What are the latest control methods for corn aphids
The corn aphid is one of the common pests and diseases that harm the growth and development of corn. It causes damage to both the yield and quality of corn to a certain extent, and is one of the main insect pests of corn. So how should corn aphids be controlled? Let's take a look together.
1. Seed dressing with chemicals
Before sowing corn, appropriate amounts of chemicals such as thiamethoxam and imidacloprid can be planted into the soil together with the seeds. By coating the seeds with these chemicals, the control effect on aphids is excellent. To strengthen the control effect, when the corn seeds are about to take root and sprout, thiamethoxam and imidacloprid can be sprayed once more for a second coating, and in this way the control effect reaches more than 90%.
2. Fertilizing with chemicals
Besides chemical seed coating, there are many methods for controlling corn aphids, and when chemical control is used, thiamethoxam and imidacloprid are mostly used; these two chemicals are the nemesis of aphids. Besides being used at sowing, when fertilizing corn, appropriate amounts of thiamethoxam and imidacloprid can also be added and applied together, which can likewise achieve an excellent control effect. However, pay attention to the dosage of the chemicals to avoid chemical damage, and at the same time pay attention to alternating the chemicals to avoid resistance and preserve their control effect.
3. Improving the environment
The corn sowing period is the time when aphids reproduce most vigorously. Often many seeds are damaged by aphids before they even sprout, so the seedlings cannot emerge normally. Therefore, in this situation, besides using chemical control, the weeds around the plot can also be cleared away completely to keep the growing environment well ventilated, and this can also eliminate the places where aphids grow and reproduce, reduce the harm of aphids to corn, and keep the growing plot with sufficient light, giving a better effect on aphid control.
4. Spraying chemicals for control
When corn is suffering from aphid damage, chemical control is needed at this point. First clean the plants damaged by aphids with a brush, then after a week spray thiamethoxam and imidacloprid chemicals once. After using the chemicals 3-4 times in succession, the corn will gradually recover its growth and grow better. Spraying is best done in the morning or evening on a sunny day; it is not suitable to spray at noon on a sunny day or on rainy days. If sprayed at noon on a sunny day, the liquid volatilizes quickly, which increases the concentration of the liquid and very easily causes chemical damage, while on rainy days the sprayed liquid is washed away and diluted by rain and also fails to achieve the expected effect.
The above is an introduction to the control methods for corn aphids. We hope it can help you. To learn more related knowledge, please follow us.