Evaluation of a decision support strategy for the control of powdery mildew (Erysiphe necator [Schw.] Burr.) in grapevine in the central region of Chile - Inria - Institut national de recherche en sciences et technologies du numérique Accéder directement au contenu
Article Dans Une Revue Pest Management Science Année : 2017

Evaluation of a decision support strategy for the control of powdery mildew (Erysiphe necator [Schw.] Burr.) in grapevine in the central region of Chile

Résumé

BACKGROUND: The primary strategy to control powdery mildew in Chilean vineyards involves periodic fungicide spraying, which may lead to many environmental and human health risks. This study aimed to implement and evaluate the effectiveness and economic feasibility of a novel Decision Support Strategy (DSS) to limit the number of treatments against this pathogen. An experiment was conducted between the 2010 and 2013 seasons in two irrigated vine fields, one containing a cultivar of Cabernet Sauvignon (CS) and another of Chardonnay (CH). RESULTS: The results showed that the DSS effectively controlled powdery mildew in CS and CH vine fields as evidenced by a disease severity lower than 3%, which was lower than that observed in untreated vines (approximately 10% and 40 % for CS and CH, respectively). The DS strategy required the application of only 2-3 fungicide treatments per season in key vine phenological stages, and the cost fluctuated between US $ 322 and 415 per hectare, which was 40 to 60 % cheaper than the traditional strategy employed by vine growers. CONCLUSION: The Decision Support Strategy evaluated in this trial allows a good control of powdery mildew for various types of epidemics with an early and late initiation.
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Dates et versions

hal-01605020 , version 1 (26-05-2020)

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Héctor Valdés-Gómez, Miguel Araya-Alman, Carolina Pañitrur-de La Fuente, Nicolás Verdugo-Vásquez, Mauricio Lolas, et al.. Evaluation of a decision support strategy for the control of powdery mildew (Erysiphe necator [Schw.] Burr.) in grapevine in the central region of Chile. Pest Management Science, 2017, 73 (9), pp.1813-1821. ⟨10.1002/ps.4541⟩. ⟨hal-01605020⟩
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