How to prevent and control lily blight in lily cultivation?
How to prevent and control lily blight? What harm does blight do to lilies? We also ask readers to explain the harm of lily blight: Lily blight, also known as lily foot rot, mainly attacks stems, leaves, flowers, scales and bulbs. When the stem is infected, brown water-soaked rot appears at first, gradually spreading upward and downward, adding...
How to prevent and control lily blight? What harm does blight do to lilies? We also ask readers to explainThe harm of lily blight:
Lily blight, also known as lily foot rot, mainly attacks stems, leaves, flowers, scales and bulbs.
When the stem is infected, brown water-soaked rot appears at first, gradually spreading upward and downward, worsening the stem rot and causing the plant to collapse or die; when leaves are infected, small water-soaked spots appear at first and expand into large gray-green spots; when flowers are infected, they become soft and rotted; when the bulb is infected, water-soaked brown spots appear, which rot after expanding and produce a sparse white mold layer.
Conditions for the onset of lily blight:
The pathogen of lily blight grows within a temperature range of 10-32 degrees, growing fastest at 25 degrees. It adapts to pH 3.5-11.5; the optimum is 6. Damp weather with plenty of rain, especially after each heavy rain, and poor drainage favor the occurrence and spread of the disease.
Prevention and control methods for lily blight
Method one: Use raised beds with deep furrows or ridge cultivation, and when diseased plants are found, dig them out early and burn them in a centralized manner.
Method two: Apply fully decomposed organic fertilizer, increase potassium fertilizer, and improve disease resistance.
Method three: At the early stage of the disease, begin spraying 40% fosetyl-aluminum wettable powder at 250 times dilution, or 58% metalaxyl and mancozeb wettable powder at 500 times dilution, 64% sandofan wettable powder at 500 times dilution, 72% DuPont Curzate wettable powder at 800 times dilution. Stop applying the pesticide 3 days before harvest.
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