Fruit tree heartworms need early prevention and early treatment
The fruit tree borer is a general term for moth larvae that invade into the fruit. It mainly includes Pyrosphaeridae, P. grandis, P. sinensis (Peach Moth). Drug prevention and control on the ground under the tree When the larvae reach the initial stage of emergence, the first ground application should be started. Can be used 40% methylisohexyl phosphate EC 200-300 times, evenly sprayed in the tree tray, can also be sprayed on the ground under the tree, the insecticidal effect is very good. For the pear borer, peach borer, and so on, the sex attractant can be hung in the orchard, and the number of trapping insects can be checked every day. Usually, 15 acres of orchards can be hung. When the number of trapped worms increases dramatically, check the eggs once every 3 days. When the rate of egg fruit reaches 0.5%-1%, it can be treated with medicaments. The main agents are (1) 20% diflubenzuron suspension or 25% diflubenzuron WP 3000-4000 times. (2) Weiyuan Luan (1% methylamino avermectin benzoate) 3000 times solution or Weiyuan Luyuan (2.0% emamectin benzoate) 4000 to 5000 times solution or Wei Yuanhong A (2.15% emamectin benzoate) 6000 to 8000 times + high 2000 times or high 3000 times. (3) When the number of insect populations is large, it is necessary to spray them once every 15 days, and it is advisable to spray 2 to 3 times continuously. Manually control over-wintering to scrape rough skin from trunks; clear gardens in winter, clean up fallen leaves, weeds, etc.; and thoroughly purify fruits of pear borer pests before larvae are infested until fruiting time. This is a key measure to eradicate pear borer pests; Collecting fruit snails is a detrimental problem. Reasonably planting tree species, try not to mix peaches and pears or adjoin each other.
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