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2. Gold-patterned moth. One type of apple leaf miner, the larva sneaked into the leaves to feed, and when there were 8 to 10 plaques in a single leaf, the leaves turned yellow and fell off in advance. From mid-June to mid-September, the peak period of 3 to 6 generations of golden-grained moths was at the peak. In this period, the insects were chaotic and the number increased rapidly. Control measures: Hanging attractants trap adult insects, spraying 5% of chlorfenapyr No. 4 or 25% of chlorfenapyr No. 3, 2000 to 2500 times of liquid or 2.5% of Kung Fu, and 35% of Sai Dan.
3. Two-spotted spider mites (commonly known as white spiders). The peak period occurs mostly from early August to early September. The insect has strong fertility and resistance, and the common acaricide is difficult to control. Control measures: avermectin preparation should be used, and 1.8% of worms, quercetin 6000-8000 times solution, 10.2% of Manyuanqing 2500 times solution, 30% decane 3000 times Liquid control.
(Sanmenxia City Plant Protection Station, Sanmenxia City Horticultural Work Station Sun Xuewang Wang Shunping)
From: Henan Daily Rural Edition
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Pay attention to pests and diseases after bagging
After the fruit is bagged, we must do the following three kinds of pest control: 1. Brown spot disease. It mainly harms the leaves and causes early leaves of the fruit trees. From July to September, the diseased leaves will increase rapidly. The orchard that is too closed will have a lot of fallen leaves in the middle and late July, and the orchard with serious conditions will have a second flowering phenomenon from August to September. Control measures: strengthen summer pruning, improve ventilation and light transmission conditions, topdressing phosphate fertilizer, potassium fertilizer, or spraying rare earth auxin, molasses multivitamin, potassium dihydrogen phosphate, etc., to enhance tree nutrition and improve disease resistance. After the end of June, spray once every 15 days, you can choose 50% of the plaque, 50% of the chlorpheniramine, 25% of the plaque net (sclerotium net + zinc manganese), 80% of the 402 antibiotics 25% of the fruit is used (teproconazole + manganese zinc), 70% of manganese, or 70% of manganese, 70% of dry suspension, 42% of spray suspension can be used interchangeably. Bordeaux mixture has a good control effect on brown spot and can be sprayed once in late June and August.
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