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Residual Effects of CGA-131036 and Chlorsulfuron on Spring-Sown Rotational Crops

Published online by Cambridge University Press:  12 June 2017

George H. Friesen  and
David A. Wall
George H. Friesen
Affiliation:
Agric. Can. Res. Stn., Morden, MB, Canada, R0G 1J0
David A. Wall
Affiliation:
Agric. Can. Res. Stn., Morden, MB, Canada, R0G 1J0
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Abstract

Response of flax, canola, field pea, sunflower, field corn, lentils, and common buckwheat to soil residues of CGA-131036 and chlorsulfuron applied at 22 g ai ha–1 was determined on two soil types at Morden, Manitoba. on a fine sandy loam with a pH of 7.4 and 4.5% organic matter, the length of time required before crops showed no phytotoxicity from CGA-131036 residues was: sunflower 4 yr; canola and common buckwheat 3 yr; flax 2 yr; field pea and field corn 1 yr. on a clay loam with a pH of 6.5 and 5.3% organic matter, the corresponding duration was: lentil, canola, and sunflower 3 yr; flax and field pea 1 yr. Chlorsulfuron residues persisted somewhat longer than CGA-131036 residues on the sandy loam but not on the clay loam.

Keywords

CGA-131036, N-(6-methoxy-4-methyl-1,3,5-triazin-2-yl-aminocarbonyl)-2-(2-chloroethoxy)-benzenesulfonamidechlorsulfuron, 2-chloro-N-[[(4-methoxy-6-methyl-1,3,5-triazin-2-yl)amino]carbonyl]benzenesulfonamidecommon buckwheat, Fagopyrum esculentum Moench. ‘Mancan’canola, Brassica napus L. ‘Regent’flax, Linum usitatissimum L. ‘NorLin’field corn, Zea mays L. ‘Funk G4083’field pea, Pisum sativum L. ‘Century’sunflower, Helianthus annuus L. ‘Sun M20’# HELANlentils, Lens culinaris Medik. ‘Eston’Herbicide persistencesoil pHsoil texturesulfonylureastriasulfuron
Type
Soil, Air, and Water
Information
Weed Science , Volume 39 , Issue 2 , June 1991 , pp. 280 - 283
Copyright
Copyright © 1991 Weed Science Society of America 

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References

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