There are many diseases and pests in coffee, and prevention and control must implement the plant protection policy of “prevention-based, comprehensive prevention and controlâ€. The prevention and control methods are mainly to improve the environmental conditions and enhance the resistance of crops, prevent the introduction and reproduction of pathogens and pests, and eliminate the pathogens that have been transferred into Pests or prevent their spread and infestation. The main diseases that occurred in Fuba Village of Shangjiang Township were the diseases of the bacterium Fusarium and Anthracnose.
1. Symptoms of coffee anthracnose mainly occur on leaves, fruits and branches. After the leaves became infected, the upper and lower surfaces were pale brown lesions. The diameter was about 3 mm. The center was gray and white, and the edges were completely yellow. The later period became completely gray. There were black dots arranged in concentric rings and the lesions were mostly on the leaf margins. After the shoots became infected, brown spots were produced, which finally caused the shoots to recede. After the fruit became sick, a stiff fruit was formed. The pulp hardened and clung to the bean, with a purple spot on the peel and a fruit drop when severe.
Control methods: Use 1:1:200 Bordeaux mixture or 70% Chlorothalonil 600-800 times solution to spray once every 7-10 days during the onset of the disease, and spray 2-3 times.
2. Symptoms of Coffee Fusarium Disease: A branch or basal section of the main branch often has brown spots in the cortex. The lesion expands the bark of the ring, and the appearance of contracture appears on the outside. The dark brown vertical stripes are seen on the xylem. The leaves withered, the dried fruit was severe and the branches withered.
Control methods: spraying 80% thiophanate-methyl 800-1000 times solution or 25% carbendazim 400 times the diseased plants and the surrounding plants, strictly control the spread of the disease.
3. The symptoms of coffee-skinned takins are as follows: Spiral wounds of the larvae are spiral wounds on the cortex, which harm the seedlings and trees. As the phloem and stratum are cut off, nutrient transportation is affected, young trees die, and the middle and old trees grow weaker. , can not normally flower results.
Control methods: Strengthen field management, kill larvae manually, spray dry with 350 times dimethoate on sunny days from late May to early July, or brush the aging parts of the trunk with a mixture of “10 parts of water + 6 parts of lime + 0.2 parts of saltâ€.
1. Symptoms of coffee anthracnose mainly occur on leaves, fruits and branches. After the leaves became infected, the upper and lower surfaces were pale brown lesions. The diameter was about 3 mm. The center was gray and white, and the edges were completely yellow. The later period became completely gray. There were black dots arranged in concentric rings and the lesions were mostly on the leaf margins. After the shoots became infected, brown spots were produced, which finally caused the shoots to recede. After the fruit became sick, a stiff fruit was formed. The pulp hardened and clung to the bean, with a purple spot on the peel and a fruit drop when severe.
Control methods: Use 1:1:200 Bordeaux mixture or 70% Chlorothalonil 600-800 times solution to spray once every 7-10 days during the onset of the disease, and spray 2-3 times.
2. Symptoms of Coffee Fusarium Disease: A branch or basal section of the main branch often has brown spots in the cortex. The lesion expands the bark of the ring, and the appearance of contracture appears on the outside. The dark brown vertical stripes are seen on the xylem. The leaves withered, the dried fruit was severe and the branches withered.
Control methods: spraying 80% thiophanate-methyl 800-1000 times solution or 25% carbendazim 400 times the diseased plants and the surrounding plants, strictly control the spread of the disease.
3. The symptoms of coffee-skinned takins are as follows: Spiral wounds of the larvae are spiral wounds on the cortex, which harm the seedlings and trees. As the phloem and stratum are cut off, nutrient transportation is affected, young trees die, and the middle and old trees grow weaker. , can not normally flower results.
Control methods: Strengthen field management, kill larvae manually, spray dry with 350 times dimethoate on sunny days from late May to early July, or brush the aging parts of the trunk with a mixture of “10 parts of water + 6 parts of lime + 0.2 parts of saltâ€.
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