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Plant Science and Agronomy
USA
2026

D-Index & Metrics

Plant Science and Agronomy

D-Index
98
Citations
35010
World Ranking
179
National Ranking
63

Jagdish K. Ladha 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 Jagdish K. Ladha 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: 287 publications — 91st percentile

91% of scientists in this discipline score the same or lower.

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

Jagdish K. Ladha 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 Jagdish K. Ladha 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: 98 D-Index — 97th percentile

97% 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

  • 2026 - Research.com Plant Science and Agronomy in United States Leader Award
  • 2014 - Fellow of the Crop Science Society of America (CSSA)
  • 2008 - Fellow of the American Association for the Advancement of Science (AAAS)
  • 2004 - Fellow of the Soil Science Society of America (SSSA)
  • 2002 - Fellow of the American Society of Agronomy (ASA)

Overview

What is he best known for?

The fields of study he is best known for:

  • Agriculture
  • Ecology
  • Agronomy

Jagdish K. Ladha mostly deals with Agronomy, Oryza sativa, Crop, Nitrogen fixation and Cropping system. His Agronomy study frequently draws connections to adjacent fields such as Soil fertility. His work carried out in the field of Oryza sativa brings together such families of science as Field experiment, Inoculation, Poaceae, Botany and Rhizobium leguminosarum.

The concepts of his Crop study are interwoven with issues in Yield, Cultivar and Crop yield. His research integrates issues of Agriculture, Sustainable agriculture, Agricultural engineering and Rhizobacteria in his study of Nitrogen fixation. Jagdish K. Ladha has researched Straw in several fields, including Soil organic matter and Soil water.

His most cited work include:

  • Efficiency of Fertilizer Nitrogen in Cereal Production: Retrospects and Prospects (648 citations)
  • Biological nitrogen fixation: An efficient source of nitrogen for sustainable agricultural production? (626 citations)
  • Weed Management in Direct‐Seeded Rice (451 citations)

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

Jagdish K. Ladha spends much of his time researching Agronomy, Oryza sativa, Nitrogen fixation, Fertilizer and Botany. His Agronomy research includes elements of Nutrient and Soil fertility. His Oryza sativa research integrates issues from Inoculation, Shoot, Rhizobium leguminosarum, Poaceae and Straw.

In his research on the topic of Nitrogen fixation, Sustainability and Productivity is strongly related with Agriculture. While the research belongs to areas of Fertilizer, Jagdish K. Ladha spends his time largely on the problem of Crop residue, intersecting his research to questions surrounding Crop rotation. Jagdish K. Ladha interconnects Colonization, Rhizobia, Rhizobium, Diazotroph and Root hair in the investigation of issues within Botany.

He most often published in these fields:

  • Agronomy (66.39%)
  • Oryza sativa (22.54%)
  • Nitrogen fixation (22.54%)

What were the highlights of his more recent work (between 2009-2021)?

  • Agronomy (66.39%)
  • Agriculture (12.70%)
  • Tillage (9.43%)

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

His scientific interests lie mostly in Agronomy, Agriculture, Tillage, Agroforestry and Productivity. His work carried out in the field of Agronomy brings together such families of science as No-till farming and Crop residue. His Agriculture study combines topics in areas such as Natural resource economics, Climate change, Sustainability and Field.

His Tillage research includes elements of Water use, Cropping system, Crop rotation and Conservation agriculture. The concepts of his Agroforestry study are interwoven with issues in Agricultural productivity, Food security and Weed. His Productivity research integrates issues from Resource, Weed control and Agricultural science.

Between 2009 and 2021, his most popular works were:

  • Direct Seeding of Rice: Recent Developments and Future Research Needs (331 citations)
  • Global nitrogen budgets in cereals: A 50-year assessment for maize, rice, and wheat production systems. (165 citations)
  • Effect of Tillage and Crop Establishment Methods on Physical Properties of a Medium-Textured Soil under a Seven-Year Rice−Wheat Rotation (160 citations)

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

  • Agriculture
  • Ecology
  • Bacteria

The scientist’s investigation covers issues in Agronomy, Tillage, Crop, Crop residue and Crop yield. Jagdish K. Ladha studies Manure, a branch of Agronomy. Fertilizer is closely connected to Land degradation in his research, which is encompassed under the umbrella topic of Manure.

His Tillage research is multidisciplinary, relying on both Transplanting, Cropping system, Crop rotation and Conservation agriculture. His work in Transplanting tackles topics such as Weed control which are related to areas like Cultivar and Nutrient. In his study, Oryza sativa and Agroforestry is inextricably linked to Water use, which falls within the broad field of Cropping system.

Best Publications

  • Efficiency of Fertilizer Nitrogen in Cereal Production: Retrospects and Prospects

    Jagdish K. Ladha;Himanshu Pathak;Timothy J. Krupnik;J. Six

  • Biological nitrogen fixation: An efficient source of nitrogen for sustainable agricultural production?

    M. B. Peoples;D. F. Herridge;J. K. Ladha

  • Weed Management in Direct‐Seeded Rice

    A.N. Rao;D.E. Johnson;B. Sivaprasad;J.K. Ladha

  • Direct Seeding of Rice: Recent Developments and Future Research Needs

    Virender Kumar;Jagdish K. Ladha

  • Opportunities for increased nitrogen-use efficiency from improved resource management in irrigated rice systems

    Kenneth Cassman;S. Peng;D.C. Olk;J.K. Ladha

  • How extensive are yield declines in long-term rice-wheat experiments in Asia?

    J.K Ladha;D Dawe;H Pathak;A.T Padre

  • Rhizobia inoculation improves nutrient uptake and growth of lowland rice.

    J.C. Biswas;J.K. Ladha;F.B. Dazzo

  • Evaluation of plant growth promoting and colonization ability of endophytic diazotrophs from deep water rice

    Subhash C Verma;Jagdish K Ladha;Anil K Tripathi

  • Global nitrogen budgets in cereals: A 50-year assessment for maize, rice, and wheat production systems.

    J. K. Ladha;A. Tirol-Padre;C. K. Reddy;Kenneth Cassman

  • Natural endophytic association between Rhizobium leguminosarum bv. trifolii and rice roots and assessment of its potential to promote rice growth

    Youssef G. Yanni;R. Y. Rizk;V. Corich;A. Squartini

  • Infection and Colonization of Rice Seedlings by the Plant Growth-Promoting Bacterium Herbaspirillum seropedicae Z67

    Euan K. James;Prasad Gyaneshwar;Natarajan Mathan;Wilfredo L. Barraquio

  • Endophytic Colonization of Rice by a Diazotrophic Strain of Serratia marcescens

    Prasad Gyaneshwar;Euan K. James;Natarajan Mathan;Pallavolu M. Reddy

  • Saving of Water and Labor in a Rice–Wheat System with No-Tillage and Direct Seeding Technologies

    Lav Bhushan;Jagdish K. Ladha;Raj K. Gupta;S. Singh

  • Biological nitrogen fixation for sustainable agriculture: A perspective

    B. B. Bohlool;J. K. Ladha;D. P. Garrity;T. George

  • Evaluation of precision land leveling and double zero-till systems in the rice–wheat rotation: Water use, productivity, profitability and soil physical properties

    M.L. Jat;M.K. Gathala;J.K. Ladha;Y.S. Saharawat

  • Chlorophyll Meter– and Leaf Color Chart–Based Nitrogen Management for Rice and Wheat in Northwestern India

    Bijay Singh;Yadvinder Singh;Jagdish K. Ladha;Kevin F. Bronson;Kevin F. Bronson

  • Rhizobial Inoculation Influences Seedling Vigor and Yield of Rice

    Jatish C. Biswas;Jagdish K. Ladha;Frank B. Dazzo;Youssef G. Yanni

  • Effect of Tillage and Crop Establishment Methods on Physical Properties of a Medium-Textured Soil under a Seven-Year Rice−Wheat Rotation

    Mahesh K. Gathala;J. K. Ladha;Yashpal S. Saharawat;Virender Kumar

  • Long-term effects of organic inputs on yield and soil fertility in the rice-wheat rotation

    Yadvinder-Singh;Bijay-Singh;J. K. Ladha;C. S. Khind

  • Evaluation of alternative tillage and crop establishment methods in a rice-wheat rotation in North Western IGP

    Y.S. Saharawat;Bhagat Singh;R.K. Malik;Jagdish K. Ladha

  • Trends of climatic potential and on-farm yields of rice and wheat in the Indo-Gangetic Plains

    H Pathak;J.K Ladha;P.K Aggarwal;S Peng

Frequent Co-Authors

Mahesh K. Gathala
Mahesh K. Gathala International Maize and Wheat Improvement Center
Himanshu Pathak
Himanshu Pathak Indian Council of Agricultural Research
Agnes Tirol-Padre
Agnes Tirol-Padre International Rice Research Institute
Virender Kumar
Virender Kumar International Rice Research Institute
Mathias Becker
Mathias Becker University of Bonn
Y.S. Saharawat
Y.S. Saharawat International Center for Agricultural Research in the Dry Areas, Syria
Frank B. Dazzo
Frank B. Dazzo Michigan State University
Mangi Lal Jat
Mangi Lal Jat International Maize and Wheat Improvement Center
Mark B. Peoples
Mark B. Peoples Commonwealth Scientific and Industrial Research Organisation
Roland J. Buresh
Roland J. Buresh International Rice Research Institute

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