Tony J Vyn

Professor of Agronomy

Department​: Agronomy
Phone: 765.496.3757
Fax: 765.496.2926
Office: Lilly 3-450B
Area of Expertise:
Cropping Systems, Tillage​




In the News

 Jul 2017 | Scientists Identify Link Between Plant Nitrogen Uptake and Reduction in Greenhouse Gas Emissions  

New Extension Publication

 May 2018 | McClellan Maaz, T., R. A. Omonode, and T.J. Vyn. 2018. Can lower nitrogen balances and greater recovery by corn reduce N2O emissions? Better Crops 102 (2): 27-30.                             
 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

 Jan 2018 | Keys to Big Corn: A Lifelong Learning Process | Corn School, Real Agriculture | Southwest Agricultural Conference | Ridgetown, Ontario, Canada
 Jan 2017 | Potassium Placement Strategies for Optimum Nutrient Balance in Modern Corn Hybrids | Frontiers of Potassium Science Conference | Rome, Italy
 Mar 2016 | Deep Banding of P and K for More Sustainable Corn Production | Corn School, Real Agriculture | Ontario CCA Annual Conference | London, Ontario, Canada
 Dec 2014 | Adjusting Nutrient Management to Modern Corn Hybrids: Achieving Balance​ | 2014 Alabama Corn Short Course | Auburn, Alabama 
 Jan 2013 | Managing Potassium and Nitrogen for Corn in Dryer Soil Conditions​ | Corn School, Real Agriculture | Southwest Agricultural Conference | ​ Ridgetown, Ontario, Canada
 Jan 2013 | Managing Your Corn for Drought Tolerance​ | Corn School, Real Agriculture | Southwest Agricultural Conference | Ridgetown, Ontario, Canada 

Recent Journa​l Publications

 ​Lifetime count: > 110 (past three years listed below)   

  • 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): 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​


Department of Agronomy, 915 West State Street, West Lafayette, IN 47907-2053 USA, (765) 494-4773

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