MySheen

How to prevent and cure round spot disease of Panax notoginseng

Published: 2024-11-06 Author: mysheen
Last Updated: 2024/11/06, It can damage all parts of the plant, and the back of the leaf shows small yellow spots at the initial stage of the disease, and rapidly expands into a transparent circle in wet or continuous rainy days. When the weather is dry after the disease, the disease spot is large, round brown, with obvious wheel patterns. When the stem is damaged, the damaged part is chestnut color, and the diseased part has a gray-white mildew layer, which can cause bud rot and stem base rot. Prevention and control methods: first, in the epidemic season, open the ventilation door of Panax notoginseng garden to increase air flow and reduce humidity in the garden. The second is to adjust the light intensity of Panax notoginseng to avoid excessive light, which is conducive to the spread of the disease.

It can damage all parts of the plant, and the back of the leaf shows small yellow spots at the initial stage of the disease, and rapidly expands into a transparent circle in wet or continuous rainy days. When the weather is dry after the disease, the disease spot is large, round brown, with obvious wheel patterns. When the stem is damaged, the damaged part is chestnut color, and the diseased part has a gray-white mildew layer, which can cause bud rot and stem base rot.

Prevention and control methods: first, in the epidemic season, open the ventilation door of Panax notoginseng garden to increase air flow and reduce humidity in the garden. The second is to adjust the light intensity of Panax notoginseng to avoid excessive light, which is conducive to the spread of the disease. The third is to remove the remains in time, remove the diseased plants in time, burn them or bury them deeply, and spray 70% methyl thiophanate wettable powder 600 times 800 times, or Antaisheng 600 times.

 
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