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Walnut blight disease development on Guangxi walnuts


McNeil, DL, Walnut blight disease development on Guangxi walnuts, Acta Horticulturae, 17-22 August 2014, Brisbane, Australia, pp. 261-263. ISSN 0567-7572 (2016) [Refereed Conference Paper]

Copyright Statement

Copyright 2016 ISHS

DOI: doi:10.17660/ActaHortic.2016.1109.42


Walnut blight (Xanthomonas arboricola pv. juglandis) disease incidence was estimated on commercial plantings of presumed J. sigillata x Juglans regia hybrids in Guangxi (2013, near harvest; high expected disease pressure) and J. regia, J. sigillata and presumed J. sigillata x J. regia hybrids in Sassafras eastern Australia (2014, near harvest; moderate expected disease pressure). The disease incidence was compared to a model based on rainfall during leafing out developed earlier in Tasmania. The results indicated that in Sassafras the model worked well for J. regia and J. sigillata. However, in both Sassafras and Guangxi the levels of blight observed on the husks of near mature hybrids was well below that expected. These data are a preliminary suggestion that some J. sigillata x J. regia hybrids may contain useful resistance to walnut blight.

Item Details

Item Type:Refereed Conference Paper
Keywords:Xanthomonas, arboricola, juglandis, sigillata, regia, hybrid
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Horticultural production
Research Field:Horticultural crop protection (incl. pests, diseases and weeds)
Objective Division:Plant Production and Plant Primary Products
Objective Group:Horticultural crops
Objective Field:Tree nuts (excl. almonds and macadamias)
UTAS Author:McNeil, DL (Professor David McNeil)
ID Code:116908
Year Published:2016
Deposited By:Tasmanian Institute of Agriculture
Deposited On:2017-05-24
Last Modified:2018-07-20

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