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The spring pests and diseases of the tree include: pear big heartworm, aphids, red spiders, pear hibiscus, cockroaches, latent leaf tick and black star disease.
Prevention time and control measures Clean the orchard and scrape the bark from early spring to flower bud enlargement. Spread the plastic sheet under the tree, then scrape the skin and rough skin on the trunk and branches, but not the newborn skin. The rough longitudinal skin at the branches should be finely scraped. The scraped bark, larvae, and eggs are concentrated or burned. The dead leaves and residual dried fruits on the trees are destroyed and destroyed in the orchard. Finally, the whole tree is sprayed with sulphur mixture once.
100 grams of soil fungus danscens was applied before flowering, and the sputum was sprayed once after application to fully mix the pesticide with the soil.
At the beginning of the flowering period, the whole tree is sprayed 1000 times with the main effect of chlorocyanate once to prevent the chafer from harming the pear flower.
In the full bloom period, the whole tree is sprayed with 0.3% borax and 0.3% urea and 0.5% white sugar mixture, which can effectively promote the fruit setting rate of flowers.
After 10 days to 15 days after the falling flowers, the whole tree was sprayed 800 times with carbendazim and 1000 times of beta-cypermethrin mixed solution twice, 7 days apart. Mainly prevent black spot disease, mold heart and chafer, cockroach and so on. Such as the addition of 1500 times imidacloprid, can also treat the mites, hibiscus and aphids.
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