What kind of disease is ginseng bacterial leaf blight?
What is ginseng bacterial leaf blight? Please provide an introduction. Symptoms of ginseng bacterial leaf blight: it is generally more common in 1-year-old and 2-year-old ginseng in recent years. The leaves of ginseng fade from the leaf tip or edge, and water-soaked lesions spread toward the stem part of the leaf. After fading, the leaves are white or light yellow. Some faded leaves look like white paper and have tension, and do not break easily when pulled by hand. Finally...
What is ginseng bacterial leaf blight? Please provide an introduction
Ginseng bacterial leaf blight Symptoms: it is generally more common in 1-year-old and 2-year-old ginseng in recent years. The leaves of ginseng fade from the leaf tip or edge, and water-soaked lesions spread toward the stem part of the leaf. After fading, the leaves are white or light yellow. Some faded leaves look like white paper and have tension, and do not break easily when pulled by hand. Finally the whole plant dies. There are no disease symptoms on the stem and root.
Cause: Pseudomonas syringae pv. lachrymans, a bacterium.
Pollution-free control: (1) Strengthen field management, apply fertilizer reasonably, and enhance the disease resistance of the plants. (2) For chemicals, use Longkejun plus foliar fertilizer for spraying, or Yekuzuo plus potassium dihydrogen phosphate, Zhongshengmycin plus dimethachlon, copper hydroxide plus thiophanate-methyl plus foliar fertilizer, spraying continuously 2-3 times, with an interval of 5-7 days each time, which can effectively control the occurrence of this disease.
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