What are the common pests and diseases of pineapple? A detailed guide to prevention and control methods
What pests and diseases of pineapple need to be prevented? Please introduce the following pests and diseases that need to be controlled during pineapple cultivation: wilt disease. After the plant is affected, the leaves become soft and droop, the leaf color changes from pale green to red, the base rots, and finally the whole plant dies. This disease is caused by damage from mealybugs. Prevention and control methods: first, strictly take care not to use diseased seedlings for propagation.
What pests and diseases of pineapple need to be prevented? Please introduce
During pineapple cultivation, the following pests and diseases need to be controlled:
Wilt disease
After the plant is affected, the leaves become soft and droop, the leaf color changes from pale green to red, the base rots, and finally the whole plant dies. This disease is caused by damage from mealybugs. Prevention and control methods: first, strictly take care not to use diseased seedlings for propagation. Second, promptly eliminate mealybugs. At planting time, soak the tops in a 500-fold dimethoate solution, place them upside down to dry, and then plant. If mealybug damage is found after planting, promptly spray a 500-fold dimethoate solution, or a 1500-fold solution of 25% Zhongke Meiling. If diseased plants are found, dig them out promptly to prevent spread.
Black rot
The affected fruit core turns black and gradually expands until the whole fruit rots. The pathogen mostly invades through wounds at the bud removal site and the fruit stalk wound from harvesting. Prevention and control methods: be careful not to top the plants or harvest fruit on rainy days, to reduce opportunities for pathogen invasion. This disease is also a major disease of stored fresh pineapple fruit.
Seedling heart rot
Seedlings rot at the heart and die. It is mainly caused by heat buildup during stacking or by waterlogging. Prevention and control methods: avoid stacking seedlings for too long, especially during long-distance transport, where stacking time should be reduced as much as possible to avoid heat buildup damaging the seedlings due to high temperature, high humidity and poor ventilation. Once they arrive at the destination, spread them out, sun-dry them slightly for 1~2 days, and then plant. Avoid planting on rainy days, and pay attention to deep plowing and shallow planting.
Crickets
When the fruit ripens, it may be bitten by large-headed crickets, which makes the fruit poor in quality and turns it into a substandard fruit. Prevention and control methods: use 5 kg of rice bran and 1 kg of cooked sweet potato, mix in a small amount of pickled vegetable juice, then add 100 g of 90% trichlorfon crystals, and make poisoned bait the size of beans. In the evening, scatter the bait around the plants to trap and kill them.
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