World's Best Scientists 2026 revealed!

D-Index & Metrics

Plant Science and Agronomy

D-Index
58
Citations
15205
World Ranking
1319
National Ranking
344

Research.com Recognitions

  • 1994 - Fellow of the Soil Science Society of America (SSSA)
  • 1990 - Fellow of the American Society of Agronomy (ASA)

Overview

What is he best known for?

The fields of study he is best known for:

  • Agronomy
  • Fertilizer
  • Botany

James S. Schepers spends much of his time researching Agronomy, Fertilizer, Chlorophyll, Crop and Canopy. His Agronomy study combines topics in areas such as Nitrogen deficiency and Reflectivity. His studies deal with areas such as Fertigation and Yield as well as Crop.

His work carried out in the field of Yield brings together such families of science as Chlorophyll meter and Normalized Difference Vegetation Index. His Canopy research is multidisciplinary, relying on both Radiation and Shortwave radiation. His Growing season research integrates issues from Nutrient management and Agricultural engineering.

His most cited work include:

  • In‐Season Prediction of Potential Grain Yield in Winter Wheat Using Canopy Reflectance (367 citations)
  • Comparison of corn leaf nitrogen concentration and chlorophyll meter readings (346 citations)
  • Use of a Chlorophyll Meter to Monitor Nitrogen Status and Schedule Fertigation for Corn (313 citations)

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

James S. Schepers mainly focuses on Agronomy, Fertilizer, Canopy, Crop and Growing season. While the research belongs to areas of Agronomy, he spends his time largely on the problem of Chlorophyll, intersecting his research to questions surrounding Red edge. The Fertilizer study combines topics in areas such as Soil water, Agricultural engineering and Irrigation.

His Canopy research is multidisciplinary, incorporating perspectives in Normalized Difference Vegetation Index, Remote sensing, Reflectivity and Horticulture. He has included themes like Nitrate test, N application and Stalk in his Crop study. His research integrates issues of Leaching, Nitrogen deficiency and Groundwater in his study of Growing season.

He most often published in these fields:

  • Agronomy (67.35%)
  • Fertilizer (32.65%)
  • Canopy (20.41%)

What were the highlights of his more recent work (between 2015-2020)?

  • Agronomy (67.35%)
  • Crop (19.39%)
  • Fertilizer (32.65%)

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

Agronomy, Crop, Fertilizer, Optical reflectance and Red edge are his primary areas of study. His Agronomy research incorporates elements of Canopy and Leaching. The study incorporates disciplines such as N application, Yield and Reflectivity in addition to Crop.

James S. Schepers combines subjects such as Soil organic matter and Grain yield with his study of Yield. His Fertilizer research incorporates themes from DNS root zone, Variable Rate Application, Lint and High spatial resolution. He has researched Optical reflectance in several fields, including Zea mays, Remote sensing and Sowing.

Between 2015 and 2020, his most popular works were:

  • Algorithms for In-Season Nutrient Management in Cereals (44 citations)
  • Efficiency of chlorophyll in gross primary productivity: A proof of concept and application in crops. (19 citations)
  • Nitrogen uptake and N-use efficiency of Mediterranean cotton under varied deficit irrigation and N fertilization (18 citations)

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

  • Agronomy
  • Botany
  • Fertilizer

James S. Schepers mainly investigates Agronomy, Fertilizer, Canopy, Cereal grain and Randomized block design. His work blends Agronomy and Primary production studies together. His study in Fertilizer is interdisciplinary in nature, drawing from both Cropping system, Crop yield, Topsoil and Lint.

His research in Canopy intersects with topics in Photosynthesis, Chlorophyll, Vegetation and Phenology. The concepts of his Cereal grain study are interwoven with issues in Growing degree-day, N management, Crop, Nutrient management and Cropping. His Randomized block design research is multidisciplinary, incorporating elements of Precision agriculture, Winter wheat, Leaching, High spatial resolution and Water balance.

Best Publications

  • Remote Sensing for Crop Management

    Paul J. Pinter;Jerry L. Hatfield;James S. Schepers;Edward M. Barnes

  • Application of Spectral Remote Sensing for Agronomic Decisions

    J. L. Hatfield;Anatoly A. Gitelson;James S. Schepers;C. L. Walthall

  • In-Season Prediction of Potential Grain Yield in Winter Wheat Using Canopy Reflectance

    William R. Raun;John B. Solie;Gordon V. Johnson;Marvin L. Stone

  • Use of Remote-Sensing Imagery to Estimate Corn Grain Yield

    John F. Shanahan;James S. Schepers;Dennis D. Francis;Gary E. Varvel

  • Comparison of corn leaf nitrogen concentration and chlorophyll meter readings

    J. S. Schepers;D. D. Francis;M. Vigil;F. E. Below

  • Use of a Chlorophyll Meter to Monitor Nitrogen Status and Schedule Fertigation for Corn

    T.M. Blackmer;J.S. Schepers

  • Remote estimation of nitrogen and chlorophyll contents in maize at leaf and canopy levels

    Michael Schlemmer;Anatoly A. Gitelson;James S. Schepers;Richard B. Ferguson

  • Light Reflectance Compared with Other Nitrogen Stress Measurements in Corn Leaves

    Tracy M. Blackmer;James S. Schepers;Gary E. Varvel

  • Optical Sensor‐Based Algorithm for Crop Nitrogen Fertilization

    W. R. Raun;J. B. Solie;M. L. Stone;K. L. Martin

  • Remotely measuring chlorophyll content in corn leaves with differing nitrogen levels and relative water content

    Michael R. Schlemmer;Dennis D. Francis;J.F. Shanahan;James S. Schepers

  • Ability for In‐Season Correction of Nitrogen Deficiency in Corn Using Chlorophyll Meters

    Gary E. Varvel;James S. Schepers;Dennis D. Francis

  • Responsive in-season nitrogen management for cereals

    J. F. Shanahan;N. R. Kitchen;W. R. Raun;J. S. Schepers

  • Nitrogen Deficiency Detection Using Reflected Shortwave Radiation from Irrigated Corn Canopies

    Tracy M. Blackmer;James S. Schepers;Gary E. Varvel;Elizabeth A. Walter-Shea

  • Appropriateness of management zones for characterizing spatial variability of soil properties and irrigated corn yields across years

    Aaron R. Schepers;John F. Shanahan;Mark A. Liebig;James S. Schepers

  • Monitoring Maize (Zea mays L.) Phenology with Remote Sensing

    Andrés Viña;Anatoly A. Gitelson;Donald C. Rundquist;Galina P. Keydan

  • Relationships between gross primary production, green LAI, and canopy chlorophyll content in maize: Implications for remote sensing of primary production

    Anatoly A. Gitelson;Yi Peng;Yi Peng;Timothy J. Arkebauer;James Schepers

  • Active Sensor Reflectance Measurements of Corn Nitrogen Status and Yield Potential

    Fernando Solari;John Shanahan;Richard B. Ferguson;James S. Schepers

  • Transmittance and Reflectance Measurements of CornLeaves from Plants with Different Nitrogen and Water Supply

    James S. Schepers;T. M. Blackmer;Wallace Wilhelm;M. Resende

  • Detection of Phosphorus and Nitrogen Deficiencies in Corn Using Spectral Radiance Measurements

    S. L. Osborne;S. L. Osborne;J. S. Schepers;D. D. Francis;M. R. Schlemmer

  • Use of Spectral Radiance to Estimate In-Season Biomass and Grain Yield in Nitrogen- and Water-Stressed Corn.

    S.L. Osborne;James S. Schepers;D.D. Francis;Michael R. Schlemmer

  • Agronomic Responses of Corn Hybrids from Different Eras to Deficit and Adequate Levels of Water and Nitrogen

    Patrick M. O’Neill;John F. Shanahan;James S. Schepers;Bob Caldwell

  • Techniques for monitoring crop nitrogen status in corn

    T. M. Blackmer;J. S. Schepers

  • Non-Destructive Determination of Maize Leaf and Canopy Chlorophyll Content

    Veronica Ciganda;Anatoly A. Gitelson;James S. Schepers

  • Derivation of a Variable Rate Nitrogen Application Model for In-Season Fertilization of Corn

    K. H. Holland;J. S. Schepers

  • Post-Anthesis Nitrogen Loss from Corn

    D. D. Francis;J. S. Schepers;M. F. Vigil

  • An Algorithm for Corn Nitrogen Recommendations Using a Chlorophyll Meter Based Sufficiency Index

    Gary E. Varvel;Wally Wilhelm;J. F. Shanahan;James S. Schepers

Frequent Co-Authors

Richard B. Ferguson
Richard B. Ferguson University of Nebraska–Lincoln
Anatoly A. Gitelson
Anatoly A. Gitelson University of Nebraska–Lincoln
William R. Raun
William R. Raun Oklahoma State University
Newell R. Kitchen
Newell R. Kitchen Agricultural Research Service
Gary E. Varvel
Gary E. Varvel University of Nebraska–Lincoln
John B. Solie
John B. Solie Oklahoma State University
John W. Doran
John W. Doran University of Nebraska–Lincoln
John E. Sawyer
John E. Sawyer Iowa State University
Charles A. Shapiro
Charles A. Shapiro University of Nebraska–Lincoln
Kent M. Eskridge
Kent M. Eskridge University of Nebraska–Lincoln

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