Monitoring and prevention of banana pests and diseases after typhoon. Not long ago, “Weimason†was successively registered in China's coastal cities, causing serious damage to bananas. For banana pests and diseases that are prone to occur after typhoon storms, the following prevention and control measures are recommended.
Enhance the growth of banana trees and increase their resistance to pests and diseases. After the typhoon storm, the uncut banana leaves are blown more, the wounds are more, the wounds will rot, and the growth of the whole banana tree is weak. It is recommended to spray foliar fertilizer and kill copper preparations (to prevent bacterial and fungal decay), and then apply fertilizer after 7~10 days after the leaves and roots are newly extracted to enhance the growth of the banana tree and improve the resistance to pests and diseases. .
Prevention and control of banana wilt. The banana wilt pathogen spreads with the running water, and the waterlogging root is susceptible to disease. Therefore, for the banana plantation in the area where the wilt disease occurs, the water should be removed as soon as possible to avoid the irrigation of the whole garden, which leads to blight in the whole garden.
3. Prevention and treatment of banana leaf spot and black spot disease. The typhoon storm can blow a complete blade of a larger banana tree into a plurality of small leaves, and the wound on the blade is more, which causes the spores of the pathogen to be easily invaded. The wind blows the conidia of the germs into the garden, and the spores of the rain are easy to germinate. Therefore, after the typhoon storm, the chances of leaf spot disease and black spot disease in the banana plantation increased greatly.
It is recommended that all hot pest and disease monitoring stations and farmers strengthen monitoring. When the leaf spot rate of leaf spot and black spot disease reaches 5%, it can be early warning. It is required to pay close attention to the development of the disease. When the incidence rate reaches 10%, the prevention and treatment can be taken.
Banana leaf spot disease is treated with propiconazole, tebuconazole, triadimefon, mancozeb and other agents for spraying and prevention. Banana scab is made of trifloxystrobin, tebuconazole and pyraclostrobin. Fungicides such as flusilazole, myclobutanil, difenoconazole, and tebuconazole are sprayed on fruits and leaves for prevention and treatment.
The control of banana weevil. The big banana tree was destroyed by the typhoon. The measures taken to resume production were to cut the banana tree at 1 meter and re-bud. The banana pseudo-stem weevil is a banana stalk. After the typhoon, there are a large number of banana stems for the reproduction of the pseudo-stem weevil. At the same time, the roots of the banana tree are more weak, so in this case, the elephant is extremely easy. outbreak.
When a banana weevil is found, take immediate control measures, use a pesticide such as chlorpyrifos or phoxim to spray the pseudostem or infuse the liquid from the base of the petiole, or inject the liquid at a height of 1.5 meters from the pseudostem of the infected plant. Residual plants in the banana plantation and normal growing banana trees should be treated.
Website: Monitoring and control of banana pests and diseases after typhoon
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