At present, the greenhouse tomato is in the flowering period. According to the survey, some grey molds began to occur in the greenhouse, and the disease rate was 2%-5%. Botrytis cinerea is developing rapidly and has great harm. It is hoped that the majority of farmers will strengthen prevention.

The disease mainly harms the fruit and can also harm the leaves, stems and flowers. By rain, air flow and agricultural operations spread. The fruit is infected and firstly invaded from the remaining stigmas or petals, and then spreads to the fruit or stalk, causing the peel to appear gray and having a thick layer of gray mold, showing watery rot. The incidence of leaf disease begins with the formation of a "V"-shaped plaque inward from the tip of the leaf. Low temperature, rainy weather, hazy weather, low light, and high humidity are conducive to disease occurrence and epidemic.

Prevention and control points: 1. Strengthen ventilation management. When conditions permit, ventilation should be strengthened during the day. Rainy and hazy weather must also be ventilated to reduce the humidity inside the shelter and reduce the incidence of disease.

2. Control the watering properly. In the initial stage of disease, watering should be controlled. In particular, flooding should be strictly prohibited and the humidity in the shed should be reduced as much as possible.

3. Clean the pastoral. Remove the diseased fruit, diseased leaves and the old leaves of the lower part in time, bring it out of the field and burn it deeply to prevent cross-infection of pathogens.

4. Chemical control. At the time of the initial appearance of gray mold, it usually appears in the old flowers and middle and lower leaves. It can use 40% pyrimethanil suspension agent 800-1000 times, 50% acetaminophen 1000 times, 65% tymefone WP 1000- 1500 times liquid, sclerotium net 800 times, 75% chlorothalonil 800 times, 75% thiophanate-methyl 800 times spray control, spray 5-7 days, even spray 2-3 times, pay attention to rotation Medication. When adding flowers, add pyrimethanil and other agents to prevent. Even cloudy days, switch to Chlorothalonil dust or aerosol control.

Electroric Lock Safe Box

Electronic Lock Safe Box,Home Security Electronic Lock Box,Electronic Key Safes,Electronic Lock

Hebei Tiger Brand Group Jia Bao Cabinet Industry Co. LTD , https://www.cntigersafe.com