New Zealand Journal of Crop and Horticultural Science abstracts
Evaluation of chemical and biological treatments for control
of Chondrostereum purpureum infection of pruning wounds
in willows, apples, and peaches
A. G. SPIERS
D. T. BREWSTER
The Horticultural and Food Research
Institute of New Zealand
Private Bag 11 030
Palmerston North, New Zealand
Abstract 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.
Keywords willows; silverleaf; Chondrostereum
purpureum; wound dressings; Trichoderma; fruit trees
New Zealand Journal of Crop and Horticultural Science, 1997, Vol. 25:
19-31
0114-0671/97/2501-0019 $2.50/0 (c) The Royal Society of New Zealand
1997
PDF file of entire paper: medium quality (3329K); (scanned from paper original: notes about this process)
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