Ciampitti*, I. A., and T.J. Vyn. 2014. Understanding global and historical nutrient use efficiencies for closing maize yield gaps. Agronomy Journal 106:634-644. doi:10.2134/agronj14.0025. Just Published version online Sept. 15, 2014. PDF
Kovacs, P., and T.J. Vyn. 2014. Full-season retrospectives on causes of plant-to-plant variability in maize grain yield response to nitrogen and tillage. Agronomy Journal 2014 106 (5):1746-1757. doi:10.2134/agronj14.0173. Abstract: https://dl.sciencesocieties.org/publications/aj/abstracts/106/5/1746?search-result=1
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F. H. Andrade, K. J. Boote, G. A. Brown, K. A. Dzotsi, G. O. Edmeades, T.
Gocken, M. Goodwin, A. L. Halter, G. L. Hammer, J. L. Hatfield, J. W. Jones, A.
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Parent, C. O. Stöckle, F. Tardieu, P. R. Thomison, D. J. Timlin, T. J. Vyn, D.
Wallach, H. S. Yang and M. Tollenaar. 2014. Predicting maize phenology: intercomparison of functions for developmental response to temperature. Agronomy Journal 106: 2087-2097. doi: 10.2134/agronj14.0200. Online Sept. 15, 2014. PDF
Ciampitti*, I. A., and T.J. Vyn. 2014. Nutrient sufficiency concepts for modern corn hybrids: Impacts of management practices and yield levels. Crop Management doi:
10.2134/CM-2013-0022. First Look Article posted January 30, 2014. PDF
Burzaco*, J. P., I. A. Ciampitti, and T. J. Vyn*. 2014. Nitrapyrin impacts on maize yield and nitrogen use efficiency with spring-applied nitrogen: Field studies vs. meta-analysis comparison. Agronomy Journal 106:753-760. doi:10.2134/agronj2013.0043 (First published online as a “First Look” manuscript in November, 2013). https://www.agronomy.org/publications/aj/abstracts/106/2/753
Kovacs*, P., G.E. Van Scoyoc, T. A. Doerge, J.J. Camberato, and T.J. Vyn*. 2014. Pre-plant anhydrous ammonia placement consequences on no-till versus conventional maize growth and nitrogen responses. Agronomy Journal 106:634-644. (First published online as a “First Look” manuscript in November, 2013). doi:10.2134/agronj2013.0356 Open Access https://dl.sciencesocieties.org/publications/aj/abstracts/106/2/634
Boyer, J.S., P. B. Byrne, K.G. Cassman, M. Cooper, D. Delmer, T. Greene, F. Gruis, J. Habben, N. Hausmann, N. Kenny, R. Lafitte, S. Paszkiewicz, D. Porter, A. Schlegel, J. Schussler, T. Setter, J. Shanahan, R.E. Sharp, T.J. Vyn, D. Warner, and J. Gaffney*. 2013. The U.S. drought of 212 in perspective: A call to action. Global Food Security 2:139-143. http://dx.doi.org/10.1016/j.gfs.2013.08.002
Burzaco, J. P., D.R. Smith, and T.J. Vyn*. 2013. Nitrous oxide emissions in Midwest US maize production vary widely with band-injected N fertilizer rates, timing and nitrapyrin presence. Environmental Research Letters 8 (3): 1-11. doi:10.1088/1748-9326/8/3/035031 Open Access http://iopscience.iop.org/1748-9326/8/3/035031/
Ciampitti*, I. A., S. T. Murrell, J. J. Camberato, M. Tuinstra, Y. Xia, P. Friedemann, and T. J. Vyn*. 2013. Physiological dynamics of maize nitrogen uptake and partitioning in response to plant density and nitrogen stress factors: I. Vegetative phase. Crop Science, 53(6): 2588-2602. doi:10.2135/cropsci2013.01.0040 https://dl.sciencesocieties.org/publications/cs/abstracts/53/5/2105
Ciampitti*, I. A., S. T. Murrell, J. J. Camberato, M. Tuinstra, Y. Xia, P. Friedemann, and T. J. Vyn*. 2013. Physiological dynamics of maize nitrogen uptake and partitioning in response to plant density and nitrogen stress factors: II. Reproductive phase. Crop Science, 53(6): 2588-2602. doi:10.2135/cropsci2013.01.0041 https://dl.sciencesocieties.org/publications/cs/abstracts/53/6/2588
Seo, J., T.J. Vyn, A. Gal, and D.R. Smith. 2012. Soil greenhouse gas emissions from three decades long-term experimental field of corn-soybean rotation and tillage treatments.Korean J. Crop Science 57(1): 89-97.
Robles, M. I.A. Ciampitti, and T.J. Vyn. 2012. Responses of maize hybrids to twin-row spatial arrangement at multiple plant densities. Agron. J. 104:1747-1756.doi:10.2134/agronj2012.0231.
Ciampitti, I. A., H. Hao, P. Friedemann, and T.J. Vyn. 2012. Potential physiological frameworks for mid-season field phenotyping of final plant N uptake, N use efficiency and grain yield in maize. Crop Science 52: 2728-2742.
Ciampitti, I.A., and T.J. Vyn. 2012. Physiological perspectives of changes over time in maize yield dependency on nitrogen uptake and associated nitrogen efficiencies: A review. Field Crops Res. 133: 48-67. http://www.sciencedirect.com/science/article/pii/S0378429012001013