Herbicide-tolerant canola: weed control and yield comparisons in western Canada. Harker, K., N., Blackshaw, R., E., Kirkland, K., J., Derksen, D., A., & Wall, D. Canadian Journal of Plant Science, 80(3):647-654, 2000.
abstract   bibtex   
Field experiments were conducted at 5 western Canadian locations (Brandon, Lacombe, Lethbridge, Morden and Scott) in 1996 and 1997 to compare weed control and rape (Brassica napus var. oleifera) seed yields in the 3 major herbicide-tolerant rape (HTC) systems. The main objective of this study was to determine if significant weed control and yield advantages could be expected by using herbicides "designated" for HTC compared to a more "standard" application of sethoxydim plus ethametsulfuron (200 + 23 g a.i./ha). In 3 of 10 site-years, glyphosate (450 g a.e./ha) in rape cv. Quest and imazethapyr/imazamox (30 g a.i./ha) in cv. 45A71 provided a yield advantage over the standard treatment. The yield advantages were restricted to the Lacombe and Lethbridge sites and ranged from 13 to 39% increases over the sethoxydim plus ethametsulfuron treatments. Among the HTC, weed control was usually greatest with glyphosate, followed by imazethapyr/imazamox, and then glufosinate (400 g a.i./ha). Glufosinate efficacy was often restricted due to advanced growth stages of some weeds (Avena fatua and Galium aparine). The standard treatment of sethoxydim plus ethametsulfuron did not provide better weed control than glyphosate, but in some cases did improve weed control compared to imazethapyr/imazamox or glufosinate.
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 title = {Herbicide-tolerant canola: weed control and yield comparisons in western Canada},
 type = {article},
 year = {2000},
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 keywords = {America,Avena,Avena fatua,Brassica,Brassica napus,Brassica napus var. oleifera,Brassicaceae,Canada,Capparales,Capparidales,Commonwealth of Nations,Control (HH405) (New March 2000),Cyperales,Developed Countries,Field Crops (FF005) (New March 2000),Galium,Galium aparine,Gentianales,North America,OECD Countries,Pesticide and Drug Resistance (HH410),Pesticides and Drugs,Poaceae,Rubiaceae,Rubiales,Spermatophyta,Weeds and Noxious Plants (FF500),angiosperms,canola,chemical control,crop yield,dicotyledons,ethametsulfuron,eukaryotes,glufosinate,glyphosate,herbicide resistance,herbicides,imazamox,imazethapyr,monocotyledons,oilseed rape,phosphinothricin,plants,rape,seeds,sethoxydim,swede rape,weed control,weedicides,weedkillers,weeds},
 pages = {647-654},
 volume = {80},
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 abstract = {Field experiments were conducted at 5 western Canadian locations (Brandon, Lacombe, Lethbridge, Morden and Scott) in 1996 and 1997 to compare weed control and rape (Brassica napus var. oleifera) seed yields in the 3 major herbicide-tolerant rape (HTC) systems. The main objective of this study was to determine if significant weed control and yield advantages could be expected by using herbicides "designated" for HTC compared to a more "standard" application of sethoxydim plus ethametsulfuron (200 + 23 g a.i./ha). In 3 of 10 site-years, glyphosate (450 g a.e./ha) in rape cv. Quest and imazethapyr/imazamox (30 g a.i./ha) in cv. 45A71 provided a yield advantage over the standard treatment. The yield advantages were restricted to the Lacombe and Lethbridge sites and ranged from 13 to 39% increases over the sethoxydim plus ethametsulfuron treatments. Among the HTC, weed control was usually greatest with glyphosate, followed by imazethapyr/imazamox, and then glufosinate (400 g a.i./ha). Glufosinate efficacy was often restricted due to advanced growth stages of some weeds (Avena fatua and Galium aparine). The standard treatment of sethoxydim plus ethametsulfuron did not provide better weed control than glyphosate, but in some cases did improve weed control compared to imazethapyr/imazamox or glufosinate.},
 bibtype = {article},
 author = {Harker, K N and Blackshaw, R E and Kirkland, K J and Derksen, D A and Wall, D},
 journal = {Canadian Journal of Plant Science},
 number = {3}
}

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