氟啶胺防治柑橘黑点病效果评价

氟啶胺是我国登记用于防治柑橘黑点病的药剂,但其对柑橘黑点病的防治效果还未见报道,评价氟啶胺的药效对生产上指导柑橘黑点病的防治有重要意义。本研究测定了氟啶胺对柑橘黑点病菌孢子萌发和菌丝生长的抑制效果及田间防效。结果显示氟啶胺对菌丝生长和孢子萌发的抑制效果均好于代森锰锌,但在大田试验中氟啶胺防治效果不稳定,受环境影响较大,添加矿物油能在一定程度上提高其防效。该结果表明氟啶胺对柑橘黑点病具有良好的防治潜力,可对其进行更细致的研究。

Evaluation of the effectiveness of fluazinam against citrus black spot

Fluazinam is a fungicide registered in China for the prevention and treatment of citrus black spot, but its effectiveness has not been reported. Evaluation of the effectiveness of fluazinam is important for production guidance. The inhibitory effect of fluazinam on spore germination and mycelial growth of Diaporthe citri was evaluated by laboratory experiments. The disease index was investigated in Field trials before harvest, and the relative effectiveness was calculated and statistical analysis was performed. The results showed that fluazinam showed a better inhibition against mycelial growth and spore germination than mancozeb in laboratory experiments. However, in the field experiment, the effect of fluazinam was unstable and affected by the environment. Adding mineral oil could partially improve its effectiveness. This result indicated that fluazinam had a good potential for controlling citrus black spot, but more detailed studies are needed.