Botrytis cinerea can form sclerotium in the soil or overwinter on mycelia and conidia. Conidia can spread and spread with air currents and rain, and agricultural operations can also become an important route of transmission. Prevention and control of gray mold must seriously implement the comprehensive prevention measures of soil-borne diseases, but also must do a good job of ecological control and timely removal of the source of work.
Chemical control of gray mold and sclerotinia, the same drug can be used. At present, 50% of the more effective pharmaceutical agents are as follows: 800 times of mold decay, 1000 times of 50% nongrill, 800 times of 50% prohexine, 800 times of 50% polymyes and 1000 times of 65% prednisolone. 14% Shijiale 600-800 times, 40% Baidu 1500 times, 40% Sclerotium Net 3000 times, and 50% Kai Ze 1500 times.
When using any of the above-mentioned pesticides, it is better mixed with Tianda 2116 and Tianda Silicone 3000 times.
It should be noted that the application of sclerotium is very easy to produce phytotoxicity, for two reasons: First, the use of excessive concentrations, especially when the use of multiples below 1500 times, the most likely to occur phytotoxicity; Second, noon medication, the temperature is too high , phytotoxicity is prone to happen. Therefore, medication should be given in the afternoon in accordance with the correct use concentration.
In case of low temperature, rain, and snow, vegetables in the shed should not be sprayed to prevent disease. Because spraying will only increase the humidity in the shelter, it will not help prevent disease. You can use quick-release kerosene, 300 grams per acre, or quick-acting dust, with 1 kg per acre.
If sclerotinia occurs at the base of the stem of the vegetable, the colony will be sprayed and applied to the base of the stem.
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