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Detailed Explanation of Prevention and Control Methods and Key Technical Points for Panax notoginseng Blight

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Blight, also known as "leaf-drooping rot," begins to occur from April to May, and becomes severe from July to August. After being affected, dark green irregular lesions appear on the leaves or petioles, and the lesion color then deepens. The affected parts become soft, and the leaves look as if they have been scalded with boiling water, appearing semi-transparent, and later dry up or droop and stick to the base of the stems. Prevention and control methods: First, after harvesting the fruit, cut off the aboveground parts, clean the field, and spray the bed surface with 1-2 degrees Baume lime sulfur mixture for disinfection. Second, before the disease occurs, spray 1:1:200 Bordeaux mixture or 50% carbendazim 1000x solution, once every 7 days, for

Blight, also known as "leaf-drooping rot," begins to occur from April to May, and becomes severe from July to August. After being affected, dark green irregular lesions appear on the leaves or petioles, and the lesion color then deepens. The affected parts become soft, and the leaves look as if they have been scalded with boiling water, appearing semi-transparent, and later dry up or droop and stick to the base of the stems.

Prevention and control methods: First, after harvesting the fruit, cut off the aboveground parts, clean the field, and spray the bed surface with 1-2 degrees Baume lime sulfur mixture for disinfection. Second, before the disease occurs, spray 1:1:200 Bordeaux mixture or 50% carbendazim 1000x solution, once every 7 days, for 2-3 consecutive times.

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