How to control cotton blind bugs? What is the best pesticide for blind bugs on cotton?

China's cotton field blind bugs mainly include green blind bugs, alfalfa blind bugs, three-point blind bugs, medium black blind bugs and forage blind bugs, etc., mainly with stinging and sucking mouthparts to absorb the juice of cotton young tissues, resulting in "headless seedlings", "multi-headed seedlings", "leaf-breaking madness", so that young buds, young boll fall off.

The adult of the cotton blind bug has strong flight ability and is agile and active. The main control points are: remove weeds in cotton fields in winter, eliminate overwintering eggs, and reduce the population base of overwintering insects; In spring, spray pesticides in alfalfa, vetch and carrot places where blind bugs are concentrated; Cotton fields are fertilized reasonably, and pruning and pruning are done in a timely manner; Conduct regular surveys and spray in a timely manner.

4 green blind bugs in the true leaf stage, 10 12 green blind bugs in the bud stage or 100 black blind bugs, more than 25 in the bud bell stage 100 plants for pesticide control, the end of June to the beginning of July is the peak period of blind bug damage, which can be controlled with phosphine, malathion, profenofos, endosulfan, cyhalothrin, cypermethrin, etc., and general control of surrounding crops and weeds; In the event of a severe occurrence, it can be re-vaccinated once in mid-July.

The damage of cotton blind bugs is manifested in jujube-cotton intercropping plots and ditch side plots, which occur early and cause serious damage. At present, the average damage rate of cotton blind bugs in some affected plots has reached 15-20. Cotton blind bug is a moisture-loving insect, elm trees and dense weeds at the edge of the ditch provide a good place for the occurrence and reproduction of the blind bug, this year's precipitation is more, these conditions are very favorable to the occurrence and reproduction of the cotton blind bug.

The vast number of cotton farmers should attach great importance to it, investigate it in a timely manner, and prevent it as soon as possible. Prevention and control methods: 5 scoop armor 1000-1500 times liquid, 30 touch 1000 times liquid, 26 quick kill 1500 times liquid, 20 bell bugs 1000 times liquid for spraying control.

Before 9 o'clock in the morning or after 5 o'clock in the afternoon, the best effect of drug prevention and control, jujube cotton intercropping plots and ditch side plots must be widely applied to cotton seedlings, weeds and trees.

Hello, blind bugs can be controlled with cyhalothrin, cyanoprofenof, mala phosphine, chlorpyrifos phosphine, fiprofenide, dinotefuran and other agents, according to a certain proportion of preparation, spraying on cotton plants can control blind bugs. When using pesticides to prevent and control blind bugs, according to the living habits of blind bugs, when spraying pesticides for prevention and control, they must be sprayed evenly and all sprayed, and it is best to concentrate on prevention and control. From both sides of the plot to the middle of the spray, improve the control effect, the liquid must be sprayed on both sides of the cotton leaves, especially the damaged cotton plant leaves, the upper and lower stems and the cracks around the ground should be sprayed.

The prevention and control time is best in the morning and evening, and the prevention and control drugs should be used in rotation, so that blind bugs and bugs can be better controlled.

Hello, blind bugs can be controlled with cyhalothrin, cyanoprofenof, mala phosphine, chlorpyrifos phosphine, fiprofenide, dinotefuran and other agents, according to a certain proportion of preparation, spraying on cotton plants can control blind bugs. When using pesticides to prevent and control blind bugs, according to the living habits of blind bugs, when spraying pesticides for prevention and control, they must be sprayed evenly and all sprayed, and it is best to concentrate on prevention and control. From both sides of the plot to the middle of the spray, improve the control effect, the liquid must be sprayed on both sides of the cotton leaves, especially the damaged cotton plant leaves, the upper and lower stems and the cracks around the ground should be sprayed.

The prevention and control time is best in the morning and evening, and the prevention and control drugs should be used in rotation, so that blind bugs and bugs can be better controlled. Blind bugs can be controlled with cyhalothrin, cyanoprofenof, mala phosphos, chlorpyrifos octathion, fiprofenyan, dinotefuran and other agents, and the effect is relatively good after use, which can effectively control blind bugs.

The prevention and control of green blind bugs should be done: frequently remove weeds inside and outside the park to eliminate the source of insects. After the grape leaves are revealed, nymphs are found to be infested, and they should be sprayed immediately for prevention and control, generally 2500 times of cyhalothrin EC, or 2000 times of 10% cyhalothrin EC.

Many green blind bugs live on weeds in the field, and all of them should be sprayed when spraying pesticides to effectively control the harm of green blind bugs.

For the culture soil with unsuitable pH, the following measures can be used to adjust. If the acidity is too high, a small amount of lime powder can be added to the potting soil; If the alkalinity is too high, a small amount of sulfur powder can be added to the potting soil.

Green blind bugs occur in April, and imidacloprid is used for prevention and control in mid-April, once a week, three times in a row.

How should green blind bugs be controlled?

Cotton worm eggs, bark, weeds, litter and legume crops parasitize throughout the winter and hatch in April. The cotton bugs breed on the host crops first, and the cotton adults migrate to the cotton fields after the emergence of cotton seedlings, and the most harmful period is from emergence to flowering. Due to its strong flight ability, rapid and active action, easy to flow and migrate, the adult has a long life span and strong reproductive ability.

It can reproduce three to seven generations per year, the population base is large, mostly in the morning or night, lurking in hidden places during the day, once the pest occurs, it is difficult to control. Cotton is widely distributed in China, and different cotton areas have different requirements for the main traits of cotton varieties due to different natural conditions. Therefore, different cotton areas should be based on local ecological conditions, soil conditions, cultivation systems, production levels, and the occurrence of pests and diseases.

In particular, the occurrence of Verticillium wilt and the country's requirements for different grades of raw cotton, the selection of excellent varieties with certain characteristics is the key to achieving high quality and high yield of cotton. The cotton bug prefers a warm and humid climate, with a suitable temperature range of 20 to 30, and the air humidity is around 80%. When the temperature is lower than 11 or higher than 35, it is not conducive to egg hatching.

Because the growing season of cotton is in the season of high temperature and rain, high temperature and high humidity are conducive to the growth and development of cotton blind bugs and pests. Cotton blind bugs have the habit of tending to the tip, young leaves, buds, and flowers; Cotton fields with early sowing, vigorous plant growth, high field humidity, unreasonable fertilization, untimely chemical control, and high planting density were more affected. However, the majority of cotton farmers generally have misunderstandings such as early sowing and early promotion, excessive density, unreasonable fertilization, and unscientific chemical control in planting management, which are easy to cause insect pests.

The cotton blind bugs that harm cotton are mainly feed blind bugs. In addition to cotton, the host of forage bed bugs is more than 20 crops and weeds such as sugar beet, spinach, alfalfa, Chinese cabbage, radish, rape, carrots, etc. The stinging and sucking of adult and nymphs of cotton blind bugs harms cotton, resulting in unbalanced vegetative and reproductive growth of cotton.

At the seedling stage, headless seedlings are formed, that is, male cotton, multi-headed seedlings, also known as broom seedlings. When the leaves of cotton are damaged at the true leaf stage, many black spots and holes are formed in the leaves, resulting in the growth of broken leaves.

The first is to choose varieties with strong resistance to diseases and insect pests, the second is to clean the ditch and drain the stains in time, the third is to spray drugs to prevent and control, the fourth is scientific fertilization, and the fifth is reasonable watering to ensure sufficient light.

1. Prevention and control of overwintering and early spring. Remove weeds and cotton stalks in the field before March to reduce the number of insect populations.

2. Balanced fertilization, the implementation of nitrogen, phosphorus and potassium formula fertilizer, organic fertilizer and chemical fertilizer matching, increase the application of biological fertilizer and micro fertilizer, do not apply nitrogen fertilizer, in order to prevent cotton from growing too vigorously and reduce the harm of cotton blind bugs.

3. Pharmaceutical prevention and control. Cotton blind bugs are weakly resistant and generally occur from June to early July. Can be diluted with deltamethrin emulsifiable concentrate20o0 times spray. The above agents are used alternately, spraying once every 5 to 7 days, and spraying 2 to 3 times by mouth.

I think it is possible to mix the insecticide in the soil at the time of sowing, and then spray the insecticide regularly after the cotton blooms.

Summary. To control cotton, you can use fipronil, malathion, etc.

To control cotton, you can use fipronil, malathion, etc.

Blind bugs, known as bed bugs, are pests of the order Hemiptera, the family Blind bugs. Blind bugs can be controlled with chlorophenethrin, cypermethrin, cyprofen bromide, high phosphorus, malacine thion, chlorpyrifos octathion, fiprofenocyanide and other agents.

Sorry to keep you waiting.

Prevention and control methods: pay attention to the selection of systemic insecticides in the use of drugs, (such as beetle bugs, gram bugs) liquid must be sprayed on both sides of cotton leaves, especially the damaged cotton plant leaves, up and down the stem and cracks around the ground should be sprayed with the solution. The best time for prevention and control is 5-7 p.m., and the prevention and control drugs should be used in rotation in the evening or early morning with 50% acemethamidophos.

60 g mu or 30 g of 5% kung fu inulin acre 45 kg foliar spray on water.

Sorry to keep you waiting. Prevention and control methods: pay attention to the selection of systemic insecticides in the use of drugs, (such as beetle bugs, gram bugs) liquid must be sprayed on both sides of cotton leaves, especially the damaged cotton plant leaves, up and down the stem and cracks around the ground should be sprayed with the solution.

The best time for prevention and control is 5-7 o'clock in the afternoon, and the prevention and control drugs should be used in rotation in the evening or early morning with 50% acemethamidophos 60 grams mu or 5% kung fu inulin 30 grams mu on 45 kg of water foliar spray, or avermectin emulsifiable concentrate 1500 times.