How to control wheat blossom midge? Latest technical method tutorial
Wheat suffers from many insect pests during its growth process, and the blossom midge is one of them. Its larvae damage wheat during the grain-filling stage. As long as there is one blossom midge in a wheat grain, the yield will be reduced by one quarter; with two, the yield is halved; with four, there is total crop failure. This shows how devastating it is, so control must be taken seriously. Now let us learn about the control techniques for wheat blossom midge together.
1. Difficulty of control
The adult wheat blossom midges appear mostly from late April to early June. They lay eggs on wheat ears, and the egg stage lasts only five days. After hatching, the larvae can enter the wheat grains and cause damage. Therefore, the optimal control window is only about one week, and it is very easy to miss the opportunity. Once the larvae enter the wheat grains, spraying pesticides can hardly control them, which brings great difficulty to control.
2. Control during the pupal stage
Broadcasting poisonous soil to kill the pupae should be done 3-5 days before wheat heading, and it is better to be early than late so as not to miss the good opportunity. The available pesticides include 40% chlorpyrifos emulsifiable concentrate and 3% isofenphos-methyl granules. Take 500 ml and 2 kg of each respectively, mix them evenly with 20 kg of fine sandy soil to prepare poisonous soil, and broadcast it evenly on the soil surface along the rows in the afternoon. Be careful not to scatter it on the leaves when broadcasting, so as to avoid phytotoxicity. Spraying water after broadcasting can increase the efficacy.
3. Control during the adult stage
It should be carried out after wheat heading and before flowering, while also controlling aphids. The available pesticides include beta-cyfluthrin emulsifiable concentrate and imidacloprid wettable powder. After preparing the pesticide solution according to the regulations, spray it at 7 a.m. on a sunny day or at 5 p.m. in the evening. Note that it should be done in windless weather, as strong wind will affect the spraying effect. When spraying, spray evenly, and do not miss the wheat ears and leaves. This can control the number of adult populations and the number of eggs laid.
4. Precautions
The control of blossom midge must be strict. If the key period is missed, the control effect cannot be achieved. Therefore, wheat farmers should seize the opportunity, make decisions promptly, apply pesticides in time, control blossom midge well, and ensure a bumper harvest that year. When using pesticides, be careful and cautious, and take corresponding protective measures to avoid pesticide poisoning.
The above is an introduction to wheat blossom midge control techniques. We hope it can help you. If you want to learn more related knowledge, please stay tuned to us.