Now in June, it is the rainy season, heavy rains in many areas. In the past few days, heavy rains in various parts of Jiangxi have caused flooding of farmland, vegetable fields and orchards, while pepper growers have to do drainage and ploughing and soil. In order to prevent pepper anthrax, how to prevent it? Let's take a look at it.
First, the symptoms of pepper anthracnose
After the occurrence of capsicum anthracnose, it will cause a lot of defoliation and rotten fruit, usually reducing production by 20%-30%, which seriously affects the economic benefits of vegetable farmers. Capsicum anthracnose mainly infects fruits and can also damage leaves, stems and fruit stalks.
1. The leaves are infected, initially fading green water-soaked spots, gradually turning brown, with light gray in the middle, and small black spots on the lesions. The handle is damaged and brown spots are formed.
2. When the stem and the fruit stem are infected, irregular brown spots may appear, which are slightly sunken and easy to crack when dry.
3, the fruit is damaged, began to produce water-stained yellow-brown near-circular or irregular lesions, followed by a slight depression, the central gray-brown, with a raised concentric wheel pattern, dense small black spots on the wheel pattern.
Second, the cause of pepper anthrax
Generally, when the plots of the Solanaceae crops are connected or continuous, the rainwater drainage is poor, and the planting density is high, it is conducive to the occurrence of the disease; if the plant lacks the fertilizer deficiency, the plant disease resistance is weak, the field pathogen is large or the seed is infected, Also beneficial to the onset. Management is extensive, because the leaf spot disease is more deciduous, and the fruit is exposed to the sun in the hot sun, which can induce pepper anthracnose.
Third, pepper anthracnose prevention and treatment agent
If you find capsicum anthracnose, you can use anthrax with benzopyrazole, pyridox, prochloraz, pyrazole, dexamethasone, trifloxystrobin, tebuconazole, etc., pay attention to rotation medication . Or during the onset of the disease, after spraying a batch of capsicum fruit, spray it once, focusing on spraying the lower leaves and the back of the leaves.
Fourth, pepper anthrax preventive measures
1. Seed disinfection, soaking seeds with 1% copper sulfate solution for 30 minutes or 50% carbendazim wettable powder 500 times for 1 hour.
2, seriously ill field to stop planting the Solanaceae crop for 2-3 years, can be rotated with onion and garlic, cruciferous vegetables, etc., select the field crops can not make Solanaceae crops.
3. Strengthen field management, rational close planting, maintain good ventilation and light transmission conditions, reduce field humidity, and avoid damage to plant roots during cultivating and weeding. Balance the application of nitrogen, phosphorus, potassium fertilizer, appropriate amount of calcium, boron and other trace elements, avoid applying non-humic organic fertilizer. A small number of diseased fruits and diseased leaves were found to be removed and buried or burned. Prevent the sunburn of the fruit, clear the diseased body in the field, and reduce the source of infection.
4. In case of heavy rain, it is easy to cause plant growth and weakness due to poor drainage, and the disease resistance is reduced. The anthracnose can be multiplied. At this time, the water should be drained early. After the soil is slightly, the soil should be ploughed in time to improve the physical properties of the soil. If the facility is cultivated, the soil should be disinfected; the diseased fruit should be removed in time, the sediment adhering to the stems and leaves should be cleaned, and the roots should be cultivated in due course.
The above is about the introduction of capsicum anthracnose, I hope to help the majority of pepper growers!
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