Chemical control of Fusarium oxysporum

1. Usually adding SH medium additive can control Fusarium pathogen.

2. Choose 50% Baolizan wettable powder, 4000 times the daily average temperature below 25 ℃, 6000 times the daily average temperature below 28 ℃, once every 7 days, the whole plant sprinkler irrigation.

3. Choose 25% poker emulsion 20O0 times mixed with 1000 times rotten wettable powder, once every 7 days, sprinkler irrigation of the whole plant.

4. Choose 31.60 Befen Pokra water suspension 2000 times every 7 days, sprinkler irrigation of the whole plant.

5. 25.9% Draclol emulsion 3O00 times every 7 days, sprinkler irrigation of the whole plant.

6. Choose 80% manganese Naipu wettable powder 400 times every 7 days, sprinkler irrigation of the whole plant.

Other causes of occurrence

The survival time of Fusarium pathogens in the medium is very long, often more than one year, and the more serious the acidification of the medium, the higher the probability of occurrence, and the application of ammonium nitrogen fertilizer is also easy to occur. Mechanical injuries such as harmful root nematodes and mites in the medium are also easy to occur. If the national orchid plant is infected by Fusarium pathogen, it is a very difficult disease to treat. Fusarium pathogens live in the medium. when they encounter root exudates, the host will germinate on the root exudates and expand into the human plant, hindering the normal function of the vessel, resulting in withering, drying up and death. Therefore, the national orchid cultivation managers usually strengthen the selection of the medium and maintain its pH outside the neutral, and strengthen the prevention and control of chemicals, so as to avoid the harm of Fusarium pathogens.

Wang Huaiyin