How does ginseng gray mildew prevent?
How to prevent and cure ginseng botrytis? Please introduce the symptoms of Ginseng Botrytis cinerea: damage to ginseng leaves, the disease spot on the leaf is limited by the vein, showing polygonal or irregular shape. A light brown, sparse gray-white or yellowish thin mildew layer on the back of the lesion, that is, the cyst peduncle and sporangium of the pathogen. In the later stage, the lesion tissue was easy to break and fall off, and the leaves were perforated. Prevention and control measures of Ginseng Botrytis cinerea: 1. Adjust the microclimate to prevent excessive humidity in the air around ginseng. 2. Strengthen the field management: select the land with good drainage to adjust the light reasonably, repair the leaky ginseng shed in time, and apply medicine in time to prevent and cure the rainy season. 3, chemical control: the best effect is 1500 times with 80% pyrimidine, or 1000 times with 50% pyrimidine. Click to get more ginseng planting technology click to get more medicinal material planting technology
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How to prevent ginseng blight?
How to prevent ginseng blight? Ginseng blight occurs at the base of seedling stem, mostly in the alternate dry and wet soil 3-5 cm underground from topsoil. Control methods: 1,"seed" disinfection: with 25% fludioxonil suspension seed coating agent 5-20 times solution mixed seeds or 50-100 times solution dipped in "seed" to kill seeds carry...
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What medicine does ginseng black spot disease use to prevent and cure?
What medicine does ginseng black spot disease use to prevent and cure? Please introduce that ginseng black spot is caused by Alternaria fungi infecting stems, leaves, flowers and fruits of ginseng. Airborne. The precipitation frequency is more, the air humidity is high, the air temperature is easy to occur under the condition of 18 ℃-22 ℃, and spread to the surrounding plants, stem spots occur more than in the middle and late May.
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