Symptoms and control methods of false smut in rice

Rice is an important food crop in China, the planting area is very vast, with the progress of technology, the yield of rice has been greatly guaranteed, but in the planting process, disease is an important factor hindering the high yield of rice. Among them, rice false smut is a common one, so how to prevent and cure rice false smut? Let's get to know it.

1. Symptoms

Rice false smut is a kind of fungal disease, which is more common in rice planting, which mainly harms the panicle of rice. generally, when the disease occurs, a kind of mycelium will be formed in the panicle of rice, which will gradually enlarge and cause the rice grain to split. Careful observation also found that there are yellowish goose lumps, similar to spores. After a period of time, these spores will crack and turn into dark green powder, which will spread through wind and rain, resulting in damaged rice ears or grains, which will not continue to grow normally.

2. The regularity of the disease

It can carry germs to spread. Generally speaking, the rice field itself is infected with false smut. When the rice is ripe and harvested, it is very likely to carry the pathogen in its planting. Sometimes it is difficult to find, but after sowing with germ-carrying seeds, the grown rice will slowly emerge at the panicle stage, and then occur in a large area. The second situation is that the soil carries false smut pathogens, which are so adaptable that they can survive the winter safely even in cold weather in winter. when the temperature rises in the second year, rice will reproduce slowly after sowing, and the harm will be spread with wind and rain at the panicle stage.

3. Prevention and control methods

First of all, we should select varieties with strong disease resistance, be reasonable in fertilization, do not apply too much nitrogen fertilizer, and suggest rational use of nitrogen, phosphorus and potassium fertilizer. In the middle and later stages, we can appropriately supplement some trace elements to ensure normal growth. Strengthening field management, such as seed dressing before sowing, can have a certain preventive effect. Secondly, we should do a good job of drying the field and remove the sick and disabled bodies in time after harvest. Special fungicides can be used to prevent and cure the disease, such as Jinggangmycin, difenoconazole, propiconazole and so on.

The above is the introduction of the symptoms and control methods of rice false smut, hope to help you, want to know more related knowledge, please pay attention to us.