Control of rhododendron disease in Belgium
Control of common diseases and insect pests
The physiological pathological changes in the common diseases of Belgian rhododendron are mainly caused by the difference of water quality between production and marketing, the uncomfortable temperature on the way of circulation or the lack of time in the family. The main treatment method is to adjust the light, pH and temperature of irrigation water according to the physiological habits of Belgian rhododendron.
The common diseases in pathology are:
Grey mold disease
Take thinning seedlings, reducing humidity and heat preservation as the fundamental measures. For drug treatment, one of the fungicides can be sprayed, such as prohydantoin (1500 times), mancozeb (500x), Sukeling (150x), chlorothalonil (600x) and so on. Generally use 2-3 times, once every 7-10 days, it is better to use drugs in rotation.
White silk disease
White silk fungus generally harms the roots. The cultivation substrate should be strictly selected and preventive measures such as exposure to the sun or mixing medicine should be adopted before use. Drug treatment can irrigate the roots with dioxone (500 times solution) or pentachloronitrobenzene (800 times solution) during the growth period. Generally, it can be eliminated by applying twice, and the interval is about 10 days.
Stem rot
Stem rot usually occurs on the seedling bed, and the symptom is stem rot at the base of the seedling. Transplanting seedlings in time is the fundamental way to control. The effect of drug prevention and treatment is better when the root is irrigated with poison alum (600 times liquid) or DuPont Kelu (600 times liquid).
The common pests are mainly mites and red spiders. Mite repellent (1500-fold solution) or avermectin (3000-fold solution) are sprayed for drug control. It can be solved by spraying twice, once every 7-10 days.
- Prev
Black tea review
The quality priority and grade of the finished black tea were evaluated by comparing the appearance, endoplasmic sensory evaluation of the standard sample tea. Kongfu black tea: focus on beautiful and symmetrical appearance. Factors such as shape evaluation, fragmentation, color, cleanness, etc. The length of the cable is dull, thick and thin, contains millimeter, tight knot Tingxiu, there are sharp fungus, Baihao exposed, body weight is excellent, and vice versa. For the uniform ratio and lower plate tea content, it is required that the upper, middle and lower stages of tea should be properly proportioned, connected with each other, not out of gear, flat and symmetrical, and the content permeability of lower plate tea (broken tea). The color and lustre is more dry and even.
- Next
Processing Technology of "Fangping Xiangming" Tea
Fresh leaf harvest standard: a month before and after the Qingming Festival, Fuding Dabai tea is harvested from the whole bud to the first development of one bud and one leaf, requiring strong, uniform, fresh buds, no Rain Water leaves, disease and insect buds and purple buds, no scales, Tiba, old leaves and sundries. Spread out: after entering the factory, the buds should spread 1-2cm thick on a clean bump, and the time should be controlled for 6-8 hours, so as to promote the release of part of the moisture and grass gas until the fragrance escapes. Kill the green: use the 50 famous tea machine, when the temperature at the mouth of the tube reaches 12.
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