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What are the control methods for Panax notoginseng pests and diseases?

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1. Yellow rust: both sides of the leaves are covered with rust powder, and in severe cases the leaves drop off. Once diseased plants are found, dig them out immediately; in the early stage of the disease, spray with 0.2 degrees Baume lime sulfur mixture, once every 7 days, for 2 to 3 times in a row. 2. Anthracnose occurs under rainy and excessively wet conditions. After seedlings or mature plants are infected, brown spots appear on the stems and leaves, later merging into large spots with yellow-green edges, and finally the plants rot and die. Adjust the light transmittance of the shade shed so that the light transmittance is uniform; in the early stage of the disease, spray with 1:1:200 Bordeaux mixture or 65% zineb 300 times dilution. 3

1. Yellow rust: both sides of the leaves are covered with rust powder, and in severe cases the leaves drop off. Once diseased plants are found, dig them out immediately; in the early stage of the disease, spray with 0.2 degrees Baume lime sulfur mixture, once every 7 days, for 2 to 3 times in a row.

2. Anthracnose occurs under rainy and excessively wet conditions. After seedlings or mature plants are infected, brown spots appear on the stems and leaves, later merging into large spots with yellow-green edges, and finally the plants rot and die. Adjust the light transmittance of the shade shed so that the light transmittance is uniform; in the early stage of the disease, spray with 1:1:200 Bordeaux mixture or 65% zineb 300 times dilution.

3. Phytophthora blight, also known as "leaf-dropping rot." The stems and leaves look as if scalded by boiling water, semi-transparent, the leaves droop, and the roots rot. Before the disease occurs, spray with 1:1:200 Bordeaux mixture or 50% carbendazim 1000 times dilution.

4. The slug, also known as the snout moth, is a mollusk. It bites and feeds on seed buds, stems and leaves, leaving notches. It feeds and causes damage at night and in the early morning. Control methods: spread lime around the fence, use vegetable leaves to lure and trap them for killing, or spray with 3% lime water or 600 to 800 times dilution of duomieling.

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