Control of spot disease of Dendrobium
Symptoms: lobar disease. Primary brown spots, small spots enlarged, central necrotic, grayish brown, 5-10 mm in diameter. There are small black spots on the surface of the old disease spot. The injured leaves turn yellow and fall, but there are differences among varieties. Nobile tends to have heavier fallen leaves, and its growth and development is significantly poor. SelenophomadendrobiiAbiko, the pathogen of Dendrobium. It belongs to straight bacteria and half-known fungi. The conidia are colorless, unicellular, crescent-shaped, with a size of 5 μ m, 8 μ m and 1 μ m. The hyphae are brown and septate. The growth and development temperature is 5: 30 ℃, and the suitable temperature for growth and development is about 25 ℃.
Route of transmission: the conidia are mainly transmitted through the air. There are more children from autumn to spring, and the disease usually occurs in the middle and lower leaves.
Prevention and control methods: 1. Pick the diseased leaves in time and deal with them. 2. Spray 75% chlorothalonil wettable powder at the initial stage of the disease, or 50% propofol wettable powder 1500 times, 40% carbendazim wettable powder 400x, or 70% ethyl phosphine manganese zinc wettable powder 500x, or 50% thiophanate methyl wettable powder 500x, once every 10 days, spray 2 times continuously for 3 times.
- Prev
Family Culture skills of Dendrobium
Dendrobium, along with Cartland, Phalaenopsis and Wandai Orchid, is one of the largest genera in Orchidaceae. There are 1500 to 1600 native species, of which about 60 species are native to China. According to its biological characteristics and ecological requirements, Dendrobium can be divided into two categories: deciduous Dendrobium and evergreen Dendrobium. The deciduous Dendrobium extracted inflorescence from the upper part of the pseudobulb every year, sprouted from the base after flowering, and grew into a new pseudobulb, and the leaves fell off at the end of the growing period or in the following spring. Evergreen Dendrobium
- Next
Dried plum which is ornamental, medicinal and easy to grow
Dried plum is native to Siberia and Mongolian plateau, and has many names showing its own characteristics, such as dichromatic Buxue grass, falling fly flower, fly rack, salt cloud grass, fly grass and so on. Dried plum is similar to plum blossom, never fade, never wither, fresh flowers are as unique and beautiful as dried flowers, and are known as "unwithered flowers". Dried plum blossoms in four seasons, the initial flowers are purple or pink, and become white with maturity, so it is called dichromatic Buxue grass. This flower is a valuable Chinese herbal medicine, with root whole herb into medicine, can activate blood, stop bleeding and warm in the middle
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