World's Best Scientists 2026 revealed!

D-Index & Metrics

Plant Science and Agronomy

D-Index
53
Citations
13714
World Ranking
1757
National Ranking
464

Raymond Hammerschmidt 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 Raymond Hammerschmidt 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: 197 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.

Raymond Hammerschmidt 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 Raymond Hammerschmidt 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: 53 D-Index — 73rd percentile

73% 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

  • 2007 - Fellow of the American Phytopathological Society

Overview

What is he best known for?

The fields of study he is best known for:

  • Botany
  • Gene
  • Enzyme

Raymond Hammerschmidt mainly focuses on Inoculation, Microbiology, Botany, Peroxidase and Biochemistry. His work carried out in the field of Inoculation brings together such families of science as Cultivar, Systemic acquired resistance, Lignin, Cucurbitaceae and Cell wall. Raymond Hammerschmidt combines subjects such as Plant disease resistance and Solanaceae with his study of Microbiology.

His Botany research integrates issues from Microorganism, Cladosporium cucumerinum, Agrobacterium and Horticulture. He works mostly in the field of Peroxidase, limiting it down to topics relating to Polyacrylamide gel electrophoresis and, in certain cases, Isozyme, Colletotrichum lagenarium, Citrullus lanatus and Specific activity. Raymond Hammerschmidt studies Biochemistry, namely Phenylalanine ammonia-lyase.

His most cited work include:

  • Phenolic Compounds and Their Role in Disease Resistance (1055 citations)
  • Association of enhanced peroxidase activity with induced systemic resistance of cucumber to Colletotrichum lagenarium (885 citations)
  • PHYTOALEXINS: What Have We Learned After 60 Years? (455 citations)

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

Raymond Hammerschmidt spends much of his time researching Botany, Horticulture, Microbiology, Agronomy and Cultivar. The concepts of his Botany study are interwoven with issues in Peroxidase, Inoculation, Wax and Solanaceae. His Inoculation research includes themes of Lignin, Cell wall and Cucurbitaceae.

His work deals with themes such as Plant disease resistance and Mutant, which intersect with Microbiology. His Plant disease resistance study is concerned with Biochemistry in general. His Cultivar research includes elements of Blight and Phytophthora infestans.

He most often published in these fields:

  • Botany (25.75%)
  • Horticulture (20.36%)
  • Microbiology (16.17%)

What were the highlights of his more recent work (between 2011-2021)?

  • Horticulture (20.36%)
  • Agronomy (14.97%)
  • Botany (25.75%)

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

The scientist’s investigation covers issues in Horticulture, Agronomy, Botany, Glyphosate and Prunus. His work on Age-related resistance, Phytophthora capsici and Inoculation as part of general Horticulture research is frequently linked to WINTER SQUASH, bridging the gap between disciplines. His study in Inoculation is interdisciplinary in nature, drawing from both Host, Oomycete and Callus.

His Crop, Yield, Downy mildew and Phakopsora pachyrhizi study in the realm of Agronomy connects with subjects such as Distribution. His study connects Peroxidase and Botany. He focuses mostly in the field of Prunus, narrowing it down to topics relating to Armillaria root rot and, in certain cases, Root disease, Fungus and Microbiology.

Between 2011 and 2021, his most popular works were:

  • Glyphosate Effects on Plant Mineral Nutrition, Crop Rhizosphere Microbiota, and Plant Disease in Glyphosate-Resistant Crops (131 citations)
  • Mechanistic study on uptake and transport of pharmaceuticals in lettuce from water. (30 citations)
  • A Coordinated Effort to Manage Soybean Rust in North America: A Success Story in Soybean Disease Monitoring. (26 citations)

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

  • Botany
  • Gene
  • Enzyme

His primary scientific interests are in Agronomy, Crop, Glyphosate, Shoot and Biochemistry. His Agronomy research incorporates elements of Shikimic acid and Plant defense against herbivory. Raymond Hammerschmidt interconnects Soybean rust, Fusarium, Phakopsora pachyrhizi and Downy mildew in the investigation of issues within Crop.

His Glyphosate research is multidisciplinary, incorporating elements of Rhizosphere, Fungicide and Rhizoctonia. He has included themes like Chromatography, Aqueous solution and Metabolism in his Shoot study. Much of his study explores Biochemistry relationship to Chlorogenic acid.

Best Publications

  • Phenolic Compounds and Their Role in Disease Resistance

    R. L. Nicholson;R. Hammerschmidt

  • Association of enhanced peroxidase activity with induced systemic resistance of cucumber to Colletotrichum lagenarium

    R. Hammerschmidt;E.M. Nuckles;J. Kuć

  • PHYTOALEXINS: What Have We Learned After 60 Years?

    Ray Hammerschmidt

  • Systemic Induction of Salicylic Acid Accumulation in Cucumber after Inoculation with Pseudomonas syringae pv syringae

    Jack B. Rasmussen;Raymond Hammerschmidt;Michael N. Zook

  • Lignification as a mechanism for induced systemic resistance in cucumber

    R. Hammerschmidt;J. Kuć

  • Induced disease resistance : how do induced plants stop pathogens?

    R. Hammerschmidt

  • Phytoalexin-deficient mutants of Arabidopsis reveal that PAD4 encodes a regulatory factor and that four PAD genes contribute to downy mildew resistance.

    Jane Glazebrook;Michael Zook;Figen Mert;Isabelle Kagan

  • Significance of phenolic compounds in plant‐soil‐microbial systems

    José O. Siqueira;Muraleedharan G. Nair;Raymond Hammerschmidt;Gene R. Safir

  • Phytoalexin Accumulation in Arabidopsis thaliana during the Hypersensitive Reaction to Pseudomonas syringae pv syringae

    Jun Tsuji;Evelyn P. Jackson;Douglas A. Gage;Raymond Hammerschmidt

  • Glyphosate Effects on Plant Mineral Nutrition, Crop Rhizosphere Microbiota, and Plant Disease in Glyphosate-Resistant Crops

    Stephen O. Duke;John E Lydon;William C. Koskinen;ThomasB. Moorman

  • Cell wall hydroxyproline enhancement and lignin deposition as an early event in the resistance of cucumber to Cladosporium cucumerinum

    R. Hammerschmidt;D.T.A. Lamport;E.P. Muldoon

  • Induced resistance to disease in plants.

    Raymond Hammerschmidt;Joseph Kuc

  • Rapid deposition of lignin in potato tuber tissue as a response to fungi non-pathogenic on potato

    R. Hammerschmidt

  • Inducing Resistance: A Summary of Papers Presented at the First International Symposium on Induced Resistance to Plant Diseases, Corfu, May 2000

    R. Hammerschmidt;J.-P. Métraux;L.C. van Loon

  • Effect of Treating Apple Trees with Acibenzolar-S-Methyl on Fire Blight and Expression of Pathogenesis-Related Protein Genes.

    Kimberly Maxson-Stein;Sheng Yang He;Raymond Hammerschmidt;Alan L. Jones

  • Effect of treating soybean with 2,6-dichloroisonicotinic acid (INA) and benzothiadiazole (BTH) on seed yields and the level of disease caused by Sclerotinia sclerotiorum in field and greenhouse studies

    Elizabeth Dann;Brian W Diers;Joe Byrum;Ray Hammerschmidt

  • Rapid induction of systemic resistance in cucumber by Pseudomonas syringae pv. syringae

    Jennifer A. Smith;Raymond Hammerschmidt;Dennis W. Fulbright

  • Mechanistic study on uptake and transport of pharmaceuticals in lettuce from water.

    Ya-Hui Chuang;Cheng-Hua Liu;J. Brett Sallach;Raymond Hammerschmidt

  • Transformation of potato with cucumber peroxidase: expression and disease response

    H Ray;D.S Douches;R Hammerschmidt

  • Identification and Onion Pathogenicity of Burkholderia cepacia Complex Isolates from the Onion Rhizosphere and Onion Field Soil

    Janette L. Jacobs;Anthony C. Fasi;Alban Ramette;James J. Smith

  • A survey of plant defense responses to pathogens.

    R. Hammerschmidt;R. L. Nicholson;A. A. Agrawal;S. Tuzun

  • Comparative study of acidic peroxidases associated with induced resistance in cucumber, muskmelon and watermelon

    Jennifer A. Smith;Raymond Hammerschmidt

  • Suppression of Sclerotinia Stem Rot of Soybean by Lactofen Herbicide Treatment

    E. K. Dann;B. W. Diers;R. Hammerschmidt

  • Phenols and plant–pathogen interactions: The saga continues

    R. Hammerschmidt

Frequent Co-Authors

David S. Douches
David S. Douches Michigan State University
Shauna Somerville
Shauna Somerville University of California, Berkeley
Joseph Kuć
Joseph Kuć University of Kentucky
Derek T. A. Lamport
Derek T. A. Lamport University of Sussex
Richard M. Bostock
Richard M. Bostock University of California, Davis
Hui Li
Hui Li Michigan State University
Karen A. Renner
Karen A. Renner Michigan State University
Donald Penner
Donald Penner Michigan State University
Frank W. Ewers
Frank W. Ewers California State Polytechnic University
Jane Glazebrook
Jane Glazebrook University of Minnesota

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