What are the common control methods for household flower diseases?
Flowers are currently the main household greening plants for city dwellers, and various diseases are often encountered during the growing process. If not controlled in time, they will affect the growth of the flowers. Below are the common disease control methods for flowers. Take a quick look so you can treat the right problem with the right remedy.
(1) Root rot
Root rot is a plant disease caused by pathogens in the soil. It usually shows as wilted leaves, slow growth, and the whole plant gradually turning yellow and dropping its leaves.
Root rot happens because the plant is watered too much, drowning the plant, so the plant's root system rots.
When root rot occurs, promptly take the plant out of the pot, throw away the old soil, cut off the rotten roots, remove the diseased branches and leaves, soak in potassium permanganate solution, then repot it with new soil and place it in a ventilated, shaded spot.
(2) Powdery mildew
Powdery mildew is a relatively common disease, and the probability of it occurring around us is also frequent. It is caused by a fungal infection. It is generally more active during the plum rain season. At first, white spots appear on the leaves, then they slowly cover the entire leaf until it finally turns gray. Pay attention to ventilation and light - these are key, and powdery mildew will slowly spread.
Once discovered, deal with it promptly. If you find a powdery mildew infection, you can promptly use a small teaspoon of dish soap mixed with water to wash the leaves. If it is severe, cut off the diseased leaves and promptly spray chlorothalonil or thiophanate-methyl solution.
(3) Anthracnose
Anthracnose is a very annoying disease. It generally occurs on plant leaves, showing as small water-soaked spots on the leaves at first, then the small spots spread outward and become rings of brown lesions, gradually spreading until the entire leaf turns brown and dries up. The lesions can form holes, and diseased leaves easily fall off.
At the early stage of the disease, cutting off the diseased leaves and burning them promptly can prevent expansion; during the disease period, promptly spray 75% thiophanate-methyl wettable powder 1000x solution, 75% chlorothalonil wettable powder 600x solution, or Tante Ling wettable powder 500x solution, or 50% tanfumei wettable powder 500x solution. Once every 7 to 10 days, for 3 to 4 consecutive times, gives a relatively good control effect.
(4) Black mold disease
Also called sooty mold, it is generally caused by the honeydew secreted by aphids. When this disease and pest problem appears, it also means that an insect pest infestation is about to occur. This disease and pest problem weakens the leaves' ability to photosynthesize, blocks the stomata, and causes leaves to fall off.
Control: An effective control method is to wipe the leaves with diluted soapy water.
(5) Southern blight
Southern blight affects the whole plant at the roots and the base of the stem. At first, white silky mycelium appears, then it slowly affects the leaves, and finally the plant rots and dies. Southern blight generally occurs in environments with high temperature, excessively high humidity, and waterlogged soil, so while paying attention to the overall environment, you must also pay attention to water control.
Chemical control: At the early stage of the disease, you can use Juandun diluted 800-1000x or Fengqia Genbao 600-800x, or pour 1% copper sulfate solution at the root of the diseased plant, or use carboxin wettable powder, add water and spray.
(6) Fusarium wilt
Fusarium wilt is relatively common on various vegetables and fruits, such as common tomatoes, peppers, peas, and melons. The symptoms are that the leaves at the top and bottom of the plant wilt, then recover slightly at night, and after some time the whole plant wilts.
In more severe cases, it affects the flowers and causes the fruit to rot, seriously affecting flowering and fruiting. First, small spots appear on the flowers and fruit, and then as the fruit grows, they slowly become black leathery patches.
These are usually caused by careless watering and waterlogging damaging the plant's root system. Then the calcium in the soil cannot be absorbed by the plant, causing the plant to lack water for growth, and it is prone to infection in hot, dry environments.
As long as the plants are cared for properly, the vast majority of diseases and pest problems can be avoided, and the plants can be kept healthy. When caring for plants, do not pour water directly on the leaves. Keep the leaves dry and do not give the plants too much water. This helps avoid infection by the vast majority of diseases and pests. If disease is found, promptly cut off diseased leaves and diseased branches, and promptly spray fungicides, such as chlorothalonil or thiophanate-methyl solution.
The common diseases of flowers include the above 6 major types. During the growing process, everyone should pay attention to preventing them in advance, otherwise it will promote the occurrence of diseases. The above are detailed disease and pest control methods. Do not miss them.
Control methods for flower diseases
Flower (Flower ['flauə]; plural: Flowers), is the general term for plants grown for appreciation. It has modified short branches with reproductive function, and there are many types.
A typical flower, on a short axis with limited growth, bears the calyx, petals, and the stamens and pistils that produce reproductive cells. A flower is composed of the corolla, calyx, receptacle, and stamens and pistils. It comes in all kinds of colors, and some are very showy and fragrant.
Flower diseases include non-infectious diseases and infectious diseases. The main factors causing non-infectious diseases include temperature, sunlight, humidity, drought, waterlogging, severe cold, insufficient or imbalanced nutrients, and mechanical damage. For example, in summer under the scorching sun, plants wilt from lack of water or suffer local sunburn, with leaf edges scorched; in winter, leaves suffer frost damage; acid-loving flowers watered with alkaline water for a long time become iron-deficient, and the leaves yellow, whiten, and even dry up; pollution from toxic gases in the air, etc. This type of disease only affects the affected plant itself and cannot be re-transmitted. Infectious diseases are diseases caused by fungi, bacteria, viruses, etc. parasitizing the plant body. In suitable environments, they can rapidly grow, spread, and expand, causing disaster.The main diseases include: black spot, brown spot, anthracnose, etc. To control black spot, spray 50% carbendazim wettable powder 1000x solution as early as possible. At the same time, strengthen management by applying more phosphorus and potassium fertilizers to improve the plant's disease resistance. To control anthracnose, spray 1:1:120 Bordeaux mixture before sprouting. In addition, promptly remove dead leaves and residual branches and burn them in a centralized manner to reduce sources of infection. This is effective for controlling various diseases.
Common household flower diseases in summer and their control
In June, temperatures continue to rise, and rainfall increases from south to north in our country. After Xiaoman, the weather gradually turns hotter, marking the quick arrival of summer. At this time, temperature is high and humidity is high. The middle and lower reaches of the Yangtze River are in the plum rain season, which is the month with the largest rainfall of the year. Flowers at this time are most susceptible to diseases and pests. When plants become sick and wilt and pests eat the leaves, can you accurately identify the cause?In fact, flower diseases are mainly divided into two types: physiological diseases and infectious diseases. Physiological diseases refer to diseases that occur due to adverse environments, such as water imbalance, unsuitable temperature and light conditions, deficiency or excess of a certain nutrient element, and soil salt injury. Infectious diseases refer to diseases caused by infection by harmful organisms, such as fungi, bacteria, viruses, and nematodes. Leaves affected by disease show discoloration, necrosis, rot, deformity, and wilting, seriously affecting ornamental value.
Pests are also something that cannot be ignored in household flower care. There are many kinds of pests harmful to flowers, and often one flower can be harmed by many kinds of pests, preventing the plant from growing normally and even causing death. According to incomplete statistics, there are more than 5000 species of flower pests in our country, the vast majority of which are insects, followed by mites and mollusks, etc. According to feeding method and damaged part, they are usually divided into four categories: piercing-sucking pests, leaf-eating pests, stem-boring pests, and underground pests.
Watching your beloved flowers and plants wither day by day due to disease and pest damage, I believe you must feel very sad. Only by accurately identifying the cause can you treat the right problem with the right remedy, so that flowers and plants can avoid the troubles of diseases and pests and grow healthily.
Common household flower diseases and their control
Powdery mildew control methods: You can spray 25% triadimefon wettable powder 2000-3000x solution, or 50% carbendazim wettable powder 500-600x solution, or 70% thiophanate-methyl wettable powder 600-800x solution, etc. When the disease is severe, spray once every 7-10 days, for 2-3 consecutive sprays. Different pesticides should be used alternately to avoid the pathogen developing resistance.
Triadimefon wettable powder is a specific remedy for treating powdery mildew. Its residual effect period can reach 20-25 days. After spraying, the white powder layer on the affected part turns dark gray, shrinks, and disappears. It is a relatively ideal pesticide for controlling powdery mildew.
At home, you can also use baking soda spray. Spraying affected plants with 1% baking soda solution can achieve a control rate of more than 80% for flower powdery mildew. African jasmine anthracnose
For leaf diseases such as African jasmine anthracnose, snake plant leaf spot, aloe round spot, Malabar spinach purple spot, sago palm leaf spot, and arrowroot leaf blight, the control methods include:
1. Promptly remove and destroy diseased leaves; 2. At the early stage of the disease, spray 75% chlorothalonil wettable powder 800x solution, or 50% carbendazim wettable powder 1000x solution, or 70% thiophanate-methyl wettable powder 800x solution, or 70% zineb wettable powder 800x solution, and some fungicidal drugs to prevent the disease. Spray the leaves once every 7-10 days, for 2 to 3 consecutive times, to achieve a relatively good effect;
3. Keep the plant ventilated and exposed to light, and promptly drain accumulated water in the potting soil. Control soil moisture, eliminate the harm of high temperature and high humidity to the plant, and promote robust plant growth, so as to achieve a good disease prevention effect. In summer, place it in a relatively cool semi-shaded environment, and absolutely avoid exposure to the sun.
For scale insects such as the cottony cushion scale harming pittosporum, the brown soft scale harming rubber tree, the black-brown circular armored scale harming sago palm, and the red wax scale and white wheel armored scale harming Aglaia odorata, the control methods include:
1. Cut off infested branches; 2. Apply 3% carbofuran granules at the roots. Each pot (about 20 cm in diameter) can be given 2-3 grams. After applying, cover with soil and water.
3. During the peak hatching period of nymphs, before wax has formed or when the wax layer has just begun to form, spray the branches and leaves with 40% profenofos emulsifiable concentrate 1500-2000x solution, or 6% imidacloprid soluble liquid 2000x solution, or pyrethroid pesticides (insecticides) 2500x solution. Use the above three agents alternately, spraying once every 7-10 days, for 2-3 consecutive sprays, to achieve a good effect. The key to spraying is to seize the timing (nymph stage). Once the scale shell is formed, spraying is unlikely to be effective.
At home, you can also use: 1. Rice water plus a small amount of laundry detergent, brushed on the branches and leaves;
2. Use a cotton ball dipped in vinegar to wipe the leaves and branches, which can kill scale insects;
3. Use high-proof white liquor to repeatedly wipe the branches and leaves infested with scale insects.
Brown soft scale harming rubber tree
For the cotton bollworm harming kalanchoe, the control method is:
Handpick the larvae; spray 1.2% nicotine and tobacco emulsifiable concentrate 800-1000x solution; when the damage is severe, you can spray household sanitary insecticide; you can also soak cigarette tobacco with high nicotine content for 24 hours and spray to kill. Mites (also called red spider mites) can harm the leaves of many plants in summer. The control method is:
Remove diseased and pest-infested branches and burn them in a centralized manner; when the mite population does not affect plant growth, you can spray clean water to wash them off; when pest occurrence is severe (June to July), commonly available biological agents on the market such as biological insecticide Ding and insecticide Wang all have relatively good control effects.
Do not use dichlorvos to kill mites. Dichlorvos has the effect of stimulating mite proliferation, and do not use pyrethroid pesticides (household insecticides used to kill mosquitoes and flies are mostly of this type), as they are ineffective for mite control.
At home, you can also boil red chili peppers in water for one hour and spray; or mash one of garlic, ginger, or Sichuan pepper, add water, soak for 12 hours, and spray.
Six methods to eliminate insects and ants in flower pots
1. When small flying insects appear in the flower pot, use three or four cotton swabs (cotton sticks), soak them thoroughly in dichlorvos (until it is not dripping), insert the handle ends into the potting soil around the plant, cover the potted flower with a plastic bag, and the flying insects can be eliminated.
2. Dissolve one tablespoon of laundry detergent in 4 liters of water, and spray the flower leaves once every two weeks. This can thoroughly eliminate whiteflies and bacteria.
3. Mix 4 cups of flour and half a cup of milk into 20 liters of water, stir, filter through gauze, and spray on the flower leaves. This can kill spider mites and their eggs.
4. Pour beer into a shallow basin placed under the flower pot soil. Snails that crawl in will drown.
5. Mash one large garlic bulb, mix it with one tablespoon of pepper powder into half a liter of water. After one hour, spray it on the flower leaves to prevent rat invasion.
6. If ants appear in the flower pot, soak cigarette butts and tobacco in hot water for one or two days. When the water turns dark brown, sprinkle part of the water on the flower stems and leaves, and after diluting the rest, pour it into the flower pot to eliminate them.