TY - JOUR
T1 - Yield loss estimation and pathogen identification from Botryosphaeria dieback in vineyards of Central Chile over two growing seasons
AU - Larach, Alejandra
AU - Torres, Carolina
AU - Riquelme, Natalia
AU - Valenzuela, Miryam
AU - Salgado, Eduardo
AU - Seeger, Michael
AU - BESOAIN CANALES, XIMENA ALEJANDRA
N1 - Funding Information:
The authors thank Professor Bernardo A. Latorre for his scientific collaboration in Carolina Torres' master's thesis research; the companies and professionals that allowed access to vineyards; Aldo Salinas, for his support in laboratory activities; and Iv?n Cort?s, for his collaboration in field sampling. This study was supported by a CONICYT PhD fellowship to Alejandra Larach, Phytopathology Laboratory of the PUCV and CONI-CYT PIA Anillo de Investigaci?n en Ciencia y Tecnolog?a GAMBIO ACT172128.
Publisher Copyright:
© 2020 A. Larach, C. Torres, N. Riquelme, M. Valenzuela, E. Salgado, M. Seeger, X. Besoain. All Rights Reserved.
Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2020/1
Y1 - 2020/1
N2 - Dieback symptoms have been increasingly reported in Chilean vineyards over recent years. Although there have been studies on Botryosphaeriaceae species and associated trunk disease incidence and severity in table grape-producing vineyards, their impacts on ‘Cabernet Sauvignon', the most planted red wine grape in Chile, is unknown. This study determines the fungus species, incidence, disease severity, and yield losses associated with Botryosphaeria dieback in Chilean ‘Cabernet Sauvignon' vineyards. Nine vineyards were surveyed during two growing seasons (2010 and 2018), and symptomatic wood samples were taken. Total potential production and yield losses were estimated from spur counts (2010) from harvested vines (2018) with different degrees of infection. Overall disease incidence was 87% in 2010 and 84% in 2018. Severity was 49% in 2010 and 47% in 2018. Yield losses were 39% in 2010 and 46% in 2018. Diplodia seriata was the most prevalent fungus isolated from symptomatic plants in both growing seasons. This study highlights the impacts of grapevine trunk diseases in vineyards in Central Chile, and indicates the need for improved disease management strategies.
AB - Dieback symptoms have been increasingly reported in Chilean vineyards over recent years. Although there have been studies on Botryosphaeriaceae species and associated trunk disease incidence and severity in table grape-producing vineyards, their impacts on ‘Cabernet Sauvignon', the most planted red wine grape in Chile, is unknown. This study determines the fungus species, incidence, disease severity, and yield losses associated with Botryosphaeria dieback in Chilean ‘Cabernet Sauvignon' vineyards. Nine vineyards were surveyed during two growing seasons (2010 and 2018), and symptomatic wood samples were taken. Total potential production and yield losses were estimated from spur counts (2010) from harvested vines (2018) with different degrees of infection. Overall disease incidence was 87% in 2010 and 84% in 2018. Severity was 49% in 2010 and 47% in 2018. Yield losses were 39% in 2010 and 46% in 2018. Diplodia seriata was the most prevalent fungus isolated from symptomatic plants in both growing seasons. This study highlights the impacts of grapevine trunk diseases in vineyards in Central Chile, and indicates the need for improved disease management strategies.
KW - disease severity
KW - Vitis vinifera
KW - yield loss
KW - ‘Cabernet Sauvignon' disease incidence
UR - http://www.scopus.com/inward/record.url?scp=85102024050&partnerID=8YFLogxK
U2 - 10.14601/Phyto-11235
DO - 10.14601/Phyto-11235
M3 - Article
AN - SCOPUS:85102024050
VL - 59
SP - 537
EP - 548
JO - Phytopathologia Mediterranea
JF - Phytopathologia Mediterranea
SN - 0031-9465
IS - 3
ER -