Control methods of corn aphids

Corn aphid is one of the common diseases and insect pests that harm the growth and development of maize, which will cause damage to the yield and quality of corn to a certain extent. So how to control corn aphids? Let's take a look.

1. Seed dressing with medicament

Before sowing corn, thiazine, imidacloprid and other chemicals can be planted in the soil and the seeds can be coated by these agents, which has an excellent effect on the control of aphids. In order to strengthen the control effect, we can also spray thiazide and imidacloprid again when the corn seed is about to take root and sprout, and carry on the second coating, so that the control effect is more than 90%.

2. Chemical fertilization

In addition to chemical coating, there are many methods for corn aphids, and thiazide and imidacloprid are mostly used in chemical control, which are the nemesis of aphids. In addition to the use of sowing, when fertilizing corn, an appropriate amount of thiazide and imidacloprid can also be added together, which can also have an excellent control effect. However, we should pay attention to the dosage of drugs to avoid drug damage, and at the same time, we should pay attention to the alternate use of drugs, so as not to produce drug resistance and its control effect.

3. Improve the environment

The most vigorous period of aphid reproduction is when corn is sown, and many seeds are harmed by aphids before they sprout, so that the seedlings can not be unearthed normally. Therefore, in addition to the use of chemical control, it can also clean up the weeds around the plot, maintain the ventilation of the growth environment, remove the growth and breeding places of aphids, reduce the harm of aphids to corn, and maintain sufficient light in the growing parcels. The effect on the control of aphids is better.

4. Spray prevention and cure

When corn is harmed by aphids, it is necessary to use medicine to control it. First, clean the plants harmed by aphids with a brush, and then spray thiazide and imidacloprid once a week later. After the continuous use of 3-4 times, the corn will gradually return to growth, can grow better. Spraying is best chosen in the morning or evening on a sunny day, but not at noon on a sunny day or on a rainy day. If it is sprayed at noon on a sunny day, the liquid volatilizes quickly, resulting in an increase in the concentration of the liquid and easy to produce drug harm. on cloudy and rainy days, the spray solution was washed and diluted by Rain Water, and the expected effect could not be achieved.

The above is the introduction of corn aphid control methods, hope to help you, want to know more related knowledge, please pay attention to us.