| Nitrogen application influences the critical period for weed control in corn SP Evans, SZ Knezevic, JL Lindquist, CA Shapiro, EE Blankenship Weed Science 51 (3), 408-417, 2003 | 433 | 2003 |
| Corn response to nitrogen rate, row spacing, and plant density in eastern Nebraska CA Shapiro, CS Wortmann Agronomy journal 98 (3), 529-535, 2006 | 299 | 2006 |
| Glyphosate‐resistant soybean cultivar yields compared with sister lines RW Elmore, FW Roeth, LA Nelson, CA Shapiro, RN Klein, SZ Knezevic, ... Agronomy Journal 93 (2), 408-412, 2001 | 267* | 2001 |
| Soil organic carbon: The value to soil properties H Blanco-Canqui, CA Shapiro, CS Wortmann, RA Drijber, M Mamo, ... Journal of Soil and Water Conservation 68 (5), 129A-134A, 2013 | 244 | 2013 |
| Effect of growth promotants on the occurrence of endogenous and synthetic steroid hormones on feedlot soils and in runoff from beef cattle feeding operations SL Bartelt-Hunt, DD Snow, WL Kranz, TL Mader, CA Shapiro, SJ Donk, ... Environmental Science & Technology 46 (3), 1352-1360, 2012 | 176 | 2012 |
| Fertilizer suggestions for corn CA Shapiro, RB Ferguson, GW Hergert, A Dobermann, CS Wortmann Cooperative Extension, Institute of Agriculture and Natural Resources …, 2003 | 167 | 2003 |
| The effects of manure application on soil aggregation CS Wortmann, CA Shapiro Nutrient Cycling in Agroecosystems 80, 173-180, 2008 | 161 | 2008 |
| Influence of nitrogen and duration of weed interference on corn growth and development SP Evans, SZ Knezevic, JL Lindquist, CA Shapiro Weed Science 51 (4), 546-556, 2003 | 132 | 2003 |
| Nitrogen use efficiency of irrigated corn for three cropping systems in Nebraska CS Wortmann, DD Tarkalson, CA Shapiro, AR Dobermann, RB Ferguson, ... Agronomy Journal 103 (1), 76-84, 2011 | 113 | 2011 |
| High‐yielding corn response to applied phosphorus, potassium, and sulfur in Nebraska CS Wortmann, AR Dobermann, RB Ferguson, GW Hergert, CA Shapiro, ... Agronomy Journal 101 (3), 546-555, 2009 | 99 | 2009 |
| Nitrate accumulation and movement under deficit irrigation in soil receiving cattle manure and commercial fertilizer DD Tarkalson, JO Payero, SM Ensley, CA Shapiro Agricultural water management 85 (1-2), 201-210, 2006 | 95 | 2006 |
| Nitrogen and irrigation management practices to minimize nitrate leaching from irrigated corn RB Ferguson, CA Shapiro, GW Hergert, WL Kranz, NL Klocke, DH Krull Journal of Production Agriculture 4 (2), 186-192, 1991 | 95 | 1991 |
| Large-scale on-farm implementation of soil moisture-based irrigation management strategies for increasing maize water productivity S Irmak, MJ Burgert, HS Yang, KG Cassman, DT Walters, WR Rathje, ... Transactions of the ASABE 55 (3), 881-894, 2012 | 91 | 2012 |
| Standardized precipitation index and nitrogen rate effects on crop yields and risk distribution in maize CF Yamoah, DT Walters, CA Shapiro, CA Francis, MJ Hayes Agriculture, ecosystems & environment 80 (1-2), 113-120, 2000 | 89 | 2000 |
| Using a chlorophyll meter to improve N management CA Shapiro, JS Schepers, DD Francis, JF Shanahan University of Nebraska-Lincoln Extension, Institute of Agriculture and …, 2006 | 77 | 2006 |
| Current knowledge on the environmental fate, potential impact, and management of growth-promoting steroids used in the US beef cattle industry S Biswas, CA Shapiro, WL Kranz, TL Mader, DP Shelton, DD Snow, ... Journal of soil and water conservation 68 (4), 325-336, 2013 | 70 | 2013 |
| Yield Loss Due to Simulated Hail Damage on Corn: A Comparison of Actual and Predicted Values1 CA Shapiro, TA Peterson, AD Flowerday Agronomy Journal 78 (4), 585-589, 1986 | 70 | 1986 |
| Does inorganic nitrogen fertilization improve soil aggregation? Insights from two long‐term tillage experiments H Blanco‐Canqui, RB Ferguson, CA Shapiro, RA Drijber, DT Walters Journal of Environmental Quality 43 (3), 995-1003, 2014 | 68 | 2014 |
| Soil testing interpretations: Sufficiency vs. build‐up and maintenance RA Olson, FN Anderson, KD Frank, PH Grabouski, GW Rehm, CA Shapiro Soil testing: Sampling, correlation, calibration, and interpretation 21, 41-52, 1987 | 67 | 1987 |
| No‐till row crop response to starter fertilizer in eastern Nebraska: I. Irrigated and rainfed corn CS Wortmann, SA Xerinda, M Mamo, CA Shapiro Agronomy journal 98 (1), 156-162, 2006 | 66* | 2006 |
