What medicine has a good control effect on Fusarium wilt?

The chemicals used for Fusarium wilt differ at different stages. Generally, for newly affected plants, spray the withered leaves thoroughly with 10-15g of JiaK·fungicide at 300-500 times dilution, and at the same time drench the roots with 600-700 times dilution of 80% hymexazol; for severe disease, use 41% polyoxy·pyrimethanil at 600-800 times dilution, dilute evenly and spray, and at the same time drench the roots of diseased plants with 600-800 times dilution. Of course, the chemicals and dosages used for Fusarium wilt differ among different plants, for example:

1. Banana Fusarium wilt

For lightly diseased banana plants with Fusarium wilt, use a broad-spectrum fungicide diluted in 30 jin of water to drench the root and stem base, drenching 3 times in a row at 3-5 day intervals, to promote root growth, strengthen the plants and provide disease resistance. Spray 41% polyoxy·pyrimethanil at 800-1000 times dilution; when spraying, try to spray the solution onto the backs of the basal leaves. Mid-to-late disease stage: spray 41% polyoxy·pyrimethanil at 800 times dilution; apply once every 3-6 days. Or spray 38% oxadixyl·dimoxystrobin at 600 times dilution onto the backs of the basal leaves. Using these chemicals can treat banana Fusarium wilt, but if you want to eliminate it completely you need to change the land for planting.

2. Tomato Fusarium wilt

At the early stage of disease, the middle and lower leaves wilt around noon and can recover in the morning and evening; later the wilting worsens, the leaves turn yellow from bottom to top, the roots soften and rot and then the plant dies, the stem base near the ground becomes water-soaked, and under high humidity pink or blue-green mold-like growth appears.

Control method: Qingkulike at 100-250 times dilution + Wofengsu at 600 times dilution + garlic oil at 1000 times dilution for spraying + root drenching; for severe disease, it can also be compounded with 70% thiophanate-methyl wettable powder at 1000 times dilution.

3. Melon Fusarium wilt

Fusarium wilt is mainly about prevention; besides crop rotation and heavy application of organic fertilizer, chemicals can be used for prevention. In plots with a history of disease, roots can be dipped in Pincui plant vaccine ester before transplanting, and after transplanting drench the roots 2-3 times at 10-15 day intervals. The Pincui special package for melon Fusarium wilt, after secondary dilution, is diluted in 120-150 jin of water and sprayed on the leaves.

Prevention of Fusarium wilt is very important; besides selecting disease-free and disease-resistant varieties, timely pruning and thinning for ventilation are also needed.