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- Title
Evaluation of a decision support strategy for the control of powdery mildew, Erysiphe necator (Schw.) Burr., in grapevine in the central region of Chile.
- Authors
Valdés Gómez, Héctor; Araya Alman, Miguel; Pañitrur De la Fuente, Carolina; Verdugo Vásquez, Nicolás; Lolas, Mauricio; Acevedo Opazo, César; Gary, Christian; Calonnec, Agnès
- Abstract
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 the other a cultivar 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 ha−1, which was 40-60% 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 epidemic with an early and late initiation. © 2017 Society of Chemical Industry
- Subjects
GRAPE powdery mildew disease; APPLICATION of agricultural chemicals; FUNGICIDES; GRAPE disease &; pest prevention; PUBLIC health; POWDERY mildew diseases; PREVENTION
- Publication
Pest Management Science, 2017, Vol 73, Issue 9, p1813
- ISSN
1526-498X
- Publication type
Article
- DOI
10.1002/ps.4541