What are the causes and diseases of strawberry fruit rot? With control methods

The causes of fruit rot include diseases, poor soil conditions, and improper cultivation management, all of which can lead to fruit rot. The solutions are as follows. Diseases: if diseases are found, Trichoderma can be used for control, and old leaves, diseased flowers and diseased fruits should be removed in time. Poor soil conditions: it is best to plant in soil with good drainage and irrigation, good fertilizer retention, good permeability and loose texture, disinfect before planting, and also carry out reasonable crop rotation. Improper cultivation management: adopt high-ridge cultivation, maintain ventilation at all times, and fertilize reasonably, etc.

I. Causes of fruit rot

1. Poor soil conditions

When planting strawberries, poor soil conditions can also lead to fruit rot. If the permeability is poor, nutrients are insufficient, the soil texture is sticky and heavy, and the fertilizer supply capacity is insufficient, plus the harmful substances and pathogens brought by continuous cropping, it is even more likely to cause the fruit to become diseased and rot.

2. Improper cultivation management

Some fruit growers do not fertilize reasonably when planting and apply too much nitrogen fertilizer. Reasonable application of nitrogen fertilizer can promote rapid plant growth, but excessive application can easily lead to excessive vegetative growth, reduced resistance, and susceptibility to diseases. If immature farmyard manure is applied, it can also cause fruit rot.

3. Diseases

The diseases that cause strawberry fruit rot include Phytophthora fruit rot, sclerotinia rot, anthracnose, powdery mildew and gray mold, etc. Generally, strawberries are planted in greenhouses, but the temperature and humidity in greenhouses are very high, and the ventilation conditions are poor. In this environment, pathogens are prone to multiply. If strawberries are close to the ground, they are most easily infected, and various diseases can also cause cross-infection. In a humid environment, once infected with diseases, fruit rot is likely to occur.

II. Control methods

1. Select good varieties

When planting, we can choose varieties with strong disease resistance and robust growth, which can reduce the occurrence of diseases and fruit rot.

2. Handle rotten fruits

If a small number of diseased and rotten fruits are found, the diseased flowers, diseased leaves and diseased fruits should be removed in time. To avoid the spread of diseases, we need to cut off the transmission routes, reduce the sources of disease, remove old leaves in time, and enhance permeability.

3. Soil treatment

When planting, soil with good permeability, good drainage and irrigation, loose texture and good fertilizer retention should be selected. Before planting, plant ash or lime powder should be used for disinfection. In addition, soil problems caused by continuous cropping can be solved by reasonable crop rotation.

4. High-ridge cultivation

To solve the problems of drainage and fruit contact with the ground, we can use high-ridge cultivation and drip irrigation for watering, which not only saves water but also ensures sufficient soil moisture for the plants' needs. After watering, ventilation should be maintained to reduce air humidity. Do not water in rainy weather.

5. Chemical control

If diseases are found, we need to use chemicals for control in time. Generally, the control agent we use is Trichoderma, which has a relatively good control effect and is effective against most diseases.