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D. Olk · SciRah

Researcher profile · Semantic Scholar

D. Olk

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D. Olk — researcher profile on SciRah

h-index: 45
Works: 127
Citations: 6,847

Most-cited papers

Abundant and stable char residues in soils: implications for soil fertility and carbon sequestration.
Jingdong Mao, Robert L. Johnson, J. Lehmann, D. Olk +3 more
2012Environmental Science and Technology295 citations Open access
Semantic Scholar
Plant litter quality affects the accumulation rate, composition, and stability of mineral-associated soil organic matter
S. Córdova, D. Olk, Ranae N. Dietzel, K. Mueller +2 more
2018Soil Biology and Biochemistry229 citations Open access
Semantic Scholar
Environmental and Agricultural Relevance of Humic Fractions Extracted by Alkali from Soils and Natural Waters.
D. Olk, P. Bloom, E. Perdue, D. McKnight +7 more
2019Journal of Environmental Quality182 citations Open access
Semantic Scholar
Maximum soil organic carbon storage in Midwest U.S. cropping systems when crops are optimally nitrogen-fertilized
H. Poffenbarger, D. Barker, M. Helmers, F. Miguez +4 more
2017PLoS ONE169 citations Open access
Semantic Scholar
Advanced solid-state NMR spectroscopy of natural organic matter.
Jingdong Mao, Xiao-Yan Cao, D. Olk, Wen-Ying Chu +1 more
2017Progress in nuclear magnetic resonance spectroscopy149 citations Open access
Semantic Scholar
Overview of the symposium proceedings, meaningful pools in determining soil carbon and nitrogen dynamics
D. Olk, E. Gregorich
2006148 citations
Semantic Scholar
Organic Forms of Soil Nitrogen
D. Olk
2015142 citations
Semantic Scholar
Influence of animal manure application on the chemical structures of soil organic matter as investigated by advanced solid-state NMR and FT-IR spectroscopy
Jingdong Mao, D. Olk, Xiaowen Fang, Zhongqi He +1 more
2008142 citations
Semantic Scholar
Nitrogen Fertilizer Suppresses Mineralization of Soil Organic Matter in Maize Agroecosystems
Navreet K. Mahal, W. Osterholz, F. Miguez, H. Poffenbarger +4 more
2019Frontiers in Ecology and Evolution128 citations Open access
Semantic Scholar
A new standardized method for quantification of humic and fulvic acids in humic ores and commercial products.
R. T. Lamar, D. Olk, Lawrence Mayhew, P. Bloom
2014Journal of AOAC International117 citations
Semantic Scholar
Humic products in agriculture: potential benefits and research challenges—a review
D. Olk, D. Dinnes, J. Rene Scoresby, Chad R. Callaway +1 more
2018Journal of Soils and Sediments115 citations
Semantic Scholar
Why Phenolic Acids Are Unlikely Primary Allelochemicals in Rice
M. Olofsdotter, Malou Rebulanan, A. Madrid, Da-Li Wang +2 more
2004Journal of Chemical Ecology107 citations
Semantic Scholar
Chemical Composition of Defatted Cottonseed and Soy Meal Products
Zhongqi He, Hai-Lin Zhang, D. Olk
2015PLoS ONE101 citations Open access
Semantic Scholar
Organic Forms of Nitrogen
D. Olk
200796 citations
Semantic Scholar
Chemical stabilization of soil organic nitrogen by phenolic lignin residues in anaerobic agroecosystems
D. Olk, K. Cassman, K. Schmidt-Rohr, M. Anders +2 more
200686 citations
Semantic Scholar
Forms and Lability of Phosphorus in Humic Acid Fractions of Hord Silt Loam Soil
Zhongqi He, D. Olk, B. Cade-Menun
201184 citations
Semantic Scholar
Chemical composition of organic matter in a deep soil changed with a positive priming effect due to glucose addition as investigated by 13C NMR spectroscopy
Yueling Zhang, Shuihong Yao, Jingdong Mao, D. Olk +2 more
201579 citations
Semantic Scholar
Using Humic Fractions to Understand Natural Organic Matter Processes in Soil and Water: Selected Studies and Applications
D. Olk, P. R. Bloom, M. De Nobili, Yona Chen +3 more
2019Journal of Environmental Quality76 citations Open access
Semantic Scholar
Legacy effects of long-term nitrogen fertilizer application on the fate of nitrogen fertilizer inputs in continuous maize
H. Poffenbarger, J. Sawyer, D. Barker, D. Olk +2 more
2018Agriculture, Ecosystems & Environment76 citations Open access
Semantic Scholar
A Chemical Fractionation for Structure–Function Relations of Soil Organic Matter in Nutrient Cycling
D. Olk
200668 citations
Semantic Scholar
Formation efficiency of soil organic matter from plant litter is governed by clay mineral type more than plant litter quality
Yuzhi Xu, Kai Liu, Shuihong Yao, Yueling Zhang +8 more
2022Geoderma67 citations
Semantic Scholar
Developments in Agricultural Soil Quality and Health: Reflections by the Research Committee on Soil Organic Matter Management
M. Wander, L. Cihacek, M. Coyne, R. Drijber +10 more
2019Frontiers in Environmental Science66 citations Open access
Semantic Scholar
Solid-State NMR Analysis of Soil Organic Matter Fractions from Integrated Physical-Chemical Extraction
Xiao-Yan Cao, D. Olk, M. Chappell, C. Cambardella +2 more
201161 citations
Semantic Scholar
Whole-profile soil organic matter content, composition, and stability under cropping systems that differ in belowground inputs
H. Poffenbarger, D. Olk, C. Cambardella, Jordan Kersey +4 more
202058 citations
Semantic Scholar
Inhibition of nitrogen mineralization in young humic fractions by anaerobic decomposition of rice crop residues
D. Olk, M. Samson, P. Gapas
200755 citations
Semantic Scholar
ACCUMULATION OF LIGNIN RESIDUES IN ORGANIC MATTER FRACTIONS OF LOWLAND RICE SOILS: A PYROLYSIS-GC-MS STUDY
D. Olk, M. M. C. Dancel, E. Moscoso, R. R. Jimenez +1 more
200252 citations
Semantic Scholar
Carbohydrates and Amino Compounds as Short‐Term Indicators of Soil Management
H. Abdelrahman, C. Cocozza, D. Olk, D. Ventrella +1 more
201750 citations
Semantic Scholar
Fall Conservation Deep Tillage Stabilizes Maize Residues into Soil Organic Matter
A. B. Wingeyer, D. Walters, R. Drijber, D. Olk +4 more
201246 citations
Semantic Scholar
Interpreting fertilizer-use efficiency in relation to soil nutrient-supplying capacity, factor productivity, and agronomic efficiency
D. Olk, K. Cassman, G. Simbahan, P. Sta. Cruz +4 more
2004Nutrient Cycling in Agroecosystems44 citations
Semantic Scholar
Changes to soil organic N dynamics with leguminous woody plant encroachment into grasslands
C. Creamer, T. Filley, D. Olk, D. Stott +2 more
2013Biogeochemistry43 citations
Semantic Scholar
Characterization of Humic Acid Fractions Improves Estimates of Nitrogen Mineralization Kinetics for Lowland Rice Soils
Vệ Bảo Nguyễn, D. Olk, K. Cassman
200443 citations Open access
Semantic Scholar
Chemical nature of soil organic carbon under different long-term fertilization regimes is coupled with changes in the bacterial community composition in a Calcaric Fluvisol
Dandan Li, Lin Chen, Jisheng Xu, Lei Ma +4 more
2018Biology and Fertility of Soils39 citations
Semantic Scholar
A soil matrix capacity index to predict mineral-associated but not particulate organic carbon across a range of climate and soil pH
A. King, J. Amsili, S. Córdova, Steve Culman +10 more
2023Biogeochemistry38 citations
Semantic Scholar
Structural evidence for soil organic matter turnover following glucose addition and microbial controls over soil carbon change at different horizons of a Mollisol.
Yueling Zhang, Shuihong Yao, Xiao-Yan Cao, K. Schmidt-Rohr +3 more
201833 citations
Semantic Scholar
Foliar application of plant growth-promoting bacteria and humic acid increase maize yields
L. Canellas, Silézio Ferreira da Silva, D. Olk, F. Olivares +2 more
201531 citations
Semantic Scholar
Microbial biomass and organic matter turnover in wetland rice soils
J. Gaunt, H. Neue, K. Cassman, D. Olk +4 more
2004Biology and Fertility of Soils30 citations
Semantic Scholar
Contributions of residue-C and -N to plant growth and soil organic matter pools under planted and unplanted conditions
Zengqiang Li, Bing-Zi Zhao, D. Olk, Z. Jia +3 more
201829 citations
Semantic Scholar
Protein and Fiber Profiles of Cottonseed from Upland Cotton with Different Fertilizations
Zhongqi He, Hai-Lin Zhang, D. Olk, M. Shankle +2 more
201429 citations Open access
Semantic Scholar
Triggering of Methane Production in Rice Soils by Root Exudates
S. Mitra, M. Aulakh, R. Wassmann, D. Olk
200528 citations
Semantic Scholar
Similarities in chemical composition of soil organic matter across a millennia-old paddy soil chronosequence as revealed by advanced solid-state NMR spectroscopy
Zhi-Gao Zhou, Xiao-Yan Cao, K. Schmidt-Rohr, D. Olk +4 more
2013Biology and Fertility of Soils27 citations
Semantic Scholar
Using Anion Chromatography–Pulsed Amperometry to Measure Amino Compounds in Dairy Manure‐Amended Soils
D. Olk, A. Fortuna, C. Honeycutt
200826 citations
Semantic Scholar
Improved Analytical Techniques for Carbohydrates, Amino Compounds, and Phenols: Tools for Understanding Soil Processes
D. Olk
200825 citations
Semantic Scholar
Changes in Labile Fractions of Soil Organic Matter During the Conversion to Organic Farming
H. Abdelrahman, C. Cocozza, D. Olk, D. Ventrella +2 more
202024 citations Open access
Semantic Scholar
Crop Nitrogen Uptake and Soil Phenols Accumulation under Continuous Rice Cropping in Arkansas
D. Olk, M. Anders, T. Filley, C. Isbell
200924 citations
Semantic Scholar
Demonstration of chemical distinction among soil humic fractions using quantitative solid-state 13C NMR.
Jisheng Xu, Bing-Zi Zhao, Zengqiang Li, Wen-Ying Chu +5 more
2019Journal of Agricultural and Food Chemistry23 citations
Semantic Scholar
Nitrogen Mineralization from Humic Acid Fractions in Rice Soils Depends on Degree of Humification
Vệ Bảo Nguyễn, D. Olk, K. Cassman
200423 citations Open access
Semantic Scholar
Enzymatically and Ultraviolet-Labile Phosphorus in Humic Acid Fractions From Rice Soils
Zhongqi He, D. Olk, C. Honeycutt, A. Fortuna
200922 citations
Semantic Scholar
Carbohydrate and Amino Acid Profiles of Cotton Plant Biomass Products
Zhongqi He, D. Olk, H. Tewolde, Hai-Lin Zhang +1 more
201921 citations Open access
Semantic Scholar
Capillary Electrophoresis and Fluorescence Excitation-Emission Matrix Spectroscopy for Characterization of Humic Substances
Zhongqi He, T. Ohno, Feng-Chang Wu, D. Olk +2 more
200821 citations
Semantic Scholar
Soil texture and straw type modulate the chemical structure of residues during four-year decomposition by regulating bacterial and fungal communities
Dandan Li, Bing-Zi Zhao, D. Olk, Jiabao Zhang
202020 citations
Semantic Scholar

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