Timing of infection and development of alternaria diseases in the canopy of apple trees

Harteveld, D. O. C., Akinsanmi, O. A., Chandra, K. and Drenth, A. (2014) Timing of infection and development of alternaria diseases in the canopy of apple trees. Plant Disease, 98 3: 401-408. doi:10.1094/PDIS-06-13-0676-RE


Author Harteveld, D. O. C.
Akinsanmi, O. A.
Chandra, K.
Drenth, A.
Title Timing of infection and development of alternaria diseases in the canopy of apple trees
Journal name Plant Disease   Check publisher's open access policy
ISSN 0191-2917
1943-7692
Publication date 2014-03
Year available 2014
Sub-type Article (original research)
DOI 10.1094/PDIS-06-13-0676-RE
Open Access Status
Volume 98
Issue 3
Start page 401
End page 408
Total pages 8
Place of publication St. Paul, MN, United States
Publisher American Phytopathological Society
Collection year 2015
Language eng
Formatted abstract
Alternaria leaf blotch and fruit spot of apple caused by Alternaria spp. cause annual losses to the Australian apple industry. Erratic control using protectant fungicides is often experienced and may be due to the lack of understanding of the timing of infection and epidemiology of the diseases. We found that Alternaria leaf blotch infection began about 20 days after bloom (DAB) and the highest disease incidence occurred from 70 to 110 DAB. Alternaria fruit spot infection occurred about 100 DAB in the orchard. Fruit inoculations in planta showed that there was no specific susceptible stage of fruit. Leaves and fruit in the lower canopy of trees showed higher levels of leaf blotch and fruit spot incidence than those in the upper canopy and the incidence of leaf blotch in shoot leaves was higher than in spur leaves. Temperature, relative humidity, and rainfall affected leaf blotch and fruit spot incidence. The gained knowledge on the timing of infection and development of disease may aid in the development of more effective disease management strategies.
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Queensland Alliance for Agriculture and Food Innovation
Official 2015 Collection
 
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