September 10, 2025Open Life SciencesOpen Access

Comparative efficiency and residue levels of spraying programs against powdery mildew in grape varieties

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Observational analysis shows the UC Davis model reduces powdery mildew residue in grape varieties, indicating a more efficient use of fungicides.

The UC Davis risk index model significantly reduced disease incidence below 5% in grape clusters, enhancing crop safety.
Residue levels of thiophanate-methyl exceeded EU limits for both grape varieties, highlighting a critical concern for food safety.
Three control strategies were evaluated over two years using two grape varieties, allowing for comparison of effectiveness.
Using alternating fungicides can minimize pesticide residue issues and reduce the likelihood of resistance among pathogens.

Kaya et al. (2025) studied this question.

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Observational analysis shows the UC Davis model reduces powdery mildew residue in grape varieties, indicating a more efficient use of fungicides.