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What are the specific-effective fungicides for grape rachis brown blight?
Before the young buds sprout, spray 3-5 degrees Baumé lime sulfur mixture, or 45% crystalline lime sulfur 30-fold solution, 0.3% sodium pentachlorophenate 1-2 times; before and after flowering, spray 75% chlorothalonil wettable powder 600-800-fold solution, or 70% mancozeb wettable powder 400-600-fold solution, or 40% captan wettable powder
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What pesticide should be sprayed before the Crisp Pear blooms? Spraying scheme analysis
What pesticide should be sprayed before the Crisp Pear blooms? Please explain in detail: spray 5 degrees Baume lime sulfur once before spring bud break to eliminate overwintering pests and diseases. For trees infected with rot disease and black shank disease, scrape off the diseased spots and apply 843 Recovery Agent undiluted. For leaf pests such as pear aphids, pear psyllids, and aphid-eating weevils, from bud break to after petal fall, spray 20% fenvalerate 1000 times dilution, or 5% beta-cypermethrin 1000 times dilution plus 3000-4000 times dilution of 10% imidacloprid.
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