How to prevent flower rot? How to prevent organic flower black rot?

Whenever the camellia is in full bloom, there are many camellia from the bud to be put out of the yellow water-soaked patches, with the opening of the flowers, the patches gradually become larger and more increased, some fall off before they open enough, some just bloom for 1 2 days and wither, some flowers appear brown spots on the petals, so that the flowers lose their due ornamental value.

Camellia rot is a disease caused by the fungus of camellia rot infecting the petal tissue. Symptoms are brown spots on the petals, and sometimes brown spots on the stamens and sepals. The fungus first forms sclerotia at the flower stalk, and the spores mature with only small spots, which germinate in warm and humid conditions and expand rapidly as the temperature rises.

Affected flowers, starting from the center or base of the petals, first appear small yellow-brown spots or patches, then become large brown spots, and finally the whole flower withers. At this time, if you look closely at the flower stalk, there are grayish-white hairs. This is the mycelium of the fungus.

In general, symptoms of the disease are usually not visible in autumn, but only in winter and spring, with the highest incidence from December to March. Flower rot fungi can survive on shoots or in soil for more than 5 years. The disease is mainly transmitted from off-site by sclerotia in shoots or soil.

Due to the difference in the thickness of the flowers, the degree of damage is also different, and the varieties with hard and thick petals have a significantly less chance of flower rot. Yunnan camellia and camellia plum that bloom in winter are rarely sick because the temperature conditions cannot meet the requirements of sclerotia germination. However, it is the most common occurrence in red camellia varieties.

The best way to prevent camellia rot is the first germ. When introducing or purchasing seedlings, it is necessary to pay attention to whether the plant carries this disease, so the necessary quarantine is very important. If such a disease is found, all diseased flowers and branches should be cut off, including the dead branches that have fallen to the ground, and they should be burned.

Secondly, spraying flower buds with carbendazim and methyl tobuzin many times before flowering can prevent and kill flower rot fungi.

Causes and control measures of peanut root rot and stem rot.

1. Garlic. Garlic has a bactericidal effect, and black rot can be solved with garlic. The specific reason for the uproar is that there are allicin in garlic and many alkalis such as rein, as well as antibiotic substances.

These substances can kill the pathogens produced in the rotten part of the plant roots. Use garlic to choose purple skin, which has a greater effect on flowers. The specific method is to crush the garlic residue with a juicer, mix it with water, and follow 1:

500 ratio, then water the flowers or dig out the roots of the plants and spray the garlic juice.

2. Onions. Onions have an anti-aging effect and also contain a large number of substances that can kill hand germs. At the same time, as a nutritious vegetable, it also has a good effect on flowers and plants.

It can promote the growth of flowers, improve the stress resistance of plants, and improve the metabolic ability of plants. To use onions, you need to cut the onions, soak them in water and seal them to ferment, and they can be used in about 20 days. When using, it should also be mixed with water to reduce the concentration.

3. Aspirin.

Aspirin, as an antibiotic drug, can work in people as well as in plants. Aspirin is the best way to fight black rot. There is a large amount of salicylic acid in it, which can make the rhizomes of plants grow stronger and improve the immunity of flowers.

Crush the aspirin tablets and mix them in water at a ratio of 1:1000. After that, watering the flowers with the solution will do.

1. Garlic garlic has a bactericidal effect, and garlic key shirt can solve the black rot of plants. The specific reason for the loss of hail is that garlic contains allicin and many alkaline substances, as well as antibiotics. These substances kill bacteria produced by the decaying part of the plant's roots.

Use garlic to choose purple skin.

Canker flower rot full fungicide-Best product features This product is based on amino-oligosaccharides and plant nutrition conditioners as the carrier, according to the principle of canker disease and flower rot disease developed by Qiaocha Sterilization fast, fast conduction, wheel double nutrition products, one second sterilization of crops, 3 seconds of nutritional supplementation, 10 minutes of conduction in all parts of the crop, its effect is 3-5 times that of the same kind of ordinary products of Mintong eggplant, so that the crops are repeatedly sterilized, treated with bacteria, sterilized by bacteria, infected by bacteria, and the only fruit that bacteria must be killed. The sterilization rate reaches more than 98%.

1.Prevent seed mold and ensure seed quality.

2.Reasonable crop rotation, preferably with wheat, sorghum, corn and other gramineous crops;

3.Apply decaying fertilizer and strengthen field management.

4.Pesticides and book control: use leading Cuirui Aierjia seed dressing, use 10 grams of Erjia + 50 grams of Aierjia mate, mix with 300 ml of water and mix evenly to make the mother liquor.

Spread 25-30 kg of peanut seeds on the plastic film, sprinkle the prepared mother liquor on the peanut seeds in batches, stir it quickly, spread it out in a cool and ventilated place, and sow it after it is fully dried. Leading crop science is an expert in this area, and you can check out their website.

Flower rot of chrysanthemum mostly occurs in environments such as high humidity, high soil temperature, poor ventilation, and insufficient sunlight.

Prevention and control methods: Apply more phosphorus and potassium fertilizer in the middle and late stages of maintenance, control the amount of nitrogen fertilizer, and set up a ventilated and light and air drying site after flowering to control the amount of watering, but it can not cause petals to wilt. Spray 800 1000 times of doxolite sulfur mixture or 75% chlorothalonil wettable powder every 7 10 days during the bud stage, and the concentration of the drug should not be increased at this time, otherwise the petals are susceptible to pesticide damage.

Root rot occurs in the high humidity and rainy season in July and August, first in the roots of the plant begins to turn black and rot, and then the aerial parts quickly wilt and die. Prevention and control methods: avoid continuous cropping; Drain water in time to prevent water accumulation in the furrow; At the beginning of the disease, the roots can be irrigated with 70% dixone 1000 times.

Causes and control measures of peanut root rot and stem rot.

How to prevent root rot?

Root rot is a soil-borne disease of plants caused by fungal bacteria.

Symptoms: Dark-brown from stem base to root, rotting, young leaves lose vitality and wither. Prevention and control methodsAgricultural control: strengthen seedbed management, seedbed covering soil should not be too thick after sowing.

Physical control: soak seeds in warm water at 55 for 10 minutes.

Pesticide control: seedbed prevention and use root rot net root irrigation, flushing, drip irrigation, irrigation root dilution 1000-1500 times, flushing, drip irrigation dilution 300-600 times, field crops recommended spraying, drenching root use.

Whenever peppers, tomatoes, cucumbers, eggplants, etc. are planted, it is prone to soil diseases such as sowing period of stem farming, slowness, seedlings, etc., because this time it is still high, and the temperature in the shed is still very high and even reaches a high temperature of 38 degrees. This is the disadvantage of process seedlings. Because it is necessary to pour seedling water into the soil moisture, it is easily caused by rotting diseases of the soil.

It is a seedling of eggplant seedlings and has a large area due to improper management. By observing the field, this cultivation is too high, the soil moisture content is extremely high, and the temperature is too high, which leads to diseases. Dry diseases such as dry rot, not only soil moisture, high temperature, if the manure is not completely composed, then chemical fertilizers and other compounds will also have the decay of the stem.

For a safe transition during the seedling period, it is proposed that seedling maceration can be made during planting, which can significantly reduce the occurrence of soil diseases, such as stem-based spoilage.

It is best when the roots can be completely immersed in the liquid, and it can be planted 30 minutes after the roots.

For plants that are already diseased, we can use chemical liquid leaching in the early stages of the disease, and the severity requires tumor.

Recommended transition drugs: chloroform isocyanic acid + essential cream + plant essential oil auxiliary + rooting liquid fertilizer.

When decked, the liquid needs to flow down the base of the rod, i.e. the root system can be protected to the base of the rod.

Root rot is the most common, the most difficult, the most difficult, the most difficult, especially cultivated in winter and early spring. Due to the main harmful crops, the early difficulties, which are very serious, often lead to the death of a large number of plants in the field, leading to a severe reduction.

Root rot is caused by a variety of pathogenic infections, such as rot molds, queues, emulsifying enzymes. Bacteria in the soil or with pathology in the soil, it has become the main infection in the following year**, pathogens can survive in the soil, according to tests, even after the fall of strawberries, when planting seedlings, when the environmental conditions are suitable, the pathogenesis of the root of the wound or bacteria is invasive, and the reproduction of the roots is large, in the initial stage of the disease, the roots are light red irregular patches, and as the conditions develop, the spots gradually expand and the color gradually changes to dark brown. All roots are brown.

Above the upper part, the outer leaf-like leaves are yellow, brown, necrotic to curly, diseased plants are lacking, grow, and finally die yellow to death.

The occurrence of basal rot after raising flowers is generally caused by bacterial infection in the soil. In this case, it is necessary to dig it out, replace it with new soil, prune off the rotten area, spray with sterilizer, and replant.

For basal rot, octamine acetate can be used to smear the parts of the gel, irrigate the roots with oxamine or Bacillus subtilis, spray the foliar surface with thioxene copper or thiasen copper, and carry out three-pronged prevention and control, once every 5 6 days, 2 3 times in a row, to control the disease.

(1) When breeding and selecting, try to select good varieties that are free of disease and have strong disease resistance for breeding.

2) Try to choose to sow in autumn, because the summer is too hot, the rainy season has a greater impact on flowering and growth, as long as the right temperature is maintained in winter, it can still bloom normally and the probability of infection with rust is small.

3) When planting or maintaining, keep the distance between pots and pots not too close, and keep air circulation. If the leaves are too dense, prune them in time.

4) Then in the fertilization of this part, in addition to the application of base fertilizer (organic fertilizer) in the early stage, most of them are mainly phosphorus and potassium fertilizers, which enhance the flowering and fruiting and disease resistance of Lubing flowers and reduce the probability of rust.