2026 Kurt A. Spokas: Plant Science and Agronomy Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	Current World Ranking	National Ranking	Current National Ranking	Publications	Citations
Environmental Sciences	65	2170	2070	883	815	205	19538
Plant Science and Agronomy	59	1253	1146	327	283	164	15983

Kurt A. Spokas 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 Kurt A. Spokas sits on this spectrum.

36 publications 467+

This scientist: 164 publications — 64th percentile

64% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 467 publications or more.

Kurt A. Spokas 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 Kurt A. Spokas sits on this spectrum.

30 D-Index 109+

This scientist: 59 D-Index — 81st percentile

81% 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

2017 - Fellow of the Soil Science Society of America (SSSA)
2017 - Fellow of the American Society of Agronomy (ASA)

Overview

Kurt A. Spokas is affiliated with the United States Department of Agriculture in the United States. Their research primarily focuses on environmental science and agricultural and biological sciences, with significant contributions in subfields including soil science, pollution, environmental chemistry, biomaterials, and geochemistry and petrology.

The scientific work of Kurt A. Spokas covers several main topics, such as:

Soil Carbon and Nitrogen Dynamics
Clay minerals and soil interactions
Coal and Its By-products
Mine drainage and remediation techniques
Soil and Water Nutrient Dynamics
Wastewater Treatment and Nitrogen Removal
Soil and Unsaturated Flow

They have published research in frequent venues including:

Biochar
Applied Soil Ecology
Communications in Soil Science and Plant Analysis
Agricultural & Environmental Letters
PLoS ONE

Kurt A. Spokas has collaborated often with several coauthors, including:

James A. Ippolito
Beatriz Gámiz
D. J. Mulla
J. M. Novak
Thomas F. Ducey

Some recent papers featuring their contributions are:

Feedstock choice, pyrolysis temperature and type influence biochar characteristics: a comprehensive meta-data analysis review, 2020, Biochar
Enhancing Cation Exchange Capacity of Weathered Soils Using Biochar: Feedstock, Pyrolysis Conditions and Addition Rate, 2020, Agronomy
Phytostabilization of acidic mine tailings with biochar, biosolids, lime, and locally-sourced microbial inoculum: Do amendment mixtures influence plant growth, tailing chemistry, and microbial composition?, 2021, Applied Soil Ecology
Biochar changes the bioavailability and bioefficacy of the allelochemical coumarin in agricultural soils, 2020, Pest Management Science
Temperature alters dicyandiamide (DCD) efficacy for multiple reactive nitrogen species in urea-amended soils: Experiments and modeling, 2021, Soil Biology and Biochemistry

Kurt A. Spokas has been recognized by professional societies with fellowships in the Soil Science Society of America and the American Society of Agronomy, both awarded in 2017.

Best Publications

Review of the stability of biochar in soils: predictability of O:C molar ratios

Kurt A Spokas

1294
Citations
Biochar: a synthesis of its agronomic impact beyond carbon sequestration.

Kurt A. Spokas;Keri B. Cantrell;Jeffrey M. Novak;David W. Archer

1133
Citations
Impacts of woodchip biochar additions on greenhouse gas production and sorption/degradation of two herbicides in a Minnesota soil.

K.A. Spokas;W.C. Koskinen;J.M. Baker;D.C. Reicosky

883
Citations
Feedstock choice, pyrolysis temperature and type influence biochar characteristics: a comprehensive meta-data analysis review

James A. Ippolito;Liqiang Cui;Claudia Kammann;Nicole Wrage-Mönnig

726
Citations
Impacts of Sixteen Different Biochars on Soil Greenhouse Gas Production

Kurt A. Spokas;Donald C. Reicosky

675
Citations
Microbial methane oxidation processes and technologies for mitigation of landfill gas emissions.

Charlotte Scheutz;Peter Kjeldsen;Jean E. Bogner;Alex De Visscher

674
Citations
METHANE MASS BALANCE AT THREE LANDFILL SITES: WHAT IS THE EFFICIENCY OF CAPTURE BY GAS COLLECTION SYSTEMS?

K. Spokas;J. Bogner;J.P. Chanton;M. Morcet

566
Citations
Qualitative analysis of volatile organic compounds on biochar.

Kurt A. Spokas;Jeffrey M. Novak;Catherine E. Stewart;Keri B. Cantrell

563
Citations
Characteristics and Applications of Biochar for Environmental Remediation: A Review

Tao Xie;Krishna R. Reddy;Chengwen Wang;Erin Yargicoglu

557
Citations
Biochar, soil and land-use interactions that reduce nitrate leaching and N2O emissions: A meta-analysis.

Nils Borchard;Michael Schirrmann;Maria Luz Cayuela;Claudia Kammann

541
Citations
Physical and chemical characterization of waste wood derived biochars.

Erin N. Yargicoglu;Bala Yamini Sadasivam;Krishna R. Reddy;Kurt Spokas

474
Citations
Ethylene: potential key for biochar amendment impacts

Kurt A. Spokas;Kurt A. Spokas;John M. Baker;John M. Baker;Donald C. Reicosky

396
Citations
Biochar’s role as an alternative N-fertilizer: ammonia capture

Kurt A. Spokas;Jeff M. Novak;Rodney T. Venterea

395
Citations
Nitrogen oxide and methane emissions under varying tillage and fertilizer management.

Rodney T. Venterea;Martin Burger;Kurt A. Spokas

391
Citations
Physical Disintegration of Biochar: An Overlooked Process

K. A. Spokas;K. A. Spokas;J. M. Novak;C. A. Masiello;M. G. Johnson

353
Citations
Activated Carbon, Biochar and Charcoal: Linkages and Synergies across Pyrogenic Carbon’s ABC s

Nicolas Hagemann;Kurt A. Spokas;Hans-Peter Schmidt;Ralf Kägi

315
Citations
Challenges and opportunities for mitigating nitrous oxide emissions from fertilized cropping systems

Rodney T. Venterea;Rodney T. Venterea;Ardell D. Halvorson;Newell Kitchen;Mark A. Liebig

314
Citations
Landfills as atmospheric methane sources and sinks

J. Bogner;K. Spokas;E. Burton;R. Sweeney

304
Citations
Predicting the impact of biochar additions on soil hydraulic properties

T.J. Lim;K.A. Spokas;K.A. Spokas;G. Feyereisen;J.M. Novak

286
Citations
Impact of biochar field aging on laboratory greenhouse gas production potentials.

Kurt A. Spokas

279
Citations
Kinetics of Methane Oxidation in a Landfill Cover Soil: Temporal Variations, a Whole-Landfill Oxidation Experiment, and Modeling of Net CH4 Emissions

Jean E. Bogner;Kurt A. Spokas;Elizabeth A. Burton

261
Citations
Landfill CH4: Rates, fates, and role in global carbon cycle

J. Bogner;K. Spokas

242
Citations