Pears are widely cultivated across the country, and a serious branch disease has been reported in many production areas. This disease is particularly severe in North and Northeast China, where it poses a major threat to pear trees. It primarily affects fruit-bearing trees that are 7 to 8 years old or older, with infections mainly targeting the main branches and larger lateral branches. When the lesions encircle the entire main branch, they can cause the death of the main and lateral branches. In severe cases, the disease can also affect the trunk, leading to tree death and significant damage to orchards.
Control measures include both agricultural and chemical approaches. Agricultural control involves proper fruit load management, improved water and fertilizer practices, and a focus on organic fertilizers to maintain balanced levels of nitrogen, phosphorus, potassium, and essential micronutrients. This helps keep the tree vigorous. Additionally, whitewashing the trunks during winter can prevent frost damage and reduce pathogen colonization. It's important to promptly apply protective coatings to any wounds, such as those from pruning or cutting.
For chemical control, it's recommended to scrape off infected areas during spring and the active growth period, then apply protective treatments. Medications like Corbicillin, Cortila, and 9281 have proven effective. A mixture of seven parts soybean oil with three parts carbendazim or thiophanate-methyl can also be used for better control results.
If you encounter other issues in fruit tree management, you can seek help through the SMS platform provided by this newspaper. To send a message, mobile users should type "115+ content" and send it to 8733888. The cost is 0.5 yuan per message. For Unicom users, the format is “15#15+ content†sent to 9733888, with a fee of 0.8 yuan per message. This service is designed to support farmers and growers in real-time.
Adipic Acid
Adipic acid is mainly used in producing nylon fiber and engineering plastics, and polyurethane in quantity. Most of parts are used to produce PU, liquid for sole, polyurethane foam, etc. A small number of them are used for high quality lubricating oil.
High quality ester of adipic acid can be used as PVC and its copolymer, plasticizer of natural synthetic rubber. A large number of adipic acid ester is used to produce food packaging, thin film and PVC for insulation.
Adipic acid is also used for sour agent of food and drink. It is not easy to deliquesce, so it is used in dry food, and can be kept in a long time.
Adipic Acid 124-04-9,Adipic Acid,Adipic Acid Raw Material,99.7%Min Adipic Acid,Fine Adipic Acid
Shandong Tiancheng Chemical Co., Ltd. , https://www.tianchengchemical.com