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What diseases and insect pests should be prevented when planting pear trees?

Published: 2024-11-05 Author: mysheen
Last Updated: 2024/11/05, What diseases and insect pests should be prevented when planting pear trees? Please introduce the main diseases and insect pests in pear planting: the disease is usually sprayed with fungicide 7 days after anthesis and sprayed again at intervals of 15 days. After 6 months, the protective agent was sprayed on a sunny day for 3 times with an interval of 15 to 20 days. Fungicides can be sprayed on trees during the rainy season. ① scab: more than 75% bacteria.

What diseases and insect pests should be prevented when planting pear trees? Please introduce the main diseases and insect pests in pear planting: the disease is usually sprayed with fungicide 7 days after anthesis and sprayed again at intervals of 15 days. After 6 months, the protective agent was sprayed on a sunny day for 3 times with an interval of 15 to 20 days. Fungicides can be sprayed on trees during the rainy season. ① scab: 75% carbendazim 800 times. ② black spot: 1.5% multi-antimycin 500x or 50% prohydantoin 1500 times. ③ ring disease: 75% chlorothalonil 800x. ④ pear heart borer: bagging or spraying 25% diflubenzuron No. 3 1500 times twice, or using pear small sex trap to kill adults and forecast, one trap for every 50 trees. It is reported that there are three traps hanging in the whole orchard, which will be hung in the peach orchard before July and in the pear orchard later. The method of measuring and forecasting by using insect sex hormone attractant is simple and sensitive. The sexual lure core with the commercial rubber head as the carrier is suspended above a basin about 20 cm in diameter, 2 cm from the water surface, and the basin is filled with water and a little washing powder. Then hang the basin trap in the orchard, 1.5 meters above the ground. Since the first ten days of April, the number of male moths trapped in the basin has been recorded daily or every other day. In general, 1 ~ 3 days after the peak of the moth, it is the beginning of the egg bloom, and spray is arranged immediately. Spray 25% diflubenzuron 1500 × 2000 times during the peak period of moth (adult). Click for more pear tree planting techniques click to get more fruit planting techniques

 
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