| Opportunities for increased nitrogen-use efficiency from improved resource management in irrigated rice systems KG Cassman, S Peng, DC Olk, JK Ladha, W Reichardt, A Dobermann, ... Field crops research 56 (1-2), 7-39, 1998 | 966 | 1998 |
| Integrating plant litter quality, soil organic matter stabilization, and the carbon saturation concept MJ Castellano, KE Mueller, DC Olk, JE Sawyer, J Six Global change biology 21 (9), 3200-3209, 2015 | 813 | 2015 |
| Internal nutrient efficiencies of irrigated lowland rice in tropical and subtropical Asia C Witt, A Dobermann, S Abdulrachman, HC Gines, W Guanghuo, ... Field Crops Research 63 (2), 113-138, 1999 | 615 | 1999 |
| Crop rotation and residue management effects on carbon sequestration, nitrogen cycling and productivity of irrigated rice systems C Witt, KG Cassman, DC Olk, U Biker, SP Liboon, MI Samson, JCG Ottow Plant and Soil 225 (1), 263-278, 2000 | 443 | 2000 |
| Abundant and stable char residues in soils: implications for soil fertility and carbon sequestration JD Mao, RL Johnson, J Lehmann, DC Olk, EG Neves, ML Thompson, ... Environmental science & technology 46 (17), 9571-9576, 2012 | 410 | 2012 |
| Yield decline and the nitrogen economy of long-term experiments on continuous, irrigated rice systems in the tropics. KG Cassman, SK De Datta, DC Olk, J Alcantara, M Samson, J Descalsota, ... | 334 | 1995 |
| Environmental and agricultural relevance of humic fractions extracted by alkali from soils and natural waters DC Olk, PR Bloom, EM Perdue, DM McKnight, Y Chen, A Farenhorst, ... Journal of environmental quality 48 (2), 217-232, 2019 | 290 | 2019 |
| Changes in chemical properties of organic matter with intensified rice cropping in tropical lowland soil DC Olk, KG Cassman, EW Randall, P Kinchesh, LJ Sanger, JM Anderson European Journal of Soil Science 47 (3), 293-303, 1996 | 265 | 1996 |
| Plant litter quality affects the accumulation rate, composition, and stability of mineral-associated soil organic matter SC Córdova, DC Olk, RN Dietzel, KE Mueller, SV Archontouilis, ... Soil Biology and Biochemistry 125, 115-124, 2018 | 260 | 2018 |
| Overview of the symposium proceedings,“Meaningful pools in determining soil carbon and nitrogen dynamics” DC Olk, EG Gregorich Soil Science Society of America Journal 70 (3), 967-974, 2006 | 216 | 2006 |
| Maximum soil organic carbon storage in Midwest US cropping systems when crops are optimally nitrogen-fertilized HJ Poffenbarger, DW Barker, MJ Helmers, FE Miguez, DC Olk, JE Sawyer, ... Plos one 12 (3), e0172293, 2017 | 215 | 2017 |
| Nitrogen-bonded aromatics in soil organic matter and their implications for a yield decline in intensive rice cropping K Schmidt-Rohr, JD Mao, DC Olk Proceedings of the National Academy of Sciences 101 (17), 6351-6354, 2004 | 204 | 2004 |
| Soil organic matter and the indigenous nitrogen supply of intensive irrigated rice systems in the tropics KG Cassman, A Dobermann, PCS Cruz, GC Gines, MI Samson, ... Plant and soil 182 (2), 267-278, 1996 | 202 | 1996 |
| Advanced solid-state NMR spectroscopy of natural organic matter J Mao, X Cao, DC Olk, W Chu, K Schmidt-Rohr Progress in Nuclear Magnetic Resonance Spectroscopy 100, 17-51, 2017 | 199 | 2017 |
| Influence of animal manure application on the chemical structures of soil organic matter as investigated by advanced solid-state NMR and FT-IR spectroscopy J Mao, DC Olk, X Fang, Z He, K Schmidt-Rohr Geoderma 146 (1-2), 353-362, 2008 | 192 | 2008 |
| Legume decomposition and nitrogen release when applied as green manures to tropical vegetable production systems C Th o¨ nnissen, DJ Midmore, JK Ladha, DC Olk, U Schmidhalter Agronomy Journal 92 (2), 253-260, 2000 | 191 | 2000 |
| On-farm soil N supply and N nutrition in the rice–wheat system of Nepal and Bangladesh C Adhikari, KF Bronson, GM Panuallah, AP Regmi, PK Saha, ... Field Crops Research 64 (3), 273-286, 1999 | 188 | 1999 |
| Nitrogen fertilizer suppresses mineralization of soil organic matter in maize agroecosystems NK Mahal, WR Osterholz, FE Miguez, HJ Poffenbarger, JE Sawyer, ... Frontiers in Ecology and Evolution 7, 59, 2019 | 185 | 2019 |
| Why phenolic acids are unlikely primary allelochemicals in rice M Olofsdotter, M Rebulanan, A Madrid, W Dali, D Navarez, DC Olk Journal of Chemical Ecology 28 (1), 229-242, 2002 | 180 | 2002 |
| A new standardized method for quantification of humic and fulvic acids in humic ores and commercial products RT Lamar, DC Olk, L Mayhew, PR Bloom Journal of AOAC International 97 (3), 721-730, 2014 | 169 | 2014 |
