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Novel phosphite and nutrient application to control Phytophthora cinnamomi disease

Scott, P.M., Barber, P.A. and Hardy, G.E.St.J. (2015) Novel phosphite and nutrient application to control Phytophthora cinnamomi disease. Australasian Plant Pathology, 44 (4). pp. 431-436.

Link to Published Version: http://dx.doi.org/10.1007/s13313-015-0365-4
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Abstract

Systemic treatment of stems with injections of phosphite liquid and novel soluble capsule implants of phosphite, PHOSCAP® (phosphorous, potassium, iron, manganese, zinc, boron, copper, magnesium and molybdenum) and MEDICAP MD® (nitrogen, phosphorous, potassium, iron, manganese, and zinc), were applied to Banksia grandis and Eucalyptus marginata trees to control Phytophthora cinnamomi. Four weeks after treatment application, excised branches were under-bark inoculated with P. cinnamomi. In B. grandis, phosphite implants and liquid injections significantly reduced lesion length compared to the control, and MEDICAP MD® implants; however, there was no significant difference in lesion length between trees treated with phosphite implants and liquid injections and PHOSCAP implants. In E. marginata, phosphite implants and liquid injections significantly reduced lesion length compared to the control, PHOSCAP® and MEDICAP MD® implants. In B. grandis and E. marginata, PHOSCAP® and MEDICAP MD® implants reduced the average lesion length compared to the control; however, the interactions were not significant. Results show that both liquid phosphite injections and novel phosphite implants are effective at controlling lesion extension in B. grandis and E. marginata, caused by P. cinnamomi. Further work is required to determine if nutrient application reduces Phytophthora disease through improving plant health.

Publication Type: Journal Article
Murdoch Affiliation: Centre for Phytophthora Science and Management
Centre of Excellence for Climate Change and Forest and Woodland Health
School of Veterinary and Life Sciences
Publisher: Springer-Verlag
Copyright: © 2015, Australasian Plant Pathology Society Inc.
URI: http://researchrepository.murdoch.edu.au/id/eprint/28168
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