World's Best Scientists 2026 revealed!

D-Index & Metrics

Plant Science and Agronomy

D-Index
58
Citations
14132
World Ranking
1327
National Ranking
12

M. J. Hedley 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 M. J. Hedley 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: 172 publications — 68th percentile

68% of scientists in this discipline score the same or lower.

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

M. J. Hedley 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 M. J. Hedley 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: 58 D-Index — 80th percentile

80% of scientists in this discipline score the same or lower.

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

Overview

What is he best known for?

The fields of study he is best known for:

  • Agriculture
  • Ecology
  • Fertilizer

His scientific interests lie mostly in Soil water, Agronomy, Pasture, Nutrient and Soil pH. M. J. Hedley combines subjects such as Inorganic chemistry and Mineralogy with his study of Soil water. His Agronomy research includes elements of Canopy and Partial least squares regression.

His Pasture research includes themes of Soil management, Fertilizer, Organic matter and Topsoil. His Nutrient research is multidisciplinary, incorporating elements of Agriculture and Water quality. His Soil pH research incorporates elements of Bulk soil, Horticulture, Botany and Phosphorite.

His most cited work include:

  • Processes of soil acidification during nitrogen cycling with emphasis on legume based pastures (307 citations)
  • Losses and transformation of nitrogen during composting of poultry manure with different amendments: An incubation experiment (199 citations)
  • Environmental hazards of fluoride in volcanic ash: a case study from Ruapehu volcano, New Zealand (160 citations)

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

His main research concerns Soil water, Agronomy, Pasture, Phosphorite and Soil organic matter. M. J. Hedley has included themes like Hydrology and Fertilizer in his Soil water study. The various areas that M. J. Hedley examines in his Agronomy study include Animal science, Nutrient, Soil fertility and Topsoil.

His Pasture study combines topics from a wide range of disciplines, such as Organic matter, Partial least squares regression and Soil management. His work in Phosphorite tackles topics such as Nuclear chemistry which are related to areas like Inorganic chemistry. His biological study spans a wide range of topics, including Soil classification, Nutrient cycle, Leaching and Soil horizon.

He most often published in these fields:

  • Soil water (52.34%)
  • Agronomy (50.00%)
  • Pasture (31.25%)

What were the highlights of his more recent work (between 2007-2020)?

  • Agronomy (50.00%)
  • Soil water (52.34%)
  • Pasture (31.25%)

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

His primary areas of investigation include Agronomy, Soil water, Pasture, Soil science and Soil classification. His Agronomy research is multidisciplinary, incorporating perspectives in Soil fertility and Topsoil. The study of Soil water is intertwined with the study of Drainage in a number of ways.

His work deals with themes such as Dairy farming, Organic matter, Partial least squares regression and Plough, which intersect with Pasture. His research in Soil science intersects with topics in Carbonization and Water extraction. He focuses mostly in the field of Soil classification, narrowing it down to matters related to Soil biodiversity and, in some cases, Soil pH and No-till farming.

Between 2007 and 2020, his most popular works were:

  • In-field hyperspectral proximal sensing for estimating quality parameters of mixed pasture (68 citations)
  • Soil fauna in grazed New Zealand hill country pastures at two management intensities (58 citations)
  • The use of diffuse reflectance spectroscopy for in situ carbon and nitrogen analysis of pastoral soils (56 citations)

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

  • Agriculture
  • Ecology
  • Fertilizer

M. J. Hedley mainly investigates Agronomy, Pasture, Partial least squares regression, Mathematics and Organic matter. His Agronomy study combines topics in areas such as Loam and Soil fertility. His study looks at the relationship between Loam and topics such as Soil type, which overlap with Soil carbon.

The study incorporates disciplines such as Soil organic matter and Mineralogy in addition to Soil carbon. His studies in Pasture integrate themes in fields like Biomass, Soil mesofauna, Earthworm, Topsoil and Soil management. His Partial least squares regression research focuses on subjects like Hyperspectral imaging, which are linked to Nutrient and Absorbance.

Best Publications

  • Effect of biochar on soil physical properties in two contrasting soils: An Alfisol and an Andisol

    Unknown

  • Processes of soil acidification during nitrogen cycling with emphasis on legume based pastures

    N. S. Bolan;M. J. Hedley;R. E. White

  • Plant-induced changes in the rhizosphere of rape (Brassica napus var. Emerald) seedlings. III. Changes in L value, soil phosphate fractions and phosphatase activity.

    Unknown

  • Losses and transformation of nitrogen during composting of poultry manure with different amendments: An incubation experiment

    S. Mahimairaja;N.S. Bolan;M.J. Hedley;A.N. Macgregor

  • PLANT‐INDUCED CHANGES IN THE RHIZOSPHERE OF RAPE (BRASSICA NAPUS VAR. EMERALD) SEEDLINGS

    Unknown

  • Fluoride: A review of its fate, bioavailability, and risks of fluorosis in grazed‐pasture systems in New Zealand

    S. J. Cronin;V. Manoharan;M. J. Hedley;P. Loganathan

  • Environmental hazards of fluoride in volcanic ash: a case study from Ruapehu volcano, New Zealand

    Shane J Cronin;V.E Neall;J.A Lecointre;M.J Hedley

  • A simplified resin membrane technique for extracting phosphorus from soils

    S. Saggar;M. J. Hedley;R. E. White

  • Nutrient management in New Zealand pastures— recent developments and future issues

    R. M. Monaghan;M. J. Hedley;H. J. Di;R. W. McDowell

  • Role of carbon, nitrogen, and sulfur cycles in soil acidification.

    Nanthi S. Bolan;Mike J. Hedley

  • Fertiliser contaminants in New Zealand grazed pasture with special reference to cadmium and fluorine — a review

    P. Loganathan;M. J. Hedley;N. D. Grace;J. Lee

  • A review of the use of phosphate rocks as fertilizers for direct application in Australia and New Zealand.

    NS Bolan;RE White;MJ Hedley

  • Plant induced changes in the rhizosphere of rape brassica napus cultivar emerald seedlings 1. ph change and the increase in phosphorus concentration in the soil solution

    Unknown

  • Agronomic impact of tephra fallout from the 1995 and 1996 Ruapehu Volcano eruptions, New Zealand

    S. J. Cronin;M. J. Hedley;V. E. Neall;R. G. Smith

  • Fluoride accumulation in pasture forages and soils following long-term applications of phosphorus fertilisers

    P. Loganathan;M.J. Hedley;G.C. Wallace;A.H.C. Roberts

  • Progress in selected areas of rhizosphere research on P acquisition

    S. N. Trolove;S. N. Trolove;M. J. Hedley;G. J. D. Kirk;N. S. Bolan

  • Phosphorus efficiency and the forms of soil phosphorus utilized by upland rice cultivars

    Unknown

  • In-field hyperspectral proximal sensing for estimating quality parameters of mixed pasture

    R. R. Pullanagari;I. J. Yule;M. P. Tuohy;M. J. Hedley

  • Transformation of nitrogen and nitrous oxide emission from grassland soils as affected by compaction

    R. Bhandral;S. Saggar;N.S. Bolan;M.J. Hedley

  • A review of literature on the land treatment of farm‐dairy effluent in New Zealand and its impact on water quality

    D. J. Houlbrooke;D. J. Horne;M. J. Hedley;J. A. Hanly

  • Producing biochars with enhanced surface activity through alkaline pretreatment of feedstocks

    K. Hina;P. Bishop;M.C. Arbestain;R. Calvelo-Pereira

  • A nutrient-transfer model to explain the fate of phosphorus and sulphur in a Grazed Hill-Country pasture

    S. Saggar;A.D. Mackay;M.J. Hedley;M.G. Lambert

  • Soil fauna in grazed New Zealand hill country pastures at two management intensities

    N.L. Schon;A.D. Mackay;M.A. Minor;G.W. Yeates

  • Total and soluble fluorine concentrations in relation to properties of soils in New Zealand

    P. Loganathan;C. W. Gray;M. J. Hedley;A. H. C. Roberts

  • Dissolution of phosphate rocks in soils. 2. Effect of pH on the dissolution and plant availability of phosphate rock in soil with pH dependent charge.

    N. S. Bolan;M. J. Hedley

  • Downward movement of cadmium and phosphorus from phosphatic fertilisers in a pasture soil in New Zealand.

    P. Loganathan;M.J. Hedley

  • A technique for studying rhizosphere processes in tree crops : soil phosphorus depletion around camellia (Camellia japonica L.) roots

    A.K.N. Zoysa;P. Loganathan;M.J. Hedley

Frequent Co-Authors

Paripurnanda Loganathan
Paripurnanda Loganathan University of Technology Sydney
Nanthi Bolan
Nanthi Bolan University of Western Australia
Alec D. Mackay
Alec D. Mackay AgResearch
Surinder Saggar
Surinder Saggar Landcare Research
Shane J. Cronin
Shane J. Cronin University of Auckland
Carolyn Hedley
Carolyn Hedley Landcare Research
ND Grace
ND Grace AgResearch
Christopher Anderson
Christopher Anderson Massey University
Hailong Wang
Hailong Wang Foshan University
Vincent E. Neall
Vincent E. Neall Massey University

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