The blight of lily
Symptoms: the disease often occurs on the tender leaves of the plant, and stems and flowers can also be damaged. At the initial stage of the disease, oil-stained spots appeared on the susceptible leaves, and then gradually expanded into grayish green. When the disease was serious, the leaves and flowers were soft rot. Near the ground of the susceptible stem, the diseased part was water-stained, browned, wrinkled, the plant wilted, lodged and died. The bulb was infected when it sprouted and only the top of the young stem withered. When wet, the disease produces a white mildew layer.
The pathogen is Phytophthoracactorum (Leb.etCohn) Schrot. And parasitic Phytophthora (P.parasiticaDast.), all belong to flagellum subphylum, oomycetes, downy mildew, Phytophthora fungi.
Incidence regularity: the two kinds of Phytophthora mainly overwintered as oospores on the diseased remains in the soil. When the conditions were suitable in the next year, the oospore germinated and produced germ tube to invade the plant, and then sporangia and sporangia were produced on the plant for re-infection. Under rainy, poor drainage, low-lying and humid conditions, the disease is serious.
Prevention and treatment: ① reduces the source of infection: pull out the diseased plant and burn it centrally. ② strengthens cultivation management: the soil can be irrigated with dimethazone in a large area of production, and pots can be filled with disinfectant soil. The planting land requires good drainage, and the flat land can be cultivated as a high border. Avoid damaging the stem base when gardening. ③ chemical control: plant growth period, can be sprayed with Bordeaux liquid and other chemicals.
- Prev
Cultivation of Lily
The climatic soil prefers a mild and drier climate. Able to withstand cold and drought, avoid extreme heat and rain. The requirement of soil is not strict, it is better to choose cool, dry, sunny environment and sandy loam with high dryness and good drainage. Moist and low-lying land is not suitable for planting. Avoid continuous cropping. Soil preparation is carried out in summer, ploughing the land, applying basic fertilizer, forming a flat bed about 1.2 meters wide, and digging drainage ditches around. The method of planting and reproduction is mainly propagated by scales and bulbs. (1) scale propagation: select disease-and pest-free, robust bulbs and use bamboo
- Next
Leaf blight of lily
Lily is native to the eastern and central regions of China. More hardy, like strong light, not resistant to shade. Lack of light can affect growth and flowering. It is suitable for sandy loam with good drainage and rich organic matter. Poor disease resistance, susceptible to disease in a high-temperature and humid environment. The lily plant is upright and upright, the flower is big and colorful, and there are many varieties, which are suitable to form a piece or cluster dotted with the edge of the grass or form a flower border, which is quiet and harmonious. Lilies are also treasures of potted and cut flowers. Lily leaf blight, also known as lily gray mold, affects plant photosynthesis, hinders growth and reduces ornamental value. When the disease is serious
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