Pest control method for grass safflower

The author learned in the Chinese herbal medicine wholesale market in Chengdu Hehuachi that the previous safflower was 50-53 yuan per kilogram, and now it has risen to 55-58 yuan. In recent years, the area planted with safflower has been expanding and the output has been increasing. Despite the large output, the market demand is also very large, so the safflower is not only sold smoothly, but also the price is good.
Correspondingly, there will be many farmers who plant safflower. Safflower (also known as safflower) is an annual or perennial plant of the Compositae family, mainly producing Henan, Shandong, Sichuan, Xinjiang and other places. The place where the planting scale is large in our province is Jianyang City. The safflower is used for medicinal purposes, and has the functions of promoting blood circulation, relieving phlegm, reducing swelling and relieving pain, and is also a natural pigment and dye which is widely used today. The seed oil yield of the safflower medicinal materials is more than 30%, and the processed safflower seed oil is an important industrial raw material.
The autumn safflower has fewer pests and diseases , mainly including blight and sclerotinia.
Fusarium Wilt is mainly caused by seedling stage. Although the bud stage and flowering stage occur from time to time, it is not serious. The damaged plants were withered, and the roots became thinner and atrophied after being pulled up, which was brown. Some of the roots were exfoliated and had white mycelium on them. Prevention and treatment: Due to the long-term survival of the pathogen in the soil, the disease site should be carried out for 3 to 4 years, and the disease-resistant varieties should be selected. Phosphate fertilizer, potassium fertilizer, 50% carbendazim WP 500 times, 58% The strontium manganese zinc 500 times solution and the 64% antivirus cockroach 300 times liquid can be rooted, which can have certain control effects.
Leaf spot disease is mostly developed from the lower part of the plant to the upper part of the plant. The old leaves are more susceptible to disease. The symptoms of the disease are the withering of the leaves, which usually have little effect on the yield.
Viral diseases vary greatly depending on the cause, annual climate and planting area, and have different effects on yield. Currently known viruses are tobacco mosaic virus, alfalfa mosaic virus and poisonous cucumber mosaic virus. Symptoms are leaves of leaves, twisted plants, early maturity (false mature).
The pests of safflower are mainly caused by borer and aphids.
The borer is extremely harmful to the inflorescence. Once the insects are drilled into the inflorescence, the flowers die, which seriously affects the yield. Control method: Apply methamidophos leaf spray 2-3 times during the bud stage to kill the heartworm.
Aphid mites are important pests on safflower. Adults or nymphs suck juice at the top leaves, stem tips, and buds of the plant. When severe, they are covered with stems and leaves. After the leaves are damaged, the edges are rolled, shrunk, and grown. Stagnant. Control method: It should be concentrated in the occurrence of mites, which can effectively control the hazard; if the mites are heavier, 50% anti-aphid WP 500 times or 40% omethoate emulsifiable water 200-300 times The liquid is controlled; it can also be controlled by malathion and pyrethroid pesticides.

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