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Hogpotato (Hoffmanseggia glauca) Control with Herbicides and Rotational Crop Response

Published online by Cambridge University Press:  12 June 2017

R. Brent Westerman ,
Don S. Murray  and
Eric P. Castner
R. Brent Westerman
Affiliation:
Dep. Agron., Okla. State Univ., Stillwater, OK 74078
Don S. Murray
Affiliation:
Dep. Agron., Okla. State Univ., Stillwater, OK 74078
Eric P. Castner
Affiliation:
Dep. Agron., Okla. State Univ., Stillwater, OK 74078
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Abstract

Three field experiments were conducted in 1987 through 1989 to evaluate hogpotato control and rotational crop response resulting from applications of five herbicides. At the end of the first year, triclopyr and imazapyr controlled hogpotato late-season as high as 87 and 94%, respectively. Following a sequential application in 1988, triclopyr and imazapyr controlled 94 and 100% of hogpotato, respectively, during the 1989 growing season. Hogpotato biomass, collected at the termination of the experiments, was reduced by all treatments at all locations except at Altus where dicamba was applied in 1987 followed by a spot application of glyphosate in 1988. Soils from these experiments were bioassayed for residual herbicide activity using three potential rotational crop species. Tebuthiuron and imazapyr caused the greatest biomass reductions with cotton and wheat being the most sensitive species to these herbicides.

Keywords

Dicamba, 3,6-dichloro-2-methoxybenzoic acidglyphosate, N(phosphonomethyl)glycineimazapyr, (+)-2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-3-pyridinecarboxylic acidtebuthiuron, N-[5-(1,1-dimethylethyl)-1,3,4-thiadiazol-2-yl]-N,N′dimethylureatriclopyr, [(3,5,6-trichloro-2-pyridinyl)oxy]acetic acidhogpotato, Hoffmanseggia glauca (Ortega) Eifert # HOFDEcotton, Gossypium hirsutum L.wheat, Triticum aestivum L.Soilresidualbioassaydicambaglyphosateimazapyrtebuthiurontriclopyr2,4-DHoffmanseggia densifloraSorghum bicolorHOFDE
Type
Research
Information
Weed Technology , Volume 7 , Issue 3 , September 1993 , pp. 650 - 656
Copyright
Copyright © 1993 by the Weed Science Society of America 

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References

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