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Plant Science and Agronomy
Ireland
2023

D-Index & Metrics

Plant Science and Agronomy

D-Index
44
Citations
7729
World Ranking
3022
National Ranking
7

Michael O'Donovan publication distribution in Plant Science and Agronomy in 2026

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 Michael O'Donovan sits on this spectrum.

36–40 publications: 2 scientists 41–45 publications: 7 scientists 46–50 publications: 40 scientists 51–55 publications: 58 scientists 56–60 publications: 60 scientists 61–65 publications: 107 scientists 66–70 publications: 130 scientists 71–75 publications: 153 scientists 76–80 publications: 191 scientists 81–85 publications: 199 scientists 86–90 publications: 206 scientists 91–95 publications: 218 scientists 96–100 publications: 226 scientists 101–105 publications: 227 scientists 106–110 publications: 247 scientists 111–115 publications: 255 scientists 116–120 publications: 253 scientists 121–125 publications: 233 scientists 126–130 publications: 219 scientists 131–135 publications: 201 scientists 136–140 publications: 194 scientists 141–145 publications: 176 scientists 146–150 publications: 157 scientists 151–155 publications: 147 scientists 156–160 publications: 151 scientists 161–165 publications: 159 scientists 166–170 publications: 137 scientists 171–175 publications: 128 scientists 176–180 publications: 126 scientists 181–185 publications: 98 scientists 186–190 publications: 114 scientists 191–195 publications: 100 scientists 196–200 publications: 90 scientists 201–205 publications: 71 scientists 206–210 publications: 98 scientists 211–215 publications: 70 scientists 216–220 publications: 86 scientists 221–225 publications: 61 scientists 226–230 publications: 58 scientists 231–235 publications: 53 scientists 236–240 publications: 64 scientists 241–245 publications: 39 scientists 246–250 publications: 46 scientists 251–255 publications: 51 scientists 256–260 publications: 36 scientists 261–265 publications: 44 scientists 266–270 publications: 35 scientists 271–275 publications: 30 scientists 276–280 publications: 33 scientists 281–285 publications: 35 scientists 286–290 publications: 36 scientists 291–295 publications: 26 scientists 296–300 publications: 26 scientists 301–305 publications: 31 scientists 306–310 publications: 30 scientists 311–315 publications: 21 scientists 316–320 publications: 29 scientists 321–325 publications: 14 scientists 326–330 publications: 15 scientists 331–335 publications: 15 scientists 336–340 publications: 17 scientists 341–345 publications: 15 scientists 346–350 publications: 12 scientists 351–355 publications: 17 scientists 356–360 publications: 18 scientists 361–365 publications: 12 scientists 366–370 publications: 11 scientists 371–375 publications: 6 scientists 376–380 publications: 6 scientists 381–385 publications: 11 scientists 386–390 publications: 9 scientists 391–395 publications: 10 scientists 396–400 publications: 8 scientists 401–405 publications: 4 scientists 406–410 publications: 9 scientists 411–415 publications: 11 scientists 416–420 publications: 4 scientists 421–425 publications: 7 scientists 426–430 publications: 4 scientists 431–435 publications: 3 scientists 436–440 publications: 5 scientists 441–445 publications: 8 scientists 446–450 publications: 6 scientists 451–455 publications: 7 scientists 456–460 publications: 5 scientists 461–465 publications: 6 scientists 466 publications: 2 scientists 467+ publications: 99 scientists
36 publications 467+

This scientist: 188 publications — 74th percentile

74% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 467 publications or more.

Michael O'Donovan D-index placement in Plant Science and Agronomy in 2026

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 Michael O'Donovan sits on this spectrum.

30 D-Index: 200 scientists 31 D-Index: 236 scientists 32 D-Index: 253 scientists 33 D-Index: 283 scientists 34 D-Index: 288 scientists 35 D-Index: 240 scientists 36 D-Index: 246 scientists 37 D-Index: 243 scientists 38 D-Index: 247 scientists 39 D-Index: 229 scientists 40 D-Index: 232 scientists 41 D-Index: 230 scientists 42 D-Index: 228 scientists 43 D-Index: 219 scientists 44 D-Index: 193 scientists 45 D-Index: 164 scientists 46 D-Index: 158 scientists 47 D-Index: 143 scientists 48 D-Index: 131 scientists 49 D-Index: 127 scientists 50 D-Index: 122 scientists 51 D-Index: 122 scientists 52 D-Index: 110 scientists 53 D-Index: 102 scientists 54 D-Index: 98 scientists 55 D-Index: 79 scientists 56 D-Index: 85 scientists 57 D-Index: 88 scientists 58 D-Index: 91 scientists 59 D-Index: 62 scientists 60 D-Index: 61 scientists 61 D-Index: 59 scientists 62 D-Index: 54 scientists 63 D-Index: 61 scientists 64 D-Index: 59 scientists 65 D-Index: 58 scientists 66 D-Index: 41 scientists 67 D-Index: 49 scientists 68 D-Index: 39 scientists 69 D-Index: 32 scientists 70 D-Index: 40 scientists 71 D-Index: 47 scientists 72 D-Index: 38 scientists 73 D-Index: 28 scientists 74 D-Index: 29 scientists 75 D-Index: 28 scientists 76 D-Index: 22 scientists 77 D-Index: 21 scientists 78 D-Index: 25 scientists 79 D-Index: 26 scientists 80 D-Index: 19 scientists 81 D-Index: 16 scientists 82 D-Index: 12 scientists 83 D-Index: 16 scientists 84 D-Index: 14 scientists 85 D-Index: 11 scientists 86 D-Index: 17 scientists 87 D-Index: 13 scientists 88 D-Index: 10 scientists 89 D-Index: 12 scientists 90 D-Index: 18 scientists 91 D-Index: 16 scientists 92 D-Index: 16 scientists 93 D-Index: 17 scientists 94 D-Index: 12 scientists 95 D-Index: 8 scientists 96 D-Index: 9 scientists 97 D-Index: 9 scientists 98 D-Index: 11 scientists 99 D-Index: 12 scientists 100 D-Index: 5 scientists 101 D-Index: 8 scientists 102 D-Index: 4 scientists 103 D-Index: 11 scientists 104 D-Index: 5 scientists 105 D-Index: 9 scientists 106 D-Index: 7 scientists 107 D-Index: 4 scientists 108 D-Index: 8 scientists 109+ D-Index: 99 scientists
30 D-Index 109+

This scientist: 44 D-Index — 55th percentile

55% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 109 D-Index or more.

Research.com Recognitions

  • 2023 - Research.com Plant Science and Agronomy in Ireland Leader Award
  • 2022 - Research.com Plant Science and Agronomy in Ireland Leader Award

Overview

What is he best known for?

The fields of study he is best known for:

  • Agronomy
  • Ecology
  • Animal science

His primary areas of study are Ice calving, Dry matter, Grazing, Animal science and Agronomy. His Dry matter research includes elements of Randomized block design, Dairy cattle and Organic matter. His Grazing research incorporates elements of Agroforestry, Animal product and Temperate climate.

While the research belongs to areas of Animal science, he spends his time largely on the problem of Pasture, intersecting his research to questions surrounding Rumen. Michael O'Donovan has included themes like Concordance correlation coefficient and Agricultural science in his Agronomy study. His Perennial plant study integrates concerns from other disciplines, such as Cultivar, Casein and Raw milk.

His most cited work include:

  • Microbiome analysis of dairy cows fed pasture or total mixed ration diets (169 citations)
  • Effect of restricted access time to pasture on dairy cow milk production, grazing behavior, and dry matter intake (94 citations)
  • Effect of pasture versus indoor feeding systems on raw milk composition and quality over an entire lactation. (72 citations)

What are the main themes of his work throughout his whole career to date?

Michael O'Donovan spends much of his time researching Grazing, Agronomy, Dry matter, Animal science and Pasture. His Grazing study combines topics in areas such as Livestock, Stocking, Lactose and Milk production. His work focuses on many connections between Agronomy and other disciplines, such as Organic matter, that overlap with his field of interest in Randomized block design.

His study in Dry matter is interdisciplinary in nature, drawing from both Silage, Dairy cattle, Tiller, Rumen and Yield. His Animal science research is multidisciplinary, incorporating elements of Feed conversion ratio, Energy balance and Heritability. Michael O'Donovan has researched Pasture in several fields, including Raw milk and Yield.

He most often published in these fields:

  • Grazing (50.00%)
  • Agronomy (48.39%)
  • Dry matter (42.74%)

What were the highlights of his more recent work (between 2016-2021)?

  • Animal science (40.32%)
  • Pasture (25.81%)
  • Grazing (50.00%)

In recent papers he was focusing on the following fields of study:

Michael O'Donovan spends much of his time researching Animal science, Pasture, Grazing, Agronomy and Perennial plant. The concepts of his Animal science study are interwoven with issues in Energy balance and Raw milk. Within one scientific family, Michael O'Donovan focuses on topics pertaining to Concordance correlation coefficient under Pasture, and may sometimes address concerns connected to Grassland management.

His research in Grazing focuses on subjects like Livestock, which are connected to Significant difference and Productivity. His work in Perennial plant covers topics such as Cultivar which are related to areas like Milk production, Spring and Yield. His work carried out in the field of Yield brings together such families of science as Ruminant, Dry matter and Silage.

Between 2016 and 2021, his most popular works were:

  • PastureBase Ireland (59 citations)
  • Original papersPastureBase Ireland: A grassland decision support system and national database (44 citations)
  • Outdoor grazing of dairy cows on pasture versus indoor feeding on total mixed ration: Effects on gross composition and mineral content of milk during lactation. (31 citations)

In his most recent research, the most cited papers focused on:

  • Ecology
  • Agronomy
  • Botany

His scientific interests lie mostly in Pasture, Agronomy, Animal science, Concordance correlation coefficient and Mean squared prediction error. Among his Pasture studies, there is a synthesis of other scientific areas such as Total dissolved solids and Ice calving. His study in the fields of Yield, Lolium perenne and Grazing under the domain of Agronomy overlaps with other disciplines such as Total mixed ration.

Michael O'Donovan combines subjects such as Ruminant, Perennial plant, Dry matter and Silage with his study of Yield. His Animal science research incorporates themes from Biotechnology and Energy balance. Michael O'Donovan has included themes like Grassland management and Grassland in his Concordance correlation coefficient study.

Best Publications

  • Rumen microbial community composition varies with diet and host, but a core microbiome is found across a wide geographical range

    Gemma Henderson;Faith Cox;Siva Ganesh;Arjan Jonker

  • Microbiome analysis of dairy cows fed pasture or total mixed ration diets

    Alexandre B. de Menezes;Eva Lewis;Michael O'Donovan;Brendan F. O'Neill

  • Effect of pasture versus indoor feeding systems on raw milk composition and quality over an entire lactation.

    Tom F. O’Callaghan;Tom F. O’Callaghan;Deirdre Hennessy;Stephen McAuliffe;Stephen McAuliffe;Kieran N. Kilcawley

  • Effect of restricted access time to pasture on dairy cow milk production, grazing behavior, and dry matter intake

    E. Kennedy;M. McEvoy;J.P. Murphy;M. O’Donovan

  • The “Grass-Fed” Milk Story: Understanding the Impact of Pasture Feeding on the Composition and Quality of Bovine Milk

    Mohammad Alothman;Sean A. Hogan;Deirdre Hennessy;Pat Dillon

  • Effects of a perennial ryegrass diet or total mixed ration diet offered to spring-calving Holstein-Friesian dairy cows on methane emissions, dry matter intake, and milk production.

    B.F. O’Neill;B.F. O’Neill;M.H. Deighton;B.M. O’Loughlin;F.J. Mulligan

  • Mid-infrared spectrometry of milk as a predictor of energy intake and efficiency in lactating dairy cows

    Sinead McParland;Eva Lewis;Emer Kennedy;Stephen Moore

  • Requirements of future grass-based ruminant production systems in Ireland

    Michael O'Donovan;Eva Lewis;Padraig O'Kiely

  • Original papersPastureBase Ireland: A grassland decision support system and national database

    Liam Hanrahan;Anne Geoghegan;Michael O'Donovan;Vincent Griffith

  • The Effect of Herbage Allowance and Concentrate Supplementation on Milk Production Performance and Dry Matter Intake of Spring-Calving Dairy Cows in Early Lactation

    M. McEvoy;M. McEvoy;E. Kennedy;J.P. Murphy;T.M. Boland

  • Effect of pregrazing herbage mass on methane production, dry matter intake, and milk production of grazing dairy cows during the mid-season period.

    C.M. Wims;M.H. Deighton;E. Lewis;B. O’Loughlin

  • Effects of grass pasture and concentrate-based feeding systems for spring-calving dairy cows in early spring on performance during lactation

    E. Kennedy;M. O'Donovan;J.-P. Murphy;L. Delaby

  • Extended grazing: A detailed analysis of Irish dairy farms

    D. Läpple;T. Hennessy;M. O’Donovan

  • Development and application of an economic ranking index for perennial ryegrass cultivars

    M. McEvoy;M. O’Donovan;L. Shalloo

  • A comparison of four methods of herbage mass estimation

    M. O'Donovan;P. Dillon;M. Rath;G. Stakelum

  • Sward characteristics, grass dry matter intake and milk production performance are affected by pre-grazing herbage mass and pasture allowance

    J. Curran;J. Curran;L. Delaby;E. Kennedy;J.P. Murphy

  • Genetics of Grass Dry Matter Intake, Energy Balance, and Digestibility in Grazing Irish Dairy Cows

    D.P. Berry;B. Horan;M. O’Donovan;F. Buckley

  • Genetic gain in perennial ryegrass (Lolium perenne) varieties 1973 to 2013

    J. McDonagh;J. McDonagh;M. O’Donovan;M. McEvoy;T. J. Gilliland

  • PastureBase Ireland

    Liam Hanrahan;Anne Geoghegan;Michael O'Donovan;Vincent Griffith

  • Effect of pregrazing herbage mass and pasture allowance on the lactation performance of Holstein-Friesian dairy cows.

    M. McEvoy;M. O’Donovan;E. Kennedy;J.P. Murphy

  • A comparison of perennial ryegrass cultivars differing in heading date and grass ploidy with spring calving dairy cows grazed at two different stocking rates

    Michael O’Donovan;Luc Delaby

  • Grazing cows are more efficient than zero-grazed and grass silage-fed cows in milk rumenic acid production.

    R. Mohammed;C.S. Stanton;J.J. Kennelly;J.K.G. Kramer

  • The variation in morphology of perennial ryegrass cultivars throughout the grazing season and effects on organic matter digestibility

    Marion Beecher;Marion Beecher;Deirdre Hennessy;T. M. Boland;Mary McEvoy

  • Outdoor grazing of dairy cows on pasture versus indoor feeding on total mixed ration: Effects on gross composition and mineral content of milk during lactation.

    Arunima Gulati;Arunima Gulati;Norann Galvin;Eva Lewis;Deirdre Hennessy

  • The effect of initial spring grazing date and subsequent stocking rate on the grazing management, grass dry matter intake and milk production of dairy cows in summer

    E. Kennedy;E. Kennedy;M. O'Donovan;J. P. Murphy;F. P. O'Mara

  • The effect of pasture allowance and concentrate supplementation type on milk production performance and dry matter intake of autumn-calving dairy cows in early lactation

    R.G. Pulido;R. Muñoz;C. Jara;O.A. Balocchi

  • Visual assessment of herbage mass

    M. O'donovan;J. Connolly;P. Dillon;M. Rath

Frequent Co-Authors

Emer Kennedy
Emer Kennedy Teagasc - The Irish Agriculture and Food Development Authority
Luc Delaby
Luc Delaby Institut Agro, France
T. M. Boland
T. M. Boland University College Dublin
Laurence Shalloo
Laurence Shalloo Teagasc - The Irish Agriculture and Food Development Authority
Pat Dillon
Pat Dillon Teagasc - The Irish Agriculture and Food Development Authority
Donagh P. Berry
Donagh P. Berry Teagasc - The Irish Agriculture and Food Development Authority
Frank Buckley
Frank Buckley University College Cork
Frank P. O'Mara
Frank P. O'Mara Teagasc - The Irish Agriculture and Food Development Authority
Padraig O'Kiely
Padraig O'Kiely Teagasc - The Irish Agriculture and Food Development Authority
J.J. Murphy
J.J. Murphy Teagasc - The Irish Agriculture and Food Development Authority

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