1、 Disease manifestation

Fusarium wilt often occurs in the flowering and fruiting stage of tomato, especially in the full fruit stage, which will lead to plant death. At the beginning of the disease, the middle and lower leaves of the plant wilt at noon, but recover in the morning and night. After that, the leaves will gradually turn yellow from bottom to top, but they will not fall off, and the plants will slowly wither. It may get sick on one side of the plant and still grow healthily on the other side

2、 Cause of disease

There are many reasons for tomato wilt. For example, the soil is sticky and acidic, which contains certain bacteria. Or because there are nematodes and other pests in the soil, they spread them to the plant. It may be due to organic manure or rotten soil. In addition, if nitrogen fertilizer is applied too much, or it clears up after continuous cloudy and rainy weather, it is also easy to suffer from diseases

3、 Treatment method

First of all, the diseased leaves should be removed to other parts, so as to avoid further wilting or deterioration of the disease. The picked leaves should be burned to completely eliminate the bacteria. Then we should use the green kricklick, WVP and garlic oil to make the spray and root. If the condition is serious, it needs to be treated with thiophanate methyl

4、 How to prevent

To prevent tomato Fusarium wilt, we should first select varieties with strong disease resistance, pay attention to crop rotation, remove weeds and dig deep into the soil. If nutrient soil is used, it needs to be sterilized and put in a sunny place for about three weeks. When transplanting, pay attention to spraying disinfectant, do a good job in drainage in rainy season, and use rotten organic fertilizer for irrigation