Growth regulator effects of propiconazole on redroot pigweed (Amaranthus retroflexus)

Bradley D. Hanson, Carol A. Mallory-Smith, Bill D. Brewster, Laura A. Wendling, Donald C. Thill

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)

Abstract

Nonfungicidal effects of agricultural fungicides on crop plants have been reported previously; however, there are few reports of nontarget effects of fungicides on weedy species. Field research trials in Oregon demonstrated that the growth of several broadleaf weeds was reduced after multiple applications of the fungicide propiconazole. Greenhouse experiments confirmed that pre- emergence applications of propiconazole reduced the biomass accumulation of several common broadleaf and grass weeds 15 to 63%. Laboratory experiments were performed on redroot pigweed, the most sensitive species, to examine the effects of propiconazole on germination and early seedling growth. Redroot pigweed germination and total seedling length (root plus shoot) were reduced at propiconazole concentrations above 37 and 0.36 mg/L, respectively. Growth-regulating effects of fungicides such as propiconazole on the germination and early growth of weeds may contribute to integrated weed management, especially when adequate moisture ensures the presence of germinating seeds and small seedlings throughout the growing season.

Original languageEnglish
Pages (from-to)777-781
Number of pages5
JournalWeed Technology
Volume17
Issue number4
DOIs
Publication statusPublished - 1 Oct 2003
MoE publication typeA1 Journal article-refereed

Fingerprint

propiconazole
Amaranthus retroflexus
growth regulators
fungicides
broadleaf weeds
germination
integrated weed management
grass weeds
seedlings
greenhouse experimentation
pesticide application
seedling growth
biomass production
weeds
growing season
shoots
crops
seeds

Keywords

  • Fungicide
  • Lolium multiflorum
  • LOLMU
  • Nontarget effects
  • Poa annua
  • POAAN
  • Senecio vulgaris
  • SENVU
  • Sterol biosynthesis inhibitor

Cite this

Hanson, Bradley D. ; Mallory-Smith, Carol A. ; Brewster, Bill D. ; Wendling, Laura A. ; Thill, Donald C. / Growth regulator effects of propiconazole on redroot pigweed (Amaranthus retroflexus). In: Weed Technology. 2003 ; Vol. 17, No. 4. pp. 777-781.
@article{a5d3b1bd944d4b4aba100062434547f0,
title = "Growth regulator effects of propiconazole on redroot pigweed (Amaranthus retroflexus)",
abstract = "Nonfungicidal effects of agricultural fungicides on crop plants have been reported previously; however, there are few reports of nontarget effects of fungicides on weedy species. Field research trials in Oregon demonstrated that the growth of several broadleaf weeds was reduced after multiple applications of the fungicide propiconazole. Greenhouse experiments confirmed that pre- emergence applications of propiconazole reduced the biomass accumulation of several common broadleaf and grass weeds 15 to 63{\%}. Laboratory experiments were performed on redroot pigweed, the most sensitive species, to examine the effects of propiconazole on germination and early seedling growth. Redroot pigweed germination and total seedling length (root plus shoot) were reduced at propiconazole concentrations above 37 and 0.36 mg/L, respectively. Growth-regulating effects of fungicides such as propiconazole on the germination and early growth of weeds may contribute to integrated weed management, especially when adequate moisture ensures the presence of germinating seeds and small seedlings throughout the growing season.",
keywords = "Fungicide, Lolium multiflorum, LOLMU, Nontarget effects, Poa annua, POAAN, Senecio vulgaris, SENVU, Sterol biosynthesis inhibitor",
author = "Hanson, {Bradley D.} and Mallory-Smith, {Carol A.} and Brewster, {Bill D.} and Wendling, {Laura A.} and Thill, {Donald C.}",
year = "2003",
month = "10",
day = "1",
doi = "10.1614/WT02-162",
language = "English",
volume = "17",
pages = "777--781",
journal = "Weed Technology",
issn = "0890-037X",
publisher = "Cambridge University Press",
number = "4",

}

Growth regulator effects of propiconazole on redroot pigweed (Amaranthus retroflexus). / Hanson, Bradley D.; Mallory-Smith, Carol A.; Brewster, Bill D.; Wendling, Laura A.; Thill, Donald C.

In: Weed Technology, Vol. 17, No. 4, 01.10.2003, p. 777-781.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Growth regulator effects of propiconazole on redroot pigweed (Amaranthus retroflexus)

AU - Hanson, Bradley D.

AU - Mallory-Smith, Carol A.

AU - Brewster, Bill D.

AU - Wendling, Laura A.

AU - Thill, Donald C.

PY - 2003/10/1

Y1 - 2003/10/1

N2 - Nonfungicidal effects of agricultural fungicides on crop plants have been reported previously; however, there are few reports of nontarget effects of fungicides on weedy species. Field research trials in Oregon demonstrated that the growth of several broadleaf weeds was reduced after multiple applications of the fungicide propiconazole. Greenhouse experiments confirmed that pre- emergence applications of propiconazole reduced the biomass accumulation of several common broadleaf and grass weeds 15 to 63%. Laboratory experiments were performed on redroot pigweed, the most sensitive species, to examine the effects of propiconazole on germination and early seedling growth. Redroot pigweed germination and total seedling length (root plus shoot) were reduced at propiconazole concentrations above 37 and 0.36 mg/L, respectively. Growth-regulating effects of fungicides such as propiconazole on the germination and early growth of weeds may contribute to integrated weed management, especially when adequate moisture ensures the presence of germinating seeds and small seedlings throughout the growing season.

AB - Nonfungicidal effects of agricultural fungicides on crop plants have been reported previously; however, there are few reports of nontarget effects of fungicides on weedy species. Field research trials in Oregon demonstrated that the growth of several broadleaf weeds was reduced after multiple applications of the fungicide propiconazole. Greenhouse experiments confirmed that pre- emergence applications of propiconazole reduced the biomass accumulation of several common broadleaf and grass weeds 15 to 63%. Laboratory experiments were performed on redroot pigweed, the most sensitive species, to examine the effects of propiconazole on germination and early seedling growth. Redroot pigweed germination and total seedling length (root plus shoot) were reduced at propiconazole concentrations above 37 and 0.36 mg/L, respectively. Growth-regulating effects of fungicides such as propiconazole on the germination and early growth of weeds may contribute to integrated weed management, especially when adequate moisture ensures the presence of germinating seeds and small seedlings throughout the growing season.

KW - Fungicide

KW - Lolium multiflorum

KW - LOLMU

KW - Nontarget effects

KW - Poa annua

KW - POAAN

KW - Senecio vulgaris

KW - SENVU

KW - Sterol biosynthesis inhibitor

UR - http://www.scopus.com/inward/record.url?scp=33645382171&partnerID=8YFLogxK

U2 - 10.1614/WT02-162

DO - 10.1614/WT02-162

M3 - Article

VL - 17

SP - 777

EP - 781

JO - Weed Technology

JF - Weed Technology

SN - 0890-037X

IS - 4

ER -