What are the main diseases and insect pests in pear planting?
What are the main diseases and insect pests in pear planting? Please introduce the following common diseases and insect pests in ticket planting: first, pear tree rot mainly harms the bark of main branches and side branches, causing rot. There are two kinds of symptoms: ulcerative type and withered type, and in severe cases, a large number of withered branches appear until death. In the process of prevention and control, it is necessary to strengthen orchard management, control fruit setting, improve tree disease resistance and select disease-resistant varieties. Cut off the diseased branches in time, scrape off the scars, burn them centrally, and smear 30 to 60 times of Fumei arsenic wettable powder. Pear trees were sprayed with 40% Fumei arsenic wettable powder 100 times or decaying enemy 100 times before germination, or Baume 5 degree stone sulfur mixture. Pear black spot is a common disease in pear trees, which mainly harms fruits, leaves and shoots. Leaf spots begin to appear from late April to early May in Liaoning Province when the average temperature is from 13 ℃ to 15 ℃, and the disease is the most serious from May to June. On the other hand, the fruit generally began to fall ill in the first ten days of May, cracked and fell off in the middle of June, and fell the most in late July. The key point of control is to strengthen cultivation management, increase the application of organic fertilizer and avoid partial application of nitrogen fertilizer. Combined with winter pruning, remove withered branches, fallen leaves and diseased fruit in the garden and bury them deeply. The trees in the seriously diseased garden were sprayed with 0.3% pentachlorophenol sodium and 5Be stone sulfur mixture before germination, and after falling flowers, they were sprayed again with 200x lime Bordeaux solution, or 1000 times of Dysenamine, 1000 to 1500 times of 10% polyoxymycin wettable powder, but not more than 3 times a year. The alternating use of the above agents and Bordeaux liquid can improve the control effect and reduce the cost. Click for more pear tree planting techniques click to get more fruit planting techniques
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How should pear tree planting be managed in spring?
How should pear tree planting be managed in spring? Please give guidance pear planting spring can refer to the following methods for management: First, strengthen fertilizer management 1, apply good bud fertilizer: after the Spring Festival, adult pear trees, each tree special fertilizer 1.5 kg, 2003 along the mountain ecological construction planting young trees each tree supplement fertilizer.
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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.
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