Integrative statistical approaches to evaluate fungicide efficacy against Botrytis cinerea in the white grape variety Grenache Blanc

The present study evaluated the effectiveness of different fungicidal treatments against Botrytis cinerea in Vitis vinifera cv. Grenache blanc using agro-climatic data were obtained from the ERA5-Ag reanalysis dataset, providing high-resolution, bias-corrected meteorological variables. Bunches wetness duration was used as a key predictor of infection. Three treatments were tested: control (untreated variant), the synthetic fungicide combination fludioxonil + cyprodinil, and the biological formulation Bacillus amyloliquefaciens.