Control measures of Fusarium wilt of leek

Symptoms of leek wilt: in the hot season, when it clears up after rain, it may break out within 2-3 hours. The middle part of the leaf or the tip of the leaf that touches the ground shows a water scald-like symptom, which occurs in all leaves in severe cases, and then dies completely. Although the diseased root plant can germinate new plants, sometimes the germinated new plants will continue to suffer from the disease and can not recover until after autumn. However, the yield and quality of leek have been seriously affected. Therefore, it is necessary to prevent and control it in time so as not to cause huge losses. Prevention and control methods: the incidence of strong leek plants is relatively mild, in management, measures should be taken to prevent overgrowth of plants, enhance disease resistance, timely drainage after rain, and quickly irrigate well water immediately after hot and boring rain. During the onset of the disease, use 75% chlorothalonil wettable powder 600 times or 58% metalaxyl manganese zinc wettable powder 500 times, spray once every 5-7 days, spray 2 times 3 times.