World's Best Scientists 2026 revealed!

D-Index & Metrics

Plant Science and Agronomy

D-Index
46
Citations
8075
World Ranking
2695
National Ranking
114

Best Publications

  • Recent Weed Control, Weed Management, and Integrated Weed Management

    K. Neil Harker;John T. O'Donovan

  • Crop yield and nitrogen concentration with controlled release urea and split applications of nitrogen as compared to non-coated urea applied at seeding

    C.A. Grant;R. Wu;F. Selles;K.N. Harker

  • A decade of herbicide-resistant crops in Canada

    H. J. Beckie;K. N. Harker;L. M. Hall;S. I. Warwick

  • Reduced herbicide doses in field crops: A review

    Robert E. Blackshaw;John T. O'donovan;K. Neil Harker;George W. Clayton

  • Seeding rate, herbicide timing and competitive hybrids contribute to integrated weed management in canola (Brassica napus)

    K. N. Harker;G. W. Clayton;R. E. Blackshaw;J. T. O’Donovan

  • Our top 10 herbicide-resistant weed management practices.

    Hugh J Beckie;K Neil Harker

  • Decomposition of crop residues under conventional and zero tillage

    N. Z. Lupwayi;G. W. Clayton;J. T. O’Donovan;K. N. Harker

  • Ongoing Development of Integrated Weed Management Systems on the Canadian Prairies

    Robert E. Blackshaw;K. Neil Harker;John T. O'Donovan;Hugh J. Beckie

  • Crop Losses Due to Weeds in Canada

    Unknown

  • Forage Potential of Intercropping Barley with Faba Bean, Lupin, or Field Pea

    Sheri M. Strydhorst;Jane R. King;Ken J. Lopetinsky;K. Neil Harker

  • Legumes can reduce economic optimum nitrogen rates and increase yields in a wheat–canola cropping sequence in western Canada

    Mervin St. Luce;Cynthia A. Grant;Bernie J. Zebarth;Noura Ziadi

  • Wild oat (Avena fatua) interference in barley (Hordeum vulgare) is influenced by barley variety and seeding rate.

    John T. O'donovan;K. Neil Harker;George W. Clayton;Linda M. Hall

  • Nitrogen release during decomposition of crop residues under conventional and zero tillage

    N Z Lupwayi;G W Clayton;J T O’Donovan;K N Harker

  • Seeding Rate, Nitrogen Rate, and Cultivar Effects on Malting Barley Production

    J. T. O'Donovan;T. K. Turkington;M. J. Edney;G. W. Clayton

  • Phosphorus release during decomposition of crop residues under conventional and zero tillage

    N.Z. Lupwayi;G.W. Clayton;J.T. O’Donovan;K.N. Harker

  • Integrated approaches to managing weeds in spring-sown crops in western Canada

    J.T. O’Donovan;R.E. Blackshaw;K.N. Harker;G.W. Clayton

  • Soil microbial biomass, functional diversity and enzyme activity in glyphosate-resistant wheat–canola rotations under low-disturbance direct seeding and conventional tillage

    N.Z. Lupwayi;K.G. Hanson;K.N. Harker;G.W. Clayton

  • Barley seeding rate influences the effects of variable herbicide rates on wild oat

    John T. O'Donovan;K. Neil Harker;George W. Clayton;Jeff C. Newman

  • Weed-Competitive Ability of Spring and Winter Cereals in the Northern Great Plains

    Brian L. Beres;K. Neil Harker;George W. Clayton;Eric Bremer

  • Rotational Effects of Legumes and Non-Legumes on Hybrid Canola and Malting Barley

    John T. O'Donovan;Cynthia A. Grant;Robert E. Blackshaw;K. Neil Harker

  • Canola Root-Associated Microbiomes in the Canadian Prairies.

    Chih Ying Lay;Terrence H. Bell;Terrence H. Bell;Chantal Hamel;K. Neil Harker

  • Integrating Cropping Systems with Cultural Techniques Augments Wild Oat (Avena fatua) Management in Barley

    K. Neil Harker;John T. O'Donovan;R. Byron Irvine;T. Kelly Turkington

  • Survey of yield losses due to weeds in central Alberta

    K. Neil Harker

  • Timing Weed Removal in Field Pea (Pisum sativum)1

    K. Neil Harker;Robert E. Blackshaw;George W. Clayton

  • Synergistic Mixtures of Sethoxydim and Fluazifop on Annual Grass Weeds

    K. Neil Harker;P. Ashley O'Sullivan

  • Glyphosate Timing and Tillage System Effects on Glyphosate-Resistant Canola (Brassica napus)1

    George W. Clayton;K. Neil Harker;John T. O'donovan;Mirza N. Baig

  • Integration of Agronomic Practices and Herbicides for Sustainable Weed Management in a Zero-Till Barley Field Pea Rotation1

    Robert E. Blackshaw;James R. Moyer;K. Neil Harker;George W. Clayton

  • Broadleaf Herbicide Effects on Clethodim and Quizalofop-P Efficacy on Volunteer Wheat (Triticum aestivum)'

    Robert E. Blackshaw;K. Neil Harker;George W. Clayton;John T. O'donovan

  • Using Degree-Day and Logistic Models to Predict Emergence Patterns and Seasonal Flights of the Cabbage Maggot and Seed Corn Maggot (Diptera: Anthomyiidae) in Canola

    Jim S. Broatch;Lloyd M. Dosdall;George W. Clayton;K. Neil Harker

  • Residual effects of preceding crops and nitrogen fertilizer on yield and crop and soil N dynamics of spring wheat and canola in varying environments on the Canadian prairies

    Cynthia A. Grant;John T. O’Donovan;Robert E. Blackshaw;K. Neil Harker

  • Weed-Competitive Ability of Spring and Winter Cereals in the Northern

    Brian L. Beres;K. Neil Harker;George W. Clayton;Eric Bremer

Frequent Co-Authors

John T. O'Donovan
John T. O'Donovan Agriculture and Agriculture-Food Canada
Robert E. Blackshaw
Robert E. Blackshaw Agriculture and Agriculture-Food Canada
George W. Clayton
George W. Clayton Agriculture and Agriculture-Food Canada
Eric N. Johnson
Eric N. Johnson University of Saskatchewan
Newton Z. Lupwayi
Newton Z. Lupwayi Agriculture and Agriculture-Food Canada
Yantai Gan
Yantai Gan Agriculture and Agriculture-Food Canada
William E. May
William E. May Agriculture and Agri-Food Canada
Cynthia A. Grant
Cynthia A. Grant Agriculture and Agriculture-Food Canada
Hugh J. Beckie
Hugh J. Beckie University of Western Australia
Lloyd M. Dosdall
Lloyd M. Dosdall University of Alberta

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