How to control pear scab
At the beginning of fruit infection, pale yellow spots were produced, and the spots were slightly depressed after expansion, with black mold. Later, the spots became cork and cracked. Its control measures: pear scab damage fruit early stage, spraying chemicals are 1:2:200 bordeaux mixture;70% methyl topril WP 800~1000 times solution;50% carbendazim WP 800 times solution.
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Methods of fertilizing pear trees
First, the amount of fertilizer applied. Generally speaking, the production of 100kg pear fruit requires 0.47kg of pure nitrogen, 0.23kg of pure phosphorus, 0.48kg of pure potassium, and the ratio of nitrogen, phosphorus and potassium is 1pur0.5. If the yield of pears is 2500 kg per mu, 11.75kg of nitrogen, 5.75kg of phosphorus and 12kg of potassium are needed per mu. In the actual production, but root.
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Control of scab in pear trees
1. Strengthen the management of orchards. The growth of pear trees is weak and is easy to be infected by bacteria. Therefore, the application of fertilizer, especially organic fertilizer, can enhance the tree potential and improve the disease resistance. two。 Chemical control. About 70% of pear trees should be sprayed before flowering and about 70% of falling flowers to protect inflorescences, shoots and new leaves. In the future, according to the rainfall.
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