Tony J Vyn
Henry A. Wallace Chair in Crop Sciences
Professor of Agronomy
Department: Agronomy
Phone: 765.496.3757
Fax: 765.496.2926
Office: Lilly Hall, Room# 3-450B
Complete List of Publications
Top Row: Late nitrogen (N) application in
Indiana’s corn production systems that are enabled by high clearance equipment,
and that permit more synchrony between N fertilizer application and the timing
of plant N uptake in modern corn hybrids. Middle Row [left to right]: Strip-till
planting an integrated field trial near West Lafayette, IN involving corn
hybrids from different decades seeded at multiple plant densities (April 2014),
Dr. Tony J. Vyn with graduate student group (May 2014). Bottom Row
[left to right]: Dr. Tony J. Vyn with post-doctoral students and
visiting scholars from Brazil, China, Hungary and Nigeria (March
2014), Dr. Tony J. Vyn with graduate student group (June 2018)
In the News
Aug 2018 | Vyn Appointed Henry A. Wallace Chair in Crop Sciences
Dr. Tony
J. Vyn, Henry A. Wallace Chair in Crop Sciences poses with Provost Jay
Akridge at the Board of Trustees Meeting on August 3, 2018.
Jul 2017 | Scientists Identify Link Between Plant Nitrogen Uptake and Reduction in Greenhouse Gas Emissions
New Extension Publications
Aug 2017 | August, 2017. Mueller, S.M. and T.J. Vyn. 2017. The effects of late-season nitrogen applications in corn. Purdue Extension AY-364-W
Featured Videos
Ontario, Canada
Recent Journal Publications
Lifetime count: > 110 (past three years listed below)
- Omonode, R.A. and T.J. Vyn. 2019. Tillage and nitrogen source impacts on relationships between nitrous oxide emission and nitrogen recovery efficiency in corn. J.OEQ doi:10.2134/jeq2018.05.0188 Open Access View the Publication
- Mueller, S.M. and T.J. Vyn*. 2018. Physiological constraints to realizing maize grain yield recovery with silking-stage nitrogen fertilizer applications. Field Crops Research 228: 102-109. https://doi.org/10.1016/j.fcr.2018.08.025 Open Access
- Mueller, S.M.*, H.R. Pasley, L. Olmedo Pico, S.D. Armstrong, R. Sripada and T.J. Vyn. 2018. Re-evaulation of soil N sampling strategy effects on statistical power. Commun. Soil Sci. & Plant Anal. Published July 9, 2018. View the Publication
- Mueller, S.M., and T.J. Vyn. 2018. Can late-split nitrogen application increase ear nitrogen accumulation rate during the critical period in maize? Crop Science 58:1-12. doi:10.2135/cropsci2017.0200118 Open Accces. View the Publication
- Chen, Keru, and Tony J. Vyn*. 2017. Post-silking factor consequences for N efficiency changes over 38 years of commercial maize hybrids. Frontiers in Plant Science (8:1737 1-18) View the Publication
- Li, G., B. Zhao, S., Dong, J. Zhang, P. Liu and T.J. Vyn. 2017. Impact of controlled release on urea on maize yield and nitrogen use efficiency under different water conditions. PLoS ONE 12 (7): doi.org/10.1371/journal.pone.0181774 View the Publication
- Mueller, S.M., J. Camberato, C. Messina, J. Shanahan, H. Zhang and T.J. Vyn*. 2017. Late-split N applications increased maize plant N recovery but not yield under moderate to high N rates. Agron. J. 109:2589-2699. doi: 10.2134/agronj2017.05.0282 View the Publication
- de Oliveira Silva, A., J.J. Camberato, T. Coram, T. Filley, and T.J. Vyn*. 2017. Applicability of a "multi-stage pulse labeling" 15N approach to phenotype N dynamics in maize plant components during the growing season. Front. Plant Sci. 8: 1-17. doi: 10.3389/fpls.2017.01360 View the Publication
- *Kovacs,P., and T.J. Vyn*. 2017. Relationships between ear-leaf nutrient concentrations and silking and corn biomass and grain yields at maturity. Agron. J. 109: 2898-2906. doi: 10.2134/agronj2017.02.0119 View the Publication
- Omonode.R.A., A.D. Halvorson, B. Gagnon, and T.J. Vyn*. 2017. Achieving lower nitrogen balance and higher nitrogen recovery efficiency reduces nitrous oxide emissions in North America's maize cropping systems. Frontiers in Plant Science 8:1080. doi: 10.3389/fpls.2017.01080 View the Publication
- Chen.K.*, J.J. Camberato, and T.J. Vyn*. 2017. Maize grain yield and kernel component relationships to morphophysiological hybrids separated by four decades. Crop Science 57 (3): 1-17.DOI: 10.3235/cropsci2016.06.0540
View the Publication
- Chen, K.* J.J. Camberato, M.R. Tuinstra, S.V. Kumudini, M. Tollenaar, and T.J. Vyn*. 2016. Genetic improvement in density and nitrogen stress tolerance traits over 38 years of commercial maize hybrid release. Field Crops Res. 196 438-451. doi: 10.1016/j.fer2016 07.025. View the Publication
- Mueller, S.M.* and T.J. Vyn* .2016. Maize plant resilience to N stress and post-silking N capacity changes over time: A review. Frontiers in Plant Science 7:53 1-14 View the Publication
- Chen,K., Kumudini, S.V., Tollenar, M., and Vyn, T.J*, 2015. Plant biomass and nitrogen partitioning changes between silking and maturity in newer versus older maize hybrids. Field Crops Research. 183:315-328. View the Publication
- Kovacs, P.*, G.E. Van Scoyoc, T.A. Doerge, J.J. Camberato, and T.J. Vyn*. 2015. Anhydrous Ammonia Timing and Rate Effects on Maize N Use Efficiencies. Agronomy Journal 107: 1205-1214. doi:10.2134/agronj14.0350 View the Publication
- Omonode, R.A*, Kovacs, P., & Vyn, T.J.* 2015. Tillage and nitrogen rate effects on area-and yield-scaled nitrous oxide emissions from pre-plant anhydrous ammonia. Agronomy Journal 107:605-614, doi: 10.2134/agronj14.0440 View the Publication
Non-refereed Conference Proceedings
- Kovacs, P.,
G.E. Van Scoyoc, T.A. Doerge, J.J. Camberato, and T.J. Vyn.
2012. Consequences of shallow NH3 placement and timing on N use
efficiencies in corn production. Proceedings, 42nd North Central
Extension-Industry Soil Fertility Conference, Des Moines, Iowa. November 14-15,
2012. Pages 183-189. View the Publication