What pests and diseases occur during pineapple cultivation?
What diseases affect pineapple? How can pineapple diseases be well prevented and controlled? Please advise. The main pineapple diseases are: wilt disease, black rot and heart rot of seedlings; the damage and prevention and control methods of the following diseases can be seen in the list below. Damage and prevention and control methods of pineapple wilt disease: after the plant becomes diseased, the leaves soften and droop,...
What diseases affect pineapple? How can pineapple diseases be well prevented and controlled? Please adviseThe main pineapple diseases are: wilt disease, black rot and heart rot of seedlings; the damage and prevention and control methods of the following diseases can be seen in the list below.
Damage and prevention and control methods of pineapple wilt disease:
After the plant becomes diseased, the leaves soften 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; when planting, soak the heads 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 25% Zhongke Meiling 1500-fold solution. If diseased plants are found, dig them out promptly to prevent spread.
Damage and prevention and control methods of pineapple black rot:
The affected fruit core turns black and gradually expands until the whole fruit rots. The pathogen mostly invades through wounds at the places where suckers are removed and at the fruit stalk wounds from harvesting.
Prevention and control methods: take care not to remove the crown or harvest fruit on rainy days, so as to reduce opportunities for pathogen invasion. This disease is also a major disease of stored fresh pineapple fruit.
Damage and prevention and control methods of pineapple seedling heart rot:
The seedlings rot at the heart and die. It is mainly caused by heating during stacking or by water accumulation.
Prevention and control methods: avoid stacking seedlings for too long, especially during long-distance transport, where stacking for too long should be minimized as much as possible, so as to avoid high temperature, high humidity and poor ventilation causing heating and damage to the seedlings. Spread them out immediately upon arrival at the destination, dry them slightly in the sun for 1~2 days before planting, avoid planting on rainy days, and pay attention to deep plowing and shallow planting.
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