What are biopesticides, what are the types of biopesticides?

To put it simply, biopesticides are based on organisms, including plants, animals, and microorganisms, to extract the active substances or use secondary metabolites or directly use the animals themselves to kill insects, bacteria, and weeds.

Let me give you a few examples: the pitenin extracted from the plant bitter bark vine bitter has stomach toxic activity against small ground tigers, armyworms, etc.; Pyrethroid extracted from pyrethrum has been widely used to kill mosquitoes and flies, etc., and is commonly known as gunner. The use of natural enemies of pests, such as raising red-eyed bees and seven-star ladybugs, to control the number of pests is also considered biopesticides.

There are even more microorganisms, and the growth hormone gibberellin is a metabolite of gibberella; BT (Bacillus thuringiensis) is widely used in the control of cotton bollworm because of the release of insecticidal concomitant crystals.

In addition, taking these active compounds as the parent and adding some groups also belong to the category of biological pesticides, and they are not counted as biological pesticides if they do not undergo chemical reactions. There are many more examples, if you are interested, buy a related book.

Biopesticides refer to the use of living organisms (fungi, bacteria, insects, viruses, genetically modified organisms, natural enemies, etc.) or their metabolites (pheromones, auxin, naphthalene acetic acid, 2, 4-d, etc.) to kill or inhibit agricultural pests.

Biological pesticides refer to living organisms used to control pests in agriculture, forestry and animal husbandry, which can be divided into three categories: natural enemy insects (parasitic natural enemies, predatory natural enemies), natural enemy microorganisms (bacteria, viruses, fungi, nematodes, protozoans) and genetically engineered organisms ** genetic plants, genetically engineered microorganisms, genetically engineered insects).

<> Types of biological pesticides: microbial pesticides, agricultural antibiotics, plant-derived pesticides, biochemical pesticides, natural enemy insect pesticides, plant-derived pesticides. The activity of microbial pesticides is directly related to temperature, and the suitable temperature of the use environment must be higher than 15 degrees Celsius.

and below 30 degrees Celsius. Below the right temperature, the sprayed biopesticides multiply slowly and are difficult to work in the pests, and in general, 20-30 microbial pesticides are 1-2 times more effective than 10-15.

Biopesticides refer to pesticides that have good insecticidal and disease control effects on crops and do not have any harmful residues to human health. I'm just a farmer. I'm obsessed with green agriculture, so I have a certain understanding.

It must be confirmed that these pesticides are extracted from some plants, such as matrine preparations, rosin.

Mixed preparations and a variety of wild cotton, Xanthium.

Fresh half summer. Herbal preparations such as prickly pear are ubiquitous in rural areas. They don't need to spend money, but they need time to focus.

From Bacillus thuringiensis, avermectin.

Insecticides extracted from biological sources such as cotton bollworm, Spodoptera litura, and karyotype polyhedrovirus. The fungus includes a mixture of stone sulfur, Bordeaux liquid, and edible vinegar. Many plant-derived pesticides are common in the agricultural raw material market, such as matrine, rotenone, azadirachtcin, liru, pyrethroid, citrin, and essential oils.

The main raw material is already present in the organism. They are resistant to disease and plague.

There is no direct toxicity. They play a role in regulating the growth and development of cultures or diseases and plagues. Such as brassinolide, gibberellin, attract insects.

Such as bacterial biologics, Bacillus thuringiensis, fungal preparations, Beauveria bassiana, insect viruses made of biological agents, such as ribbopolysaccharides.

Viruses, granulosa viruses and viruses from cytoplasmic polyhedra. Nematode preparations are biological agents made from microbial metabolites, such as avermectin, vitamin A salt, liuyangmycin, etc. Such as insect ecdysone, insect information bait, insect fungicide and insect isotropic pyrimidine in insect inhibitors.

There are three relatively large types, one of which is plant-derived pesticides, and then also includes microbial pesticides, and animal-derived pesticides, for example, the first is a pesticide made by plants, and then it can be naturally decomposed in the environment.

The main ones are biochemical pesticides, microbial pesticides, and agricultural antibiotic preparations. Mainly including some pesticides, herbicides, fungicides, acaricides, plant growth regulators and so on.

The types of pesticides include plant-derived pesticides, animal-derived pesticides, microbial pesticides, selective pesticides, and destructive pesticides, which are the types of biological pesticides and are also more common types on the market.

Polyoxygen: agricultural antibiotic, soluble in water. Gramcon:

New agricultural antibiotics. Avermectin: an antibiotic acaricide, which has a contact killing effect on insect pests.

Wuda Oasis No. 1: Viral insecticide, mainly used to control lepidopteran pests. Nicotian:

It is a multi-important plant insecticide.

1. Multi-oxygen clearing

Duo Oxygen Qing, also known as Xingnong 606, is an agricultural antibiotic, soluble in water, cucumber downy mildew, apple, pear black spot, grape black pox, rice sheath blight, etc., can be effectively prevented, need to be diluted before spraying crops, generally need to be used once every seven days, 1-2 times in a row.

2. Gramcon

Kezhikang, also known as mesomycin, is a new type of agricultural antibiotic, which has a good ability to prevent and control bacterial and fungal diseases in crops, and can be used to prevent and control bacterial diseases of vegetables, fruit tree diseases, crop fungal diseases, etc., diluted and sprayed in the early stage of the disease, and used 3-4 times in a row.

3. Avermectin

Avermectin, also known as farmhouse, is an antibiotic acaricide, which has a slight toxicity and contact killing effect on insect pests, but can not kill eggs, and has little residue after being diluted and sprayed on the surface of the plant, which can be decomposed by microorganisms, has no accumulation effect on the environment, and can be used to control rice borer with significant effect.

4. Wuhan University Oasis No. 1

Wuda Oasis No. 1 is a virus insecticide, which can mainly be used to control lepidopteran pests that erode fruit trees, and can directly act on the nucleus of insect larvae, resulting in larval death, so as to achieve the effect of insect pest control, and can be used during the peak period of insect pests.

5. Tobacco furry

Nicotinin is a multi-important plant insecticide mixed with nicotine, chlorophylline and neem, which has a strong stomach toxicity and contact killing effect, has a high insecticidal effect against resistant pests, and volatilizes quickly on plants, and the toxicity will not be absorbed by plants, which is suitable for vegetables and fruits.

This refers to the pesticide that is designed for the development of biological resources, and this pesticide is also very good, and can prevent pests very well, there are different types.

Among pesticides, this pesticide refers to the pesticide made from biological residues and plant straw, which is very safe.

It refers to the direct use of active substances or living organisms produced by organisms themselves, including synthetic natural active structures and their analogues.

This is to see which crops are applied to, whether it is fruit trees or vegetables, different crops choose to use different biological pesticides, let's take a look at fruit trees first. If this mite has been found on the fruit tree, there are some pests such as red spider and beetle, then we can choose a broad-spectrum insecticide, like this avermectin. <>

Abamectin is widely used, it is a biological pesticide in the production of pollution-free fruits so far, accepted by most fruit farmers, and can play a good role in killing pests in some occupations, and avermectin is not a pesticide with high residue and high toxicity. The use of avermectin is relatively convenient and fast, and the effect is relatively long, and the effect of prevention and control often plays a very thorough role, because avermectin is a long-acting insecticide and has a very strong contact killing effect. <>

There are all kinds of biopesticides on the market, all kinds of manufacturers have them, and there are different slogans and slogans for different slogans, we must keep our eyes open when choosing. When buying this biological pesticide, there must be this production date, certificate, shelf life, in line with the national standards for biological pesticides, if there is no license, the certificate does not meet the national standards, we do not buy. <>

Some biopesticide technology is not up to standard, which is easy to affect people and our livestock, so this should be paid attention to. When we choose biopesticides, we must choose those that are less toxic to humans and animals, so that we will not have too many worries when spraying. Because some people often raise chickens and ducks under the fruit trees to play a role in removing weeds, and the fruit will be eaten by chickens and ducks when it falls, so that it will not be easy to cause waste.

In this case, the choice of biological pesticides should be better to choose those with low toxicity to humans and animals, of course, if you want to buy them, you can buy them from large manufacturers, which is more reliable.

First of all, we must look at the variety of crops, and secondly, we must observe what kind of disease is occurring, and then prescribe the right medicine to solve it.

It is necessary to choose according to the characteristics of crops, and when choosing, try to choose those additives that are too few.

To choose the root model only according to the pure characteristics of the crop, the biological pesticides selected for fruit trees and vegetables are naturally different, and avermectin is generally selected, which is widely used in the production of pollution-free fruits.

First of all, it is necessary to understand which kind of disease the biopesticide is specifically targeted, and then use the corresponding biopesticide according to the disease suffered by the crop. Now there are many biological pesticides, some biological pesticides, it mainly controls some vegetable insects, red spiders, or like this leaf curly goose and so on, so we should use effective biological pesticides according to the characteristics of pests and diseases. Don't kill spider mites originally, we use it to kill other insects, the effect is not achieved, it will waste time and waste pesticides.

When using biopesticides, generally the interval is a little closer than that of other pesticides. For example, if we use avermectin, it may take 10 days before a booster spray, but if we use a biological pesticide, the interval is generally 3 to 4 days. Biological pesticides have no residual effect, but they are also easy to volatilize, so in order to achieve a thorough effect, it is often necessary to strengthen a prevention and control after 3 or 4 days to play a role in killing.

Biological pesticides also need to be diluted to a certain extent, and the dilution ratio must be correct, not increased or reduced. Don't think that I want to better kill some pests and diseases, I increase the concentration, so that the effect will be faster, this idea is wrong, the dilution ratio of pesticides is calculated to avoid increasing the damage, and in order to avoid the waste of pesticides, so it is necessary to strictly follow the instructions. <>

The use of biopesticides should also be aware of changes in the weather, but also of changes in temperature. If it's going to rain, then we don't need to spray pesticides, because pesticides are easy to water, if it rains after spraying, it is very likely that we will be busy this time, and our pesticides are basically diluted by rain, and there will be no effect. Of course, if the temperature is too high, biopesticides will definitely be affected, generally speaking, the appropriate temperature for the use of biopesticides is around 25 or 30 degrees.

Choose pesticides according to crops, and then when using pesticides, you should also pay attention to the ingredients, you should also pay attention to the efficacy, you should also pay attention to whether you can dilute it with water, and when you use it, you should avoid when the weather temperature is particularly high.

First of all, we must prescribe the right medicine, choose the right biological pesticides, but also need to understand the use of biological pesticides, we must pay attention to the proportion of pesticides and dosage problems, when using biological pesticides, we must do a good job of personal protective measures, avoid contact with **, there should be avoid the use of pesticides in rainy weather, to avoid affecting the effect of pesticides.

When using biopesticides, special attention should be paid to the control of temperature. The activity of biological pesticides is directly related to temperature, and the suitable temperature of the use environment should be above 15 and below 30. Below the suitable temperature, the sprayed biological pesticides will reproduce slowly in the pests, and it is difficult to play a role, resulting in poor efficacy of the product.

In general, the control effect of biopesticides at 20 30 conditions is 1 2 times higher than that at 10 15 conditions.

To control the temperature, look at the humidity of the air, and the weather, spraying when the air is drier will have a good effect.

The storage environment of biological pesticides must be suitable, and if it is not suitable, it is easy to lose its activity and thus lose its efficacy. After we buy this biological pesticide back, then we should save it according to the conditions indicated on the manual, and now there are some biological pesticides that are avoided in direct sunlight and should be placed in a cool and dry place, so we should do a good job of corresponding preservation according to such instructions. <>

The use of biopesticides must be selected according to the object of control. The same rice can raise hundreds of people, but one medicine cannot cure hundreds of diseases, so when we prevent and control some diseases, we should choose biological pesticides with strong targeting according to the characteristics of biological pesticides. Don't use drugs blindly, blind medication will affect this economy, and it will also waste our physical strength and waste our time.

The time to use pesticides should be chosen well, the time is wrong, and the effort is in vain. Biopesticides have the characteristics of fast effect and safety, but they are also easy to volatilize and dilute. When we spray biological pesticides, we should avoid the rainy season, avoid high temperature weather, and disperse on rainy days, which is equivalent to being busy in vain, because the sprayed pesticides will be diluted by the rain, and the efficacy will be very low, and the effect of killing will not be effective.

If it rains after spraying, then after the rain is over, we also need to intensify the spraying once to kill the effect. You also need to pay attention before spraying, wait until the rain dries, don't wait until there is a lot of water on the crop to spray, so the effect will not work. <>

Biopesticides should also be equipped with the correct allocation method. Nowadays, pesticides are concentrated, so we need to make the correct configuration according to the instructions when using them. Some need to add water, some only need to add other mixtures to use, then these should be noted, if you don't understand, you can ask the owner of the pesticide when buying, basically he will explain to you how to use it.