World's Best Scientists 2026 revealed!

D-Index & Metrics

Plant Science and Agronomy

D-Index
70
Citations
19701
World Ranking
703
National Ranking
205

Research.com Recognitions

  • 2009 - Fellow of the Soil Science Society of America (SSSA)

Overview

What is he best known for?

The fields of study he is best known for:

  • Ecology
  • Agriculture
  • Ecosystem

William R. Horwath mostly deals with Agronomy, Environmental chemistry, Soil organic matter, Mineralization and Soil water. His Agronomy study incorporates themes from Nutrient, Organic farming and Cycling. He has included themes like Nitrogen, Incubation, Ferric, Water quality and Nitrate in his Environmental chemistry study.

He interconnects Soil management, Crop rotation, Trifolium repens, No-till farming and Lolium perenne in the investigation of issues within Soil organic matter. His Mineralization research is multidisciplinary, incorporating elements of Food science, Tannin and Tannic acid. His work deals with themes such as Temperate forest and Total organic carbon, which intersect with Soil water.

His most cited work include:

  • Acid fumigation of soils to remove carbonates prior to total organic carbon or CARBON‐13 isotopic analysis (733 citations)
  • Spectrophotometric Determination of Nitrate with a Single Reagent (580 citations)
  • Ammonia oxidation pathways and nitrifier denitrification are significant sources of N2O and NO under low oxygen availability (391 citations)

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

The scientist’s investigation covers issues in Agronomy, Soil water, Soil organic matter, Environmental chemistry and Soil carbon. Agronomy is often connected to Nutrient in his work. His Soil water research includes themes of Hydrology and Organic matter.

William R. Horwath has researched Soil organic matter in several fields, including Total organic carbon, Soil quality, Soil fertility, Cycling and Nutrient cycle. His study looks at the relationship between Environmental chemistry and fields such as Sulfate, as well as how they intersect with chemical problems. His research integrates issues of Soil chemistry, Ecosystem and Mollisol in his study of Soil carbon.

He most often published in these fields:

  • Agronomy (45.06%)
  • Soil water (33.60%)
  • Soil organic matter (18.97%)

What were the highlights of his more recent work (between 2017-2021)?

  • Soil water (33.60%)
  • Environmental chemistry (17.00%)
  • Agronomy (45.06%)

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

His scientific interests lie mostly in Soil water, Environmental chemistry, Agronomy, Soil carbon and Climate change. His study in Soil water focuses on Mineralization in particular. His Environmental chemistry study combines topics from a wide range of disciplines, such as Soil organic matter, Soil pH, Sulfate and Nutrient.

The various areas that William R. Horwath examines in his Soil organic matter study include Primary production, Total organic carbon, Tillage and Biogeochemical cycle. The study incorporates disciplines such as Agriculture, Crop residue and Nitrogen in addition to Agronomy. His Soil carbon research incorporates themes from Soil type, Mollisol, Incubation, Soil series and Soil texture.

Between 2017 and 2021, his most popular works were:

  • Soil microbial biomass size and soil carbon influence the priming effect from carbon inputs depending on nitrogen availability (46 citations)
  • Review and synthesis of the effects of elevated atmospheric CO2 on soil processes: No changes in pools, but increased fluxes and accelerated cycles (42 citations)
  • Sources of Variability that Compromise Mineralizable Carbon as a Soil Health Indicator (25 citations)

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

  • Ecology
  • Agriculture
  • Ecosystem

William R. Horwath mostly deals with Soil water, Environmental chemistry, Ecosystem, Soil carbon and Climate change. His studies in Soil water integrate themes in fields like Nitrification and Cycling. His study in Environmental chemistry is interdisciplinary in nature, drawing from both Water quality, Nutrient, Ammonia and Wetland.

His research in Ecosystem intersects with topics in Inceptisol, Ultisol, Entisol and Hydrology. His Soil carbon research is multidisciplinary, relying on both Residue, Plant residue, Agronomy and Incubation. In the subject of general Agronomy, his work in Tillage is often linked to Energy source, thereby combining diverse domains of study.

Best Publications

  • Acid fumigation of soils to remove carbonates prior to total organic carbon or CARBON-13 isotopic analysis

    David Harris;William R. Horwáth;Chris van Kessel

  • Ammonia oxidation pathways and nitrifier denitrification are significant sources of N2O and NO under low oxygen availability

    Xia Zhu;Martin Burger;Timothy A Doane;William R Horwath

  • Pathways of nitrogen utilization by soil microorganisms - a review.

    Daniel Geisseler;Daniel Geisseler;William R. Horwath;Rainer Georg Joergensen;Bernard Ludwig

  • Changes in Soil Chemical Properties Resulting from Organic and Low-Input Farming Practices

    M. Sean Clark;William R. Horwath;Carol Shennan;Kate M. Scow

  • On-Farm Assessment of Soil Quality in California's Central Valley

    Susan S. Andrews;Jeffrey P. Mitchell;Roberto Mancinelli;Douglas L. Karlen

  • Decomposition of rice straw and microbial carbon use efficiency under different soil temperatures and moistures

    Olivier C Devêvre;William R Horwáth

  • Agroecology: A Review from a Global-Change Perspective

    Thomas P. Tomich;Sonja Brodt;Howard Ferris;Ryan Galt

  • Climate-smart agriculture global research agenda: scientific basis for action

    Kerri L Steenwerth;Amanda K Hodson;Arnold J Bloom;Michael R Carter

  • Soil compaction effects on growth of young ponderosa pine following litter removal in California's Sierra Nevada

    A. Gomez;R. F. Powers;M. J. Singer;W. R. Horwath

  • Comparison of soil N availability and leaching potential, crop yields and weeds in organic, low-input and conventional farming systems in northern California

    D.D. Poudel;W.R. Horwath;W.T. Lanini;S.R. Temple

  • Rice yield and nitrogen utilization efficiency under alternative straw management practices.

    Alison J. Eagle;Jeffrey A. Bird;William R. Horwath;Bruce A. Linquist

  • Comparison of Permanganate-Oxidizable Carbon and Mineralizable Carbon for Assessment of Organic Matter Stabilization and Mineralization

    Tunsisa T. Hurisso;Steve W. Culman;William R. Horwath;Jordon Wade

  • Nitrogen, weeds and water as yield-limiting factors in conventional, low-input, and organic tomato systems.

    M.Sean Clark;William R. Horwath;Carol Shennan;Kate M. Scow

  • Cover cropping affects soil N2O and CO2 emissions differently depending on type of irrigation

    Cynthia M. Kallenbach;Dennis E. Rolston;William R. Horwath

  • Review and synthesis of the effects of elevated atmospheric CO2 on soil processes: No changes in pools, but increased fluxes and accelerated cycles

    Yakov Kuzyakov;Yakov Kuzyakov;William R. Horwath;Maxim Dorodnikov;Evgenia Blagodatskaya

  • Cover cropping and no-tillage improve soil health in an arid irrigated cropping system in California’s San Joaquin Valley, USA

    Jeffrey P. Mitchell;Anil Shrestha;Konrad Mathesius;Kate M. Scow

  • Mineral control of organic carbon mineralization in a range of temperate conifer forest soils

    Craig Rasmussen;Randal J. Southard;William R. Horwath

  • 14C Allocation in tree-soil systems.

    William R. Horwath;Kurt S. Pregitzer;Eldor A. Paul

  • Regulation of extracellular protease activity in soil in response to different sources and concentrations of nitrogen and carbon.

    Daniel Geisseler;William R. Horwath

  • Higher yields and lower methane emissions with new rice cultivars.

    Yu Jiang;Kees Jan van Groenigen;Kees Jan van Groenigen;Shan Huang;Bruce A. Hungate

  • Carbon and nitrogen dynamics in a forest soil amended with purified tannins from different plant species

    Tamara E.C. Kraus;Robert J. Zasoski;Randy A. Dahlgren;William R. Horwath

Frequent Co-Authors

Lucas C. R. Silva
Lucas C. R. Silva University of Oregon
Jeffrey P. Mitchell
Jeffrey P. Mitchell University of California, Davis
Chris van Kessel
Chris van Kessel University of California, Davis
Johan Six
Johan Six ETH Zurich
Kate M. Scow
Kate M. Scow University of California, Davis
Wesley W. Wallender
Wesley W. Wallender University of California, Davis
Craig Rasmussen
Craig Rasmussen University of Arizona
Louise E. Jackson
Louise E. Jackson University of California, Davis
Bruce A. Linquist
Bruce A. Linquist University of California, Davis
Randy A. Dahlgren
Randy A. Dahlgren University of California, Davis

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