The latest sesame common pest control

Sesame is a very important oil crop in China. And there are many delicious dishes can not be separated from sesame, in our country's planting area is very extensive. However, we often encounter some problems when planting sesame seeds, which endanger the growth of sesame seeds. Among them, pests and diseases are the most serious. So what are the common pests of sesame seeds? How to prevent it? Let's take a look at it together with Xiaobian below!

1. Sesame blight

Symptoms: Sesame blight is a disease that occurs most often in the seedling stage of sesame. After the disease occurs, dark spots appear on the stem, and then gradually spread around the stem. It causes the stem to be seriously damaged to form a line, the seedlings to lodge, and when it is serious, it will cause the lower leaves of the plant to wither and die.

Control methods: First of all, we have to choose a good variety to ensure good disease resistance, disinfect the seeds before sowing, and use thiram and other agents for seed dressing. Then do a good job of soil preparation, deep turning and disinfection of the soil to eliminate germs in the soil.

2. Sesame root rot

Symptoms: Sesame root rot is mainly harmful to the base of the stem of sesame plants. Dark patches appear at the base of the stem at the beginning of the disease, but the boundaries are not clear. Then gradually become black rot symptoms, skin will be peeled off the words will find that the interior appears red. It causes the whole sesame plant to wither and gradually die.

Prevention and control methods: We should pay attention to the topography of the plot when selecting planting plots, and should not plant in low-lying places where water is easy to accumulate. Then in the process of planting to strengthen management, not too much watering, to prevent excessive humidity in the field, resulting in water retting roots. In the rainy season or when water is produced, timely drainage is required.

3. Sesame mosaic disease

Symptoms: Sesame mosaic disease, as its name implies, is mainly harmful to the leaves of plants. After the disease occurs, it will cause the stem to distort and the plant cannot grow tall. The seed setting rate is very low or even non-bearing, and the quality and yield are seriously affected.

Control methods: pay attention to the neighboring plots and soil crops, not for peanuts and other crops, otherwise easy to produce soil-borne diseases. Then we should choose seeds with strong disease resistance, strengthen management, and pay attention to preventing aphids and preventing them from carrying germs.

4. Sesame angular spot disease

Symptoms: Sesame angular spot disease can occur at any stage of sesame, generally concentrated in the seedling stage. The mortality rate of seedlings is extremely high after the disease, and water-like spots appear on the leaves of seedlings. Then gradually expand into dark polygonal lesions. And it also develops along the veins, causing damage to the whole plant leaves. After the top is damaged, it cannot continue to grow, causing the plant to die.

Prevention and control methods: before sowing, warm water, copper sulfate and other chemicals should be used for disinfection to eliminate germs in seeds. Or select excellent hybrid varieties to cultivate sesame varieties with strong disease resistance. Then do a good job of water management, timely discharge of accumulated water, harvest after the garden cleaning work, burning sick bodies and weeds. After the onset of the use of copper oxychloride and other chemicals for prevention and control.

The above is a brief introduction to common sesame pests. Sesame common pests are small cutworms, aphids, etc., pests can also carry germs, so we must pay more attention.