How to treat the cotton aphid, a world pest?

Prevention and controlIt is best to carry out it at an early stage, do not wait until it appears before carrying out prevention and control, because it is often a headache to prevent and control after it appears, and it is also easy to cause a greater impact, which will directly cause a reduction in production and so on. There is a saying that good prevention is greater than **, when we plant crops, it is best to use different agents to dress seeds in the early stage, because the early use of pesticides for seed dressing can effectively kill some germs and bacteria, and some insects, so that it is not easy to appear this pest and disease in the later stage. <>

One symptom of this pest and disease is that the leaves curl and the buds tend to fall off during flowering, which greatly affects the growth of the crop. Once this symptom is found, then we spray with pesticides in a timely manner, each pesticide is used in a different way, and we must use it according to the instructions of the pesticides. Many people will be prone to make a mistake, then only use a kind of glory, so the effect is often not good, because this one is very easy to produce this resistance from them, so we should replace it in time when spraying with pesticides, and it should be replaced once to avoid repeated use of drug resistance, which cannot be completely eliminated.

In the growth period and development period, a preventive insecticide work should be done in advance. For example, the use of pesticides such as butiamidamidine for control, its validity period can be as long as 14 days. In other words, spraying this pesticide once can prevent the disease from occurring for 14 days.

Of course, there are some pesticides, its prevention period can be more than 40 days, this agent will be relatively expensive, and need to be mixed with other pesticides, for this kind of you should consult the owner of the pharmacy, basically they will know how to recommend. <>

In order to avoid some insects hiding in some weeds and not having the effect of complete extermination, if there are weeds around the crops, they must be removed in time. It is best to burn the weeds with fire, because some insect eggs may be in the weeds, and these can be better controlled.

Cotton aphid is a worldwide pest, which can cause leaf curl and flower buds to fall off when the damage is serious, which seriously affects the growth of cotton plants. In field production practice, the control of cotton aphid has been mainly based on chemical control, but with the extensive use of insecticides, cotton aphid not only has a high level of resistance to organophosphorus, carbamate and pyrethroid agents, but also has different degrees of resistance to neonicotinoid pesticides such as imidacloprid and acetamiprid.

In 2016, researchers from the Cotton Institute of the Chinese Academy of Agricultural Sciences selected six new pesticides to conduct field trials in Anyang County, Henan Province, to study the control effects of different new pesticides and different application methods on cotton aphid, so as to provide a scientific basis for delaying resistance and efficient control of cotton aphid.

A variety of different pesticides can be used for the control of cotton aphid, and according to different types of pesticides, corresponding application methods such as seed dressing, furrow application or spraying can be adopted; In order to prevent the rapid rise of cotton aphid resistance, attention should be paid to the rotation or alternating use of different types of pesticide varieties in the field, and avoid using the same agent in a single application.

It is necessary to water and fertilize in time, and at the same time, it is also necessary to observe pesticides regularly, remove insect pests in time, be sure to prescribe the right medicine, and also ensure that the light is sufficient, do a good job of drainage and ventilation, and loosen the soil in time.

Pesticides. Because pesticides can kill cotton aphids and are very effective, pesticides should be used to control them.

In the event of such a stupid change of town conditions, we must choose insecticides with good efficacy, we must water and fertilize as soon as possible, and we must choose the right drug or fertilizer according to the growth of coarse matter in the farming belt, pay attention to the efficacy, pay attention to the ratio inside, and you can choose the way of foliar spraying.

Actively invest in scientific and technological research, develop new anti-cotton aphid drugs, improve the varieties of cotton crops, improve the high survival rate of the town, strengthen the research on cotton, and study new storage methods for circular grinding.

Some pesticides should be used, the use of these things is relatively good, and only the use of these things can be controlled.

Prepare some insecticides, mix them with water and insecticides, and spray them on the plants to kill the insects.

Yes, this plant is convenient when planting, as long as it is planned and planted in the soil, it will grow very well.

The more effective agent for the control of aphids is 70 Amele, 5 grams of seedling aphid per mu, 10 grams of aphid per mu, 30 kg of water spray, and the effective period is more than 20 days; It is followed by 1500 times of 35 Saidan (endosulfan) emulsifiable concentrate, 800 times of acetamacin and 1000 times of Jinhaonian.

Aphids, also known as vegetable aphids, greasy insects, etc., including peach aphids, radish aphids and cabbage aphids, are one of the main pests of cruciferous vegetables such as cabbage.

Use silver gray film to avoid aphids. Pharmaceutical prevention and control: Commonly used agents are:

50% aphid-asciopy fog wettable powder or anti-aphid carb wettable powder, 10 18 grams per mu, spray 30 50 kg of water. This agent is specially designed to control aphids, does not kill natural enemies and bees, and is especially suitable for harvesting fields. Once net or 10% imidacloprid wettable powder, the dosage per mu is 5 10 grams to 100 kg of water.

Prevention and control methods.

1. Drug prevention and treatment.

When a large number of aphids are found, spray pesticides in time. Spray the plants 1 2 times with 50% marathon emulsion 1000 times, or 50% pyridoxine emulsion 1000 times, or 50% anti-aphid wettable powder 3000 times, or deltamethrin emulsion 3000 times, or 3000 times of dissol emulsion, or 40% imidacloprid aqueous solvent 1500 2000 times, etc.; Use 1:6—1:

Prepare chili water in a ratio of 8 (boil for about half an hour), or spray with laundry detergent water in a ratio of 1:20—1:30, or use 1:

20:400 ratio of prepared laundry detergent, urea, water mixed solution spraying, continuous spraying of plants 2 3 times; For aphids such as peach powder aphid, which is coated with wax powder, 1% soapy water or washing powder should be added when applying any agent to increase adhesion and improve the control effect.

2. Artificial prevention and control.

In autumn and winter, whitewash the base of the trunk to prevent aphids from laying eggs; Combined with pruning, cut off the damaged branches and residual flowers, and burn them intensively to reduce the overwintering insect population; In winter, scrape or brush off the densely overwintering egg masses on the bark, clean up the residual branches and leaves in time, and reduce the eggs of overwintering insects; When a small number of aphids are found on the flowers in spring, you can use a brush dipped in water to brush them off, or place the potted flowers under tap water and rinse them in a swirling way.

3. Protect natural enemies.

There are many natural enemies of aphids, including ladybugs, lacewings, aphid flies and parasitic wasps, etc., which have a strong inhibitory effect on aphids. Try to apply as little broad-spectrum pesticides as possible, avoid applying pesticides during the peak period of natural enemy activities, and artificially raise and release aphid natural enemies if conditions permit.