frost blight Learn more about frost blight
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Control of frost blight of growing litchi
Litchi from young fruit to ripe fruit, fruit stalk and fruiting branchlets can be damaged by litchi downy blight, and the leaves can also occur at high humidity. Local chlorosis on the symptomatic leaves, white mildew layer on the back, fruiting body of the pathogen, but usually at the peak of the disease, the leaves have aged, so the field
2020-11-08 Species litchi frost blight disease control from childhood fruit to -
The most complete classification and formulation of plant diseases in history
Plant disease refers to the phenomenon that plants undergo a series of morphological, physiological and biochemical pathological changes under the influence of biological or abiotic factors, thus affecting human economic benefits. The symptoms of plant diseases can be divided into five types: discoloration, necrosis, decay, wilting and deformity.
2019-04-12 -
The most complete classification and formulation of plant diseases in history
Plant disease refers to the phenomenon that plants undergo a series of morphological, physiological and biochemical pathological changes under the influence of biological or abiotic factors, thus affecting human economic benefits. The symptoms of plant diseases are mainly divided into discoloration, necrosis, decay, wilting and deformity.
2020-11-09 In history the most complete plant disease classification and formula medicine -
What about the yellow leaves of orchids? what is the reason why the leaves become dry?
What about the yellow leaves of orchids? what is the reason why the leaves become dry?
2019-03-07 -
How to identify tomato late blight
Late blight: the whole growth period and leaves, stems and fruits can be damaged, especially leaves and green fruits. The disease of seedlings generally appeared dark green watery spots from the leaves, and then extended to the stem, showing dark brown rot near the petiole. with the development of the disease, the base of the young stem was waterlogged constricted and the plant wilted and collapsed. The disease in the adult stage starts from.
2018-09-11 -
How to prevent and cure the latest green onion white blight?
The white blight of scallions is a fungal disease, which overwinters mainly as chlamydospores in the soil, produces sporangia in the next spring and spreads by irrigation water or wind and rain, and the newly produced spores on the disease spot and the surface zoospores are transmitted by raindrop sputtering. seedling stage, adult stage
2020-11-10 The latest green onions white blight how control -
Why the leaves of Orchidaceae plants turn yellow
Orchidaceae plants because of its high ornamental value, white and elegant flowers, elegant green branches, put indoors can increase more vitality for the home, but also beautify the environment. The leaves of orchids turn yellow. in order to solve this problem, we need to find out the cause of the yellowing of orchids, not blindly.
2018-07-16 -
Scientific application skills of pesticides
Scientific application skills of pesticides
2018-08-09 -
Planting experts to share drug use skills!
Planting experts to share drug use skills!
2018-06-27 -
How to identify Tomato late Blight and Botrytis cinerea
Late blight and Botrytis cinerea are important diseases that seriously affect the yield and output value of tomato in spring cropping facilities in North China. Early detection and accurate identification is the premise of effective prevention and control. The field symptoms often vary with different varieties and environmental conditions, and they are easy to be confused with each other or with other diseases, which puzzles growers.
2018-09-11 -
Management measures of wheat field in spring during the critical period of wheat growth
Management measures of wheat field in spring during the critical period of wheat growth
2018-07-14 -
Problems and Countermeasures in Potato Production
Zhaosu is located in the northwest border, 1720~1860 meters above sea level, frost-free period is short, belongs to the cold mountain climate, with the adjustment of industrial structure, potato has become the main crop of our group. 1. Existing problems 1. Climate impact In April to early May 2007, due to high temperature and dry soil, potato emergence was difficult, seed potato dried up, and more rain after emergence, resulting in rotten seeds and lack of seedlings. 2. Poor seed potato quality In 2007, seed potatoes were rotten, diseased and injured, and seeds were not strictly picked when cutting.
2019-01-16 -
Leek winter cover ensures smooth overwintering key points of leek management in winter arch shed
Leek winter cover ensures smooth overwintering key points of leek management in winter arch shed
2018-07-11 -
Summer is the high incidence period of walnut branch blight How to prevent walnut branch blight
Summer is the high incidence period of walnut branch blight How to prevent walnut branch blight
2018-07-14 -
Measures for potato disaster reduction after freezing and snow disaster
(1) Function and use 1. The effect of low temperature on potato seed tuber during storage and seed tuber and young bud (seedling) after sowing. 2. Reduce the damage degree of ice and snow disaster; promote potato recovery growth. (2) Technical measures 1. Preventive measures for freezing injury (1) During seed potato storage, pay attention to heat preservation. Before the low temperature comes, take preventive measures, such as putting straw mat under the seed pile and covering the seed pile surface with straw mat to prevent freezing damage. (2) Reasonable adjustment of sowing date to prevent freezing injury. needle
2019-01-16 -
Winter-grown potatoes
First, sow seeds at the right time to seek advantages and avoid disadvantages. The sowing date of winter potato is based on the best sowing time when the soil temperature reaches 7 or 8 ℃ at the depth of 10 cm. In an area not affected by frost. Sow as early as possible. It can be harvested before the high temperature in summer. Get a higher yield. The late blight was serious in the later stage of late sowing. Poor storability. Second, select improved varieties and promote buds and seedlings. Potatoes are sown in different places to facilitate disease resistance and high yield. Zihua Baikexin 3 and Kexin 1 were selected to have high yield. Budding must be carried out before sowing.
2019-01-16 -
Prevention and control of spring onion blight in autumn
Prevention and control of spring onion blight in autumn
2018-10-27 -
Celery planting technology
Celery planting technology
2018-07-05 -
Common Diseases and Drug use of Pepper
Blight: control with ethyl phosphine and manganese-zinc wettable powder. Virus disease: prevention and treatment with Zhiyanling emulsion and poison clear water agent. Root rot: control with sulfur suspension emulsion, methyl carbendazim, carbendazim wettable powder and Shuangxiaoling water agent. Botrytis cinerea: dampness with Pythium
2020-11-08 Pepper common disease and medication abstract blight B phosphine -
Tomato planting techniques: why does autumn tomato late blight occur?
Why does autumn tomato late blight occur? Please introduce the causes and control methods of autumn tomato late blight, which is a disease of low temperature and high humidity. The air relative humidity is more than 80%. The optimum humidity for the development of the pathogen is 20-22 ℃ in the daytime and more than 10 ℃ at night. Low temperature, overcast and rain, high humidity, more in the morning and night.
2018-09-08