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Imidazolinone Herbicide Effects on Following Rotational Crops in Southern Alberta

Published online by Cambridge University Press:  12 June 2017

James R. Moyer  and
Rudy Esau
James R. Moyer
Affiliation:
Agric. and Agri-Food Canada Res. Cent., Lethbridge, AB Canada T1J 4B1
Rudy Esau
Affiliation:
Crop Diversification Cent., South, Brooks, AB, Canada T1R 1E6
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Abstract

The effect of imazethapyr and imazamethabenz on following crops was tested in southern Alberta, on Dark Brown and Brown Chernozemic soils, to assess the potential restrictions placed on cropping sequences by the use of these herbicides. Imazamethabenz reduced the yield of sugarbeet seeded one year after application. After imazethapyr application there is risk of yield loss with flax, corn, meadow bromegrass, mustard, sunflower, timothy, and wheat seeded one year later; canola seeded up to two years later; and sugarbeet and potato seeded up to three years later. Legume crops and intermediate wheatgrass may be seeded the year after application with little risk of yield loss. The required recropping intervals limit the use of imazethapyr for weed control in pea, alfalfa, or dry bean in cropping sequences that include sugarbeet, canola, or potato.

Keywords

Imazamethabenz, (±)-2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-4(and 5)-methylbenzoic acid (3:2)imazethapyr, 2-[4,5-dihydro-4-methyl-4-(1-methylethyl)-5-oxo-1H-imidazol-2-yl]-5-ethyl-3-pyridinecarboxylic acidcanola, Brassica napus L.corn, Zea mays L.dry bean, Phaseolus vulgaris L.flax, Linum usitatissimum L.intermediate wheatgrass, Agropyron intermedium (Host) Beauv.meadow bromegrass, Bromus erectus Huds.oriental mustard, Brassica juncea L. Czern. & Cosspeas, Pisum sativum L.potato, Solanum tuberosum L.sugarbeet, Beta vulgaris L.sunflower, Helianthus annuus L.timothy, Phleum pratense L.wheat, Triticum aestivum L.Crop injurypersistencepHimazethapyrimazamethabenz
Type
Research
Information
Weed Technology , Volume 10 , Issue 1 , March 1996 , pp. 100 - 106
Copyright
Copyright © 1996 by the Weed Science Society of America 

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References

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