Fluazifop-p-butyl herbicide: Implications for germination, emergence and growth of Australian plant species

Rokich, Deanna P., Harma, Jack, Turner, Shane R., Sadler, Rohan J. and Tan, Beng H. (2009) Fluazifop-p-butyl herbicide: Implications for germination, emergence and growth of Australian plant species. Biological Conservation, 142 4: 850-869. doi:10.1016/j.biocon.2008.12.013


Author Rokich, Deanna P.
Harma, Jack
Turner, Shane R.
Sadler, Rohan J.
Tan, Beng H.
Title Fluazifop-p-butyl herbicide: Implications for germination, emergence and growth of Australian plant species
Journal name Biological Conservation   Check publisher's open access policy
ISSN 0006-3207
Publication date 2009-04-01
Year available 2009
Sub-type Article (original research)
DOI 10.1016/j.biocon.2008.12.013
Open Access Status Not yet assessed
Volume 142
Issue 4
Start page 850
End page 869
Total pages 20
Editor R. B. Primack
Place of publication Essex, United Kingdom; Amsterdam, The Netherlands
Publisher Elsevier
Language eng
Subject 050202 Conservation and Biodiversity
Abstract Five experiments were implemented to collect information related to the effects of fluazifop-p-butyl (active chemical in grass selective herbicides, Fusilade® and Fusilade Forte™) on seed germination, seedling emergence, growth and health of species native to southwest Australia (a grass and non-grasses), together with several co-occurring introduced species (grasses and a non-grass). Experiments investigated effects of herbicide concentrations, seed burial depths, seed-sowing times since herbicide application and application locations (foliage versus soil). Both herbicides, at half to quadruple strength of recommended field application concentrations, adversely affected development of native and introduced species, both grasses and non-grasses. Herbicidal effects were observed during the seed germination phase, and if germination had occurred, during seedling emergence and, finally, during plant establishment. However, effects were more pronounced after seed germination, particularly on development of seedlings and plants, with retardation and/or discoloration of either radicles or shoots. Not unexpectedly, seedlings from seeds buried deeper in the sand medium (20 mm) struggled to emerge. Both herbicides demonstrated residual characteristics by impeding seedling emergence and growth from seeds sown at various dates (up to maximum test duration of 3 weeks) following exposure of the sand medium to the herbicides. Further, herbicide application to sand only, produced effects on 5–6 months old plants that were similar as application to foliage only, demonstrating herbicide uptake from sand. While the findings support independent research, they contradict the purported herbicide characteristics by commercial sources – grass selective, post-emergent, non-residual, rapid breakdown and active through foliar application only. Implications of these herbicides for biodiversity conservation are discussed. © 2008 Published by Elsevier Ltd.
Keyword Fusilade (R)
Fusilade Forte™
Weeds
Seedling health
Spray drift
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Pharmacy Publications
 
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Created: Thu, 03 Sep 2009, 18:22:57 EST by Mr Andrew Martlew on behalf of Office of Sponsored Research