How to control diseases and insect pests of Angelica sinensis?
How to control diseases and insect pests of Angelica sinensis? Please introduce in detail the prevention and control of diseases and insect pests of Angelica sinensis with reference to the following methods: (1) the peak period of the disease is in mid-April, mid-June, early September and early November after transplanting. Underground pests are mostly conducive to the disease. Control methods: ① is mixed well with 3911 granules 3 kg / mu plus 15kg of fine soil or 0.5kg of methyl isophosphates emulsion and 2.5kg of water sprayed on 15kg of soil, sprinkled and turned into the soil; ② is irrigated regularly with broad-spectrum long-acting insecticides, 250g of carbendazim gel suspension per mu or 600g of thiophanate per mu plus 150kg of water, 50g of irrigation diluent per plant, irrigated once in early May and mid-June. (2) Sclerotinia sclerotiorum is harmful to leaves, which is easy to occur under the condition of low temperature and high humidity, and the damage is more serious from July to August. Prevention and treatment methods: non-continuous cropping, 1000 times 50% methyl thiazine was sprayed continuously for 4 times every IO day in the first half of the month. (3) the insect pests are mainly caused by golden needle adults and small earth tigers. Control method: root out the grass inside and outside the field, pile it into a small pile, change the fresh grass for 10 days, and kill it with poison bait. Click to get more Angelica planting technology click to get more medicinal material planting technology
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How does Angelica control diseases and insect pests?
How does Angelica control diseases and insect pests? Please introduce the following methods for the prevention and control of diseases and insect pests of Angelica sinensis: root rot: soaking seedlings with Bordeaux solution of 1RV, disinfecting and killing insects in soil, burning and smoking soil in the nursery ground. Brown spot: pay attention to field hygiene, remove the diseased leaves in time, and use 1-1-1-1-1-1-1-1-1 in the middle and later stages.
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How to prevent and cure the black spot of chrysanthemum?
How to prevent and cure the black spot of chrysanthemum? Please introduce that the pathogen is Alternaria chrysanthemum. Also known as brown spot, spot blight. It is a serious disease on chrysanthemum, which occurs all over the country. Symptom characteristics susceptible leaves initially appear round or oval or irregular purple-brown spots of different sizes, and in the later stage.
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