Deposition and dissipation of three herbicides in foliage, litter, and soil of brushfields of southwest Oregon

Newton, Michael; Roberts, F. S.; Allen, Adrian; Kelpsas, Bruce; White, Diane E.; Boyd, Patricia T.

doi:10.1021/jf00092a052

Cited by 30 publications

(26 citation statements)

References 5 publications

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“…The greater unwanted mortality in our study may have resulted from the slightly higher application rate and sandier soils than in these two studies; Busse et al (2003) found, for example, that triclopyr was more lethal to ponderosa pine seedlings in sandy loam than clay loam soils. In other studies, triclopyr has been more persistent and transient than glyphosate (Newton et al, 1990;Thompson et al, 2000), with residues commonly detected outside treatment areas due to water run-off or litterfall from treated plants (Ando et al, 2003). Triclopyr residue increased in the forest floor for up to 39 days, and has taken 69 days to dissipate from mineral soil (Thompson et al, 2000).…”

Section: Treatment Methods Effects On Target Trees and Neighborsmentioning

confidence: 86%

Neighborhood size effects on mortality, growth and crown morphology of paper birch

Simard

Zimonick

2005

Forest Ecology and Management

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Section: Treatment Methods Effects On Target Trees and Neighborsmentioning

confidence: 86%

Neighborhood size effects on mortality, growth and crown morphology of paper birch

Simard

Zimonick

2005

Forest Ecology and Management

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“…Herbicide deposit is site-and application-technology specific; however, only about 75% of the a.i. applied during an operational treatment is generally recovered from a treatment site [Feng and Thompson (1989); Newton et al (1990); Thompson et al ( , 1997]. Therefore, only 12.5% of the total a.i.…”

Section: Mosses Lichens and Fungimentioning

confidence: 99%

“…Feng and Thompson (1989), Newton et al (1990), , and Thompson et al (1997) For personal use only. Lindgren and Sullivan 2001).…”

mentioning

confidence: 99%

Effects of herbicide treatments on biotic components in regenerating northern forests

Lautenschlager¹,

Sullivan²

2002

The Forestry Chronicle

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We reviewed literature, primarily since 1990, that documents effects of herbicide treatments on major biotic components in northern forested ecosystems. Vegetation changes are responsible for changes in all other biotic components. Non-conifer vegetation is commonly reduced for two to five years following broadcast herbicide treatments. Fungal components, however, seem relatively unaffected. Short-term vegetation reductions in cover, density, and related biomass, if they occur, are species and/or vegetation group specific; longer-term changes are linked to conifer stocking, site quality, and the ability of conifers to dominate treated sites. Herbicide treatments do not reduce, and may increase, stand-and landscape-level plant species richness. Those treatments seldom produce monocultures when used by foresters for boreal or boreal mixedwood management. The active ingredients in the herbicide products used in forestry in northern ecosystems have no direct effect on the general health (survival, growth, reproduction) of animals in treated areas. Specific, stand-level forest management practices, particularly effects of site preparation and conifer release, must be examined in relation to the landscape mosaic and the desired future forest conditions. At broad scales, across boreal and boreal mixedwood ecosystems, conifers have been consistently replaced by hardwoods since Europeans began harvesting timber from those ecosystems. Herbicides provide a safe, effective tool for restoring conifers in previously conifer-dominated ecosystems. Forest scientists presently have a reasonable understanding of effects of a variety of herbicide treatments on conifer growth and a variety of environmental components. However, they need to continually update that understanding relative to treatments (replicates, chemicals, combinations, or timing) that may be used in the future.Key words: amphibians, conifer release, deer, disturbance, environment, glyphosate, herbicides, invertebrates, landscape, moose, reptiles, site preparation, small mammals, songbirds, snowshoe hare, triclopyr, vegetation Nous avons révisé la littérature, principalement depuis 1990, qui documente les effets des traitements phytocides sur les principaux éléments biotiques dans les écosystèmes forestiers nordiques. Les modifications apportées à la végétation sont responsables des changements survenus chez tous les autres éléments biotiques. La végétation non-résineuse est habituellement réduite de deux à cinq ans suivant les traitements d'épandage généralisé de phytocides. Les composantes fongiques, cependant, ne semblent relativement pas affectées. Les réductions à court terme de la végétation au niveau du couvert, de la densité et de la biomasse impliquée, si tel est le cas, touchent spécifiquement certaines espèces ou groupe de plantes; les changements à long terme sont reliés au nombre de semis de résineux, la qualité de la station et la capacité des résineux à dominer dans les sites traités. Les traitements phytocides ne réduisent pas, et pourraient accroîtr...

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“…Whisenant and McArthur (1989) treated several woody species in an Idaho forest with triclopyr BEE and reported that triclopyr residues in terminal branch and leaf segments of this vegetation continuously decreased with time. Newton et al (1990) reported that triclopyr dissipated more slowly in tanoak when applied as the BEE (half-life, 73.5-127.3 d) compared to the TEA salt (18.9-29.0 d). When triclopyr BEE was applied to pasture grass, the dissipation half-life for triclopyr was ~30 d over a 249-d period (Wi\cock et al 1991).…”

Section: Metabolism In Plantsmentioning

confidence: 99%

“…The slow dissipation of triclopyr in these pasture soils was attributed to the dry Oregon summer following the treatments. Newton et al (1990) applied triclopyr BEE (1.65 and 3.3 kg a.e. ha-I) and TEA (2.2 and 4.4 kg a.e.…”

Section: B Soilmentioning

confidence: 99%

Reviews of Environmental Contamination and Toxicology

2002

Reviews of Environmental Contamination and Toxicology

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Deposition and dissipation of three herbicides in foliage, litter, and soil of brushfields of southwest Oregon

Cited by 30 publications

References 5 publications

Neighborhood size effects on mortality, growth and crown morphology of paper birch

Neighborhood size effects on mortality, growth and crown morphology of paper birch

Effects of herbicide treatments on biotic components in regenerating northern forests

Reviews of Environmental Contamination and Toxicology

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