CATDOLL : CATDOLL: What is the most effective medicine for rose spider mites?

1. What is the most effective medicine for rose spider mites?

We can spray with drugs such as bifenazate. We can use cypermethrin, cypermethrin and other miticides for spraying. We must insist on continuous spraying, spraying once every 5-7 days. For the diseased roses, we can prune them first. We can prune off some of the damaged leaves and flower buds. Even if there are more leaves, it doesn’t matter. We can prune them all.

Then we can use a spray bottle or a high-pressure water gun to spray directly on the back of the leaves. We must ensure the impact of the water flow and wash away the red spider mites on the leaves as much as possible. It doesn’t matter if some of the remaining leaves are washed away. Red spider mites like to gather on the back of the leaves, so we must be careful when flushing. Spray water 2-3 times a day, so that the effect will be seen faster.

Spraying water can cool it down and make it moist, which is an environment that spider mites hate, and it can prevent it from reproducing. After a period of time, the spider mites will be eliminated. Another trick is to put it outside when it rains. After a few heavy rains, the spider mites will be almost eliminated.

2. My peanuts are infested with red spider mites. What kind of medicine should I use?

Red spider mites are one of the most important pests of field peanuts. They gather on the back of leaves, form webs, suck the flesh and juice of leaves, destroy chlorophyll, and affect the photosynthesis of leaves. When the damage to peanuts is light, yellow-white spots appear on the leaves, the edges curl back to the back, and growth stops. In severe cases, the leaves turn white and fall off, causing the plants to die. Recently, I conducted a field survey in the main peanut-producing townships in the east and found that some peanut fields were seriously infested with red spider mites. As the drought develops, the damage caused by red spider mites will be further aggravated.

Forecast basis: 1. Insect source. According to the survey, some plots have an average of 10-40 insects per leaf, and some even have more than 100. 2. Climate conditions. Under high temperature and drought conditions, the reproduction capacity of red spider mites is enhanced. The recent drought in our county has continued to develop, which is one of the main reasons for the large-scale occurrence of red spider mites. It is hoped that all relevant townships will actively carry out field surveys, pay close attention to the occurrence dynamics, and provide timely guidance for prevention and control to ensure that the peanut seedlings are full and strong.

Prevention and control methods: Use 30-40 grams of 15% cypermethrin wettable powder or 60-80 grams of 10% avermectin cypermethrin or other road mite killers per mu, add 40-50 kilograms of water, and spray evenly.

3. What pesticide is best for treating red spider mites in citrus?

Use integrated prevention and control techniques. Use pesticides during the peak breeding season in spring (April to May) and autumn (September to October). Use lime sulfur and pine alkali mixtures to clean the garden alternately in winter. For details, see "Citrus Red Mite"

4. There are red spider mites on the leaves of my strawberries, and the leaves have turned yellow and are dying. Can anyone tell me a way to kill red spider mites without using pesticides?

1. Bring the insect-infested plants to the bathroom and rinse them directly with water;

2. Spray brown sugar water;

3. Use medicated soap water, and soak until the soap water just starts to foam;

4. Soak tobacco in water for about two or three days, then spray red spider mites;

5. What pesticides can be used to kill orange red spider mites?

Red spider mites have always been the main pest of citrus in the south. In Guangdong, there are 12 to 24 generations of spider mites each year. The peak period of spider mites is from April to May and from September to October. You can touch the leaves to check if they are stained red. If the spider mites infect the leaves, there will be small gray spots, and even a large number of leaves will fall. If the fruit is damaged, the peel will be gray and the color will be poor. In severe cases, the fruit will fall. In the young fruit stage, if the spider mites are serious, the leaves will turn white, and the fruit will be prone to nutrient deficiency, which will cause the fruit to fall. At this time, you should also pay attention to the damage of rust spiders.

Red spider mites have a strong reproductive capacity, with 12 to 20 generations in a year, and two peak periods. The first peak is in April-May when spring shoots are growing, when nutrients are rich and a large number of red spider mites migrate from old shoots to young leaves of new shoots to cause damage. The second peak is in September-October, when they damage autumn shoots and tend to be green. When new shoots grow, the mites on old leaves move to the new shoots. So, what pesticide is most effective in preventing and controlling citrus red spider mites?

1. Chemical control:

Spray the plants with red spiders with chemical pesticides to eliminate the insect source and block the spread of the insects to other plants. You can choose orange light, suction resistance, etc. for prevention and control.

2. Strengthen plant management

Remove the yellow leaves, old leaves, diseased leaves and diseased fruits at the bottom in time. To ensure adequate nutrient supply, apply 200-300 times diluted Sea Elf biostimulant to promote balanced absorption by the roots and enhance the plant's resistance to stress.

Once a small number of plants are found to be infested with red spider mites, they should be dealt with immediately. All plants with red spider mites should be moved to the same area and all their flowers and fruits should be removed.

3. Use natural enemies to control

In the early stage of red spider mite outbreaks, natural enemies are used to control the population, and predatory mites are released during the flowering to fruiting period.

Try to reduce the number of red spider mites before releasing predatory mites, use 1% matrine·azadirachtin or 10% avermectin water dispersible granules for pest control, and release predatory mites 5 to 10 days after application at a benefit-harm ratio of 1:10 to 1:30. One predatory mite can prey on 300 to 500 red spider mites in its lifetime, and also suck the eggs of harmful mites, which can effectively control the damage of red spider mites.

6. There are many red spiders growing under my sofa. Mosquito killer doesn't work. What can I use to kill them?

Is it red spider? I use mosquito repellent to spray my house, and usually 2-3 times is enough.