Evaluation of chemical and biological treatments for control of Chondrostereum purpureum infection of pruning wounds in willows, apples, and peaches

Twenty-five wound dressing compounds were screened for control of Chondrostereum purpureum infection of pruning wounds on willows (Salix spp.), apples (Malus domestica), and golden queen peaches (Prunus persica). None were completely effective but products giving best control were: Garrison; Shell p...

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Bibliographic Details
Published in:New Zealand journal of crop and horticultural science 1997-03, Vol.25 (1), p.19-31
Main Authors: Spiers, A. G., Brewster, D. T.
Format: Article
Language:English
Subjects:
Chondrostereum purpureum
fruit trees
Malus domestica
Prunus persica
Salix
silverleaf
Trichoderma
Trichoderma viride
willows
wound dressings
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Summary:Twenty-five wound dressing compounds were screened for control of Chondrostereum purpureum infection of pruning wounds on willows (Salix spp.), apples (Malus domestica), and golden queen peaches (Prunus persica). None were completely effective but products giving best control were: Garrison; Shell pruning grease; and cyproconazole + iodocarb. C. purpureum infection with Nectec Liquid and copper oxychloride treatments was significantly (P > 0.05) greater than the control indicating a reduced host resistance either directly or by elimination of antagonists. Application of the biocontrol fungus Trichoderma viride to wounds failed to give significant (P > 0.05) control of C. purpureum infection in willows and peaches. Scanning electron microscopy of field exposed wound dressings revealed considerable differences in film integrity with fissures, pores, and fungal hyphae evident.
ISSN:0114-0671
0014-0671
1175-8783
DOI:10.1080/01140671.1997.9513983