How to prevent and cure flower diseases? Prevention and Control of Common Diseases of Family Flowers

At present, flowers are the main family greening plants for urban people, and all kinds of diseases are often encountered in the process of planting. If the prevention and control is not timely, it will lead to the growth of flowers. Here are the prevention and control methods of common flower diseases. Take a look at the right medicine.

(1) Root rot

Root rot is a plant disease caused by pathogens in the soil, usually characterized by withered leaves and slow growth, and the whole plant slowly turns yellow and loses its leaves.

The root rot is due to overwatering the plant, drowning the plant and causing the root system to rot.

When root rot occurs, take the plant out of the basin in time, throw away the old soil, cut off the rotten roots, pick the diseased branches and leaves, soak the potassium permanganate solution and replace the new soil into the basin and put it in a ventilated shade.

(2) powdery mildew

Powdery mildew is a common disease, and the probability of occurrence around it will be frequent, which is infected by fungi. Generally in the Meiyu season will be more active, at the beginning of the leaves appear white spots, and then slowly covered the whole leaf, until finally turned gray, pay attention to ventilation and light is the key, powdery mildew will spread slowly.

Found to deal with in time, found that powdery mildew infection, you can timely use a small teaspoon of detergent water to clean the leaves, and then seriously cut off the diseased leaves, timely spray chlorothalonil or methyl thiophanate solution.

(3) anthrax

Anthracnose is a very unpleasant disease, which usually occurs on the leaves of plants, showing that at first there are small spots of water stains on the leaves, and then the dots spread outward, turning into circles of brown spots, gradually spreading to the whole leaf to become brown and dry. The disease spot can form perforation, and the diseased leaf is easy to fall off.

Cutting off the diseased leaves and burning them in time at the initial stage of the disease can prevent expansion; during the onset of the disease, spraying 1000 times of 75% methyl thiophanate wettable powder and 75% chlorothalonil wettable powder, or carbon tetralin wettable powder or 50% carbon Fumei wettable powder. Once every 7 to 10 days, 3 to 4 times in a row, the control effect is better.

(4) Black mold

Also known as soot disease, generally caused by honeydew secreted by aphids, when there are such diseases and insect pests, it means that insect pests will occur. This kind of disease and insect pest will lead to the weakening of leaf photosynthesis, stomatal blockage and leaf shedding.

Prevention and treatment: the effective way to prevent and cure is to wipe the leaves with diluted soapy water.

(5) White silk disease

The whole plant of white silk disease is shown at the base of the root and stem, at first it appears white silk-like hyphae, then slowly affects the leaves, and finally decays and dies. White silk disease is generally produced in the environment of high temperature, high humidity and soil stagnant water, so we should pay attention to water control while paying attention to the overall environment.

Drug prevention and treatment: in the early stage of the disease, you can use silk to dilute 1000 times or Fengqian root protection 600,800 times, or to irrigate the roots of diseased plants with 1% copper sulfate solution or to spray with water spray with wettable powder.

(6) Fusarium wilt

Fusarium wilt is common in all kinds of fruits and vegetables, such as tomatoes, peppers, peas and melons. The symptom is that the top and lower leaves of the plant wither and recover slightly at night. After a period of time, the whole plant will wither.

What is more serious is that it affects the decay of flowers and fruits, which can seriously affect the condition of blooming and fruiting, first showing small spots on the flowers and fruits, and then slowly turning into black leathery patches as the fruit grows.

These are usually caused by random watering caused damage to the roots of plants, the calcium in the soil can not be absorbed by plants, resulting in a lack of water for plant growth, and is prone to disease in hot and dry environments.

As long as the plants are properly maintained, most of them can be avoided and spoiled, and the plants can be kept healthy. Do not water the leaves directly, keep the leaves dry, and do not give plants too much water. This will help avoid infecting most of the diseases and insect pests. If diseases are found, cut off the diseased leaves and branches in time, and spray fungicides in time, such as chlorothalonil or methyl thiophanate solution.

There are six kinds of common diseases of flowers, you should pay attention to prevention in advance in the process of breeding, otherwise it will promote the occurrence of diseases, the above are detailed pest control methods, do not miss yo.

Control methods of Flower Diseases

Flowers (Flower ['flauflowers]; plural: Flowers), which are used to appreciate plants, are abnormal short branches with reproductive function, and there are many kinds of them.

A typical flower bears calyx, petals, and stamens and pistils that produce germ cells on a limited growth axis. Flowers are composed of Corolla, calyx, receptacle and stamens, with a variety of colors, some of which are very gorgeous and fragrant.

There are two kinds of flower diseases: non-communicable diseases and infectious diseases. The main factors for the occurrence of non-communicable diseases are temperature, sunlight, humidity, drought, waterlogging, severe cold, nutrient deficiency or imbalance and mechanical damage. For example, under the hot sun in summer, water-deficient plants wither or partially burn, leaves are scorched, leaves suffer frost damage in winter, acid-loving flowers are irrigated with alkaline water for a long time, resulting in iron deficiency, yellowing, whitening or even drying up leaves, toxic gas pollution in the air, and so on, this kind of disease only affects the injured plant itself and can not be re-infected. Infectious diseases caused by fungi, bacteria, viruses and so on, caused by parasitism of plants, can be cultured and spread rapidly in a suitable environment, resulting in disasters. The main diseases are: black spot, brown spot, anthrax and so on. The prevention and control of black spot can spray 1000 times of carbendazim wettable powder as early as possible. at the same time, strengthen the management of applying more phosphorus and potassium fertilizer to improve the disease resistance of the plant. To prevent and cure anthracnose, one hundred and twenty times Bordeaux liquid should be sprayed before germination. In addition, timely removal of withered leaves and residual branches, concentrated burning and reducing the source of infection are effective for the prevention and control of various diseases. In June, the temperature continued to rise, and the rainfall in China increased from south to north. After Lesser Fullness of Grain, the weather gradually turned hot, marking the beginning of summer soon. At this time, the temperature is high, the humidity is high, and the middle and lower reaches of the Yangtze River is the Meiyu season, which is the month with the largest rainfall of the year. At this time, flowers are most likely to be infected with diseases and insect pests. When plants wilt and pests eat away at their leaves, can you find the right cause?

In fact, flower diseases are mainly physiological diseases and infectious diseases. Physiological disease refers to the disease caused by adverse environment, such as water imbalance, unsuitable temperature and light conditions, lack or excess of certain nutrient elements, soil salt damage and so on. Infectious diseases are diseases caused by harmful organisms, such as fungi, bacteria, viruses, nematodes and so on. The leaves affected by the disease will appear discoloration, necrosis, decay, deformity and wilting, which seriously affect the ornamental value.

Insect pests can not be ignored in family flower conservation. There are many kinds of pests that harm flowers. Often, a kind of flower will be harmed by many kinds of pests, so that plants can not grow normally, or even die. According to incomplete statistics, there are more than 5000 species of flower pests in China, most of which are insects, followed by mites and molluscs. According to the feeding mode and harmful site, it is usually divided into four categories: piercing pests, leaf-eating pests, stem borer and underground pests.

Watching beloved flowers and plants wither day by day by diseases and pests, I believe you must be very sad in your heart. Only by finding the right cause can you prescribe the right medicine, so that flowers and plants can be protected from diseases and insect pests and grow healthily!

Common Flower Diseases in Family and their Control

Methods for the prevention and control of powdery mildew: spray 25% trimethoprim wettable powder 2000 × 3000 times, or 50% carbendazim wettable powder 500 times 600 times, or 70% methyl thiophanate wettable powder 600 times 800 times, etc. when the disease is serious, spray once every 7-10 days, continuously spray 2 times 3 times, different agents should be used alternately to avoid drug resistance of bacteria.

The wettable powder is a specific drug for the treatment of powdery mildew with a residual period of 20 to 25 days. After spraying, the powdery mildew layer of the injured part becomes dark gray, shrinks and disappears, so it is an ideal agent for the prevention and treatment of powdery mildew.

Baking soda can also be used in families, 1% baking soda solution can be used to spray damaged plants, and the prevention and treatment rate of flower powdery mildew can reach more than 80%. African jasmine anthracnose

African jasmine anthracnose, orchid leaf spot, aloe round spot, sunflower purple spot, cycad leaf spot, bamboo taro leaf blight and other leaf diseases.

1. Timely removal and destruction of diseased leaves; 2. At the initial stage of the disease, 75% chlorothalonil wettable powder 1000 times, or 50% carbendazim wettable powder 1000 times, or 70% methyl topiramate wettable powder 800 times, or 70% Dysen zinc wettable powder and some germicidal drugs to prevent diseases. Better results can be achieved by spraying leaves every 7 to 10 days for 2 to 3 times in a row.

3. Keep the plant ventilated and transparent, and remove the stagnant water in the basin soil in time. Control soil moisture, eliminate the harm of high temperature and humidity to the plant, promote the robust growth of the plant, in order to achieve a good disease prevention effect. Put it in a cool semi-overcast environment in summer and avoid exposure to the sun.

For shellfish such as cotton blowing scale harmful to Haitong, brown soft scale harmful to rubber tree, black brown shield scale harmful to cycad, Milan red wax scale and Milan white wheel shield scale, the control methods are as follows:

1. Cut off the branches with insects; 2. Root application of 3% furan granules, each basin (diameter about 20cm) can be applied 2-3 grams, after application, burying and watering.

3. During the peak incubation period of nymphs, when the waxy layer is not formed or the waxy layer is just beginning to form, the branches and leaves are sprayed with 15002000 times of EC, or 2000 times of imidacloprid soluble solution and 2500 times of pyrethroid pesticides (pesticides). Good results can be obtained when the above three agents are used alternately and sprayed every 7-10 days for 2-3 times. The key to spraying is to seize the opportunity (nymph stage). Once the scale shell is formed, the spray is difficult to be effective.

It can also be used in the family: 1. Add a small amount of washing powder to the rice soup and brush it on the branches and leaves

two。 Shell insects can be killed by scrubbing leaves and branches with cotton balls stained with vinegar.

3. Wipe the branches and leaves of the scale insect repeatedly with a higher degree of liquor.

A wide range of brown soft scale damage to rubber trees

For cotton bollworm that harms longevity flowers, the control methods are as follows:

Artificially capture larvae; spray 1.2% bitter tobacco EC 800 / 1000 times; spray household health insecticides when the harm is serious; or soak cut tobacco with high nicotine content for 24 hours and spray. Mites (also known as red spiders) can harm the leaves of many plants in summer. the control methods are as follows:

Remove the branches of diseases and insect pests and burn them centrally; when the amount of mites does not affect the plant growth, it can be washed with clean water; when the insect pests occur seriously (from June to July), biological agents such as Chongding and Shongwang, which are common in the market, have better control effects.

Do not use dichlorvos to kill mites, dichlorvos can stimulate the proliferation of mites, and do not use pyrethroid pesticides (most of the insecticides used to kill mosquitoes and flies in the family), it is ineffective for the control of mites.

In the family, chili peppers can also be boiled in water for an hour and sprayed, or one of garlic, ginger and pepper can be mashed and soaked in water for 12 hours.

Six methods of killing flowerpot insects and ants

1. When small flying insects appear in the flowerpot, three or four cotton swabs (cotton swabs) can be fully dipped in dichlorvos (not dripping), insert the end of the handle into the pot soil around the plant, cover the pot flowers with plastic bags, and the flying insects can be eliminated.

two。 Dissolve a tablespoon of washing powder in 4 liters of water and spray flowers and leaves every two weeks to completely eliminate white flies and bacteria.

3. Mix 4 cups of flour and half a cup of milk in 20 liters of water, filter with gauze and spray on the leaves to kill ticks and their eggs.

4. Pour the beer into a shallow pot under the flowerpot soil, and the snail will be drowned if it climbs in.

5. Mash a garlic and mix it with a tablespoon of pepper into half a liter of water. Spray it on the flowers and leaves an hour later to prevent the attack of rats.

6. Ants appear in flowerpots, cigarette butts and cut tobacco can be soaked in hot water for a day or two, wait for the water to turn dark brown, sprinkle part of the water on flower stems and leaves, and pour the rest into the flowerpot after dilution, which can be eliminated.