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Journal articles on the topic 'Canola'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Liu, Chang, Yantai Gan, and Lee Poppy. "Evaluation of on-farm crop management decisions on canola productivity." Canadian Journal of Plant Science 94, no. 1 (2014): 131–39. http://dx.doi.org/10.4141/cjps2013-121.

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Liu, C., Gan, Y. and Poppy, L. 2014. Evaluation of on-farm crop management decisions on canola productivity. Can. J. Plant Sci. 94: 131–139. This study determined key factors affecting canola productivity in western Canada and evaluated the differences among soil-climatic zones in canola crops responding to the key agronomic factors. A total of 68 canola farm fields were randomly selected in western Canada, and multiple correspondence analysis, coupled with multivariate predictive model with partial least squares projection and regressions, was used to analyze the data set. Canola produced in

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2

Harker, K. N., J. T. O’Donovan, T. K. Turkington, et al. "Canola rotation frequency impacts canola yield and associated pest species." Canadian Journal of Plant Science 95, no. 1 (2015): 9–20. http://dx.doi.org/10.4141/cjps-2014-289.

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Harker, K. N., O’Donovan, J. T., Turkington, T. K., Blackshaw, R. E., Lupwayi, N. Z., Smith, E. G., Johnson, E. N., Gan, Y., Kutcher, H. R., Dosdall, L. M. and Peng, G. 2015. Canola rotation frequency impacts canola yield and associated pest species. Can. J. Plant Sci. 95: 9–20. Canola (Brassica napus L.) production has been steadily increasing in western Canada. Here we determine the effect of canola rotation frequency on canola seed yield, quality and associated pest species. From 2008 to 2013, direct-seeded experiments involving continuous canola and all rotation phases of wheat (Triticum a

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3

Smith, E. G., H. R. Kutcher, S. A. Brandt, D. Ulrich, S. S. Malhi, and A. M. Johnston. "The profitability of short-duration canola and pea rotations in western Canada." Canadian Journal of Plant Science 93, no. 5 (2013): 933–40. http://dx.doi.org/10.4141/cjps2013-021.

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Smith, E. G., Kutcher, H. R., Brandt, S. A., Ulrich, D., Malhi, S. S. and Johnston, A. M. 2013. The profitability of short-duration canola and pea rotations in western Canada. Can. J. Plant Sci. 93: 933–940. A long-term field study of canola and pea interval in rotations was used to determine the most profitable canola production systems. The duration between canola crops has been declining with most canola grown more often than the recommended once every 4 yr. Producers could be reducing their long-term profitability if the short-duration canola rotation results in increased disease and lower

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Smyth, S. J., M. Gusta, K. Belcher, P. W. B. Phillips, and D. Castle. "Changes in Herbicide Use after Adoption of HR Canola in Western Canada." Weed Technology 25, no. 3 (2011): 492–500. http://dx.doi.org/10.1614/wt-d-10-00164.1.

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This article examines the changes in herbicide use in relation to canola production in Western Canada, comparing 1995 and 2006. The commercialization and widespread adoption of herbicide-resistant (HR) canola has changed weed management practices in Western Canada. Before the introduction of HR canola, weeds were controlled by herbicides and tillage as the leading herbicides at that time required tillage to allow for soil incorporation of the herbicide. Much of the tillage associated with HR canola production has been eliminated as 64% of producers are now using zero or minimum tillage as thei

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Haile, Teketel A., Robert H. Gulden, and Steven J. Shirtliffe. "On-farm seed loss does not differ between windrowed and direct-harvested canola." Canadian Journal of Plant Science 94, no. 4 (2014): 785–89. http://dx.doi.org/10.4141/cjps2013-344.

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Haile, T. A., Gulden, R. H. and Shirtliffe, S. J. 2014. On-farm seed loss does not differ between windrowed and direct-harvested canola. Can. J. Plant Sci. 94: 785–789. Seed loss in canola (Brassica napus) leads to considerable loss of revenue and dispersal of seeds into the soil seedbank. The resulting volunteer canola can create weed problems in subsequent crops and result in further yield loss. The objective of this study was to quantify and compare canola seed loss and seedbank addition from windrowing and direct-harvesting operations on commercial farms in western Canada. A total of 16 di

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Mierau, Allyson, Moria E. Kurtenbach, Eric N. Johnson, et al. "Herbicide programs for control of glyphosate-resistant canola (Brassica napus) in glyphosate-resistant soybean." Weed Technology 34, no. 4 (2020): 540–46. http://dx.doi.org/10.1017/wet.2020.2.

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AbstractGlyphosate-resistant (GR) canola is a widely grown crop across western Canada and has quickly become a prolific volunteer weed. Glyphosate-resistant soybean is rapidly gaining acreage in western Canada. Thus, there is a need to evaluate herbicide options to manage volunteer GR canola in GR soybean crops. We conducted an experiment to evaluate the efficacy of various PRE and POST herbicides applied sequentially to volunteer GR canola and to evaluate soybean injury caused by these herbicides. Trials were conducted across Saskatchewan and Manitoba in 2014 and 2015. All treatments provided

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7

O'Donovan, John T., Arvind K. Sharma, Ken J. Kirkland, and E. Ann De St. Remy. "Volunteer Barley (Hordeum vulgare) Interference in Canola (Brassica campestrisandB. napus)." Weed Science 36, no. 6 (1988): 734–39. http://dx.doi.org/10.1017/s0043174500075743.

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The yield potential and the effect on yield loss of canola of different densities of volunteer barley were investigated at three locations in western Canada. Field studies were conducted from 1982 to 1986. Rectangular hyperbolic models based on data pooled over years, locations, and canola cultivars, and incorporating different densities of volunteer barley and canola accurately portrayed field responses in most instances. Results indicated that volunteer barley severely reduced canola yield. However, financial losses due to reduced canola yield were partly offset by the volunteer barley crop.

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8

N. Harker, K., J. T. O'Donovan, T. K. Turkington, et al. "High-yield no-till canola production on the Canadian prairies." Canadian Journal of Plant Science 92, no. 2 (2012): 221–33. http://dx.doi.org/10.4141/cjps2011-125.

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Harker, K. N., O'Donovan, J. T., Turkington, T. K., Blackshaw, R. E., Lupwayi, N. Z., Smith, E. G., Klein-Gebbinck, H., Dosdall, L. M., Hall, L. M., Willenborg, C. J., Kutcher, H. R., Malhi, S. S., Vera, C. L., Gan, Y., Lafond, G. P., May, W. E., Grant, C. A. and McLaren, D. L. 2012. High-yield no-till canola production on the Canadian prairies. Can. J. Plant Sci. 92: 221–233. Relatively high prices and increasing demand for canola (Brassica napus L.) have prompted growers to produce more canola on more cropland. Here we determine if canola seed yield and oil concentration can be increased ove

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Zhang, Xuehua, and W. G. Dilantha Fernando. "Insights into fighting against blackleg disease of Brassica napus in Canada." Crop and Pasture Science 69, no. 1 (2018): 40. http://dx.doi.org/10.1071/cp16401.

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Blackleg disease, caused by the ascomycete fungal pathogen Leptosphaeria maculans, is a devastating disease of canola (Brassica napus) in Australia, Canada and Europe. Although cultural strategies such as crop rotation, fungicide application, and tillage are adopted to control the disease, the most promising disease control strategy is the utilisation of resistant canola varieties. However, field populations of L. maculans display a high evolutionary potential and are able to overcome major resistance genes within a few years, making disease control relying on resistant varieties challenging.

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Page, Eric R., Sydney Meloche, Meghan Moran, Brian Caldbeck, and Véronique Barthet. "Effect of seeding date on winter canola (Brassica napus L.) yield and oil quality in southern Ontario." Canadian Journal of Plant Science 101, no. 4 (2021): 490–99. http://dx.doi.org/10.1139/cjps-2020-0220.

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Winter canola or winter oilseed rape (Brassica napus L.) is not commonly grown in Canada. While winter oilseed rape is the dominant growth form in Europe, Canadian canola production is dominated by spring types in western Canada. Research conducted in the 1980s indicated that the environmental conditions in southern Ontario are well suited to the production of winter canola. Since then, however, interest in the crop has ebbed, and little to no research has been conducted on the agronomic issues that potentially limit its adoption in the province. The objective of this research was to identify

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11

Harker, K. N., J. T. O'Donovan, T. K. Turkington, et al. "Canola cultivar mixtures and rotations do not mitigate the negative impacts of continuous canola." Canadian Journal of Plant Science 95, no. 6 (2015): 1085–99. http://dx.doi.org/10.4141/cjps-2015-126.

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Harker, K. N., O'Donovan, J. T., Turkington, T. K., Blackshaw, R. E., Lupwayi, N. Z., Smith, E. G., Dosdall, L. M., Hall, L. M., Kutcher, H. R., Willenborg, C. J., Peng, G., Irvine, R. B. and Mohr, R. 2015. Canola cultivar mixtures and rotations do not mitigate the negative impacts of continuous canola. Can. J. Plant Sci. 95: 1085–1099. High-frequency canola (Brassica napus L.) rotations increase canola production risks. From 2008 to 2013, direct-seeded experiments involving several variations of continuous canola were compared with wheat (Triticum aestivum L.) and field pea (Pisum sativum L.)

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12

Harker, K. N., M. D. Hartman, B. D. Tidemann, et al. "Attempts to rescue yield loss in continuous canola with agronomic inputs." Canadian Journal of Plant Science 98, no. 3 (2018): 703–16. http://dx.doi.org/10.1139/cjps-2017-0337.

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Recent canola acreage and production in western Canada have reached record high levels. Field experiments were conducted from 2014 to 2016 on land previously seeded to continuous canola for 6 yr at three Canadian Prairie sites. We determined that more intensive seed inputs, fertilizer, fungicide, tillage, or chaff removal could increase continuous canola yields compared with a “standard practice” (SP) treatment or match yields compared with canola in rotation. Recommended or 50% higher fertility levels alone or in combination with a higher seeding rate, tillage, chaff removal, or additional fu

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DAUN, J. K. "Quality of genetically modified (GM) and conventional varieties of canola (spring oilseed rape) grown in western Canada, 1996–2001." Journal of Agricultural Science 142, no. 3 (2004): 273–80. http://dx.doi.org/10.1017/s0021859604004393.

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The success of GM herbicide tolerant canola is demonstrated by its acceptance by the farm community in Canada. There have been continuing comments, however, including some from major customers, suggesting that GM canola has lower quality than conventional canola. Data drawn from both the Western Canada Canola/Rapeseed Co-operative Test data from 1998–2001 and from the Canadian Grain Commission's harvest surveys of canola from 1996–2001 were used to compare the quality of GM and conventional canola registered and grown. Weed seed contamination of harvest survey samples decreased significantly a

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14

Harker, K. N., J. T. O’Donovan, E. G. Smith, et al. "Seed size and seeding rate effects on canola emergence, development, yield and seed weight." Canadian Journal of Plant Science 95, no. 1 (2015): 1–8. http://dx.doi.org/10.4141/cjps-2014-222.

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Harker, K. N., O’Donovan, J. T., Smith, E. G., Johnson, E. N., Peng, G., Willenborg, C. J., Gulden, R. H., Mohr, R., Gill, K. S. and Grenkow, L. A. 2015. Seed size and seeding rate effects on canola emergence, development, yield and seed weight. Can. J. Plant Sci. 95: 1–8. Canola (Brassica napus L.) is the most common dicotyledonous crop in Canada. Here we determine the effect of canola seed size and seeding rate on canola emergence, development, yield and seed weight. In 2013, direct-seeded experiments were conducted at nine western Canada locations. Four canola seed sizes (1000-seed weights

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15

Hornitzky, M., and A. Ghalayini. "Honey produced from genetically modified canola (Brassica napus) nectar will not need to be labelled as a GM food under current Australian guidelines." Australian Journal of Experimental Agriculture 46, no. 8 (2006): 1101. http://dx.doi.org/10.1071/ea04205.

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Food or ingredients labelled as genetically modified (GM) contain either new genetic material or protein as a result of genetic modification. In Australia, a 1% threshold, below which labelling is not required, exists for the unintended presence of GM material in non-GM foods. The canola pollen content by dry weight in a range of canola honey samples from diverse geographical areas in Australia was determined to be 0.2 ± 0.12%, well below the 1% threshold. Two GM canola honey samples sourced from Canada contained 0.19 and 0.24% of canola pollen. This work indicates honey derived from GM canola

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16

Hwang, S. F., H. U. Ahmed, Q. Zhou, et al. "Influence of resistant cultivars and crop intervals on clubroot of canola." Canadian Journal of Plant Science 99, no. 6 (2019): 862–72. http://dx.doi.org/10.1139/cjps-2019-0018.

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Clubroot, caused by Plasmodiophora brassicae, is an important constraint on canola (Brassica napus) production in Canada. Rotations of clubroot-resistant (CR) canola cultivars in various sequences and planting intervals between canola with non-host crops and fallow periods were evaluated to determine their effects on clubroot severity and P. brassicae resting spore populations under field and micro-plot conditions. Under micro-plot conditions, the rotation sequences including CR canola, continuous fallow, and the non-host barley reduced gall weight by 63%–100% and clubroot severity by 34%–100%

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17

Harker, K. Neil, John T. O'Donovan, Robert E. Blackshaw, Eric N. Johnson, Frederick A. Holm, and George W. Clayton. "Environmental Effects on the Relative Competitive Ability of Canola and Small-Grain Cereals in a Direct-Seeded System." Weed Science 59, no. 3 (2011): 404–15. http://dx.doi.org/10.1614/ws-d-10-00121.1.

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Growing crops that exhibit a high level of competition with weeds increases opportunities to practice integrated weed management and reduce herbicide inputs. The recent development and market dominance of hybrid canola cultivars provides an opportunity to reassess the relative competitive ability of canola cultivars with small-grain cereals. Direct-seeded (no-till) experiments were conducted at five western Canada locations from 2006 to 2008 to compare the competitive ability of canola cultivars vs. small-grain cereals. The relative competitive ability of the species and cultivars was determin

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18

Mason, P. G., O. Olfert, L. Sluchinski, et al. "Actual and potential distribution of an invasive canola pest, Meligethes viridescens (Coleoptera: Nitidulidae), in Canada." Canadian Entomologist 135, no. 3 (2003): 405–13. http://dx.doi.org/10.4039/n02-046.

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AbstractMeligethes viridescens (Fabricius), bronzed or rape blossom beetle, is a widespread and common pest of oilseed rape [Brassica napus L. and Brassica rapa L. (Brassicaceae)] in the western Palaearctic subregion. The establishment of M. viridescens in eastern North America has raised concern that its presence is a potential risk to the Canadian canola industry, especially to the prairie ecozone of western Canada where up to 4 million ha of summer canola (B. napus and B. rapa) are grown annually. Study of museum specimens indicated that M. viridescens was first recorded in Nova Scotia in 1

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19

Harker, K. Neil, George W. Clayton, John T. O'Donovan, Robert E. Blackshaw, and F. Craig Stevenson. "Herbicide Timing and Rate Effects on Weed Management in Three Herbicide-Resistant Canola Systems." Weed Technology 18, no. 4 (2004): 1006–12. http://dx.doi.org/10.1614/wt-03-188r1.

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Herbicide-resistant canola dominates the canola market in Canada. A multiyear field experiment was conducted at three locations to investigate the effect of time of weed removal (two-, four-, or six-leaf canola) and herbicide rate (50 or 100% recommended) in three herbicide-resistant canola systems. Weeds were controlled in glufosinate-resistant canola (GLU) with glufosinate, in glyphosate-resistant canola (GLY) with glyphosate, and in imidazolinone-resistant canola (IMI) with a 50:50 mixture of imazamox and imazethapyr. Canola yields were similar among the three canola cultivar–herbicide syst

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Neil Harker, K. "Survey of yield losses due to weeds in central Alberta." Canadian Journal of Plant Science 81, no. 2 (2001): 339–42. http://dx.doi.org/10.4141/p00-102.

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Weedy and weed-free yields were determined in fields of barley, canola, and peas in Lacombe County, Alberta, Canada from 1995 to 1997. Yield losses were most frequent and severe in peas, and least frequent and less severe in barley. Yield losses due to weed competition were not detectable at 33, 60, and 73% of the pea, canola, and barley sites, respectively. Key words: Competition, interference, barley, canola, peas

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Cathcart, R. Jason, A. Keith Topinka, Prem Kharbanda, Ralph Lange, Rong-Cai Yang, and Linda M. Hall. "Rotation length, canola variety and herbicide resistance system affect weed populations and yield." Weed Science 54, no. 4 (2006): 726–34. http://dx.doi.org/10.1614/ws-05-041r1.1.

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A 4-year study was initiated in 1997 to provide canola producers with information on the consequences of various rotational intervals with the use of new disease and herbicide-resistant canola varieties. The study was conducted at three locations in Alberta, Canada (Ellerslie, Strathmore, and Warburg). At each location, four canola rotations were established: continuous canola, and canola seeded in 1 of 2, 3, or 4 years. Canola varieties included the conventional varieties ‘AC Excel’ and ‘Quantum’, the glyphosate-resistant variety ‘Quest’, imidazolinone-resistant ‘45A71’, and a glufosinate-res

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Soon, Y. K., H. W. Klein-Gebbinck, and M. A. Arshad. "Residue management and crop sequence effects on the yield and brown girdling root rot of canola." Canadian Journal of Plant Science 85, no. 1 (2005): 67–72. http://dx.doi.org/10.4141/p04-058.

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Brown girdling root rot (BGRR) is a serious and widespread disease of canola (Brassica rapa L.) in the Peace River region of northwestern Canada. There is no chemical control treatment for the pathogen, and farmers have observed that the disease is more severe when canola follows red fescue (Festuca rubra L.) or clover (Trifolium spp.) compared to summer fallow. A field study was conducted to determine how crop sequences following red fescue termination can be combined with residue and tillage management to reduce BGRR infection and increase canola yield. The five treatments consisted of rotat

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Clayton, G. W., K. N. Harker, J. T. O’Donovan, et al. "Fall and spring seeding date effects on herbicide-tolerant canola (Brassica napus L.) cultivars." Canadian Journal of Plant Science 84, no. 2 (2004): 419–30. http://dx.doi.org/10.4141/p03-149.

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More flexible and effective weed control with herbicide-tolerant B. napus canola allows for additional seeding management options, such as fall (dormant) and early spring (ES) seeding. Field experiments were conducted at Lacombe and Beaverlodge (1999–2001), Didsbury (1999–2000), and Lethbridge (2000–2001), Alberta, Canada, primarily to evaluate the effect of fall (late October-November), ES (late April-early May), and normal spring (NS) (ca. mid-May) seeding dates on glufosinate-, glyphosate-, and imidazolinone-tolerant canola development and yield. Fall seeding resulted in 46% lower plant den

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Upadhyay, B. M., E. G. Smith, G. W. Clayton, K. N. Harker, J. T. O’Donovan, and R. E. Blackshaw. "Economic evaluation of seeding decisions in hybrid and open-pollinated herbicide-resistant canola (Brassica napus)." Canadian Journal of Plant Science 85, no. 4 (2005): 761–69. http://dx.doi.org/10.4141/p04-135.

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Herbicide-resistant canola (Brassica napus) is widely cultivated in western Canada. Data from a multi-year field experiment conducted at three locations in Alberta were used to investigate the effect of canola cultivar, time of seeding, polymer seed coating (PSC) on profitability and the net return risk. Cultivars included hybrid and open pollinated. Time of seeding was early and late fall, and early and normal spring. The hybrid canola generally had higher mean net return than the open-pollinated cultivar. The probability of thin canola stand was higher for fall dormant seeding compared with

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Gill, Kabal S. "Crop rotations compared with continuous canola and wheat for crop production and fertilizer use over 6 yr." Canadian Journal of Plant Science 98, no. 5 (2018): 1139–49. http://dx.doi.org/10.1139/cjps-2017-0292.

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Local economic, logistic, soil, and weather conditions have made appropriate rotations vary from one area to another. Seed yield and fertilizer use in rotations were compared with continuous cropping for 6 yr in the southeast Peace region of Alberta, Canada. Canola (C) (Brassica napus L.), wheat (W) (Triticum aestivum L.), pea (P) (Pisum sativum L.), barley (B) (Hordeum vulgare L.), and flax (F) (Linum usitatissimum L.) were grown in 12 treatments [i.e., continuous canola (CC) and wheat (WW) and rotations of W–C, P–W–W, C–W–W, C–C–W, P–C–W, C–P–W, W–B–C, B–W–C, F–W–C, and F–C–W]. Canola yield

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Harker, K. N., J. T. O'Donovan, R. E. Blackshaw, E. N. Johnson, G. P. Lafond, and W. E. May. "Seeding depth and seeding speed effects on no-till canola emergence, maturity, yield and seed quality." Canadian Journal of Plant Science 92, no. 4 (2012): 795–802. http://dx.doi.org/10.4141/cjps2011-189.

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Harker, K. N., O'Donovan, J. T., Blackshaw, R. E., Johnson, E. N., Lafond, G. P. and May, W. E. 2012. Seeding depth and seeding speed effects on no-till canola emergence, maturity, yield and seed quality. Can. J. Plant Sci. 92: 795–802. Canola seed costs are substantial, but only a relatively small proportion of planted seeds actually emerge as seedlings. Direct-seeded (no-till) experiments were conducted from 2008 to 2010 at four western Canada locations [Lacombe AB (2007–2010), Lethbridge AB, Indian Head SK, and Scott SK] to determine the influence of cultivar (hybrid vs. open-pollinated), s

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Kiniry, J. R., J. R. Williams, D. J. Major, et al. "EPIC model parameters for cereal, oilseed, and forage crops in the northern Great Plains region." Canadian Journal of Plant Science 75, no. 3 (1995): 679–88. http://dx.doi.org/10.4141/cjps95-114.

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The EPIC computer simulation model has potential for assessing agricultural management scenarios in the northern Great Plains region of the United States and western Canada. The objectives of this study were to develop parameters for economically important crop and forage species grown in these regions and to determine whether EPIC could use these parameters to reasonably simulate yields. Parameters for leaf-area development, temperature responses, biomass growth and partitioning, and nutrient concentrations were derived from data in the literature for spring canola, wheat, barley, maize and s

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Falk, K. C. "ACS-C12 summer turnip rape." Canadian Journal of Plant Science 90, no. 3 (2010): 345–46. http://dx.doi.org/10.4141/cjps09104.

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CS-C12 summer turnip rape (Brassica rapa L.) is a canola-quality, two-parent population-synthetic (Syn1) cultivar adapted to the short-season growing areas of western Canada. On average, it yielded 17% more than the Western Canada Canola/Rapeseed Recommending Committee (WCC/RRC) checks over 3 yr of testing and has high seed oil content.Key words: Turnip rape (summer), synthetic, cultivar description.

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Mason, P. G., J. D. Pinto, Z. L. Long, and J. L. Harris. "FIRST RECORD OF TRICHOGRAMMA INYOENSE (HYMENOPTERA: TRICHOGRAMMATIDAE) ATTACKING THE BERTHA ARMYWORM, MAMESTRA CONFIGURATA (LEPIDOPTERA: NOCTUIDAE)." Canadian Entomologist 130, no. 1 (1998): 105–6. http://dx.doi.org/10.4039/ent130105-1.

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The bertha armyworm, Mamestra configurata Walker, is a major pest of canola in western Canada. In 1994, 1995, and 1996 more than 670 000, 650 000, and 250 000 ha of canola were sprayed for bertha armyworm, respectively (Anonymous 1994, 1995, 1996). Despite the current trend towards increased acreage of canola production in western Canada, canola acreages declined markedly in 1996 from that planted in 1995 (Saskatchewan Agriculture and Food Statistical Facts 1996) in part because of the perception by farmers of the impact of bertha armyworm outbreaks in 1994 and 1995. Much research has been car

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Yantai, Gan, K. Neil Harker, H. Randy Kutcher, et al. "Canola seed yield and phenological responses to plant density." Canadian Journal of Plant Science 96, no. 1 (2016): 151–59. http://dx.doi.org/10.1139/cjps-2015-0093.

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Optimal plant density is required to improve plant phenological traits and maximize seed yield in field crops. In this study, we determined the effect of plant density on duration of flowering, post-flowering phase, and seed yield of canola in diverse environments. The field study was conducted at 16 site-years across the major canola growing area of western Canada from 2010 to 2012. The cultivar InVigor® 5440, a glufosinate-resistant hybrid, was grown at five plant densities (20, 40, 60, 80, and 100 plants m−2) in a randomized complete block design with four replicates. Canola seed yield had

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Newkirk, R. W., H. L. Classen, T. A. Scott, and M. J. Edney. "The digestibility and content of amino acids in toasted and non-toasted canola meals." Canadian Journal of Animal Science 83, no. 1 (2003): 131–39. http://dx.doi.org/10.4141/a02-028.

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A study was conducted to determine the level and digestibilities of amino acids and the level of glucosinolates in toasted and non-toasted canola meal samples produced in commercial crushing plants in western Canada. A total of 26 non-toasted and 31 toasted canola meals samples were analyzed for apparent ileal amino acid digestibilities using broiler chickens between 21 and 28 d of age. Commercially toasted canola meal contained 5.6 g 16 g-1 N (range 5.3–5.9) of Lys with a digestibility ranging from 65.5 to 85.7% (mean = 78.0%). Non-toasted canola meal contained 6.0 g 16 g-1 N (range 5.7–6.3)

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Clayton, G. W., K. N. Harker, J. T. O’Donovan, et al. "Polymer seed coating of early- and late-fall-seeded herbicide-tolerant canola (Brassica napus L.) cultivars." Canadian Journal of Plant Science 84, no. 4 (2004): 971–79. http://dx.doi.org/10.4141/p03-185.

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Polymer seed coatings offer an opportunity to fall seed Brassica napus earlier in October, thus avoiding difficult seeding conditions (wet/frozen soils) common in late October or early November. A multi-year field experiment was conducted at four locations in Alberta, Canada, to investigate the effect of early (mid-October) and late fall (late October-early November) canola seeding with and without a germination-inhibiting polymer seed coat. Yield and yield components were determined in glufosinate (hybrid and open-pollinated), glyphosate (open-pollinated), and imidazolinone (open-pollinated)

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Irvine, R. B., G. P. Lafond, W. May, et al. "Stubble options for winter wheat in the Black soil zone of western Canada." Canadian Journal of Plant Science 93, no. 2 (2013): 261–70. http://dx.doi.org/10.4141/cjps2012-198.

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Irvine, B. R., Lafond, G. P., May, W., Kutcher, H. R., Clayton, G. W., Harker, K. N., Turkington, T. K. and Beres, B. L. 2013. Stubble options for winter wheat in the Black soil zone of western Canada. Can. J. Plant Sci. 93: 261–270. Winter wheat (Triticum aestivum L.) production has yet to reach its full potential in the Canadian prairies. Alternative stubble types are needed to help overcome the challenge of timely planting of winter wheat in late-maturing canola (Brassica napus L.) fields. A study was conducted in the prairie provinces of Canada to determine ideal stubble types for winter w

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Woods, D. L. "AC Sunshine summer turnip rape." Canadian Journal of Plant Science 75, no. 2 (1995): 467–68. http://dx.doi.org/10.4141/cjps95-080.

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AC Sunshine summer turnip rape (Brassica rapa L.) is a canola-quality cultivar that is well adapted to the short and mid-season growing areas of western Canada. It has higher oil and protein content than Tobin. Key words: Rape, canola, Brassica rapa, cultivar description

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Scarth, R., P. B. E. McVetty, and S. R. Rimmer. "Allons low linolenic acid summer rape." Canadian Journal of Plant Science 77, no. 1 (1997): 125–26. http://dx.doi.org/10.4141/p96-093.

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Allons (Brassica napus L.) is a low linolenic acid canola cultivar which produces seed oil with an average linolenic acid content of 2.5%. The low linolenic oil has a shorter hydrogenation time and greater stability than standard canola oil. Allons is higher yielding and contains higher seed oil and lower meal protein than the low linolenic cultivar Stellar. Allons is adapted to the long season B. napus canola growing areas of western Canada. Key words: Rape (summer), low linolenic, cultivar description

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Scarth, R., S. R. Rimmer, and P. B. E. McVetty. "Apollo low linolenic summer rape." Canadian Journal of Plant Science 75, no. 1 (1995): 203–4. http://dx.doi.org/10.4141/cjps95-037.

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Apollo is a low-linolenic acid canola cultivar which produces seed oil with an average linolenic acid content of 1.7%. The low-linolenic oil has a shorter hydrogenation time and greater stability than standard canola oil. Apollo has a significant yield advantage over the low-linolenic cultivar Stellar with higher seed oil and lower seed protein content than Stellar. Apollo is adapted to the southern B. napus canola growing areas of western Canada. Key words: Rape (summer), low linolenic, cultivar description

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Gulden, Robert H., Steven J. Shirtliffe, and A. Gordon Thomas. "Secondary seed dormancy prolongs persistence of volunteer canola in western Canada." Weed Science 51, no. 6 (2003): 904–13. http://dx.doi.org/10.1614/p2002-170.

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In western Canada, little is known about the seedbank ecology of volunteer canola. Therefore, integrated recommendations for the management of this weed are limited. In this study, we investigated the seedbank persistence and seedling recruitment of two spring canola genotype groups with different secondary seed dormancy potentials under contrasting tillage systems. The study was conducted at two locations with different soils in the Mixed Moist Grassland ecoregion of Saskatchewan. A single cohort seedbank was established in 1999 and was followed for 3 yr in successive wheat crops. In a separa

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Darwent, A. L., K. J. Kirkland, L. Townley-Smith, K. N. Harker, and A. J. Cessna. "Effect of preharvest applications of glyphosate on the drying, yield and quality of canola." Canadian Journal of Plant Science 80, no. 2 (2000): 433–39. http://dx.doi.org/10.4141/p99-063.

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Potential use of preharvest applications of glyphosate in canola (Brassica rapa L.) in western Canada both as a harvest aid and to control weeds prompted this study. Experiments were conducted from 1988 to 1990 at four locations in the region to document the effectiveness of preharvest applications of glyphosate to enhance canola seed and foliage drydown and to measure the effect of such applications on seed yield and quality. Glyphosate was applied in early August to early September at rates of 0.45, 0.90 and 1.70 kg acid equivalent ha−1 to canola with seed moisture contents ranging from 79 t

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Weiss, Ross M., Tim Haye, Owen Olfert, et al. "Bioclimatic analysis of cabbage seedpod weevil, Ceutorhyncus obstrictus (Marsham) (Coleoptera: Curculionidae) and canola, Brassica napus Linnaeus (Brassicaceae) responses to climate." Canadian Journal of Plant Science 105 (January 1, 2025): 1–16. https://doi.org/10.1139/cjps-2024-0177.

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The cabbage seedpod weevil (CSW), Ceutorhynchus obstrictus (Marsham) (Coleoptera: Curculionidae) is an important pest of brassicaceous crops, including canola ( Brassica napus Linnaeus). CSW consumes seeds of its host from inside the developing pods. It was introduced to North America from Europe and now occurs throughout the United States of America and Canada. Climate is one of the most important factors that determines species distribution and abundance. CLIMEX is a bioclimate model development application. Based on climate inputs, bioclimatic simulation models are tools that predict the po

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Beckie, H. J., K. N. Harker, L. M. Hall, et al. "A decade of herbicide-resistant crops in Canada." Canadian Journal of Plant Science 86, no. 4 (2006): 1243–64. http://dx.doi.org/10.4141/p05-193.

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This review examines some agronomic, economic, and environmental impacts of herbicide-resistant (HR) canola, soybean, corn, and wheat in Canada after 10 yr of growing HR cultivars. The rapid adoption of HR canola and soybean suggests a net economic benefit to farmers. HR crops often have improved weed management, greater yields or economic returns, and similar or reduced environmental impact compared with their non-HR crop counterparts. There are no marked changes in volunteer weed problems associated with these crops, except in zero-tillage systems when glyphosate is used alone to control can

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Smith, Elwin G., H. H. Janzen, and Nathaniel K. Newlands. "Energy balances of biodiesel production from soybean and canola in Canada." Canadian Journal of Plant Science 87, no. 4 (2007): 793–801. http://dx.doi.org/10.4141/cjps06067.

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Biodiesel is currently produced in Canada mostly from recycled oils and animal fats. If biodiesel is to supply 5% of diesel usage, a government objective, first-time vegetable, likely from canola and soybean, oil will also be required to provide adequate feedstocks. In this review, we estimate the life cycle energy balances for biodiesel produced from soybean and canola oil under Canadian conditions. The three broad areas of energy inputs were crop production, oil extraction, and transesterification of the vegetable oil into biodiesel. Per unit seed yield, farm production energy inputs for can

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Oliveira, A., and P. Yu. "PSXIII-12 Exploring nutritional differences of canola seeds and bio-processing co-products (meals, pellets) from different processing plants/companies in Canada and China for dairy cattle." Journal of Animal Science 99, Supplement_3 (2021): 461–62. http://dx.doi.org/10.1093/jas/skab235.819.

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Abstract Canola was created as a low erucic acid and low glucosinolate seed, to produce high quality oil for human consumption and meal for use in livestock feed. China is an important user of Canadian canola products (seeds, oil, and meal). The extraction of the oil from the seed produces a co-product called canola meal. This meal is rich in protein and is used as a protein source in animal diets. However, differences in the characteristics of the seeds, or processing methods during oil extraction may affect the quality of this co-product. Plus, the synthesis of tissues and milk is related to

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Woods, D. L., and K. C. Falk. "AC Sungold summer turnip rape." Canadian Journal of Plant Science 81, no. 2 (2001): 285–87. http://dx.doi.org/10.4141/p00-107.

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AC Sungold summer turnip rape (Brassica rapa L.) is an open-pollinated canola-quality cultivar adapted to the short season growing areas of western Canada. It combines a higher oil and protein content than the check varieties with a good level of resistance to white rust. Key words: Summer turnip rape, canola, Brassica rapa, cultivar description

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Dosdall, L. M., R. M. Weiss, O. Olfert, and H. A. Cárcamo. "Temporal and geographical distribution patterns of cabbage seedpod weevil (Coleoptera: Curculionidae) in canola." Canadian Entomologist 134, no. 3 (2002): 403–18. http://dx.doi.org/10.4039/ent134403-3.

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AbstractThe cabbage seedpod weevil, Ceutorhynchus obstrictus (Marsham), was discovered infesting canola [Brassica napus L. and Brassica rapa L. (Brassicaceae)] in southern Alberta in 1995, and by 1999 its populations had reached outbreak densities. The weevil has dispersed rapidly through cropland in the southern prairies, prompting this study to assess its potential for establishment in Canada's primary region of canola production in the Moist Mixed Grassland and Aspen Parkland ecoregions. In this study, both short- (24 h) and long-term (4 years) distribution patterns of cabbage seedpod weevi

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NOREEN, Sibgha, Shakeela NOOR, Shakeel AHMAD, Fehmeeda BIBI, and Mirza HASANUZZAMAN. "Quantifying Some Physiological and Productivity Indices of Canola (Brassica napus L.) Crop under an Arid Environment." Notulae Botanicae Horti Agrobotanici Cluj-Napoca 44, no. 1 (2016): 272–79. http://dx.doi.org/10.15835/nbha4419993.

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Canola (Brassica napus L.) crop ranks third after soybean and palm among oilseed crops for production of vegetable oil and meal for human and livestock, respectively around the globe. The cultivars of canola crop vary greatly in their yield potential in response to eco-edaphic factors under different production environments. Therefore, research studies were undertaken to evaluate eight cultivars of canola crop â€˜Shiraleeâ€™, â€˜Dunkledâ€™, â€˜Bulbul-98â€™, â€˜Ac-Excelâ€™, â€˜Cycloneâ€™, â€˜Rainbowâ€™, â€˜DGLâ€™ and â€˜Faisal Canolaâ€™ for quantifying some physiological and productivity indice

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Lawson, Arvel N., Rene C. Van Acker, and Lyle F. Friesen. "Emergence timing of volunteer canola in spring wheat fields in Manitoba." Weed Science 54, no. 5 (2006): 873–82. http://dx.doi.org/10.1614/ws-05-169.i.1.

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Observational studies of weed emergence provide essential data for the creation and testing of predictive emergence models, with data ideally being collected from a wide range of sites representing a range of environments under which the seedlings of a given species emerge. The spring emergence of genetically engineered glyphosate-resistant volunteer canola was monitored in 20 farmers' commercial wheat fields over 2 yr, 2003 and 2004, in the southwestern region of Manitoba, Canada. Three different tillage systems, low-disturbance direct-seeded, high-disturbance direct-seeded, and conventionall

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Gusta, L. V., E. N. Johnson, N. T. Nesbitt, and K. J. Kirkland. "Effect of seeding date on canola seed quality and seed vigour." Canadian Journal of Plant Science 84, no. 2 (2004): 463–71. http://dx.doi.org/10.4141/p03-100.

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Seedling vigour is a key critical component to produce well-established canola (Brassica napus) seedlings under less than ideal conditions in western Canada. Our objective was to determine if seed lots from late October (fall) or early spring (April) seeding dates improve seed vigour relative to mid-May (May) seeding dates. We compared seed size, seed maturity, germination percentage, and seedling emergence under controlled-environment conditions from six seed lots obtained from fall-sown (1997, 1998), April-sown (1998, 1999) and May-sown canola (1998, 1999) cv. Quest. On average, 80% of fall-

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O'Donovan, John T., K. Neil Harker, George W. Clayton, and Robert E. Blackshaw. "Comparison of a Glyphosate-Resistant Canola (Brassica napusL.) System with Traditional Herbicide Regimes." Weed Technology 20, no. 2 (2006): 494–501. http://dx.doi.org/10.1614/wt-05-092r.1.

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Herbicide-resistant cultivars account for over 90% of the canola grown in western Canada and cultivars resistant to glyphosate dominate the market. Field experiments were conducted at three locations in Alberta to compare the glyphosate system with more traditional herbicide regimes. Glyphosate applied before seeding in spring resulted in better weed control, lower dockage, and higher canola yield and net return than 2,4-D applied in the fall. Glyphosate applied once (two- to four-leaf canola) or twice (two- to four-leaf followed by five- to six-leaf canola) in-crop provided similar weed contr

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Eskin, N. A. M. "Effect of variety and geographical location on the incidence of mucilage in canola seeds." Canadian Journal of Plant Science 72, no. 4 (1992): 1223–25. http://dx.doi.org/10.4141/cjps92-149.

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The presence of mucilagenous material was examined in seeds of two Brassica campestris L. cultivars (Tobin and Candle) and four B. napus L. cultivars (Andor, Regent, Triton and Westar) grown at five different locations in Western Canada. Geographical location and variety both significantly (P < 0.001) affected the mucilage levels among the canola seeds studied.Key words: Canola, mucilage, varieties, location

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Harker, K. N., J. T. O'Donovan, R. E. Blackshaw, et al. "Effect of agronomic inputs and crop rotation on biodiesel quality and fatty acid profiles of direct-seeded canola." Canadian Journal of Plant Science 93, no. 4 (2013): 577–88. http://dx.doi.org/10.4141/cjps2012-277.

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Harker, K. N., O'Donovan, J. T., Blackshaw, R. E., Hall, L. M., Willenborg, C. J., Kutcher, H. R., Gan, Y., Lafond, G. P., May, W. E., Grant, C. A., Barthet, V., McDonald, T., Wispinski, D. and Hartman, M. 2013. Effect of agronomic inputs and crop rotation on biodiesel quality and fatty acid profiles of direct-seeded canola. Can. J. Plant Sci. 93: 577–588. A field study was conducted at eight sites in western Canada to determine the influence of agronomic inputs on fatty acid profiles and biodiesel quality of canola. Protein and chlorophyll concentration and fatty acid profiles were determined

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