Evaluation of field control effects of new fungicides against grape downy mildew

doi:10.14088/j.cnki.issn0439-8114.2025.09.013

Abstract

Abstract: To clarify the field control effects of novel fungicides against grape downy mildew, a field experiment was conducted to compare the control effects of five test fungicides: 10% oxathiapiprolin dispersible oil suspension, 10% picarbutrazox suspension concentrate, 20% metalaxyl-M suspension emulsion, 25% famoxadone suspension concentrate, and 30% metalaxyl-M + famoxadone suspension emulsion. The results showed that 10% oxathiapiprolin dispersible oil suspension exhibited the highest control efficacy, exceeding 80%, and could be recommended for controlling grape downy mildew. The other four fungicides also demonstrated control efficacies above 70%. Among these four, 30% metalaxyl-M + famoxadone suspension emulsion showed better performance than 10% picarbutrazox suspension concentrate, although the difference was not statistically significant.

Key words: control effects, fungicide, field experiment, grape downy mildew, disease index

CLC Number:

S436.631.1

WANG Hui, WANG Gan, ZHANG Wei, FAN An-ran, LIU Mei. Evaluation of field control effects of new fungicides against grape downy mildew[J]. HUBEI AGRICULTURAL SCIENCES, 2025, 64(9): 80-83.

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