Common diseases of wheat and their control methods

Wheat is a traditional crop in China, which is often disturbed by diseases and insect pests in the process of wheat planting. These diseases and insect pests seriously affect the quality and yield of wheat and bring huge economic losses to farmers. Understanding the characteristics and control methods of diseases and insect pests is an important technology to achieve high and high yield of wheat. The following pro-agricultural network brings you common wheat diseases and insect pests and control methods. Let's take a look.

1. Wheat powdery mildew

During the period from seedling to heading, wheat powdery mildew mainly harms wheat leaves, stems and spikes. at the initial stage of the disease, small white spots begin to appear in the leaves, and with the development of the disease, the small white spots gradually spread into round white mildew spots. There is another layer of white powder on the surface of the mildew spot, and in the later stage, the mildew spot will turn into a gray or brown spot with small black particles.

Control methods: select varieties with strong disease resistance to plant, deeply turn over and disinfect the soil in planting, reduce the source of bacteria, the planting density should be reasonable and should not be too dense, spray the diseased leaves at the initial stage of the disease, and pick and clean the diseased leaves in time.

2. Wheat rust

Wheat rust mainly harms leaves, leaf sheaths, stems and spikes. According to the location of the disease, it is called differently, such as leaf rust and culm rust, but the nature is the same. Yellow or brown spore pile appeared in the affected part, these spores spread continuously through the air, the speed of transmission was fast, the injured surface was positive and wide, and the color of the spore pile gradually changed to black in the later stage. It has a great impact on wheat, affecting the growth and development of wheat, making wheat grains thin, affecting yield and varieties.

Prevention and control methods: also select varieties with strong disease resistance, plant and disinfect the soil deeply. At the initial stage of the disease, tebuconazole and diniconazole are sprayed. When the disease is serious, not only the wheat field is sprayed, but also the surrounding areas are sprayed together to prevent the spread of the disease.

3. Aphids

Aphids mainly suck the sap of leaves, stems and ears, and there are small yellow spots after sucking. With its slow ingestion, the whole leaves, stems and ears will gradually wither, and finally the whole plant will die. Its absorption of juice affects the photosynthesis of wheat, resulting in poor nutrition transport of the plant, and it is best to make the wheat grain thin and affect the yield.

Control method: chemical spraying, can be safe to natural enemies of selective spraying, which can not only protect the natural enemies of aphids from harm, but also kill aphids, with the gradual decrease of aphids, until the ratio of natural enemies to wheat aphids is less than 1: 150, do not spray at this time.

The above are the common diseases and control methods of wheat brought to you by the pro-agricultural network. Only by understanding the characteristics of wheat diseases and insect pests can you identify what kind of diseases and insect pests. Only then can you prescribe the right medicine. I hope it can help you.