What is the harm of red spider to plants, is red spider poison, and is it harmful to people?

Spider mites. Commonly known as big spider, sand dragon, big dragon, scientific name is leaf mite, is a common pest. It can lay eggs once a year, and the number of eggs can reach about 1,000 at a time, and hatch after a month, and 13 generations can occur in a year.

It has a wide distribution range, miscellaneous food, and harms more plants. Mainly Fabaceae, Solanaceae, Cucurbitaceae.

and lily family.

of vegetable crops. When found, measures should be taken to prevent and control as soon as possible to avoid the aggravation of insect pests.

1. What kind of worm is it?

Red spider is commonly known as big spider, sand dragon, big dragon, and its scientific name is leaf mites. The body color of adult mites varies greatly, generally in the shape of a red pear, and the adult mites in females are dark red and oval spherical, and the overwintering eggs are red, and the non-overwintering eggs are pale yellow. Juvenile mites are nearly round, have three pairs of legs, and are red for overwintering and yellow for non-overwintering.

About 1,000 eggs are laid once a year, and hatched after one month, and 13 generations can occur in a year.

Second, what is the effect on plants?

It has a wide distribution and a mixed diet, which can harm more than 110 kinds of plants. The main hazards are vegetable crops of the legume family, Solanaceae, cucurbitaceae and lily family. When the temperature rises in spring and the plants begin to germinate, the overwintering female adult mites begin to move and harm, first harming the leaves, and later dissatisfying the entire leaves, and will also spread through the wind.

Generally, July to August is the peak season, which will make the fully ripe leaves yellow and white, seriously affect the normal growth, and may even lead to death.

3. How to prevent and control it.

Spider mites usually occur frequently in high temperature and arid environments, so it is necessary to pay attention to timely prevention and control during high temperatures, and also change the maintenance environment, and pay attention to more ventilation at ordinary times. It can also be used to help eliminate its natural enemies, such as small flower bugs, heterochromic ladybugs, plant mites, and bundled feeding mite ladybugs. In addition, if the insect infestation phenomenon is more serious, it is recommended to spray the drug, and the drug can be 10% phenylpyridoxin emulsifiable concentrate 1000 times, or it can be combined with emamectin benzoate.

3000 times the emulsifiable concentrate to mix, so that the spraying effect will be better.

Spider mite, scientific name leaf mite, is a very common pest in the planting process of agriculture and forestry flowers and plants, mainly harming vegetable crops and flower plants such as Solanaceae, Cucurbitaceae, Liliaceae, etc., and seriously affecting the economic benefits of their planting.

Spider mites mainly harm the leaves, stems, flowers, etc. of plants, sucking the stems and leaves of plants, reducing the moisture of the affected parts, showing green and white, and the leaf surface presents dense pale small spots, curled and yellow. In severe cases, the plant has yellow leaves, scorched leaves, rolled leaves, defoliation and death. At the same time, spider mites are also the transmission mediators of viral diseases.

Spider mites are poisonous and belong to the low-toxicity socks. Spider mites adsorb on the human body**, and if they have been contacted**, symptoms such as rashes will appear, which will affect the health of young people or people with allergies. But under normal circumstances, spider mites do not cause serious harm to the human body, but mainly cause harm to trees, flowers, vegetables and other plants.

Spider mites are afraid of viper grass.

If you want to kill spiders, maybe this spring is more useful.

1. Soak the citrus peel with water about 10 times for a day and night, and spray the plants after filtration, which can prevent aphids and red spiders, such as watering the soil to prevent nematodes in the soil.

2. 15 grams of laundry detergent, 15 ml of 20% caustic soda, kilograms of water, spray after mixing the three, and check the late plexus after a day or two, the adult and larval mortality rate of red spider is 94-98%.

3. Take 50 grams of plant ash, add 2500 grams of water and stir fully, soak for two days and nights to filter, add 3 grams of laundry detergent and spray thoroughly, once a day, for three consecutive days, and spray for three days every other week, which can eliminate the second generation of pests and pests, and can also control aphids, red spiders, scale insects and other stinging and sucking pests. Put it in the soil to control maggots.

4. Use a plate of lit mosquito coils, put them in the pot of diseased plants, and then tie them tightly with a plastic bag, and after about an hour of smoke, both eggs and adults can be killed. It's a great way to save money and get results.

Logger mites habits:

Leaf mites are herbivorous mites, and there are three types: monophagous, oligophagous and polyphagous. The small-clawed mites on the island are the first group and feed only on cedar;The second group is the second group, which feeds only on cypress plants;The second spotted leaf mite is the third category, which can harm more than 150 kinds of economic plants.

Are red spiders poisonous?What kind of spider is it?

Don't worry, the poison is there, just apply some mosquito bite water or something!In general, brightly colored ones are poisonous. The spiders you see at home (in most parts of our country) generally do not touch the poisonous spider, and the common one is called the round spider.

Even if there is, it is all people can bear, don't be afraid, remember to dry the quilt more.

Are small red spiders poisonous?

There is no harm to the human body, don't worry about the disadvantages, just shoot it away, if there are a lot of them on the body, go wash them in vain, and take the clothes to wash. In the process of cultivating flowers, spider mites are common destroyers, and the flowers that suffer from them include Yueji, Milan, jasmine, kumquat, begonia, osmanthus, bergamot and other flowers. This insect is very small, less than 1 mm, round or oval, orange or reddish-brown, because of its small size is not easy to find, once it is found to be a pest, often the flower damage is relatively heavy.

This insect pest method is to pierce the mouthparts into the leaves and suck the sap, so that the chlorophyll is destroyed, and the leaves appear gray and yellow spots or patches, and the leaves are orange, fall off, and even fall light. This insect prefers a high temperature and dry environment, so it reproduces rapidly and causes serious damage in high temperature and arid climates. Insects mostly swarm on the back of flower leaves and spin silk nets to cause damage.

In addition to crawling on their own, the spread of spider mites is an important way for wind, rain and operation.

Are spider mites poisonous? 10 points.

There are many kinds of small red spiders, the more common is the red spider in the vegetable garden, such a spider is not poisonous, and his size is small, in the spider class, such a big spider is a small spider is to bite **people**, red spider harm.

Spider mites mainly live on the back of leaves, sucking sap, so that the chlorophyll is destroyed, and the leaves appear gray-yellow spots or patches, and the leaves are orange and fall off.

Is spider mites poisonous in your home?

It's not toxic, and even if there is, it's insignificant.

Is red spider poison to kill with orange-red liquid.

Spiders are more or less poisonous, but there are very few spiders in China that can poison people, and if they are bitten, they will be fine after a few days of swelling and pain.

Color is not evidence to judge whether a spider is poisonous or not, the most poisonous spider in the world is black, and there are more black spiders.

Does bamboos attract red spiders? , is it toxic?

There may be finch orange poison, because the brighter the color in the animal kingdom, the more "Uncle Ben is poisonous, stay away from me", of course, some animals are disguised with bright colors to protect themselves.

There are many species of spider mite, some species are venomous, while others are non-venomous.

At present, the most common red spider is the cotton red spider, the distribution gradually increases from north to south, it mainly gathers on the back of the leaf to absorb the juice, so that the leaves are gray-white or withered yellow fine spots, and the leaves dry up and fall off when they are serious, and spin silk and webs on the leaves, which seriously affects the growth and development of plants.

Spider mites are common pests of the first child, often parasitic on vegetable crops of the legume family, Solanaceae, cucurbitaceae and lily families. Red spider elimination method: take an appropriate amount of chili pepper, put it in a pot, add water, boil, pour it into a spray bottle, spray it on the red spider, and you can kill it.

Using 6000 times liquid isodilin EC, spraying the front and back of the leaves can eliminate red spiders.

Ways to control spider mites

Spider mites have strong fecundity, occur in multiple generations a year, have fast development speed, short cycle, can reproduce both sexes and parthenogenesis, have strong adaptability, and have a wide range of transmission methods. For most spider mites, they are highly active. The temperature determines the development cycle, reproduction rate and yield of each insect state of the red spider, and the arid and hot climate conditions often lead to its large occurrence.

Therefore, it must be prevented and controlled in time before the arrival of the high temperature and dry season.

There are many types and numbers of natural enemies of pests, mainly including deep-spotted mite-eating ladybugs, bundle-tube mite-eating ladybugs, heterochromatic ladybugs, large and small lacewings, small flower bugs, plant mites, etc., which play a positive role in controlling the population of pests. Therefore, do not harm natural enemies when controlling pests.