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Herbicide Efficacy for Production of Container Ornamentals

Published online by Cambridge University Press:  12 June 2017

Lena B. Gallitano  and
Walter A. Skroch
Lena B. Gallitano
Affiliation:
Dep. Hort. Sci., Box 7609, North Carolina State Univ., Raleigh, NC 27695-7620
Walter A. Skroch
Affiliation:
Dep. Hort. Sci., Box 7609, North Carolina State Univ., Raleigh, NC 27695-7620
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Abstract

A study was conducted to evaluate efficacy of 17 PRE herbicides on seven weed species that are important competitors in container-grown ornamentals. Treatments included napropamide, metolachlor, acifluorfen, lactofen, oxyfluorfen, oryzalin, pendimethalin, prodiamine, trifluralin, isoxaben, oxadiazon, simazine and combination products. Control was evaluated by counting weed seedlings 42, 202, and 249 d after treatment. Some treatments provided nearly total control of less than 1.0 seedling per container at each rating over two years. Those treatments were: common groundsel—diphenyl ethers, isoxaben, oxadiazon, oxyfluorfen + oryzalin, and oxyfluorfen + pendimethalin; prostrate spurge—pendimethalin, prodiamine, prodiamine-ABD, trifluralin, oxadiazon, isoxaben + oryzalin, and methazole + prodiamine; common chickweed—isoxaben and isoxaben + oryzalin; hairy bittercress—oxyfluorfen, pendimethalin, prodiamine, prodiamine-ABE, oxadiazon, oxyfluorfen + oryzalin, oxyfluorfen + pendimethalin, and methazole + prodiamine; common ragweed—oxyfluorfen, prodiamine-ABD, methazole + prodiamine; Virginia pepperweed—lactofen, oxyfluorfen, oryzalin, pendimethalin, prodiamine, prodiamine-ABD, isoxaben, oxadiazon, oxyfluorfen + oryzalin, oryzalin + pendimethalin, isoxaben + oryzalin, and methazole + prodiamine; horseweed—oxyfluorfen, dinitroanilines, oxadiazon, oxyfluorfen + oryzalin, oxyfluorfen + pendimethalin, isoxaben + oryzalin, and methazole + prodiamine.

Keywords

Acifluorfen, 5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoic acidmethazole, 2-(3,4-dichlorophenyl)-4-methyl-1,2,4-oxadiazolidine-3,5-dioneoryzalin, 4-(dipropylamino)-3,5-dinitrobenzenesulfonamidesimazine, 6-chloro-N,N′-diethyl-1,3,5-triazine-2,4-diaminecommon chickweed, Stellaria media (L.) Vill. # STEMEcommon groundsel, Senecio vulgaris L. # SENVUcommon ragweed, Ambrosia artemisiifolia L. # AMBELhairy bittercress, Cardamine hirsuta L. # CARHIhorseweed, Conyza canadensis (L.) Cronq. # ERICAPreemergence herbicidesAmbrosia artemisiifoliaCardamine hirsutaConyza canadensisEuphorbia humistrataLepidium virginicumSenecio vulgarisStellaria mediaAMBELCARHIEPHHTERICALEPVISENVUSTEME
Type
Research
Information
Weed Technology , Volume 7 , Issue 1 , March 1993 , pp. 103 - 111
Copyright
Copyright © 1993 by the Weed Science Society of America 

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References

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