lamps should be installed in the greenhouse to supplement light and increase the temperature. On sunny days, pay attention to ventilation to let air in, and keep the greenhouse temperature at around 28 degrees.

2. Pathogen infection

Many fruit growers believe that under greenhouse cultivation, there is no wind, rain or insects to spread pathogens, so the plants will not develop diseases. Therefore, they are rather careless in preventing and controlling pests and diseases, not spraying or spraying too little fungicide, which leads to severe pest and disease outbreaks on apricot trees and causes rotting fruit.

Control measures: Under greenhouse cultivation, because ventilation and air permeability are not as good as in open fields, pest and disease control should be done with greater care, and protective spraying should be carried out in time according to the different growth stages of the apricot tree. During the bud break stage, lime sulfur mixture can be sprayed several times; after flower drop, thiophanate-methyl can be sprayed; during the fruit expansion stage, carbendazim solution can be sprayed; and during the new shoot growth stage, mancozeb can be sprayed, which can effectively prevent and control the occurrence of diseases.

3. Attachments on the fruit surface

Greenhouse cultivation has poor ventilation conditions and relatively high humidity. After the apricot flowers finish blooming, many petals do not fall off but instead directly adhere to the fruit surface. As the fruit grows and expands, the petals absorb water when encountering moisture, and the parts in contact with the petals remain in a moldy, damp state for a long time, causing the fruit to rot.

Control measures: After flower drop, remove the attachments on the surface of the fruit trees and keep the fruit surface clean. This can reduce the situation of rotting fruit on apricot trees.

  The above is an introduction to the causes of rotting fruit on apricot trees and control measures. We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.