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Banana mosaic heart rot prevention and treatment
Mosaic heart rot causes intermittent and long or short chlorotic yellow stripes and prismatic circle spots on the leaves. When the disease develops further, the young leaves of the diseased plants will be severely yellowed or mottled, and the inside of the heart and pseudostems Some parts of the water stains, then necrosis, brown and rot, rot can sometimes even occur in the roots. This is a viral disease. The main primary infestation source is the field strain and its sucker, which can be transmitted through aphids and calyx. In addition, pests that often harm bananas include banana weevil (banana long-necked elephant, banana root-necked elephant), which are mainly larvae. They feed on the middle and lower banana stalks and form criss-crossing insect paths from the outside to the inside, causing rot or rot. fold. The larvae have a body length of 14–18 mm, a body width of about 4 mm, and milky white to milky yellow. If the garden is clear: it is necessary to deepen the soil, disinfect the soil, and conduct crop rotation to avoid planting or planting melons and legumes in the banana planting area to prevent the mosaic virus infection and reduce insect vectors. Leach 3% lime water every two weeks to neutralize the acid in the soil and change the environment. If it is still planted in situ, it must be dug out diseased bananas, taken out of the field and buried deep, and when purchasing tissue culture seedlings (test tube seedlings), it must be of reliable quality to ensure that it is truly detoxified, and the original diseased plants cannot be used for sucking. Chemical control is also necessary. The following options are available: 1. Agents that can inhibit viruses and increase resistance to bananas, such as "viruses" and "virus A". 2. It can spray some foliar fertilizers that promote long growth and increase resilience, such as "Lufengsu" and "plant-protecting hormone". 3, to kill like a class of pharmaceutical agents, such as "jump a must", "beetle net", "Kung Fu" and so on. 4. There may be other fungi such as Pythium and Phytophthora in the rot bananas. If necessary, the drugs such as "Benconin", "Puytec", "Root and Ning" can be sprayed.