After entering the month of July, Apple is in a period of vigorous growth. At the same time, with the changes in weather conditions, pests and diseases of all kinds of fruit trees are also aggravated. In order to prevent and control the fruit and vegetable pests during this period, plant protection will be held in Huangling County from July 9 to July 11. The station investigated 21 pest monitoring sites in 7 fruit industry towns across the county and investigated 324 mu of fruit trees. The average sickness rate of early leaf diseases was 75%, the diseased plant rate was 66%, and the diseased leaf rate was 7.9% (of which Spot disease, spotted defoliation disease mainly; rust disease rate is 32%, the average diseased plant rate is 18%, diseased leaf rate is 3.8%, serious orchard disease leaf rate is 61%, especially in the orchard around the “210†national highway in Houzhuang section. The most serious, single-leaf lesions up to 15; gold moth fine insect strain rate was 52%, janus leaf spot rate of 1.8%; leaf roller moth rate of 2.1%, red spider, spiny leaf miner and other sporadic occurrence. In July and August, the temperature increased further, rainfall was concentrated, and rainfall was high, which was favorable to the occurrence of early deciduous disease. It is expected that the early defoliation of fruit trees such as defoliation and gold-lined moths will aggravate. It is hoped that the broad masses of fruit farmers will take active actions to prevent and control the diseases and pests of fruit trees. It will be very important to control the occurrence of pests and diseases at later stages of fruit tree growth.
Prevention:
1. Agricultural control: Strengthen the management of orchard water in orchards, increase tree vigor to improve the resistance of the trees, cut off the shoots and shoots, and remove the sick bodies from the orchard.
2. Physical control: 3 gold traps are hung per acre, trapping and killing insects such as gold moths and insect pests.
3, pharmaceutical control:
(1) 1:2:200 (copper sulfate 1 kg: quicklime 2 kg: water 200 kg) Bordeaux spray, spray once every 15-20 days.
(2) 80% mancozeb WP 800 times + 70% thiophanate-methyl water dispersible granules 1000 times + 2.5% cyfluthrin aqueous emulsion 2000 times + 8% ivermectin EC 4,000 times spray.
(3) 5% bupreconazole 43% or myclobutanil 4000 times + 25% diflubenzuron 1500 times spray.
(4) 50% Alphaaluminium Manganese Zinc Wettable powder 800 times + 5% Aldehyde alcohol wettable powder 2000 times + 40% chlorpyrifos EC 1500 times + 20% Porphyrin powder 3000 times, Starscream occurred in the orchard.
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