What types of pests and diseases affect jasmine?
What pests and diseases affect jasmine? Here is an introduction. Jasmine has the following pests and diseases: 1. Diseases ① Brown spot disease: promptly prune off diseased leaves and diseased branches, and spray the leaf surface with 80% zineb wettable powder at 500-700 times dilution, or 80% mancozeb wettable powder at 400-600 times dilution, spraying once every 10-15 days for 3-5 consecutive sprays....
What pests and diseases affect jasmine? Here is an introduction.
Jasmine has the following pests and diseases:
1. Diseases
① Brown spot disease: promptly prune off diseased leaves and diseased branches, and spray the leaf surface with 80% zineb wettable powder at 500-700 times dilution, or 80% mancozeb wettable powder at 400-600 times dilution, spraying once every 10-15 days for 3-5 consecutive sprays. When spraying, spray evenly on both the front and back of the leaves.
② Southern blight: in the early stage of the disease, spray the base of the plant and the surrounding soil with 50% amobam aqueous solution at 1000 times dilution, and after 7-10 days, spray once more. After that, use 70% thiophanate wettable powder at 1000 times dilution, or 50% carbendazim wettable powder at 1000 times dilution, or Lüheng No. 1 at 3000 times dilution; or Lüheng No. 2 at 800 times dilution to drench the soil around the roots, in order to inhibit the spread of the disease. After severely diseased plants are pulled out, the planting holes can be irrigated with 50% amobam aqueous solution at 500 times dilution, or the diseased holes can be sprinkled with lime powder to disinfect the soil. For potted plants, the soil can be changed in time, and the growing medium (potting soil) and the plant can be sprayed and disinfected with Lüheng No. 1 at 3000 times dilution; after potting, change the placement site and keep the potted plants in a sunny, well-ventilated place for care.
③ Anthracnose: promptly remove and destroy diseased leaves and diseased shoot tips, and spray the leaf surface with 75% chlorothalonil wettable powder at 800-1000 times dilution, 12% copper green emulsifiable concentrate at 600-800 times dilution, 70% thiophanate-methyl wettable powder at 1000 times dilution, 60% anthracnose thiram wettable powder at 800 times dilution, etc., choosing one or alternating two or more of them, spraying once every 5-7 days, for 4-6 consecutive sprays depending on the severity of the disease.
2. Insect pests
① Leaf roller: in the early stage of larval occurrence, spray to kill with 80% dichlorvos emulsifiable concentrate at 1500-2000 times dilution, or with 90% trichlorfon at 1000 times dilution.
② Red spider mite: use 5% hexythiazox emulsifiable concentrate at 3000 times dilution, 40% omethoate emulsifiable concentrate at 1500-2000 times dilution, 73% propargite emulsifiable concentrate at 2000 times dilution, etc., spraying in the early stage of occurrence, alternating two or more pesticides, spraying once about every 5 days for 2-3 consecutive sprays.
③ Aphids: spray to kill with 50% pirimicarb (pirimor) wettable powder at 3000 times dilution, or with 25% imidacloprid wettable powder at 10000-20000 times dilution.
④ Scale insects: they can be removed by manual brushing, or sprayed to kill with neutral laundry detergent diluted 150 times with water, or 20% bifenazate ultra-fine wettable powder at 1000-1500 times dilution.
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