Licorice brown spot of medicinal plant
The scientific name of licorice is GlycyrrhizauralensisFisch. Alias beautiful grass, dense grass, belongs to leguminous perennial herbs. It is used in medicine with root and rhizome. It has the effect of harmonizing the emergency, moistening the lungs and detoxifying, and reconciling all kinds of medicines. Produced in Inner Mongolia, Gansu, Shanxi, Shaanxi, Liaoning, Jilin, Heilongjiang, Hebei and other provinces.
The main symptoms are damage to leaves. The disease spot on the leaf is round or irregular, the size is l-3mm, the center is grayish brown, the edge is brown, and there are gray-black mildew on both sides, that is, pathogen conidiophores and conidia.
The pathogen CercosporaastragalisWoronichinFisch is called Cercospora astragali, which belongs to semi-known subphylum fungi. The fruiting body is born on both sides of the leaf, and the leaf surface is mostly. The constellation consists of a small number of brown cells. Conidiophores 6 Mel 12 fascicles, light brown, unbranched, with 0-5 geniculate nodes, apex subtruncate, spore scar obvious, with septum l-7, size 24 Mel 71 × 4Mue 5.5 (μ m); conidia flagellate, colorless, with 10 septum, 3280 × 3MAE 4.5 (μ m). The strain also harms Astragalus membranaceus and Ziyun pod.
The route of transmission and the condition of the disease overwintered by mycelium on the remnant. When the conditions are suitable in the next spring, conidia are produced and the initial infection is carried out by means of wind and rain transmission. After that, the disease department produced spores for re-infection. Inner Mongolia, Liaoning, Heilongjiang and other provinces occurred from July to August, with more autumn rain and serious dew.
Prevention and control methods (1) clear the garden in autumn, deal with the disease and residue in time, and reduce the source of primary infection. (2) spraying 70% mancozeb wettable powder 500 times at the initial stage of the disease.
- Prev
Artificial cultivation of Glycyrrhiza uralensis
Licorice, also known as sweet root, dense grass, there are 23 varieties in the world. China is the country with the largest distribution of licorice, with 12 varieties. Ural Glycyrrhiza uralensis (Glycyrrhiza uralensis) is the most widely distributed, the highest yield and the best quality of the six species of licorice listed in the Pharmacopoeia of China, and has enjoyed a high reputation in the international market for a long time. Licorice is a perennial herb, Leguminosae, whose roots and rhizomes are used to reconcile the effects of various medicines and antidotes in traditional Chinese medicine. In China, there are "ten square nine herbs" and "there is no grass without a square", so it is called the king of Chinese herbal medicine. Licorice
- Next
Root rot of licorice, a medicinal plant
The main symptoms were the rhizome and the root. After the injury, the aboveground stem and leaf gradually yellowed and withered, and the rhizome became yellow-brown to black-brown sunken and festered. Pathogen Fusariumsp. It is called a kind of Fusarium, which belongs to the subphylum Fusarium. The morphological characteristics, transmission routes, disease conditions and control methods of the pathogen can be seen in Astragalus root rot.
Related
- Fuxing push coffee new agricultural production and marketing class: lack of small-scale processing plants
- Jujube rice field leisure farm deep ploughing Yilan for five years to create a space for organic food and play
- Nongyu Farm-A trial of organic papaya for brave women with advanced technology
- Four points for attention in the prevention and control of diseases and insect pests of edible fungi
- How to add nutrient solution to Edible Fungi
- Is there any good way to control edible fungus mites?
- Open Inoculation Technology of Edible Fungi
- Is there any clever way to use fertilizer for edible fungus in winter?
- What agents are used to kill the pathogens of edible fungi in the mushroom shed?
- Rapid drying of Edible Fungi