John E. Sawyer

John E. Sawyer 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 John E. Sawyer sits on this spectrum.

John E. Sawyer 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 John E. Sawyer sits on this spectrum.

Best Publications

• Integrating plant litter quality, soil organic matter stabilization, and the carbon saturation concept

  Michael J. Castellano;Kevin E. Mueller;Daniel C. Olk;John E. Sawyer

  724
  Citations

• Strengths and limitations of Nitrogen rate recommendations for corn and opportunities for improvement

  Thomas F. Morris;T. Scott Murrell;Douglas B. Beegle;James J. Camberato

  347
  Citations

• Concepts of Variable Rate Technology with Considerations for Fertilizer Application

  J. E. Sawyer

  343
  Citations

• Concepts and Rationale for Regional Nitrogen Rate Guidelines for Corn

  John Sawyer;Emerson Nafziger;Gyles Randall;Larry Bundy

  317
  Citations

• Maximum soil organic carbon storage in Midwest U.S. cropping systems when crops are optimally nitrogen-fertilized.

  Hanna J. Poffenbarger;Daniel W. Barker;Matthew J. Helmers;Fernando E. Miguez

  188
  Citations

• Using Relative Chlorophyll Meter Values to Determine Nitrogen Application Rates for Corn

  J. A. Hawkins;J. E. Sawyer;D. W. Barker;J. P. Lundvall

  164
  Citations

• A long‐term nitrogen fertilizer gradient has little effect on soil organic matter in a high‐intensity maize production system

  Kimberly H. Brown;Elizabeth M. Bach;Rhae A. Drijber;Kirsten S. Hofmockel

  163
  Citations

• Nitrogen application to soybean at early reproductive development

  Daniel W. Barker;John E. Sawyer

  163
  Citations

• Effect of nitrogen fertilizer application on growing season soil carbon dioxide emission in a corn-soybean rotation.

  Mahdi M. Al-Kaisi;Marc L. Kruse;John E. Sawyer

  163
  Citations

• Modeling Long-Term Corn Yield Response to Nitrogen Rate and Crop Rotation

  Laila Alejandra Puntel;John E. Sawyer;Daniel W. Barker;Ranae Dietzel

  160
  Citations

• Drought Impact on Crop Production and the Soil Environment: 2012 Experiences from Iowa

  Mahdi Al-Kaisi;Roger Elmore;Jose Guzman;Mark Hanna

  157
  Citations

• Cover Crop Effects on Nitrous Oxide Emissions: Role of Mineralizable Carbon

  David C. Mitchell;Michael J. Castellano;John E. Sawyer;Jose Pantoja

  156
  Citations

• Understanding the DayCent model

  Magdalena Necpálová;Robert P. Anex;Michael N. Fienen;Stephen J. Del Grosso

  151
  Citations

• Nitrogen Fertilizer Suppresses Mineralization of Soil Organic Matter in Maize Agroecosystems

  Navreet K. Mahal;William R. Osterholz;Fernando E. Miguez;Hanna J. Poffenbarger

  132
  Citations

• Corn Nitrogen Fertilization Requirement and Corn–Soybean Productivity with a Rye Cover Crop

  Jose L. Pantoja;Krishna P. Woli;John E. Sawyer;Daniel W. Barker

  132
  Citations

• A General Guide for Crop Nutrient and Limestone Recommendations in Iowa

  Antonio P. Mallarino;John E. Sawyer;Stephen K. Barnhart

  127
  Citations

• Using Active Canopy Sensors to Quantify Corn Nitrogen Stress and Nitrogen Application Rate

  Daniel W. Barker;John E. Sawyer

  122
  Citations

• Use of Anaerobically Digested Swine Manure as a Nitrogen Source in Corn Production

  Esteban R. Loria;John E. Sawyer;Daniel W. Barker;John P. Lundvall

  118
  Citations

• Phosphorus indexing for cropland: Overview and basic concepts of the Iowa phosphorus index

  A. P. Mallarino;B. M. Stewart;J. L. Baker;J. D. Downing

  115
  Citations

• Extractable Soil Phosphorus and Inorganic Nitrogen following Application of Raw and Anaerobically Digested Swine Manure

  Esteban R. Loria;Esteban R. Loria;John E. Sawyer

  111
  Citations

• Soil water during the drought of 2012 as affected by rye cover crops in fields in Iowa and Indiana

  A.L. Daigh;M.J. Helmers;E. Kladivko;X. Zhou

  100
  Citations

• Evaluation of the Illinois Soil Nitrogen Test in the North Central Region of the United States

  C. A. M. Laboski;J. E. Sawyer;D. T. Walters;L. G. Bundy

  69
  Citations