The chart shows the distribution of publications by all Research.com ranked scientists in the field of Plant Science and Agronomy in 2026. The highlighted bar marks where John T. O'Donovan sits on this spectrum.
This scientist: 196 publications — 76th percentile
76% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 467 publications or more.
The chart shows the D-index (discipline H-index) distribution of Plant Science and Agronomy scientists ranked by Research.com in 2026. The highlighted bar marks where John T. O'Donovan sits on this spectrum.
This scientist: 48 D-Index — 64th percentile
64% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 109 D-Index or more.
John T. O'Donovan spends much of his time researching Agronomy, Weed, Canola, Crop and Weed control. His research brings together the fields of No-till farming and Agronomy. His Weed research is multidisciplinary, relying on both Cover crop, Cropping system and Shoot, Horticulture.
His study focuses on the intersection of Crop and fields such as Brassica with connections in the field of Crimson clover, Secale and Field experiment. John T. O'Donovan studied Weed control and Biomass that intersect with Cultural control and Plant density. In his research, Yield is intimately related to Seeding, which falls under the overarching field of Cultivar.
John T. O'Donovan focuses on Agronomy, Canola, Weed, Hordeum vulgare and Crop. His studies link No-till farming with Agronomy. The various areas that John T. O'Donovan examines in his Canola study include Fertilizer, Field pea, Crop rotation, Glyphosate and Yield.
In his work, Organic farming is strongly intertwined with Poaceae, which is a subfield of Weed. His study in Hordeum vulgare is interdisciplinary in nature, drawing from both Avena fatua, Cropping system, Crop yield and Sowing. His Cultivar study combines topics from a wide range of disciplines, such as Competition and Germination.
His scientific interests lie mostly in Agronomy, Canola, Crop, Brassica and Fertilizer. Crop rotation, Hordeum vulgare, Green manure, Field pea and Growing season are the primary areas of interest in his Agronomy study. His research in Hordeum vulgare tackles topics such as Cropping system which are related to areas like Sowing, Hectare, Nitrous oxide, Winter wheat and Weed control.
His studies in Canola integrate themes in fields like Crop yield, Glufosinate, Legume and Yield. His Brassica study combines topics in areas such as Bolting, Glyphosate, Herbivore and Diamondback moth. His work in Fertilizer tackles topics such as No-till farming which are related to areas like Soil test, Soil management and Bulk soil.
His main research concerns Agronomy, Canola, Green manure, Crop rotation and Field pea. His work in Agronomy is not limited to one particular discipline; it also encompasses Soil organic matter. He combines subjects such as Phenology, Plant density, No-till farming, Yield and Minimum tillage with his study of Canola.
The Green manure study which covers Soil fertility that intersects with Plant nutrition. His research in Field pea intersects with topics in Legume and Hordeum vulgare. His Crop research includes themes of Perennial plant, Field experiment, Avena fatua, Weed and Silage.
K. Neil Harker;John T. O'Donovan
Roger Cousens;Philip Brain;John T. O'Donovan;P. Ashley O'Sullivan
John T. O'Donovan;E. Ann De St. Remy;P. Ashely O'Sullivan;Don A. Dew
Yantai Gan;Chantal Hamel;John T. O’Donovan;Herb Cutforth
Robert E. Blackshaw;John T. O'donovan;K. Neil Harker;George W. Clayton
K. N. Harker;G. W. Clayton;R. E. Blackshaw;J. T. O’Donovan
N. Z. Lupwayi;G. W. Clayton;J. T. O’Donovan;K. N. Harker
Robert E. Blackshaw;K. Neil Harker;John T. O'Donovan;Hugh J. Beckie
L. J. Veldhuis;L. M. Hall;J. T. O'Donovan;W. Dyer
Mervin St. Luce;Cynthia A. Grant;Bernie J. Zebarth;Noura Ziadi
Shirley M. Ross;Jane R. King;John T. O’Donovan;Dean Spaner
John T. O'donovan;K. Neil Harker;George W. Clayton;Linda M. Hall
Shirley M. Ross;Jane R. King;R Cesar C. Izaurralde;John T. O'Donovan
Heather E. Mason;Alireza Navabi;Brenda L. Frick;John T. O'Donovan
N Z Lupwayi;G W Clayton;J T O’Donovan;K N Harker
J. T. O'Donovan;T. K. Turkington;M. J. Edney;G. W. Clayton
N.Z. Lupwayi;G.W. Clayton;J.T. O’Donovan;K.N. Harker
J.T. O’Donovan;R.E. Blackshaw;K.N. Harker;G.W. Clayton
N.Z. Lupwayi;K.G. Hanson;K.N. Harker;G.W. Clayton
John T. O'Donovan;K. Neil Harker;George W. Clayton;Jeff C. Newman
N. Z. Lupwayi;K. N. Harker;G. W. Clayton;T. K. Turkington
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