Analysis of the Causes of Strawberry Fruit Rot and Solutions
Strawberry is a fruit with relatively high economic value, and many people grow it, but many growers often encounter the problem of strawberry fruit rot, which affects both yield and the economic returns of growers. To do a good job of preventing and controlling strawberry fruit rot, you must first understand the causes of the rot. Let's take a look at the details below.
I. Causes of Fruit Rot
1. Diseases
Disease is one of the main causes of strawberry fruit rot. Since strawberries are now all grown in greenhouses, and the temperature and humidity inside greenhouses are relatively high with poor ventilation, pathogens like to reproduce in this kind of environment. Strawberries lying close to the ground are even more likely to become infected, and this can also cause cross-infection among multiple diseases. Once infected, fruit rot easily forms in humid environments, leading to strawberry fruit rot. The diseases that cause strawberry fruit rot include powdery mildew, gray mold, Phytophthora fruit rot, sclerotinia rot, and anthracnose.
2. Poor Soil Conditions
Poor soil conditions in strawberry cultivation can also cause fruit rot. If the soil is heavy and clayey, with poor permeability, low nutrients, and insufficient fertilizer supply, plus the pathogens and harmful substances brought by continuous cropping, the fruit is highly prone to infection and rot.
3. Improper Cultivation Management
Some fruit growers apply fertilizer blindly when planting, with a bias toward nitrogen fertilizer. Nitrogen fertilizer promotes rapid plant growth, but excessive application of nitrogen fertilizer very easily causes plants to grow leggy, which lowers plant resistance and makes them susceptible to disease. In addition, applying organic fertilizer that is not fully decomposed can also lead to fruit rot.
II. Prevention and Control Methods
1. Select Good Varieties
When planting, choose varieties that grow robustly and have strong disease resistance, so as to reduce the occurrence of disease and reduce the occurrence of fruit rot.
2. Soil Treatment
Practice reasonable crop rotation to solve the soil problems caused by continuous cropping. In addition, when planting, try to choose soil that is loose, well aerated, drains well, and has good fertility. Before planting, it is best to disinfect it with lime powder or plant ash.
3. High-Ridge Cultivation
High-ridge cultivation can solve the problems of drainage and fruit touching the ground. Using drip irrigation to water can save water and also avoid the soil becoming too dry or too wet. After watering, strengthen ventilation to reduce air humidity, and do not water during rainy weather.
4. Handle Rotten Fruit
When disease occurs and a small amount of rotten fruit appears, promptly remove diseased leaves, diseased flowers, and diseased fruit to cut off the transmission route and reduce the source of disease. Also promptly remove old leaves to increase permeability and prevent the disease from spreading further.
5. Chemical Control
Once disease is found, carry out chemical control promptly. The commonly used control agent is Trichoderma, which can control most diseases and has a relatively good effect.
The above are the causes of strawberry fruit rot and the solutions. We hope it can help you. If you want to learn more about strawberry cultivation, please follow us.