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Use of a Grower Survey for Estimating Weed Problems

Published online by Cambridge University Press:  12 June 2017

Mark M. Loux  and
Mary Ann Berry
Mark M. Loux
Affiliation:
Dep. Agron. and Sys. Prog., Ohio Coop. Ext. Serv., Ohio State Univ., Columbus 43210
Mary Ann Berry
Affiliation:
Dep. Agron. and Sys. Prog., Ohio Coop. Ext. Serv., Ohio State Univ., Columbus 43210
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Abstract

A random mail survey of Ohio growers was conducted to determine the geographic distribution of weeds across Ohio and the influence of production practices on the severity of agronomic weed problems. Statewide, the ten most severe weed problems, in descending order, were Canada thistle > foxtail spp. > velvetleaf = common ragweed > common cocklebur > giant ragweed = annual morningglory spp. > quackgrass = common lambsquarters = Pennsylvania smartweed. Distribution of most weeds varied geographically. Infestations of common and honeyvine milkweeds, hemp dogbane, and tree seedlings increased as tillage was reduced. Infestations of common cocklebur and common ragweed decreased as tillage was reduced. As crop rotation became more diverse, infestations of velvetleaf, common cocklebur, giant ragweed, Pennsylvania smartweed, and jimsonweed decreased. Where rotations included forage or hay crops, infestations of large crabgrass, common chickweed, wild carrot, and common dandelion increased.

Keywords

Wild carrot, Daucus carota L. ♯ DAUCAcommon chickweed, Stellaria media (L.) Vill. ♯ STEMEcommon cocklebur, Xanthium strumarium L. ♯ XANSTlarge crabgrass, Digitaria sanguinalis (L.) Scop. ♯ DIGSAcommon dandelion, Taraxacum officinale Weber in Wiggers. ♯ TAROFhemp dogbane, Apocynum cannabinum L. ♯ APCCAfoxtail spp., Setaria spp.jimsonweed, Datura stramonium L. ♯ DATSTcommon lambsquarters, Chenopodium album L. ♯ CHEALcommon milkweed, Asclepias syriaca L. ♯ ASCSYhoneyvine milkweed, Ampelamus albidus (Nutt.) Britt. ♯ AMPALmorningglory spp., Ipomoea spp.quackgrass, Elytrigia repens (L.) Nevski. ♯ AGRREcommon ragweed, Ambrosia artemisiifolia L. ♯ AMBELgiant ragweed, Ambrosia trifida L. ♯ AMBTRPennsylvania smartweed, Polygonum pensylvanicum L. ♯ POLPYCanada thistle, Cirsium arvense (L.) Scop. ♯ CIRARvelvetleaf, Abutilon theophrasti Medicus. ♯ ABUTHWeed distributionweed surveyOhio weeds
Type
Education
Information
Weed Technology , Volume 5 , Issue 2 , June 1991 , pp. 460 - 466
Copyright
Copyright © 1991 Weed Science Society of America 

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References

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