According to the insect forecast released by the national corn industry technical system, from June to early July of this year, the occurrence area of ​​the two-pointed armyworm in the summer-summer corn area of ​​Huanghuaihai will exceed last year, and it will partially or outbreak. This reminds the majority of growers.
The two point insects are a new corn pest. After the emergence of wheat stubble corn can be harmful, bite off the corn seedlings, or drill rake corn stem base, the formation of dry dead heart, corn lodging, severely affecting yield.
Control of adult insects to reduce the source of insects
The prevention of oviposition in the field of adults of E. apetala is effective as a simple method to reduce the damage by effectively reducing the number of larvae. After the harvest of wheat in mid-June, during the corn planting period, the adult of the second generation of Athetis lepigone is in the peak period. It can spray pesticides with contact and fumigation, such as 48% chlorpyrifos EC 800-1000 times, 30% acetomethamine. Phosphorus EC 600 times, or 80% DDVP 1000 times -1500 times, 2.5% lambda-cyhalothrin EC 2500 times, 4.5% beta cypermethrin EC 1000-2000 times the whole field uniform spray control. In order to increase the effect of killing eggs, it is possible to add 10% Suppository EC 2000 times. Early prevention and control can be carried out in conjunction with sealing chemical weeding. Areas where conditions permit can give priority to pesticide-free lamps, sex attractants and other pollution-free prevention and control technologies.
Early larvae control improves control
The 2nd instar larvae are very sensitive to pharmacological agents, and the individuals are small, only 0.5cm, and the pests are under the cover of the corn ridge, and the damage to the corn is not obvious at this time. This stage can be controlled by spraying method. The agent can use 50% phoxim 1000 times, 20% chlorantranzamide 4500 times, 80% DDVP 1000 times, and 48% chlorpyrifos 1200 times. Such as any one of them, 45kg per mu liquid, uniform field spray control.
Medium-term control and control hazards
When the larvae enter the third instar, the food intake and drug resistance are significantly increased, and the hazard will rapidly increase. The pests have concentrated on the roots of corn seedlings and started biting and drilling on the base of the corn stems, causing the heart of the corn seedlings to wilted to death. According to the test, bait and poisonous soil are used to prevent and control at this time, and its control effect is obviously better than other control methods.
The poison bait can be made of 48% chlorpyrifos EC 50ml, or 80% dichlorvos EC 200ml, add appropriate amount of water and stir evenly into sauteed wheat bran 5kg, or 48% chlorpyrifos EC 100ml + 80% dichlorvos EC 150ml + leafy cabbage leaves (or weeds) ) +5kg sauteed wheat bran, or 30% poisonous microcapsule suspension 500mL, mix 25 pounds of sauteed wheat bran, and then heap stuffy for 2 hours. In the evening, sprinkle a small heap around the base of the corn seedlings about 5cm from the corn seedlings. Wheat straw is thicker at a thicker place, and generally no longer increases the risk of seedlings the next day.
Toxic soil can use 80% of dichlorvos emulsifiable concentrate 300ml-500ml, 48% of chlorpyrifos emulsifiable concentrate 400-500ml, or 30% poisonous xinxin microcapsule suspending agent 500mL per acre, add appropriate amount of water evenly into 25kg fine soil, and apply it in the morning. Apply on corn seedlings.
Emergency prevention and control reduce losses
Because farmers did not take the above measures in time, serious larvae of 4th-age or older larvae would appear on some plots. At this time, the body length of the larva has reached more than 1 cm. It is in a period of gluttony and has the habit of transforming the plants. A large number of pests drilled and gnawed the base of the corn stems and bite corn secondary roots. The rate of death and lodging in the field increased rapidly and should be taken immediately. Quantian Irrigation Prevents and Controls Larvae Emergency Control Measures . (1) Spray corn root circumference: Unscrew the sprayer water spinner or spray it on the stem base of corn seedling with straight sprayer. The agent can use 48% chlorpyrifos cream 1500 times liquid or 30% acephate cream oil 1000 times liquid Wait. (2) Dosage with water. 48% chlorpyrifos EC 800ml or 50% phoxim EC 500ml+48% chlorpyrifos EC 300ml, diluting the selected drug and loading it into a Coke bottle, placing the infusion tube device on the water outlet of the well and putting the solution Evenly mixed with irrigation water and poured into the field.
The two point insects are a new corn pest. After the emergence of wheat stubble corn can be harmful, bite off the corn seedlings, or drill rake corn stem base, the formation of dry dead heart, corn lodging, severely affecting yield.
Control of adult insects to reduce the source of insects
The prevention of oviposition in the field of adults of E. apetala is effective as a simple method to reduce the damage by effectively reducing the number of larvae. After the harvest of wheat in mid-June, during the corn planting period, the adult of the second generation of Athetis lepigone is in the peak period. It can spray pesticides with contact and fumigation, such as 48% chlorpyrifos EC 800-1000 times, 30% acetomethamine. Phosphorus EC 600 times, or 80% DDVP 1000 times -1500 times, 2.5% lambda-cyhalothrin EC 2500 times, 4.5% beta cypermethrin EC 1000-2000 times the whole field uniform spray control. In order to increase the effect of killing eggs, it is possible to add 10% Suppository EC 2000 times. Early prevention and control can be carried out in conjunction with sealing chemical weeding. Areas where conditions permit can give priority to pesticide-free lamps, sex attractants and other pollution-free prevention and control technologies.
Early larvae control improves control
The 2nd instar larvae are very sensitive to pharmacological agents, and the individuals are small, only 0.5cm, and the pests are under the cover of the corn ridge, and the damage to the corn is not obvious at this time. This stage can be controlled by spraying method. The agent can use 50% phoxim 1000 times, 20% chlorantranzamide 4500 times, 80% DDVP 1000 times, and 48% chlorpyrifos 1200 times. Such as any one of them, 45kg per mu liquid, uniform field spray control.
Medium-term control and control hazards
When the larvae enter the third instar, the food intake and drug resistance are significantly increased, and the hazard will rapidly increase. The pests have concentrated on the roots of corn seedlings and started biting and drilling on the base of the corn stems, causing the heart of the corn seedlings to wilted to death. According to the test, bait and poisonous soil are used to prevent and control at this time, and its control effect is obviously better than other control methods.
The poison bait can be made of 48% chlorpyrifos EC 50ml, or 80% dichlorvos EC 200ml, add appropriate amount of water and stir evenly into sauteed wheat bran 5kg, or 48% chlorpyrifos EC 100ml + 80% dichlorvos EC 150ml + leafy cabbage leaves (or weeds) ) +5kg sauteed wheat bran, or 30% poisonous microcapsule suspension 500mL, mix 25 pounds of sauteed wheat bran, and then heap stuffy for 2 hours. In the evening, sprinkle a small heap around the base of the corn seedlings about 5cm from the corn seedlings. Wheat straw is thicker at a thicker place, and generally no longer increases the risk of seedlings the next day.
Toxic soil can use 80% of dichlorvos emulsifiable concentrate 300ml-500ml, 48% of chlorpyrifos emulsifiable concentrate 400-500ml, or 30% poisonous xinxin microcapsule suspending agent 500mL per acre, add appropriate amount of water evenly into 25kg fine soil, and apply it in the morning. Apply on corn seedlings.
Emergency prevention and control reduce losses
Because farmers did not take the above measures in time, serious larvae of 4th-age or older larvae would appear on some plots. At this time, the body length of the larva has reached more than 1 cm. It is in a period of gluttony and has the habit of transforming the plants. A large number of pests drilled and gnawed the base of the corn stems and bite corn secondary roots. The rate of death and lodging in the field increased rapidly and should be taken immediately. Quantian Irrigation Prevents and Controls Larvae Emergency Control Measures . (1) Spray corn root circumference: Unscrew the sprayer water spinner or spray it on the stem base of corn seedling with straight sprayer. The agent can use 48% chlorpyrifos cream 1500 times liquid or 30% acephate cream oil 1000 times liquid Wait. (2) Dosage with water. 48% chlorpyrifos EC 800ml or 50% phoxim EC 500ml+48% chlorpyrifos EC 300ml, diluting the selected drug and loading it into a Coke bottle, placing the infusion tube device on the water outlet of the well and putting the solution Evenly mixed with irrigation water and poured into the field.
As a professional supplier of medical apparatuses and instruments, Suzhou Medtion International Trade Co., Ltd. is located in Zhangjiagang City, Jiangsu Province. We are wholly owned subsidiary of Jiangsu Redleaf Medcial Equipment Co., Ltd who is a professional Medical equipment producer for 30 years. We specialize in developing and producing stretchers,anti-coronavirus products, first-aid product, Funeral Products, ward products, Diagnosis Device, emergency rescue product and so on. We supply one stop purchasing of Medical Equipment for all overseas customers. Our products can be made in accordance with customers' requirements. With advanced technology, scientific production equipment, reliable product's quality, conform contract, stable credit and excellent service, we have got the production aptitude and passed all quality authentications successfully. We warmly welcome you to cooperate with us.
Isolator Hoodie,Isolation Hoodie For Anti Virus,Non Pollution Isolator Hoodie,Medical Negative Pressure Isolation Hoodie
Medton Medical , https://www.medton.cn