Pepper anthracnose, commonly known as wheel disease and shift disease, is a common disease of pepper caused by bacteria. It will cause deciduous and rotten fruits, which is generally distributed in China and has serious harm, resulting in a large area of harvest, which has become the main obstacle to pepper production. In this regard, we must take measures to prevent and control it.
1. Symptoms of pepper anthracnose.
After the fruit is damaged, water-soaked spots will appear, and the spots will continue to expand to form diseased spots. In the case of high humidity, there is a sticky substance on the surface. The leaves and stems also produce black, grayish-brown lesions.
2. Analysis of the causes of pepper anthracnose.
Capsicum anthracnose is caused by a bacterial infection. The pathogen overwinters in the soil and can also overwinter in plant residues. In the spring of the following year, when the environmental conditions are suitable, a large number of germs are released, which are spread through wind, rain, insects, etc. When pathogenic bacteria come into contact with healthy pepper plants, they germinate and invade the plant, causing pepper anthracnose.
3. Prevention and control methods of pepper anthracnose.
1.Choose disease-resistant varieties.
The selection of varieties with strong disease resistance is one of the effective methods to control anthracnose in pepper. When buying seeds, choose varieties that have been identified for disease resistance or varieties that are more resistant to disease from the region's conventionally grown varieties.
2.Strengthen field management.
Reasonable fertilization, watering, weeding and other field management measures can effectively improve the disease resistance of pepper. In terms of fertilization, more organic fertilizer and phosphorus and potassium fertilizer can be applied, and the use of fruit arhat + sodium nitrate naphthalene acetic acid can promote the absorption and growth of elements to enhance the disease resistance of plantsIn terms of watering, it is necessary to avoid flooding with water to prevent excessive humidity;In terms of weeding, weeds should be removed from the field regularly to reduce the spread of pathogenic bacteria.
3.Pharmaceutical prevention and control.
Pharmaceutical control is the most effective prevention and control method of pepper anthracnose. In the early stage of the disease, carbendazim, chlorothalonil and other agents can be sprayed for prevention and control. Spray every 7-10 days, 2-3 times in a row. It should be noted that different agents should be used alternately to avoid drug resistance.
4.Biocontrol.
Biological control is an environmentally friendly and efficient control method. The multiplication and spread of anthrax can be controlled through the use of biological agents, increased biodiversity, etc. For example, Bacillus, Trichoderma, etc. to control pepper anthracnose.
In short, for the prevention and control of pepper anthracnose, we need to strengthen field management, select disease-resistant varieties, scientifically and rationally use pesticides and biological control methods for comprehensive control. Only in this way can we effectively control the harm of pepper anthracnose and improve the yield and quality of pepper.