Cauliflower mildew is very common, how to prevent cauliflower mildew?

Broccoli is also a delicacy on our table, what precautions do we need to take to grow broccoli? In order to effectively prevent the invasion of pests and diseases! Broccoli, also known as cauliflower, is a common green vegetable that belongs to the cabbage series.

Broccoli has high nutritional content and is known as the "vegetable crown", and is planted in rural areas in the north and south of China. Before planting, it is recommended to spray seedling refining and rooting powder of Hansheng Company to prevent root rot, black shin disease, and blight that are prone to occur after planting.

Symptoms of cinerine mold in vegetables. The disease is mostly from the leaves close to the surface, the initial disease part is water-soaked, and the disease part expands rapidly when the humidity is high, and it is brown or light reddish-brown, causing rot, and the disease part has gray mold. The base of the stem is diseased, the diseased part becomes brown and rotten, and the control method is to select soil for 2 to 3 years of rotation.

Choose new seedbeds or field seedlings without pathogenic bacteria to cultivate disease-free and strong seedlings. In the morning of cultivated in the protected area, the humidity should be reduced by wind, then the shed should be closed to increase the temperature, and the humidity should be reduced to below 75% in the afternoon.

In the process of planting vegetables, it is very normal to encounter a variety of diseases, especially nightshade crops are very easy to get gray mold, this disease also makes people very headache, high temperature and low humidity are very easy to attack, vegetables are indispensable for human survival, we mainly eat cabbage, tomatoes, eggplants, peppers, cucumbers, etc., now in order to meet the needs of the market, vegetable types are very diverse, such as new fast vegetables, chrysanthemums, etc., some I can't name.

The recurrence of vegetable gray mold may be due to excessive sitting, which causes a large number of pathogens to accumulate in the soil, and a large number of diseases occur when the pathogens develop in the environment. To prevent this from happening, we need to adopt a variety of means. Agricultural control:

In crop rotation, many vegetables will develop gray mold, such as tomatoes, peas, peppers, cucumbers, etc. Vegetables, leaves, fruits, stems, and flowers will be damaged, and in severe cases, the entire vegetable plant will dry up, causing heavy losses.

In such a situation, pesticides should be sprayed in time, and the right medicine should be prescribed, and fertilizer should be supplemented in time, water and fertilizer management should be strengthened, and some sterilization drugs should also be sprayed, and insect pests should also be removed in time to ensure sufficient light.

First of all, it is necessary to clean up the weeds in time, and we must decompose and remove the disease residues in time, and we must adopt the method of water and drought rotation, and then we must choose some better varieties, and we must spray insecticides in time.

In autumn and early spring, the sick and debris should be completely removed, and buried or burned in a concentrated manner to reduce the source of bacteria.

Reasonable dense planting, timely drainage after rain, pay attention to reduce the humidity of the field, keep it away from the disease conditions.

It mainly occurs on cauliflower. In the early stage of the disease, there are water-soaked small spots on the tips and margins of the inner bulbous leaves in sensitive leaves, and then they become scorched and browned, and the leaf margins are similar to "burns". If there is soft rot bacteria, it will quickly rot wet, or even "rot away"; If no other bacteria continue to infiltrate, it is dry membranous (dry heartburn).

At first, there will be some pale green lesions on the foliage, and then these lesions will gradually expand to yellow or brown. If it is severe, there will be a lot of lesions on the back of the leaves, which will eventually cause the leaves to dry up.

The initial pale yellow-green lesions with inconspicuous edges on the leaves, then turn yellow to yellow-brown, often limited by the leaf veins into polygonal shapes, and in severe cases, the lesions are continuous, and the diseased leaves die. On the back of the diseased leaves, there is dense white frosty mold.

There will be a lot of patches on the leaves, and most of these patches are white, and there are also some molds that appear, and there will also be deformities on the plants.

The aboveground part of amaranth is short, the growth is weak, and the leaf color becomes lighter. At noon on a sunny day or in a drought, the plants show wilting symptoms. Peeling back the soil, it can be seen that nodules of various sizes have been formed on the roots.

Pinch the tender stems and leaves of the colored amaranth home, soak the water with boiling water, then scoop it up, drain the water, wait until the oil pan is hot, put the garlic paste down and fry it until fragrant, and then pour in the dried amaranth, add the support, stir-fry a few times and get out of the pot, it tastes particularly delicate and delicious.

Leaf spot disease should also be mainly prevented, field management should be strengthened, ventilation should be done well, and the number of pathogens in the field should be reduced. When the disease is found, the diseased strain is removed, and then streptomycin sulfate and copper hydroxide wettable powder and other agents are used for prevention and control to avoid excessive dosage and cause drug damage. Stem base rot disease mainly affects the stem base of amaranth.

The appearance of the diseased plant is shriveled after dehydration, and when the base of the stem is examined, it can be seen that it has turned brown and died, and the root cortex has rotted and fallen off, and no new roots have grown.

Aphids belong to the order homoptera, nymphs, adults can stab and suck mouthparts to harm vegetables, can also transmit a variety of viruses, its population is mainly to female adult parthenogenesis reproductive offspring, often in a short period of time can be a large number of proliferation, amaranth cataplexy generally occurs before and after sowing to the emergence of seedlings, before the emergence of the disease will cause rot seeds, resulting in the inability to germinate. After emergence, the disease will appear brown water-stained lesions at the base of the seedling stem, forming a line. It causes the seedlings to fall suddenly, and white mycelium will appear when the humidity in the field is high.

Peeling back the soil, it can be seen that nodules of various sizes have been formed on the roots. Prevention and control methods: In areas or fields with serious diseases, the diseased residues should be removed in time after harvesting, and burned or buried deeply.

It can also be rotated with lily vegetables, or water and drought rotation can be practiced. The pest is mainly white rust, the diseased leaves are yellowish, rolling, the prevention and control of this disease can be used 30ml of plant ash liquid, 50kg of water, 35ml of mancozeb, continuous spraying 2 3 times, can achieve a certain effect.

Amaranth leaf spotting mold is mainly caused by pests, you can apply some pesticides to amaranth leaves, and then water more, remember to weed the vegetables. The trick of planting amaranth is to water the vegetables more, visit her often, and deal with it in time if the weather is bad.

In the daily field management, ventilation should be strengthened to reduce the number of pathogens in the field. If it is found that there is a disease, pull out the diseased strain, and immediately use streptomycin sulfate and copper hydroxide wettable powder and other agents for prevention and control, but the dosage must be careful to avoid excessive damage to the leaves.

Use chemicals such as thiophanate-methyl, mixed sulfur suspensions and polysulfide suspensions.

Amaranth, also known as amaranth, amaranth, wild goose red, etc., is a very common vegetable. It is cultivated in most parts of our country. Because of the nutritional and health care effects of amaranth in amino acids, fatty acids, trace elements, etc., as well as its inhibitory effect on cancer cells, amaranth is also considered to be a rare high-quality food and functional food resource for human beings.

Therefore, amaranth is widely cultivated as a natural green vegetable. Moreover, amaranth is also rich in potassium, sodium and other elements, which is also very helpful to our body. So we can usually eat more of this kind of vegetables, but amaranth is often harmed by mildew, resulting in the entire garden amaranth being infected, so growers need to observe the growth of amaranth in time, and the scope of virus prevention and control is too large, resulting in poor income for growers and reduced yield of amaranth.

So how to prevent and control amaranth leaf spotted mold.

1. Choose varieties of high-quality virus-resistant seeds.

Choosing a variety of high-quality virus-resistant seeds is a very important thing and the most critical step, because it is related to the yield of amaranth. Therefore, we should select excellent varieties, and then dry the seeds for one to two hours to kill the germs, improve the disease resistance of the seeds, and improve the germination rate of the seeds.

Second, do a good job in field management.

After the amaranth is harvested, remove the diseased residues left in the field in time, and take them out of the field to burn or bury them deeply; By turning the soil deeply, the amaranth residues left in the field will accelerate the decay and decomposition. In addition, in the process of land preparation, the drainage ditch should be done in advance, so that the ditch can be cleaned and drained in time in the rainy season, so as to reduce the humidity in the field and reduce the occurrence of diseases.

3. Reasonable watering and fertilization.

We need to water the amaranth frequently to keep it hydrated. Therefore, when watering, we must avoid flood irrigation with large water, and you can "water frequently" with small water, and take the moistness of the ground as the degree. After the rain, the ditch should be cleared in time to reduce the humidity in the field as soon as possible.

Nitrogen fertilizer can not be applied partially, so as not to cause plant growth, in the fertilization, should be applied more phosphorus and potassium fertilizer in an appropriate amount to promote the plant robustness, enhance its disease resistance.

Pesticides. Because after my amaranth was sprayed with pesticides, the leaf spotted mold disappeared, so pesticides should be used to prevent and control it.

It is important to ventilate these vegetables and pull out the problematic plants as soon as they occur, so as to prevent infecting other plants.

First of all, when planting, you must choose land with relatively fertile and wide soil, and in the process of fertilization, you must use farmhouse fertilizer, not fertilizer bought outside. It is also necessary to water more often, to prevent the occurrence of pests and diseases, and if there are small insects, then be sure to spray insecticides in time.

The leaf surface is greenish and yellow, and the back of the leaf is grayish-white mold when the humidity is high. It is downy mildew: high humidity is the main condition for the onset of disease, temperature control, humidity control, proper ventilation and humidity reduction of greenhouses can effectively reduce and alleviate the occurrence of downy mildew.

Downy mildew should be prevented with medication before the onset of the disease, or at the beginning of the disease.

Control agents: downy mildew carb hydrochloride, cyanide in the frost urea. Manganese, zinc, enoylmorpholine, fluopyramide.

Downy mildewcarb, methafen, manganese-zinc. Flumorpholine, Kate (enoyl. pyrazole ester) or Dejin (20% enoyl.

27% zolmychlor) and other prevention and control. With potassium dihydrogen phosphate spray. Once every 7 days, 2 3 times in a row.

Mosaic disease is mostly a viral disease, in which the diseased plants almost stop growing, and the disease is rapidly transmitted by a few plants. Spraying three or five times with a 30% suspension agent willow with a biological pesticide will be cured.

Hello, I have seen your question and am sorting out the answer, please wait a moment 1. Cauliflower was infected with soft rot in the late growth stage of flower bulbs, and after being infected with soft rot, the old leaves showed a yellowish and wilting state, and the leaves also showed dehydration wilting, and the stems were accompanied by light brown lesions. This disease can also be recovered through ** in the early stage of infection, and if it continues to live like this, the disease will not recover.

When cauliflower is infected with soft rot, it will start to rot from the lesions on the stem, and finally spread upwards to corrode the entire flower bulb, accompanied by a foul odor.

2. Black rot. This fungus mainly harms the leaves of cauliflower, after the pillar is infected, the edge of the leaf will appear lesions, the lesions will spread inward with the growth of the fungus, and then the root pulp will begin to turn black, and finally gradually wither. Black rot is one of the main hazards of cauliflower, which generally occurs in low-lying terrain, waterlogged, or acidic soil growth environment, coupled with excessive nitrogen fertilizer application, poor ventilation and light transmittance, high air humidity and other reasons, which may cause black rot.

The main pests and diseases of cauliflower are: the main pests and diseases in the adult stage are: virus disease, soft rot, black rot, cabbage worm, aphid, etc.

It is necessary to advocate prevention and reduce treatment. Precautionary measures: The precautionary measures are:

1-2 days before transplanting, spray once in the seedbed: Shantui 007 + agricultural streptomycin + Jingbo Baoer; Spray once every 7-10 days of planting: frost plague red powder + good prescription + Karnov (or night pearl) insecticide; After spraying insecticides every 7-10 days, be sure to choose high-quality, long-lasting, low-toxicity insecticides, such as:

Chambroad Paul, Karnof, Night Pearl, Eradication, etc.; Starting from the rosette stage, spray the medicine every 5-7 days, frost plague red powder + good prescription (or Shi Dakang) to prevent soft rot, black rot, black spot, etc., spray 2-3 times in a row. At the same time as spraying, add plant umbrella or Shuofeng 481 to balance plant growth. Integrated prevention and control:

The control of cauliflower pests and diseases should be carried out"Prevention first, comprehensive prevention and control"The plant protection policy is adhered to"Agricultural control, physical control, and biological control are the mainstay, supplemented by chemical control"The principle of harmless control.

Hello, I am helping you to inquire about the relevant information and will reply to you immediately. ☺️

The main pests and diseases of cauliflower at the stage of plant growth are: black rot, cabbage worms, aphids, etc.; Cauliflower is rich in vitamins B and C. These ingredients belong to water-soluble, easy to be decomposed by heat and lost, the original Mediterranean coast, is a kind of crude fiber content is less, the quality is fresh and tender, the nutrition is rich, the flavor is delicious, people like to eat vegetables.

This picture shows the damage of cauliflower downy mildew and the prevention and control method of cauliflower downy mildew.

First of all, in the prevention and control of cauliflower downy mildew, comprehensive control measures should be taken to do a good job in cultivation, disease control and timely spraying.

1. Collect and retain seeds from disease-free plants; Clean up and destroy disease residues in the field to reduce the source of primary infection.

2. The vegetable field is deeply turned into the soil, the high-quality organic bottom fertilizer is increased, the furrow surface is leveled to make the irrigation and drainage smooth, and the timely cultivation and weeding are conducive to the ventilation and humidity reduction of the field.

Secondly. Choose disease-resistant varieties Choose disease-resistant varieties according to local conditions, such as Wenzhou Qingjiang 60 days, 80 days, Ruixue No. 1 and No. 3, Japanese Snow Mountain, Swiss Snow Globe, etc.

Seed treatment: Seeds should be sterilized before sowing, and seed dressing can be done with 25% Ruixin mildew WP, 40% ethylphosphine aluminum WP or 75% chlorothalonil WP by weight.

Reasonable crop rotation, 2 to 3 years rotation with non-cruciferous vegetables in seriously ill areas.

Advocate deep ditches and high furrows, appropriate density, timely cleaning of ditches, application of sufficient organic fertilizer, appropriate application of phosphorus and potassium fertilizer, and improve plant disease resistance.

Pharmaceutical prevention and control: in the early stage of the disease, prevention and treatment should be carried out once every 7 10 days, 3 or 4 times in a row; In the year of moderate to moderate severe occurrence, the prevention and control is 1 time every 5 7 days, 4 6 times in a row, and you can choose 600 times of 80% Dasheng M-45 wettable powder, or 500 700 times of 70% Antaisheng wettable powder, or 2 000 2 500 times of 50% Anker wettable powder, or 1 000 times of 72% Kelu wettable powder, or 600 800 times of 68% Jinlei water dispersible granules, or 2 500 times of fast purification water dispersible granules, or 600 800 times of Pulik water solution. or 600 800 times of 70% Pinrun dry suspension, or 600 800 times of downy mildew carb water agent, or 600 800 times of 25% methamphein wettable powder, or 600 800 times of 65% zeb zinc wettable powder, or 40% ethylphosphine aluminum wettable powder 400 times of liquid and other spray control. Attention should be paid to the reasonable alternating use during the prevention and control, and the last spraying to harvest shall be carried out in strict accordance with the relevant national pesticide safety interval regulations.