What diseases and insect pests should be prevented when planting pear trees?
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
- Prev
How to manage pear trees after picking
How to manage pear trees after picking? Please introduce the management of pear trees after picking can refer to the following methods: first, after fruit picking, all kinds of weeds and litter in the garden must be removed in time, and the shade branches inside the crown must be cut off. disease and insect branches, weak branches, dry and withered branches, overlap outside the crown.
- Next
How to prevent pear blackheart disease?
How to prevent pear blackheart disease? Black heart disease is a physiological disease that occurs during storage of pear. Pear can be infected after 30-50 days of storage in cold storage at 0℃. Brown patches can be found on the outer skin of the fruit core at the initial stage of the disease, gradually extending to the whole fruit core, and brown patches with unclear boundaries can also be found in the flesh part when it is severe.
Related
- Moge, come on! The staff of the peasant association in the producing area of cantaloupe were frightened when the crowd gathered.
- Causes and Solutions of low Fruit setting rate of Apple
- Symptoms and control measures of passion fruit virus disease
- Fruit growing lesson: how do apple orchards keep high yields?
- Can you build orchards in the mountains? What are the pros and cons?
- How to manage the coloring period of Crisson grape?
- This paper introduces the processing technology of two kinds of fig products.
- How much is a month for retired teachers in rural areas by 2020?
- How can strawberry planting increase sugar content? We should pay attention to management in many aspects.
- What are the cultivation techniques on how to improve the yield of golden fruit?