How to control gray spot of Euonymus tomentosa?
The methods to control the gray spot of Populus tomentosa are as follows: first, strengthen plant quarantine and select healthy seedlings. Second, strengthen tending and management, cultivate strong seedlings and enhance plant disease resistance. Third, thoroughly remove diseased leaves and diseased fallen leaves in autumn, winter and early spring, concentrate on burning, and reduce the source of infection. 4. in the early stage of the disease, the plants were sprayed with 200-fold liquid of non-toxic high-fat membrane every 20 days for 3 to 4 times continuously. Fifth, during the epidemic period of the disease, spray 50% carbendazim or 75% chlorothalonil 500 to 1000 times, use alternately, spray 4 to 5 times continuously.
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How to control anthracnose of Euonymus tomentosa?
The methods to control anthracnose of Euonymus tomentosa are as follows: first, collect diseased branches and leaves in autumn and winter and burn them centrally to reduce the source of the disease. Second, in the early stage of the disease, 75% chlorothalonil wettable powder 500 times, or 50% anthrax Fumi wettable powder 500 times, or 1: 1: 160 Bordeaux, or 50% carbendazim wettable powder 800 times.
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Opinions on the control of Ostrinia furnacalis in overwintering generation
The yellow poplar silk wild borer is one of the important leaf-eating pests of forestry plants in this area, which is mainly harmful to melon seeds and sparrow tongue. The pest has been comprehensively controlled for 2-3 times since the early spring of this year, and the pest has been effectively controlled. However, because the pest has been damaged for a long time and can last until the end of October, it is necessary to continue to track and inspect the pest. According to the two-point monitoring of Anting Ginkgo Garden and Fangtai Garden, it was reported that a moth peak appeared in the first and middle of September, and the number of moths was the highest from September 7 to 9, with an average daily moth of 22.3 per lamp.
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