Effects of Different Fungicides Against Citrus Anthracnose in the Field
A field experiment was carried out for two consecutive years to determine the control effects of six different fungicides on citrus anthracnose,on the basis of which the effective and safe fungicides against citrus anthracnose were screened.The results showed that the control effects of difenoconazole·pyraclostrobin 40%microemulsion and pyraclostrobin·metiram 60%water dispersible granules on citrus fruit anthracnose were significantly higher than those of other fungicides for two consecutive years.The control effect had no significant difference between the two fungicides.Specifically,the control effects 21 days after the last application were 84.3%and 82.7%in 2022 and 81.3%and 80.0%in 2023,respectively.In addition,epoxiconazole 12.5%suspension concentrate,mancozeb 80%wettable powder,and azoxystrobin 25%suspension concentrate also showcased control effects on citrus anthracnose.These five fungicides could be used alternately in production to prevent Colletotrichum gloeosporioides from developing resistance to fungicides.
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