What are the common pests in wheat fields and how to control them?

There are many wheat pests, which are mainly divided into underground pests and above-ground pests. How to prevent and control these pests is easy to say and difficult to say. Every year, wheat production is reduced due to pests. It is not uncommon, so in this article, the little helper will talk about how to prevent and control wheat pests.

It is divided into two major aspects, one is underground pests, and the other is above-ground pests, respectively: 1. Underground pests

In wheat cultivation, common underground pests include mole crickets , wireworms, cutworms, grubs, etc., the severity of occurrence will vary in different areas. Underground pests are very harmful. They can directly eat wheat seeds. In the early stage, it will lead to lack of seedlings, broken ridges, and uneven seedling emergence. This is very common.

After the early and middle stages, symptoms such as yellowing of wheat, weak seedlings, and short growth may also be caused by the damage of underground pests, which is one of the reasons. In the later stage, wheat appears lodging, sometimes with Underground pests are related, for example, they damage the roots of wheat, causing the plants to be weak and prone to lodging.

Therefore, it is necessary to prevent the harm of underground pests in advance, and the best way to prevent underground pests is to mix seeds before sowing.

There are many wheat seed dressing agents on the market, and there are many dosage forms, and the corresponding prices will also be high or low. Most of them are mainly insecticides and fungicides, which can prevent insects. There are also products that can prevent diseases or only prevent insects, but they have a smaller market share and fewer buyers.

This article is about insect pests. Here we will introduce the pesticides used for seed dressing. Common ones include imidacloprid, isosaphos-methyl, carbofuran, thiamethoxam, etc. Use according to the dosage to avoid using too much, which may cause seedling suppression (too little dosage will not achieve the purpose of prevention), and some of these pesticides can not only prevent underground pests, but also have effects on above-ground pests. A certain preventive effect is also what will be discussed below. 2. Ground pests

During the growth of wheat, there are also many above-ground pests. Here are three main pests: aphids, gray planthoppers, and midges, looking at them separately:

1. Aphids

Aphids, also known as grub bugs and honey bugs, are very common and harmful during the growth of wheat. They mainly suck the juice of wheat (leaves and stems). , wheat ears will be damaged), if not prevented and controlled in time, it will have a great impact on yield.

For aphids, the best way to prevent them is to sow and dress seeds, using imidacloprid-based seed dressing agents. During the growth process, after aphids appear in the field, spray pesticides in time to prevent and control them. Optional pesticides include: imidacloprid, acetamiprid, etc. If the control effect is not effective at one time, apply several times more after an interval of 7-10 days. However, under normal circumstances, Aphids are also easy to control.

2. Gray planthopper

Grayal planthopper is also a sucking pest. It is also very harmful to wheat. It will not only affect the yield, but also affect the final quality. , for example, it can cause symptoms such as empty kernels and black ears in wheat. In addition, some diseases on wheat are also spread by BPH, so the prevention and control of BPH is also very important.

At present, imidacloprid can be used to control bovine planthoppers. In some areas where resistance to imidacloprid is high, pymetrozine can be used, but the price will be slightly more expensive.

3. Wheat midges

Wheat midges are also a very common pest in wheat fields. They mainly suck the juice of wheat grains that are filling, causing problems such as empty grains and reduced quality. Similarly It will also affect the final yield of wheat, ranging from 10-20% to 50%. In more serious cases, it will directly lead to a failed harvest. Of course, this is not a situation we want to see.

The prevention of midripas is mainly soil treatment, such as using phoxim or isosaphos-methyl. Secondly, once midges are found in the field, use medicine to prevent and control them in time. Commonly used medicines are chlorpyrifos and kung fu ( (High-efficiency cyhalothrin), deltamethrin, etc. can be used. If the control effect is not satisfactory at one time, try again after an interval of 7-10 days.