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Robert E. BlackshawPostemergence weed control in pea (Pisum sativum) with imazamoxWeed Technology 12 (1), 64-68 (1998)
R.E. Blackshaw, and K.N. HarkerErodium cicutarium density and duration of interference effects on yield of wheat, oilseed rape, pea and dry beanWeed Research 38 (1), 55-62 (1998)
Robert E. Blackshaw, Louis J. Molnar, and C. Wayne LindwallMerits of a weed-sensing sprayer to control weeds in conservation fallow and cropping systemsWeed Science 46 (1), 120-126 (1998)
Robert E. Blackshaw, Louis J. Molnar, Duane F. Chevalier, and C. Wayne LindwallFactors affecting the operation of the weed-sensing detectspray systemWeed Science 46 (1), 127-131 (1998)
R.E. Blackshaw, and K.N. HarkerScentless chamomile (Matricaria perforata) growth, development, and seed productionWeed Science 45 (5), 701-705 (1997)
Robert E. Blackshaw, and William M. HammanControl of downy brome (Bromus tectorum) in winter wheat (Triticum aestivum) with MON 37500Weed Technology 12 (3), 421-425 (1998)
A. Rashid, J.T. O'Donovan, A.A. Khan, R.E. Blackshaw, K.N. Harker, and R.P. PharisA possible involvement of gibberellin in the mechanism of Avena fatua resistance to triallate and cross-resistance to difenzoquatWeed Research 38 (6), 461-466 (1998)
Robert E. Blackshaw, and K. Neil HarkerRedstem filaree (Erodium cicutarium) development and productivity under noncompetitive conditionsWeed Technology 12 (4), 590-594 (1998)
Robert E. Blackshaw, Greg Semach, and Toby EntzPostemergence control of foxtail barley (Hordeum jubatum) seedlings in spring wheat (Triticum aestivum) and flax (Linum usitatissimum)Weed Technology 12 (4), 610-616 (1998)
Robert E. Blackshaw, Greg Semach, Xiangju Li, John T. O'Donovan, and K. Neil HarkerAn integrated weed management approach to managing foxtail barley (Hordeum jubatum) in conservation tillageWeed Technology 13 (2), 347-353 (1999)
Robert E. Blackshaw, Louis J. Molnar, H.-Henning Muendel, Gilles Saindon, and Xiangju LiIntegration of cropping practices and herbicides improves weed management in dry bean (Phaseolus vulgaris)Weed Technology 14 (2), 327-336 (2000)
Robert E. Blackshaw, Greg P. Semach, and John T. O'DonovanUtilization of wheat seed rate to manage redstem filaree (Erodium cicutarium) in a zero-tillage cropping systemWeed Technology 14 (2), 389-396 (2000)
Robert E. Blackshaw, James R. Moyer, Ray C. Doram, and A. Lyle BoswellYellow sweetclover, green manure, and its residues effectively suppress weeds during fallowWeed Science 49 (3), 406-413 (2001)
K. Neil Harker, Robert E. Blackshaw, and George W. ClaytonTiming weed removal in field pea (Pisum sativum)Weed Technology 15 (2), 277-283 (2001)
Robert E. Blackshaw, Deirdre Lemerle, Rodney Mailer, and Ken R. YoungInfluence of wild radish on yield and quality of canolaWeed Science 50 (3), 344-349 (2002)
Robert E. Blackshaw, Randall N. Brandt, and Toby EntzSoil temperature and soil water effects on henbit emergenceWeed Science 50 (4), 494-497 (2002)
Robert E. Blackshaw, Gregory Semach, and H. Henry JanzenFertilizer application method affects nitrogen uptake in weeds and wheatWeed Science 50 (5), 634-641 (2002)
Robert E. Blackshaw, and K. Neil HarkerSelective weed control with glyphosate in glyphosate-resistant spring wheat (Triticum aestivum)Weed Technology 16 (4), 885-892 (2002)
John T. O'Donovan, K. Neil Harker, Robert E. Blackshaw, and Robert N. StougaardEffects of variable tralkoxydim rates on wild oat (Avena fatua) seed production, wheat (Triticum aestivum) yield, and economic returnWeed Technology 17 (1), 149-156 (2003)
J.T. O'Donovan, J.C. Newman, R.E. Blackshaw, K.N. Harker, D.A. Derksen, and A.G. ThomasGrowth, competitiveness, and seed germination of triallate/difenzoquat-susceptible and -resistant wild oat populationsCanadian Journal of Plant Science 79 (2), 303-312 (1999)
R.E. Blackshaw, H.H. Muendel, and G. SaindonCanopy architecture, row spacing and plant density effects on yield of dry bean (Phaseolus vulgaris) in the absence and presence of hairy nightshade (Solanum sarrachoides)Canadian Journal of Plant Science 79 (4), 663-669 (1999)
R.E. Blackshaw, G. Semach, X. Li, J.T. O'Donovan, and K.N. HarkerTillage, fertiliser and glyphosate timing effects on foxtail barley (Hordeum jubatum) management in wheatCanadian Journal of Plant Science 80 (3), 655-660 (2000)
J.T. O'Donovan, R.E. Blackshaw, K.N. Harker, D.W. McAndrew, and G.W. ClaytonCanada thistle (Cirsium arvense) management in canola (Brassica rapa) and barley (Hordem vulgare) rotations under zero tillageCanadian Journal of Plant Science 81 (1), 183-190 (2001)
R.E. Blackshaw, F.J. Larney, C.W. Lindwall, P.R. Watson, and D.A. DerksenTillage intensity and crop rotation affect weed community dynamics in a winter wheat cropping systemCanadian Journal of Plant Science 81 (4), 805-813 (2001)
R.A. Butts, K.D. Floate, M. David, R.E. Blackshaw, and P.A. BurnettInfluence of intercropping canola or pea with barley on assemblages of ground beetles (Coleoptera: Carabidae)Environmental Entomology 32 (3), 535-541 (2003)
R.P. Blackshaw, and S. D'Arcy-BurtSpatial distribution of bibionid larvae in agricultural grasslandEntomologia Experimentalis et Applicata 84 (1), 17-25 (1997)
Robert E. Blackshaw, Louis J. Molnar, and H. Henry JanzenNitrogen fertilizer timing and application method affect weed growth and competition with spring wheatWeed Science 52 (4), 614-622 (2004)
Robert E. BlackshawSoil temperature and soil water effects on pygmyflower (Androsace septentrionalis) emergenceWeed Science 51 (4), 592-595 (2003)
Anne M. Smith, and Robert E. BlackshawWeed-crop discrimination using remote sensing: a detached leaf experimentWeed Technology 17 (4), 811-820 (2003)
K. Neil Harker, and Robert E. BlackshawLeaf extension rate may help determine when low wild oat herbicide rates will be effectiveWeed Technology 17 (4), 829-835 (2003)
Doug A. Derksen, Randy L. Anderson, Robert E. Blackshaw, and Bruce MaxwellWeed dynamics and management strategies for cropping systems in the northern Great PlainsAgronomy Journal 94 (2), 174-185 (2002)
K. Neil Harker, George W. Clayton, Robert E. Blackshaw, John T. O'Donovan, Newton Z. Lupwayi, Eric N. Johnson, Yantai Gan, Robert P. Zentner, Guy P. Lafond, and R. Byron IrvineGlyphosate-resistant spring wheat production system effects on weed communitiesWeed Science 53 (4), 451-464 (2005)
Robert E. Blackshaw, James R. Moyer, K. Neil Harker, and George W. ClaytonIntegration of agronomic practices and herbicides for sustainable weed management in a zero-till barley field pea rotationWeed Technology 19 (1), 190-196 (2005)
Robert E. Blackshaw, Hugh J. Beckie, Louis J. Molnar, Toby Entz, and James R. MoyerCombining agronomic practices and herbicides improves weed management in wheat-canola rotations within zero-tillage production systemsWeed Science 53 (4), 528-535 (2005)
J.T. O'Donovan, R.E. Blackshaw, K.N. Harker, G.W. Clayton, and D.C. MauriceField evaluation of regression equations to estimate crop yield losses due to weedsCanadian Journal of Plant Science 85 (4), 955-962 (2005)
R.E. BlackshawNitrogen fertilizer, manure, and compost effects on weed growth and competition with spring wheatAgronomy Journal 97 (6), 1612-1621 (2005)
K. Neil Harker, George W. Clayton, Robert E. Blackshaw, John T. O'Donovan, Eric N. Johnson, Yantai Gan, Frederick A. Holm, Ken L. Sapsford, R. Byron Irvine, and Rene C. Van AckerGlyphosate-resistant wheat persistence in western Canadian cropping systemsWeed Science 53 (6), 846-859 (2005)
Bharat M. Upadhyay, Elwin G. Smith, G.W. Clayton, K.N. Harker, and R.E. BlackshawEconomics of integrated weed management in herbicide-resistant canolaWeed Science 54 (1), 138-147 (2006)
Robert E. Blackshaw, John T. O'Donovan, K. Neil Harker, George W. Clayton, and Robert N. StougaardReduced herbicide doses in field crops: A reviewWeed Biology and Management 6 (1), 10-17 (2006)
Robert E. Blackshaw, K. Neil Harker, George W. Clayton, and John T. O'DonovanBroadleaf herbicide effects on clethodim and quizalofop-P efficacy on volunteer wheat (Triticum aestivum)Weed Technology 20 (1), 221-226 (2006)
John T. O'Donovan, Robert E. Blackshaw, K. Neil Harker, and George W. ClaytonWheat seeding rate influences herbicide performance in wild oat (Avena fatua L.)Agronomy Journal 98 (3), 815-822 (2006)
Anne Légère, Marie-Josée Simard, Eric Johnson, F. Craig Stevenson, Hugh Beckie, and Robert E. BlackshawControl of volunteer canola with herbicides: effects of plant growth stage and cold acclimationWeed Technology 20 (2), 485-493 (2006)
R.E. Blackshaw, and T. EntzDay and night temperature effects on vegetative growth of Erodium cicutariumWeed Research 35 (6), 471-476 (1995)
K. Neil Harker, Robert E. Blackshaw, and George W. ClaytonWild oat (Avena fatua) vs. redstem filaree (Erodium cicutarium) interference in dry peaWeed Technology 21 (1), 235-240 (2007)
H.A. Cárcamo, and R.E. BlackshawInsect pest incidence and injury to herbicide-tolerant canola in western CanadaAgronomy Journal 99 (3), 842-846 (2007)
K.D. Floate, H.A. Cárcamo, R.E. Blackshaw, B. Postman, and S. BourassaResponse of ground beetle (Coleoptera: Carabidae) field populations to four years of lepidoptera-specific Bt corn productionEnvironmental Entomology 36 (5), 1269-1274 (2007)
J. Mithila, C.J. Swanton, R.E. Blackshaw, R.J. Cathcart, and J. Christopher HallPhysiological basis for reduced glyphosate efficacy on weeds grown under low soil nitrogenWeed Science 56 (1), 12-17 (2008)
J.R. Moyer, R.E. Blackshaw, and H.C. HuangEffect of sweetclover cultivars and management practices on following weed infestations and wheat yieldCanadian Journal of Plant Science 87 (4), 973-983 (2007)
Robert E. Blackshaw, and Randall N. BrandtNitrogen fertilizer rate effects on weed competitiveness is species dependentWeed Science 56 (5), 743-747 (2008)
H.A. Cárcamo, J.K. Otani, L.M. Dosdall, R.E. Blackshaw, G.W. Clayton, K.N. Harker, J.T. O'Donovan, and T. EntzEffects of seeding date and canola species on seedling damage by flea beetles in three ecoregionsJournal of Applied Entomology 132 (8), 623-631 (2008)
J. Otani, H. Cárcamo, L. Dosdall, R. Blackshaw, G. Clayton, N. Harker, K. Turkington, and J. O'DonovanEffects of seeding date, canola species and pesticides on Lygus bugs in Alberta, CanadaJournal of Insect Science 8 (49), 20-21 (2008)
J.S. Ellis, R. Blackshaw, W. Parker, H. Hicks, and M.E. KnightGenetic identification of morphologically cryptic agricultural pestsAgricultural and Forest Entomology 11 (1), 115-121 (2009)
Robert E. Blackshaw, and Randall N. BrandtPhosphorus fertilizer effects on the competition between wheat and several weed speciesWeed Biology and Management 9 (1), 46-53 (2009)
Muhammad Azim Khan, Robert E. Blackshaw, and Khan B. MarwatBiology of milk thistle (Silybum marianum) and the management options for growers in north-western PakistanWeed Biology and Management 9 (2), 99-105 (2009)
Robert E. Blackshaw, and Louis J. MolnarPhosphorus fertilizer application method affects weed growth and competition with wheatWeed Science 57 (3), 311-318 (2009)
Brian L. Beres, K. Neil Harker, George W. Clayton, Eric Bremer, Robert E. Blackshaw, and Robert J. GrafWeed-competitive ability of spring and winter cereals in the Northern Great PlainsWeed Technology 24 (2), 108-116 (2010)
S. Bourassa, H.A. Cárcamo, J.R. Spence, R.E. Blackshaw, and K. FloateEffects of crop rotation and genetically modified herbicide-tolerant corn on ground beetle diversity, community structure, and activity densityThe Canadian Entomologist 142 (2), 143-159 (2010)
L.M. Dosdall, K.N. Harker, J.T. O'Donovan, R.E. Blackshaw, H.R. Kutcher, Y. Gan, and E.N. JohnsonCrop sequence effects on root maggot (Diptera: Anthomyiidae: Delia spp.) infestations in canolaJournal of Economic Entomology 105 (4), 1261-1267 (2012)
Hugh J. Beckie, Robert E. Blackshaw, Ryan Low, Linda M. Hall, Connie A. Sauder, Sara Martin, Randall N. Brandt, and Scott W. ShirriffGlyphosate- and acetolactate synthase inhibitor-resistant kochia (Kochia scoparia) in Western CanadaWeed Science 61 (2), 310-318 (2013)
K. Neil Harker, John T. O'Donovan, T. Kelly Turkington, Robert E. Blackshaw, Eric N. Johnson, Stu Brandt, H. Randy Kutcher, and George W. ClaytonWeed interference impacts and yield recovery after four years of variable crop inputs in no-till barley and canolaWeed Technology 27 (2), 281-290 (2013)
Ayano Sasaki-Crawley, Rosane Curtis, Michael Birkett, Apostolos Papadopoulos, Rod Blackshaw, and John PickettThe use of Pluronic F-127 to study the development of the potato cyst nematode, Globodera pallidaNematology 14 (7), 869-873 (2012)
Linda M. Hall, Hugh J. Beckie, Ryan Low, Scott W. Shirriff, Robert E. Blackshaw, Nicole Kimmel, and Christoph NeeserSurvey of glyphosate-resistant kochia (Kochia scoparia L. Schrad.) in AlbertaCanadian Journal of Plant Science 94 (1), 127-130 (2014)
Hugh J. Beckie, Peter H. Sikkema, Nader Soltani, Robert E. Blackshaw, and Eric N. JohnsonEnvironmental impact of glyphosate-resistant weeds in CanadaWeed Science 62 (2), 385-392 (2014)
K.N. Harker, J.T. O'Donovan, T.K. Turkington, R.E. Blackshaw, N.Z. Lupwayi, E.G. Smith, E.N. Johnson, Y. Gan, H.R. Kutcher, L.M. Dosdall, and G. PengCanola rotation frequency impacts canola yield and associated pest speciesCanadian Journal of Plant Science 95 (1), 9-20 (2015)
Thomas A. Forge, Francis J. Larney, Lawrence M. Kawchuk, Drusilla C. Pearson, Carol Koch, and Robert E. BlackshawCrop rotation effects on Pratylenchus neglectus populations in the root zone of irrigated potatoes in southern AlbertaCanadian Journal of Plant Pathology 37 (3), 363-368 (2015)
K. Neil Harker, John T. O'Donovan, T. Kelly Turkington, Robert E. Blackshaw, Newton Z. Lupwayi, Elwin G. Smith, Eric N. Johnson, Denis Pageau, Steven J. Shirtliffe, Robert H. Gulden, John Rowsell, Linda M. Hall, and Christian J. WillenborgDiverse rotations and optimal cultural practices control wild oat (Avena fatua)Weed Science 64 (1), 170-180 (2016)
Hugh J. Beckie, Robert E. Blackshaw, Linda M. Hall, and Eric N. JohnsonPollen- and seed-mediated gene flow in kochia (Kochia scoparia)Weed Science 64 (4), 624-633 (2016)
H.J. Beckie, R.E. Blackshaw, K.N. Harker, and B.D. TidemannWeed seed shatter in spring wheat in AlbertaCanadian Journal of Plant Science 98 (1), 107-114 (2018)
Harold Steppuhn, Ken G. Wall, Alan D. Iwaasa, Robert E. Blackshaw, Rob Dunn, and Dianne WesterlundSelected forage crops control foxtail barley and downy brome in saline soilsCanadian Journal of Plant Science 98 (2), 408-424 (2018)
H.J. Beckie, R.E. Blackshaw, J.Y. Leeson, P.W. Stahlman, T.A. Gaines, and E.N. JohnsonSeedbank persistence, germination and early growth of glyphosate-resistant Kochia scopariaWeed Research 58 (3), 177-187 (2018)
Elwin G. Smith, K. Neil Harker, John T. O'Donovan, T. Kelly Turkington, Robert E. Blackshaw, Newton Z. Lupwayi, Eric N. Johnson, Denis Pageau, Steven J. Shirtliffe, Robert H. Gulden, Linda M. Hall, and Christian J. Willenborg The profitability of diverse crop rotations and other cultural methods that reduce wild oat (Avena fatua)Canadian Journal of Plant Science 98 (5), 1094-1101 (2018)
Alysha T. Torbiak, Robert E. Blackshaw, Randall N. Brandt, Linda M. Hall, Bill Hamman, and Charles M. Geddes Herbicide mixtures control glyphosate-resistant kochia (Bassia scoparia) in chemical fallow, but their longevity warrants careful stewardshipCanadian Journal of Plant Science 101 (2), 327-331 (2021)
Alysha T. Torbiak, Robert E. Blackshaw, Randall N. Brandt, Bill Hamman, and Charles M. GeddesHerbicide strategies for managing glyphosate-resistant and -susceptible kochia (Bassia scoparia) in spring wheatCanadian Journal of Plant Science 101 (4), 607-620 (2021)
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