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Anthracnose on almond in Australia:disease progress and inoculum sources of Colletotrichum acutatum
Year:
2014
Authors :
Shtienberg, Dan
;
.
Volume :
139
Co-Authors:
McKay, S.F., South Australian Research and Development Institute, GPO Box 397, Adelaide, 5001 SA, United States, School of Agriculture, Food and Wine, The University of Adelaide, Waite Campus, PMB 1, Glen, Osmond, SA, 5064, Australia
Shtienberg, D., Department of Plant Pathology and Weed Research, ARO, The Volcani Center, PO Box 6, Bet Dagan, 650250, Israel
Sedgley, M., University of New England, Armidale, 2350, Australia
Scott, E.S., School of Agriculture, Food and Wine, The University of Adelaide, Waite Campus, PMB 1, Glen, Osmond, SA, 5064, Australia
Facilitators :
From page:
773
To page:
783
(
Total pages:
11
)
Abstract:
Anthracnose, caused by Colletotrichum acutatum, is an important disease of almond and has caused significant economic losses in California, Israel and Australia. Anthracnose development was monitored for three growing seasons in an almond orchard in South Australia on two almond cultivars, Price and Nonpareil, with up to 80 % of fruit affected in 2004. Lesions, typical of anthracnose, formed on young developing fruit and symptoms continued to appear until the fruit were ca 20 mm long, after which no further lesions developed. Symptoms were observed on leaves, woody tissue showed signs of dieback, but blossom blight was not observed. Maximum disease incidenceperfor, man and Relative Area Under the Disease Progress Curve (RAUDPC) were significantly larger for Price than Nonpareil for each season, but differences in the apparent rates of infection for both cultivars were insignificant for the three growing seasons. The apparent rates of infection were correlated with rainfall and daily temperature for the three years combined but there was no correlation between maximum disease incidence or RAUDPC and these environmental parameters. Considerably more mummified fruit remained on the trees of cv. Price than Nonpareil each year; however, there was no correlation between the number of mummified fruit in one season and maximum disease incidence, RAUDPC or apparent rate of infection, in the following season. C. acutatum was recovered from mummified fruit, peduncles and bark, from both Price and Nonpareil, every month throughout a year-long sampling period. C. acutatum was also recovered from asymptomatic leaves, fruit, bark, buds and blossom, however, less frequently and at lower rates than from mummified fruit and peduncles. Recovery was consistently greater from Price than from Nonpareil for all tissues. © 2014 Koninklijke Nederlandse Planteziektenkundige Vereniging.
Note:
Related Files :
Anthracnose
Australia
deciduous tree
disease incidence
epidemiology
Inoculation
symptom
Show More
Related Content
More details
DOI :
10.1007/s10658-014-0431-8
Article number:
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
31448
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 01:02
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Scientific Publication
Anthracnose on almond in Australia:disease progress and inoculum sources of Colletotrichum acutatum
139
McKay, S.F., South Australian Research and Development Institute, GPO Box 397, Adelaide, 5001 SA, United States, School of Agriculture, Food and Wine, The University of Adelaide, Waite Campus, PMB 1, Glen, Osmond, SA, 5064, Australia
Shtienberg, D., Department of Plant Pathology and Weed Research, ARO, The Volcani Center, PO Box 6, Bet Dagan, 650250, Israel
Sedgley, M., University of New England, Armidale, 2350, Australia
Scott, E.S., School of Agriculture, Food and Wine, The University of Adelaide, Waite Campus, PMB 1, Glen, Osmond, SA, 5064, Australia
Anthracnose on almond in Australia:disease progress and inoculum sources of Colletotrichum acutatum
Anthracnose, caused by Colletotrichum acutatum, is an important disease of almond and has caused significant economic losses in California, Israel and Australia. Anthracnose development was monitored for three growing seasons in an almond orchard in South Australia on two almond cultivars, Price and Nonpareil, with up to 80 % of fruit affected in 2004. Lesions, typical of anthracnose, formed on young developing fruit and symptoms continued to appear until the fruit were ca 20 mm long, after which no further lesions developed. Symptoms were observed on leaves, woody tissue showed signs of dieback, but blossom blight was not observed. Maximum disease incidenceperfor, man and Relative Area Under the Disease Progress Curve (RAUDPC) were significantly larger for Price than Nonpareil for each season, but differences in the apparent rates of infection for both cultivars were insignificant for the three growing seasons. The apparent rates of infection were correlated with rainfall and daily temperature for the three years combined but there was no correlation between maximum disease incidence or RAUDPC and these environmental parameters. Considerably more mummified fruit remained on the trees of cv. Price than Nonpareil each year; however, there was no correlation between the number of mummified fruit in one season and maximum disease incidence, RAUDPC or apparent rate of infection, in the following season. C. acutatum was recovered from mummified fruit, peduncles and bark, from both Price and Nonpareil, every month throughout a year-long sampling period. C. acutatum was also recovered from asymptomatic leaves, fruit, bark, buds and blossom, however, less frequently and at lower rates than from mummified fruit and peduncles. Recovery was consistently greater from Price than from Nonpareil for all tissues. © 2014 Koninklijke Nederlandse Planteziektenkundige Vereniging.
Scientific Publication
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