Biological control of botrytis bunch rot in organic wine grapes with the yeast antagonistCandida sakeCPA-1

2012 ◽  
Vol 62 (3) ◽  
pp. 510-519 ◽  
Author(s):  
C. Calvo-Garrido ◽  
P. A. G. Elmer ◽  
I. Viñas ◽  
J. Usall ◽  
E. Bartra ◽  
...  
Keyword(s):  
Biological Control ◽  
Wine Grapes ◽  
Bunch Rot ◽  
Organic Wine

scholarly journals Reduction of Botrytis cinerea Colonization of and Sporulation on Bunch Trash

Plant Disease ◽  
2020 ◽  
Vol 104 (3) ◽  
pp. 808-816 ◽  
Author(s):  
Giorgia Fedele ◽  
Elisa González-Domínguez ◽  
Melissa Si Ammour ◽  
Luca Languasco ◽  
Vittorio Rossi
Keyword(s):  
Biological Control ◽  
Botrytis Cinerea ◽  
Dna Content ◽  
Trichoderma Atroviride ◽  
Biological Control Agents ◽  
Early Season ◽  
Commercial Mixture ◽  
Berry Ripening ◽  
Bunch Rot ◽  
Sampling Times

Botrytis bunch rot (BBR) of grapevine, caused by Botrytis cinerea, is commonly managed by fungicide (FUN) sprays at flowering (A), at prebunch closure (B), at veraison (C), and before harvest. Applications at A, B, and C are recommended to reduce B. cinerea colonization of bunch trash and the production of conidia during berry ripening. The effects of these applications were previously evaluated as reductions in BBR severity at harvest rather than as reductions in bunch trash colonization and sporulation by B. cinerea. This study investigated the effects of FUNs (a commercial mixture of fludioxonil and cyprodonil), biological control agents (BCAs; Aureobasium pullulans and Trichoderma atroviride), and botanicals (BOTs; a commercial mixture of eugenol, geraniol, and thymol) applied at different timings (A, B, C, or ABC) compared with a nontreated control (NT) on B. cinerea bunch trash colonization and sporulation in vineyards. The ability of B. cinerea to colonize the bunch trash (as indicated by B. cinerea DNA content) and sporulate (as indicated by the number of conidia produced under optimal laboratory conditions) was highly variable, and this variability was higher between years (2015 to 2018) than among the three vineyards and three sampling times (i.e., 1 week after applications at A, B, and C). B. cinerea sporulation on bunch trash was significantly lower in plots treated with FUN than in NT in only 3 of 18 cases (3 vineyards × 2 years × 3 sampling times). FUN applications, however, significantly reduced B. cinerea colonization of bunch trash compared with NT; for colonization, BCA efficacy was similar to that of FUN, but BOT efficacy was variable. For all products, colonization reduction was the same with application at A versus ABC, meaning that the effect of an early season application lasted from flowering to 1 week after veraison. These results indicate that the early season control of B. cinerea is important to reduce the saprophytic colonization of bunch trash, especially when the risk of BBR is high.

scholarly journals Tools for accurate assessment of botrytis bunch rot (Botrytis cinerea) on wine grapes

2010 ◽  
Vol 63 ◽  
pp. 174-181 ◽  
Author(s):  
G.N. Hill ◽  
R.M. Beresford ◽  
K.J. Evans
Keyword(s):  
Mean Absolute Error ◽  
Computer Training ◽  
Absolute Error ◽  
Disease Assessment ◽  
Management Decision ◽  
Wine Grapes ◽  
Wine Quality ◽  
Decision Support Models ◽  
The Mean ◽  
Bunch Rot

Botrytis bunch rot (botrytis) can reduce grape yield and wine quality Standardised assessment methods are needed to allow greater precision in wine making and to allow the use of disease management decision support models in grape production This study developed a botrytis disease assessment key to assist the accuracy of visual disease assessment Associated computer training software designed to improve the accuracy of disease assessments was also developed and tested The mean absolute error in estimates of percentage botrytis severity was significantly (P

scholarly journals Mini munchers to control powdery mildew and botrytis bunch rot in grapes

2010 ◽  
Vol 63 ◽  
pp. 279-279
Author(s):  
K.S.H. Boyd-Wilson ◽  
S. Read ◽  
D.C. Mundy
Keyword(s):  
New Zealand ◽  
Disease Management ◽  
Powdery Mildew ◽  
Production Systems ◽  
Growing Season ◽  
Wine Industry ◽  
Wine Production ◽  
Apple Leaves ◽  
Bunch Rot ◽  
Organic Wine

The use of mycophagous (fungal feeding) invertebrates has potential to contribute to disease management in both organic and conventional wine production systems in New Zealand The New Zealand wine industry is actively working towards producing ultralow residue wines This involves removing all late season botrytis fungicide sprays from the vineyard spray programme In organic wine production systems in New Zealand the only products available to control powdery mildew and botrytis bunch rot are protectants In both these systems when fungicides are not available mycophagous invertebrates may reduce the amount of inoculum available to cause disease A survey of leaf material in 19 vineyards in Canterbury and Marlborough over the 20082009 growing season identified populations of beetles in two vineyards in sufficient numbers to justify further research In the laboratory fieldcollected beetles that were starved for 2 days fed on spores of Botrytis cinerea (botrytis bunch rot) growing on blackcurrant flowers Podosphaerea leucotricha (apple powdery mildew) on apple leaves and Erysiphe necator (grape powdery mildew) on grape leaves Beetles were identified as Aridius bifaciatus (Reitter) A nodifer (Westwood) and Cortinicara hirtalis (Broun)

Novel film-forming formulations of the biocontrol agent Candida sake CPA-1: biocontrol efficacy and performance at field conditions in organic wine grapes

2018 ◽  
Vol 75 (4) ◽  
pp. 959-968 ◽  
Author(s):  
Anna Carbó ◽  
Rosario Torres ◽  
Josep Usall ◽  
Anna Marín ◽  
Amparo Chiralt ◽  
...  
Keyword(s):  
Biocontrol Agent ◽  
Field Conditions ◽  
Wine Grapes ◽  
Biocontrol Efficacy ◽  
Film Forming ◽  
Organic Wine ◽  
And Performance ◽  
Candida Sake
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