World's Best Scientists 2026 revealed!

D-Index & Metrics

Plant Science and Agronomy

D-Index
46
Citations
7265
World Ranking
2726
National Ranking
672

Environmental Sciences

D-Index
51
Citations
7834
World Ranking
4819
National Ranking
1772

Research.com Recognitions

  • 1994 - Fellow of the Soil Science Society of America (SSSA)
  • 1992 - 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
  • Irrigation

Robert E. Sojka mainly investigates Polyacrylamide, Irrigation, Surface runoff, Surface irrigation and Soil water. His Irrigation research includes elements of Infiltration, Erosion control, Environmental engineering and Animal science. His Animal science research is multidisciplinary, relying on both Calciorthid, Loam and Infiltrometer.

His study ties his expertise on Agronomy together with the subject of Surface runoff. His Agronomy research is multidisciplinary, incorporating elements of Water quality and Water pollution. His Soil water research integrates issues from Organic matter, Aggregate and Water content.

His most cited work include:

  • Polyacrylamide in agriculture and environmental land management (304 citations)
  • Reservations Regarding the Soil Quality Concept (194 citations)
  • Preventing Irrigation Furrow Erosion with Small Applications of Polymers (168 citations)

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

His primary scientific interests are in Irrigation, Agronomy, Soil water, Surface runoff and Surface irrigation. Robert E. Sojka integrates several fields in his works, including Irrigation and Polyacrylamide. The concepts of his Agronomy study are interwoven with issues in Coastal plain and Nutrient.

His Soil water research incorporates themes from Environmental chemistry, Leachate and Organic matter. The study incorporates disciplines such as Infiltration and Erosion in addition to Surface runoff. In his study, Animal science is strongly linked to Loam, which falls under the umbrella field of Surface irrigation.

He most often published in these fields:

  • Irrigation (45.65%)
  • Agronomy (45.65%)
  • Soil water (42.39%)

What were the highlights of his more recent work (between 2004-2020)?

  • Soil water (42.39%)
  • Irrigation (45.65%)
  • Agronomy (45.65%)

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

His scientific interests lie mostly in Soil water, Irrigation, Agronomy, Infiltration and Surface runoff. His work deals with themes such as Environmental chemistry, Total organic carbon, Composite material, Aggregate and Tillage, which intersect with Soil water. His Irrigation study combines topics in areas such as Water quality, Environmental engineering, Erosion and Agricultural crops.

His study in Agronomy is interdisciplinary in nature, drawing from both Ecology and Nutrient. His Infiltration study incorporates themes from Surface irrigation, Soil test and Water content. His Erosion control research extends to Surface runoff, which is thematically connected.

Between 2004 and 2020, his most popular works were:

  • Polyacrylamide in agriculture and environmental land management (304 citations)
  • Use of Synthetic Polymers and Biopolymers for Soil Stabilization in Agricultural, Construction, and Military Applications (81 citations)
  • The influence of high application rates of polyacrylamide on microbial metabolic potential in an agricultural soil (43 citations)

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

  • Agriculture
  • Ecology
  • Irrigation

Robert E. Sojka mainly focuses on Agronomy, Surface runoff, Irrigation, Soil water and Infiltration. His Agronomy research is multidisciplinary, incorporating perspectives in Subsoil and Soil horizon. Robert E. Sojka combines subjects such as Surface irrigation and Environmental engineering with his study of Surface runoff.

His Surface irrigation study deals with Erosion control intersecting with Loam, Soil quality, Water content, Water conservation and Land management. The various areas that Robert E. Sojka examines in his Environmental engineering study include Soil stabilization, Biopolymer, Polymer, Ditch and Erosion. His studies in Soil water integrate themes in fields like Environmental chemistry, Coastal plain and Nutrient.

Best Publications

  • Polyacrylamide in agriculture and environmental land management

    R.E. Sojka;D.L. Bjorneberg;J.A. Entry;R.D. Lentz

  • Reservations Regarding the Soil Quality Concept

    R. E. Sojka;D. R. Upchurch

  • Correction of cone index for soil water content differences in a coastal plain soil

    W.J. Busscher;P.J. Bauer;C.R. Camp;R.E. Sojka

  • Preventing Irrigation Furrow Erosion with Small Applications of Polymers

    R. D. Lentz;R. E. Sojka;D. L. Carter;I. Shainberg

  • Freezing effects on aggregate stability affected by texture, mineralogy, and organic matter

    G. A. Lehrsch;R. E. Sojka;D. L. Carter;P. M. Jolley

  • Polyacrylamide as an organic nitrogen source for soil microorganisms with potential effects on inorganic soil nitrogen in agricultural soil

    Jeanine L. Kay-Shoemake;Mary E. Watwood;Rodrick D. Lentz;Robert E. Sojka

  • Influence of polyacrylamide application to soil on movement of microorganisms in runoff water.

    R.E. Sojka;J.A. Entry

  • Biopolymer additives to reduce erosion-induced soil losses during irrigation

    William J. Orts;Robert E. Sojka;Gregory M. Glenn

  • Polyacrylamide as a substrate for microbial amidase in culture and soil.

    Jeanine L. Kay-Shoemake;Mary E. Watwood;Robert E. Sojka;Rodrick D. Lentz

  • Use of Synthetic Polymers and Biopolymers for Soil Stabilization in Agricultural, Construction, and Military Applications

    William J. Orts;Aicardo Roa-Espinosa;Robert E. Sojka;Gregory M. Glenn

  • Reducing phosphorus losses from surface-irrigated fields: emerging polyacrylamide technology

    R. D. Lentz;R. E. Sojka;C. W. Robbins

  • Polyacrylamide effect on furrow erosion and infiltration

    T. J. Trout;R. E. Sojka;R. D. Lentz

  • Polyacrylamide preparations for protection of water quality threatened by agricultural runoff contaminants

    James A. Entry;R.E. Sojka;Maribeth Watwood;Craig Ross

  • A Review of Tillage Practices and Their Potential to Impact the Soil Carbon Dynamics

    Promil Mehra;John Baker;Robert E. Sojka;Nanthi Bolan;Nanthi Bolan

  • Analysis of Residual Acrylamide In Field Crops

    Loren S. Bologna;Fikry F. Andrawes;Frank W. Barvenik;Rodrick D. Lentz

  • Photosynthate partitioning and nodule formation in soybean plants that received red or far‐red light at the end of the photosynthetic period

    M. J. Kasperbauer;P. G. Hunt;R. E. Sojka

  • Reducing Furrow Irrigation Erosion with Polyacrylamide (PAM)

    R. E. Sojka;R. D. Lentz

  • Polyacrylamide effects on infiltration in irrigated agriculture

    R. E. Sojka;R. D. Lentz;C. W. Ross;T. J. Trout

  • RESIDUAL EFFECTS OF TILLAGE ON COASTAL PLAIN SOIL STRENGTH1

    Unknown

  • The influence of high application rates of polyacrylamide on microbial metabolic potential in an agricultural soil

    R.E. Sojka;James A. Entry;Jeffry J. Fuhrmann

  • Quality soil management or soil quality management : performance versus semantics

    R.E. Sojka;D.R. Upchurch;N.E. Borlaug

  • Irrigation Increases Inorganic Carbon in Agricultural Soils

    James A. Entry;R. E. Sojka;Glenn E. Shewmaker

  • Conservation tillage for maize production in the U.S. southeastern coastal plain

    R.B. Campbell;D.L. Karlen;R.E. Sojka

  • Nitrogen placement, row spacing, and furrow irrigation water positioning effects on corn yield

    Gary A. Lehrsch;R. E. Sojka;D. T. Westermann

  • Managing soil quality: Challenges in modern agriculture

    Robert E. Sojka;Pedro Sanchez

Frequent Co-Authors

William J. Orts
William J. Orts United States Department of Agriculture
Douglas L. Karlen
Douglas L. Karlen Iowa State University
Warren J. Busscher
Warren J. Busscher Agricultural Research Service
Thomas J. Trout
Thomas J. Trout Agricultural Research Service
Patrick G. Hunt
Patrick G. Hunt Agricultural Research Service
Mark A. Nearing
Mark A. Nearing Agricultural Research Service
Jeffrey M. Novak
Jeffrey M. Novak United States Department of Agriculture
Robert J. Lascano
Robert J. Lascano United States Department of Agriculture
Pedro A. Sanchez
Pedro A. Sanchez University of Florida
Richard A. Gross
Richard A. Gross Rensselaer Polytechnic Institute

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