Common pests of wisteria and their control
Common pests of wisteria
The common pests of wisteria mainly include snails, scale insects and whiteflies.
scale insect
The main pest of wisteria is scale insect, which parasitizes on the edge of leaves and feeds on leaf juice. In severe cases, the whole plant will wither and die. Spray 1000 times omethoate solution at onset.
snail
Snails often appear in the rainy season in spring and summer. There is no radical cure, only nip in the bud. Sprinkle lime powder around plants regularly, once a month in the extra season and once in February-March in other seasons to ensure good ventilation.
Whitefly
Common diseases of wisteria
soft rot
The whole plant collapsed and died gradually at the time of onset.
Prevention and treatment
Control with 1000 times carbendazim solution and 800 times thiophanate-methyl soluble wetting agent.
leaf spot
Also known as black spot or brown spot, it mainly harms the leaves of wisteria. There are many brown spots on the leaves, which gradually fall off with time. This disease often occurs in high temperature and humid environment.
Prevention and treatment
Change the hot and humid environment; Remove the diseased leaves in time at the beginning of the disease; Spray Bordeaux once every 7 days, and it can be cured 4~5 times; It can also be controlled by carbendazim solution 1000 times.
Vein mosaic
It mainly harms the lateral veins of wisteria. In the initial stage, the lateral veins of wisteria will turn yellow and gradually expand to form radioactive lesions. Sometimes there are yellowing and spots on the main veins, which can cause leaf deformity in severe cases.
Prevention and treatment
In breeding and seed selection, sterile varieties are selected, or wisteria seedlings are disinfected before planting.
Common pests of golden buttons and their control methods
Golden buttons usually take two or three years to blossom, which means at least two summers. Summer in our country is very hot, and plants often grow some bugs. What are the common pests of golden buttons and how to prevent them?
Common pest of golden buttons: red spider
The red spider is one of the most common plant pests, which has a fast reproduction speed and can reproduce about 10 generation a year. Starscream is very small. It uses piercing mouthparts to insert mesophyll and stem bark of plants and suck the juice of plants, which makes them yellow or even wither.
Control method: 40% omethoate EC 1500 times solution can be sprayed.
Common pests of golden buttons: white spiders
The white spider was not a pest in China, but an alien species. Generally, foreign products have strong drug resistance, so white spiders are difficult to control. However, it is impossible to prevent it, or a beautiful gold button will be destroyed!
Prevention and control method: spray with 5% Bafenling suspension 2000 times.
Common pest of golden buttons: whitefly
Pest performance: Adults suck the juice from leaves, fruits and twigs, and the damaged leaves appear green, yellow and white spots, which expand into sheets with the aggravation of damage, and then the whole leaves fade and fall off early; The flavor and quality of damaged fruits are reduced, and young fruits often fall off when seriously damaged. The excretion of honey dew can induce black spot disease.
Control method: For early pests, spray 20% chlorpyrifos WP 1500 times or 25% mirex EC 1000 times, 2.5% Uranus EC 3000-4000 times, 2.5% fenpropathrin EC 2000-3000 times and 20% chlorpyrifos EC.
Common pests of hibiscus and their control methods
There are many pests that will harm the normal growth of hibiscus, and the common pests and control methods are mainly as follows.
red spider
The main injury is the back of the blade.
Control method: wash the whole plant with big water after discovery, and then spray acaricide, such as acaricide, acaricide, etc.
Whitefly
Mainly parasitic on the back of leaves, piercing mesophyll to absorb its juice will make leaves curl, turn green and yellow, and even dry up and fall off.
Control method: spray 25% chlorpyrifos wettable powder 1500 times to 2,000 times, spray it again after 5 days according to the insect situation, or spray it once with 10% imidacloprid wettable powder 2000 times, as long as the adults and larvae are killed, spray water repeatedly with the increase of ventilation and light, and the dirty mold on it. Under the condition of home cultivation, when adults are flying around, you can try spraying mosquito nets, then gently wipe off the moldy layer with a wet cloth, strengthen the management of water and fertilizer, and the plants will recover soon.
scale insect
It mainly harms stems, petioles and other places, with different sizes and colors, such as round and oval.
Prevention and control methods: you can brush it off with a toothbrush or wipe it with a rag, or spray washing powder, essential balm, or pesticides such as methomyl for prevention and control.
root knot nematode disease
From the above-ground part of the disease, the leaves grew weak in the early stage, and reddish-brown spots appeared on the edge, which spread inward, and the leaves dried up and fell off in the later stage. Observing from the underground part, we will find that there are large and small tumors between the roots of plants, which are smooth and fleshy in the early stage and rough and brown in the later stage.
Common pests of Huayuejin and their control methods
The basin soil of Huayuejin should be loose and breathable, with good drainage performance. Summer should not be sultry and humid, otherwise Huayuejin will get sick! Even if you are not sick, you need bugs! See what pests she will be troubled by!
Common pests of Huayuejin: scale insects
The damaged area is very wide, and the juice of the stems and leaves is sucked dry, which leads to the poor growth of the plants, and in severe cases, they will wither and die.
Its high incidence period is earlier than that of red spider, and it often breeds in early spring. But its harm is also easy to control, that is, it is often concentrated on a few plants. Sometimes a plant is covered with scale insects, but there is no one nearby.
Prevention and control method: when the amount is small, it can be removed with a brush. In addition, 800- 1000 times of liquid can be sprayed. Adding a certain amount of carbofuran into the culture soil has preventive effect, but the drug effect is only 3 months.
Common Pest of Huayuejin: Red Spider
The red spider is one of the most common plant pests, which has a fast reproduction speed and can reproduce about 10 generation a year. Starscream is very small. It uses piercing mouthparts to insert mesophyll and stem bark of plants and suck the juice of plants, which makes them yellow or even wither.
Control method: 40% omethoate EC 1500 times solution can be sprayed.
White spider: a common pest of Huayuejin
The white spider was not a pest in China, but an alien species. Generally, foreign products have strong drug resistance, so white spiders are difficult to control. However, it is impossible to prevent it, or a pot of flowers and a full moon will be ruined!
Prevention and control method: spray with 5% Bafenling suspension 2000 times.
Common pests of Huayuejin: root-knot nematodes
Root-knot nematodes will drill into the stems of Huayuejin and bite the plants, causing rotten hearts and leaves to fall off.
Prevention and treatment: gavage with carbendazim. When the pest is not too serious, carbendazim can be used to irrigate the basin to kill root-knot nematodes.
If the pest is already serious, you can try cutting your head and then burning the mother plant with root-knot nematodes.