Control Methods for Phomopsis Leaf Spot on Pineapple Trees
How do you control Phomopsis leaf spot on pineapple trees? What harm does Phomopsis leaf spot on pineapple trees cause? Please provide an introduction. Harm of Phomopsis leaf spot on pineapple: Phomopsis leaf spot on pineapple is a common disease, belonging to one type of leaf spot disease. It mainly damages leaves, affects leaf photosynthesis, and causes...
How do you control Phomopsis leaf spot on pineapple trees? What harm does Phomopsis leaf spot on pineapple trees cause? Please provide an introduction.Harm of Phomopsis leaf spot on pineapple:
Phomopsis leaf spot on pineapple is a common disease, belonging to one type of leaf spot disease. It mainly damages leaves, affects leaf photosynthesis, and prevents the fruit tree from growing and developing normally.
Occurrence characteristics: The pathogen mainly overwinters on diseased leaves in the form of mycelium. In the following year, when conditions are suitable, the pathogen produces a large number of conidia, which are mainly spread by wind, rain, and insects. The pathogen has weak parasitism and invades through wounds. In fruit tree cultivation and management, orchards with extensive management and weaker tree growth are prone to the disease. This disease favors high-humidity environments, so attention should be paid during the control process.
Control methods for Phomopsis leaf spot on pineapple:
(1) Strengthen orchard management: fertilize and irrigate reasonably to enhance tree vigor and improve the tree's disease resistance. Prune scientifically, cut off dead branches and diseased leaves, regulate ventilation and light penetration, pay attention to drainage measures, reduce orchard humidity, and maintain appropriate temperature and humidity in the orchard. Combined with pruning, clean up the orchard, promptly remove diseased leaves and dead branches and fallen leaves, and reduce sources of the disease.
(2) Chemical control: When necessary, pesticide spraying can be carried out. The available agents are 50% carbendazim wettable powder 500-800 times liquid or 50% thiophanate wettable powder 500-800 times liquid.
Commonly used agents: carbendazim, thiophanate.
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