Prevention methods of Flower Diseases in Summer

Many friends do not know that in fact, flower diseases and pests are two completely different concepts, although we have always collectively referred to as pests, but in the treatment of time is a very big difference. The hot summer is coming soon, and Xiaobian will introduce you to the disease prevention methods for summer flowers.

Chinese rose

With the rise of temperature and the increase of rainfall, the infection of pathogens that easily cause plant diseases follows. In terms of disease prevention and control: we must give priority to prevention, supplemented by treatment. It is easy to produce diseases under the conditions of high temperature, high humidity, no ventilation and infection source. Therefore, plants and flowers, whether planted or potted, should first consider its ventilation, ventilation conditions, and then according to the flower plant's own disease resistance ability, there are selective remedies for various diseases. In the use of pesticides for disease prevention and treatment, we must adopt a scientific attitude, strictly match, and prevent first. That is to say, under high temperature and humidity climate conditions, even if there is no disease, it is necessary to regularly spray antibacterial and curative drugs.

In addition, for roses, azaleas, orchids and other flowers prone to brown spot disease, anthracnose, not only to prevent the first, but also regularly to methyl thiophane or chlorothalonil and water in accordance with the ratio of about 1:400 diluted after spraying plant leaves. Especially when the temperature reaches 25℃-35℃, or when the air humidity is relatively high in the rainy season, it must be sprayed once every 7-10 days.

After the rainstorm, although the plants outside have been sprayed with anti-bacterial and curative medicine, they must be sprayed again after being washed by rain. Once the plant disease occurs, it is necessary to cut off the diseased leaves and branches in time to prevent cross infection. Otherwise, the occurrence of diseases will not only lead to poor growth of plants, but even death.

Summer flower disease and prevention June, the temperature continues to rise, China's rainfall from south to north increased, after the small full, the weather gradually turned hot, marking the rapid entry into summer. At this time, the temperature is high and the humidity is high. The middle and lower reaches of the Yangtze River are the rainy season, which is the month with the largest rainfall in the whole year.

Flower diseases are mainly physiological and infectious. Physiological diseases are diseases caused by bad environment, such as water imbalance, inappropriate temperature and light conditions, lack or excess of certain nutrients, soil salt damage, etc. Infectious diseases are diseases caused by pests, such as fungi, bacteria, viruses, nematodes, etc. The leaves affected by the disease will appear discoloration, necrosis, rot, deformity and wilting phenomenon, seriously affecting the ornamental value. Pests can not be ignored in the maintenance of family flowers. There are many kinds of pests that harm flowers. Often, one kind of flower will be harmed by many kinds of pests, which makes the plants unable to 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 feeding mode and damage position, they are usually divided into four categories: piercing pests, leaf-eating pests, trunk borers and underground pests. Common Diseases of Flowers in Families and Their Control Powdery mildew control method: spray 25% triadimefon wettable powder 2000~3000 times solution, or 50% carbendazim wettable powder 500~600 times solution, or 70% thiophanate-methyl wettable powder 600~800 times solution, etc., spray once every 7~10 days when the disease is serious, spray 2~3 times continuously, different pesticides should be used alternately to avoid resistance of bacteria. Triadimefon WP is a specific pesticide to control powdery mildew. The residual period can reach 20~25 days. After spraying, the white powder layer of the injured part becomes dark gray, shrinks and disappears. It is an ideal pesticide to control powdery mildew. Baking soda spray can also be used in families. 1% baking soda solution can be used to spray the affected plants. The control rate of powdery mildew of flowers can reach more than 80%. Common Diseases of Flowers in Summer and Their Control June, the temperature continues to rise, our country from south to north rainfall increased, after the small full, the weather gradually turned hot, marking the rapid entry into summer. At this time, the temperature is high and the humidity is high. The middle and lower reaches of the Yangtze River are the rainy season, which is the month with the largest rainfall in the whole year. Flowers at this time are most susceptible to diseases and insect pests. When plants are sick and wilted and pests eat leaves, can you find out the cause?

In fact, flower diseases are mainly physiological diseases and infectious diseases. Physiological diseases are diseases caused by bad environment, such as water imbalance, inappropriate temperature and light conditions, lack or excess of certain nutrients, soil salt damage, etc. Infectious diseases are diseases caused by pests, such as fungi, bacteria, viruses, nematodes, etc. The leaves affected by the disease will appear discoloration, necrosis, rot, deformity and wilting phenomenon, seriously affecting the ornamental value.

Pests can not be ignored in the maintenance of family flowers. There are many kinds of pests that harm flowers. Often, one kind of flower will be harmed by many kinds of pests, which makes the plants unable to 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 feeding mode and damage position, they are usually divided into four categories: piercing pests, leaf-eating pests, trunk borers and underground pests.

Looking at the beloved flowers and plants by pests and diseases and wither day by day, I believe you must be very sad in your heart, find the right cause to be able to prescribe the right medicine, so that flowers and plants from pests and diseases trouble, healthy growth!

Common Diseases of Flowers in Families and Their Control

Powdery mildew control method: spray 25% triadimefon wettable powder 2000~3000 times solution, or 50% carbendazim wettable powder 500~600 times solution, or 70% thiophanate-methyl wettable powder 600~800 times solution, etc., spray once every 7~10 days when the disease is serious, spray 2~3 times continuously, different pesticides should be used alternately to avoid resistance of bacteria.

Triadimefon WP is a specific pesticide to control powdery mildew. The residual period can reach 20~25 days. After spraying, the white powder layer of the injured part becomes dark gray, shrinks and disappears. It is an ideal pesticide to control powdery mildew.

Baking soda spray can also be used in families. 1% baking soda solution can be used to spray the affected plants. The control rate of powdery mildew of flowers can reach more than 80%. Anthracnose of African jasmine

African jasmine anthracnose, tiger-tail orchid leaf spot, aloe round spot, black sunflower purple spot, cycad leaf spot, arrowroot leaf blight and other leaf diseases, the control method includes:

1. Remove and destroy the diseased leaves in time;2. At the early stage of disease, spray 75% chlorothalonil WP 800 times solution, or 50% carbendazim WP 1000 times solution, or 70% thiophanate-methyl WP 800 times solution, or 70% zebrazine WP 800 times solution and some bactericidal drugs to prevent diseases. Spraying leaves once every 7~10 days for 2 to 3 times in succession can achieve better results.

3. Keep the plants ventilated and transparent, and remove the accumulated water in the pot soil in time. Control soil moisture, eliminate the harm of high temperature and high humidity to plants, promote healthy growth of plants, in order to achieve good disease prevention effect. In summer, put it in a cool semi-shady environment and avoid exposure.

For the scale insects such as blowing cotton scale which damages Pittosporum rubra, eating brown soft scale which damages rubber tree, black brown round scale which damages cycad, red wax scale which damages Milan and white round scale which damages Milan, the control methods include:

1. Cut off the branches with insects;2. Apply 3% furadan particles to the roots, 2-3 grams per pot (about 20cm in diameter), bury and water after application.

3. At the peak of nymph hatching, when wax layer is not formed or just formed, spray 40% Soxil EC 1500~2000 times solution, or 6% imidacloprid soluble solution 2000 times solution, pyrethroid pesticide (insecticide) 2500 times solution to branches and leaves. The above three kinds of chemicals are used alternately, spraying once every 7~10 days, spraying continuously for 2~3 times, and good results can be obtained. The key to spraying is to seize the opportunity (nymph stage), once the scale shell is formed, spraying is difficult to effect.

The family can also be used: 1. Rice soup plus a small amount of washing powder, brush in the branches and leaves;

2. Scrub leaves and branches with cotton balls stained with vinegar to kill scale insects;

3. Repeatedly wipe the branches and leaves with scale insects with higher alcohol.

Brown soft scale infesting rubber trees

For the bollworm harmful to longevity flower, the control method is:

Artificial capture of larvae; spray 1.2% bitter tobacco emulsifiable concentrate 800~1000 times; spray household sanitary pesticides when the harm is serious; also use tobacco with high nicotine content for 24 hours and spray to kill. Mites (also known as red spiders), summer can harm a variety of plant leaves, control methods are:

Remove the branches of pests and diseases, burn them intensively; spray clean water when the mite quantity does not affect the growth of plants; when the pests occur seriously (June to July), use biological preparations such as biological insecticide Ding and insecticide Wang, which are common in the market, to have good control effect.

Dichlorvos should not be used to kill mites. Dichlorvos has the effect of stimulating the proliferation of mites. Do not use chrysanthemum pesticides (insecticides used to kill mosquitoes and flies in the family are mostly such drugs). It is ineffective in the prevention and control of mites.

In the family, red pepper can also be boiled in water for an hour and sprayed; or garlic, ginger, pepper in a mash, soaked in water for 12 hours and sprayed.

Six ways to kill insects and ants in flower pots

1. When small flying insects appear in flower pots, three or four cotton swabs (cotton sticks) can be used to fully dip in dichlorvos (to the extent that they do not drip down), insert the handle end into the pot soil around the plant, cover the potted flowers with plastic bags, and the flying insects can be eliminated.

Dissolve a tablespoon of detergent in 4 liters of water and spray it every two weeks to completely eliminate white flies and bacteria.

3. Mix 4 cups flour and 1/2 cup milk with 20 liters of water, filter with gauze, and spray on leaves to kill ticks and their eggs.

4. Pour beer into a shallow pot under the pot soil. Snails will drown if they climb into it.

5. Mash a garlic head, mix it with a tablespoon of pepper powder and half a liter of water. After an hour, spray it on the leaves to prevent mouse attacks.

6. Ants appear in flower pots, cigarette butts and tobacco can be soaked in hot water for a day or two. When the water turns dark brown, part of the water is sprinkled on flower stems and leaves, and the rest is diluted and poured into flower pots to eliminate them.