John T. O'Donovan
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Publications of John T. O'Donovan (45 listed):
Canadian Journal of Plant Science (2018) 98, 1094-1101
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 (2018)
The profitability of diverse crop rotations and other cultural methods that reduce wild oat (Avena fatua)
Weed Science (2016) 64, 170-180
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. Willenborg (2016)
Diverse rotations and optimal cultural practices control wild oat (Avena fatua)
Agronomy Journal (2016) 108, 1379-1389
T. Kelly Turkington, Brian L. Beres, H. Randy Kutcher, Byron Irvine, Eric N. Johnson, John T. O'Donovan, K. Neil Harker, Christopher B. Holzapfel, Ramona Mohr, Gary Peng and F. Craig Stevenson (2016)
Winter wheat yields are increased by seed treatment and fall-applied fungicide
Journal of Applied Entomology (2016) 140, 364-375
S. Munir, L.M. Dosdall, J.T. O'Donovan and A. Keddie (2016)
Diadegma insulare development is altered by Plutella xylostella reared on water-stressed host plants
Canadian Journal of Plant Science (2015) 95, 9-20
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. Peng (2015)
Canola rotation frequency impacts canola yield and associated pest species
Weed Technology (2013) 27, 1-11
K. Neil Harker and John T. O'Donovan (2013)
Recent weed control, weed management, and integrated weed management
Weed Science (2013) 61, 328-333
John T. O'Donovan, K. Neil Harker, T. Kelly Turkington and George W. Clayton (2013)
Combining cultural practices with herbicides reduces wild oat (Avena fatua) seed in the soil seed bank and improves barley yield
Weed Technology (2013) 27, 281-290
K. Neil Harker, John T. O'Donovan, T. Kelly Turkington, Robert E. Blackshaw, Eric N. Johnson, Stu Brandt, H. Randy Kutcher and George W. Clayton (2013)
Weed interference impacts and yield recovery after four years of variable crop inputs in no-till barley and canola
Journal of Economic Entomology (2012) 105, 1261-1267
L.M. Dosdall, K.N. Harker, J.T. O'Donovan, R.E. Blackshaw, H.R. Kutcher, Y. Gan and E.N. Johnson (2012)
Crop sequence effects on root maggot (Diptera: Anthomyiidae: Delia spp.) infestations in canola
Environmental Entomology (2012) 41, 72-80
J.D. Hummel, L.M. Dosdall, G.W. Clayton, K.N. Harker and J.T. O'Donovan (2012)
Ground beetle (Coleoptera: Carabidae) diversity, activity density, and community structure in a diversified agroecosystem
Agronomy Journal (2009) 101, 1190-1197
Jeremy D. Hummel, Lloyd M. Dosdall, George W. Clayton, T. Kelly Turkington, Newton Z. Lupwayi, K. Neil Harker and John T. O'Donovan (2009)
Canola-wheat intercrops for improved agronomic performance and integrated pest management
Journal of Economic Entomology (2009) 102, 219-228
J.D. Hummel, L.M. Dosdall, G.W. Clayton, K.N. Harker and J.T. O'Donovan (2009)
Effects of canola-wheat intercrops on Delia spp. (Diptera: Anthomyiidae) oviposition, larval feeding damage, and adult abundance
Weed Science (2009) 57, 326-337
K. Neil Harker, John T. O'Donovan, R. Byron Irvine, T. Kelly Turkington and George W. Clayton (2009)
Integrating cropping systems with cultural techniques augments wild oat (Avena fatua) management in barley
Weed Science (2008) 56, 477-483
Jim S. Broatch, Lloyd M. Dosdall, John T. O'Donovan, K. Neil Harker and George W. Clayton (2008)
Herbicide rate effects on weed and root maggot dynamics in canola
Journal of Applied Entomology (2008) 132, 623-631
H.A. Cárcamo, J.K. Otani, L.M. Dosdall, R.E. Blackshaw, G.W. Clayton, K.N. Harker, J.T. O'Donovan and T. Entz (2008)
Effects of seeding date and canola species on seedling damage by flea beetles in three ecoregions
Canadian Journal of Plant Science (2008) 88, 839-842
J.T. O'Donovan, K.N. Harker and D.A. Dew (2008)
Effect of density and time of removal of volunteer canola (Brassica rapa L.) on yield loss of wheat (Triticum aestivum L.)
Weed Science (2007) 55, 70-74
John T. O'Donovan, K. Neil Harker, George W. Clayton, Linda M. Hall, Jason Cathcart, Kenneth L. Sapsford, F.A. (Rick) Holm and Kristin Hacault (2007)
Volunteer barley interference in spring wheat grown in a zero-tillage system
Weed Biology and Management (2006) 6, 10-17
Robert E. Blackshaw, John T. O'Donovan, K. Neil Harker, George W. Clayton and Robert N. Stougaard (2006)
Reduced herbicide doses in field crops: A review
Agronomy Journal (2006) 98, 815-822
John T. O'Donovan, Robert E. Blackshaw, K. Neil Harker and George W. Clayton (2006)
Wheat seeding rate influences herbicide performance in wild oat (Avena fatua L.)
Weed Technology (2006) 20, 221-226
Robert E. Blackshaw, K. Neil Harker, George W. Clayton and John T. O'Donovan (2006)
Broadleaf herbicide effects on clethodim and quizalofop-P efficacy on volunteer wheat (Triticum aestivum)
Journal of Economic Entomology (2006) 99, 1665-1674
L.M. Dosdall, G.W. Clayton, K.N. Harker, J.T. O'Donovan and F.C. Stevenson (2006)
Effects of fall and spring seeding date and other agronomic factors on infestations of root maggots, Delia spp. (Diptera: Anthomyiidae), in canola
Canadian Journal of Plant Pathology (2006) 28, 441-449
T.K. Turkington, K. Xi, G.W. Clayton, P.A. Burnett, H.W. Klein-Gebbinck, N.Z. Lupwayi, K.N. Harker and J.T. O'Donovan (2006)
Impact of crop management on leaf diseases in Alberta barley fields, 1995-1997
Weed Science (2005) 53, 846-859
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 Acker (2005)
Glyphosate-resistant wheat persistence in western Canadian cropping systems
Canadian Journal of Plant Science (2005) 85, 955-962
J.T. O'Donovan, R.E. Blackshaw, K.N. Harker, G.W. Clayton and D.C. Maurice (2005)
Field evaluation of regression equations to estimate crop yield losses due to weeds
Weed Science (2005) 53, 451-464
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 Irvine (2005)
Glyphosate-resistant spring wheat production system effects on weed communities
Weed Technology (2004) 18, 733-741
John T. O'Donovan, Jeff C. Newman, K. Neil Harker and George W. Clayton (2004)
Crop seeding rate influences the performance of variable herbicide rates in a canola-barley-canola rotation
Agronomy Journal (2004) 96, 1306-1313
Lloyd M. Dosdall, George W. Clayton, K. Neil Harker, John T. O'Donovan and F. Craig Stevenson (2004)
The effects of soil fertility and other agronomic factors on infestations of root maggots in canola
Canadian Journal of Plant Pathology (2004) 26, 533-547
T.K. Turkington, H.R. Kutcher, G.W. Clayton, J.T. O'Donovan, A.M. Johnston, K.N. Harker, K. Xi and F.C. Stevenson (2004)
Impact of seedbed utilization and fungicide application on severity of net blotch [Pyrenophora teres] and production of barley
Canadian Journal of Plant Science (2003) 83, 629-644
D.E. Robinson, J.T. O'Donovan, M.P. Sharma, D.J. Doohan and R. Figueroa (2003)
The biology of Canadian weeds. 123. Senecio vulgaris L.
Weed Science (2003) 51, 576-585
Lloyd M. Dosdall, George W. Clayton, K. Neil Harker, John T. O'Donovan and F. Craig Stevenson (2003)
Weed control and root maggots: making canola pest management strategies compatible
Canadian Journal of Plant Science (2003) 83, 171-180
A.L. Darwent, J.C. Drabble, J.T. O'Donovan, Y.K. Soon, P.F. Mills, G.W. Clayton and W.A. Rice (2003)
Crop yields and wild oat control in northern Alberta cropping systems
Weed Research (2003) 43, 214-220
A. Rashid, J.C. Newman, J.T. O'Donovan, D. Robinson, D. Maurice, D. Poisson and L.M. Hall (2003)
Sulfonylurea herbicide resistance in Sonchus asper biotypes in Alberta, Canada
Weed Technology (2003) 17, 149-156
John T. O'Donovan, K. Neil Harker, Robert E. Blackshaw and Robert N. Stougaard (2003)
Effects of variable tralkoxydim rates on wild oat (Avena fatua) seed production, wheat (Triticum aestivum) yield, and economic return
Canadian Journal of Plant Science (2002) 82, 861-863
J.T. O'Donovan and A.S. McClay (2002)
Relationship between relative time of emergence of Tartary buckwheat (Fagopyrum tataricum) and yield loss of barley
Agronomy Journal (2001) 93, 820-827
Shirley M. Ross, Jane R. King, R.César Izaurralde and John T. O'Donovan (2001)
Weed suppression by seven clover species
Weed Science (2001) 49, 746-754
John T. O'Donovan, K. Neil Harker, George W. Clayton, Jeff C. Newman, Darren Robinson and Linda M. Hall (2001)
Barley seeding rate influences the effects of variable herbicide rates on wild oat
Canadian Journal of Plant Science (2001) 81, 183-190
J.T. O'Donovan, R.E. Blackshaw, K.N. Harker, D.W. McAndrew and G.W. Clayton (2001)
Canada thistle (Cirsium arvense) management in canola (Brassica rapa) and barley (Hordem vulgare) rotations under zero tillage
Weed Technology (2000) 14, 624-629
John T. O'Donovan, K. Neil Harker, George W. Clayton and Linda M. Hall (2000)
Wild oat (Avena fatua) interference in barley (Hordeum vulgare) is influenced by barley variety and seeding rate
Weed Technology (2000) 14, 726-733
John T. O'Donovan and David W. McAndrew (2000)
Effect of tillage on weed populations in continuous barley (Hordeum vulgare)
Canadian Journal of Plant Science (2000) 80, 655-660
R.E. Blackshaw, G. Semach, X. Li, J.T. O'Donovan and K.N. Harker (2000)
Tillage, fertiliser and glyphosate timing effects on foxtail barley (Hordeum jubatum) management in wheat
Weed Technology (2000) 14, 389-396
Robert E. Blackshaw, Greg P. Semach and John T. O'Donovan (2000)
Utilization of wheat seed rate to manage redstem filaree (Erodium cicutarium) in a zero-tillage cropping system
Canadian Journal of Plant Science (1999) 79, 303-312
J.T. O'Donovan, J.C. Newman, R.E. Blackshaw, K.N. Harker, D.A. Derksen and A.G. Thomas (1999)
Growth, competitiveness, and seed germination of triallate/difenzoquat-susceptible and -resistant wild oat populations
Weed Technology (1999) 13, 347-353
Robert E. Blackshaw, Greg Semach, Xiangju Li, John T. O'Donovan and K. Neil Harker (1999)
An integrated weed management approach to managing foxtail barley (Hordeum jubatum) in conservation tillage
Weed Research (1998) 38, 461-466
A. Rashid, J.T. O'Donovan, A.A. Khan, R.E. Blackshaw, K.N. Harker and R.P. Pharis (1998)
A possible involvement of gibberellin in the mechanism of Avena fatua resistance to triallate and cross-resistance to difenzoquat
Weed Technology (1997) 11, 502-509
J.T. O'Donovan, D.W. McAndrew and A.G. Thomas (1997)
Tillage and nitrogen influence weed population dynamics in barley (Hordeum vulgare)
