PUBLICATIONS
Journal Publications
2022
Bagnall, D.K., C.L.S. Morgan, M. Cope, G.M. Bean, S.B. Cappellazzi,.…….T. J. Vyn,………….., C. W. Honeycutt (Total of 106 authors). 2022. Carbon-sensitive pedotransfer functions for plant available water. Accepted in Soil Sci. Soc. Am. J. https://doi.org/10.1002/saj2.20395
Olson, M.B.*, M.M. Crawford, and T.J. Vyn. 2022. Hyperspectral indices for predicting nitrogen use efficiency in maize hybrids. Remote Sensing 14, 1721. https://doi.org/10.3390/rs14071721
Rieke, L.E., S.B. Cappellazzi, M. Cope, D. Liptzin, G. Mac Bean,…….T. J. Vyn,….C.L.S. Morgan, C. W. Honeycutt (Total of 109 authors). 2022. Linking soil microbial community structure to potential carbon mineralization: A continental scale assessment of reduced tillage. Soil Biology and Biochemistry. Volume 168, 108618. https://doi.org/10.1016/j.soilbio.2022.108618
2021
Olmedo Pico, L.B., Vyn, T.J., 2021. Dry matter gains in maize kernels are dependent on their nitrogen accumulation rates and duration during grain filling. Plants 10, 1222. https://doi.org/10.3390/plants10061222
Olmedo Pico, L.B., Zhang, C., Vyn, T.J., 2021. The central role of ear nitrogen uptake in maize endosperm cell and kernel weight determination during the lag period. F. Crop. Res. 273, 108285. https://doi.org/10.1016/j.fcr.2021.108285
2020
Eagle, A. J., McLellan, E. L., Brawner, E. M., Chantigny, M. H., Davidson, E. A., Dickey, J. B., Linquist, B. A., Maaz, T. M., Pelster, D. E., Pittelkow, C. M., Kessel, C. van, Vyn, T. J., & Cassman, K. G. (2020). Quantifying On-Farm Nitrous Oxide Emission Reductions in Food Supply Chains. Earth’s Future, 8(10), e2020EF001504. https://doi.org/10.1029/2020EF001504 View the Publication
Pasley, H. R., Camberato, J. J., Cairns, J. E., Zaman-Allah, M., Das, B., & Vyn, T. J. (2020). Nitrogen rate impacts on tropical maize nitrogen use efficiency and soil nitrogen depletion in eastern and southern Africa. Nutrient Cycling in Agroecosystems, 116(3), 397–408. https://doi.org/10.1007/s10705-020-10049-x View the Publication
Tollenaar, M., Dzotsi, K., Kumudini, S., Boote, K., Chen, K., Hatfield, J., Jones, J. W., Lizaso, J. I., Nielsen, R. L., Thomison, P., Timlin, D. J., Valentinuz, O., Vyn, T. J., & Yang, H. (2020). Modeling the Effects of Genotypic and Environmental Variation on Maize Phenology: The Phenology Subroutine of the AgMaize Crop Model. In Agroclimatology (pp. 173–200). John Wiley & Sons, Ltd. https://doi.org/10.2134/agronmonogr60.2017.0038 View the Publication
2019
Hodde, W., J. Sesmero, B. Gramig, T. Vyn, and O. Doering. 2019. The predicted effect of projected climate change on the economics of conservation tillage. Agron. J. 111:1-10. Doi:10.2134/agronj2019.01.0045 View the Publication
Jim Gaffney, James Bing, Patrick F. Byrne, Kenneth, G. Cassman, Ignacio Ciampitti, Deborah Delmer, Jeffrey Habben, H. Renee Lafitte, Ulrika E. Lidstrom, Dana O. Porter, John E. Sawyer, Jeff Schussler, Tim Stetter, Robert E. Sharp, Tony J. Vyn, David Warner. 2019. Science-based intensive agriculture: Sustainability, food security, and the role of technology. Global Food Security 23: 236-244. https://doi.org/10.1016/j.gfs.2019.08.003 View the Publication
Mueller, S.M., C.D. Messina, and T.J. Vyn. 2019. The role of the expnential and linear phases of maize (Zea mays L.) ear growth for determination of kernel number and kernel weight. European Journal of Agronomy 111 #125939 https://doi.org/10.1016/j.eja.2019.125939
H.R. Pasley, J.E. Cairns, J.J. Camberato, T.J. Vyn. 2019. Nitrogen fertilizer rate increases plant uptake and soil availability of essential nutrients in continuous maize production in Kenya and Zimbabwe. Nutr Cycl Agroecosyst Pages 1-17. doi:10.1007/s10705-019-10016-1 View the Publication
Mueller, S.M., C.D. Messina, and T.J. Vyn. 2019. Simultaneous gains in grain yield and nitrogen efficiency over 70 years of maize genetic improvement. Scientific Reports 9: 9095 p. 1-9. View the Publication
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.EQ Pages 421-429. doi:10.2134/jeq2018.05.0188 View the Publication
2018
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
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
2017
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. Available as First Look manuscript on April 27, 2018 at 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. 109:2689-2699. 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
2016
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
2015
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 View the Publication
Conference Publications and Presentations
2014
Ciampitti, I. A.* & Vyn, T. J.* (2014). Understanding global and historical nutrient use efficiencies for closing maize yield gaps. Agronomy Journal, 106: 634-644. View the Publication
Kovács, P.*, Doerge, T. A., Van Scoyoc, G. E., Camberato, J. J., & Vyn, T. J.* (2014). Pre-plant anhydrous ammonia placement consequences on no-till versus conventional maize growth and nitrogen responses. Agronomy Journal, 106: 634-644. View the Publication
Kovács P.* & Vyn, T.J.* (2014). Full-season retrospectives on causes of plant-to-plant variability in maize grain yield response to nitrogen and tillage. Agronomy Journal, 106(5): 1746-1757. View the Publication
Kumudini, S.*, Andrade, F. H., Edmeades, G. O., Nielsen, R. L., Thomison, P. R., Vyn, T. J. and other authors, Tollenaar, M.* (2014). Predicting maize phenology: Intercomparison of functions for developmental response to temperature. Agronomy Journal, 106: 2087-2097. View the Publication
Ciampitti, I. A.*, & Vyn, T. J.* (2014). Nutrient sufficiency concepts for modern corn hybrids: Impacts of management practices and yield levels. Crop Management, 13(1), 1-7. View the Publication
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. View the Publication
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 View the Publication
2013
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. View the Publication
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 View the Publication
Ciampitti*, I. A., and T. J. Vyn*. 2013. Grain nitrogen sources over time in maize: A review. Crop Science 53(2): 366-377. doi:10.2135/cropsci2012.07.0439 View the Publication
Ciamptti*,I. A., J. J. Camberato, S. T. Murrell, and T. J. Vyn*. 2013. Maize nutrient accumulation and partitioning in response to plant density and nitrogen rate: 1. Macronutrients. Agronomy Journal 105(3): 783-795. doi:10.2134/agronj2012.0467 View the Publication
Ciampitti*, I. A., and T. J. Vyn*. 2013. Maize nutrient accumulation and partitioning in response to plant density and nitrogen rate: II Calcium, magnesium, and micronutrients. Agronomy Journal 105(6): 1645-1657. doi:10.2134/agronj2013.0126 View the Publication
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 View the Publication
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 View the Publication
Omonode, R.A., and T.J. Vyn*. 2013. Nitrification kinetics and nitrous oxide emissions when nitrapyrin is coapplied with urea-ammonium nitrate. Agron. J. 105:1475-1486. doi:10.2134/agronj2013.0184 View the Publication
Roth, J. A., I. A. Ciampitti, and T. J. Vyn*. 2013. Physiological evaluations of recent drought-tolerant maize hybrids at varying stress levels. Agronomy Journal, 105, 1129-1141. doi:10.2134/agronj2013.0066 View the Publication
2012
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 Sci. 57 (1): 89-97. View the Publication
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.doi:10.2135/cropsci2012.05.0305 View the Publication
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 View the Publication
2011
Ciampitti, Ignacio A.* and Tony J. Vyn*. 2011. A comprehensive study of plant density consequences on nitrogen uptake dynamics of maize plants from vegetative to reproductive stages. Field Crops Res. 121: 2-8. View the Publication
Griffin, T.W.; Dobbins, C.L.; Florax, R.J.G.M.; Lowenberg-DeBoer, J.M.; Vyn, T.J. 2010. Spatial Analysis of Precision Agriculture Data: Role for Extension. J. National Assoc. Agric. Agents (on-line).View the Publication
Boomsma, C.R., J.B. Santini, T.D. West, J.C. Brewer, L.M. McIntyre, and T. J. Vyn., 2010. Maize grain yield responses to plant height variability resulting from crop rotation and tillage system in a long-term experiment. Soil Tillage Res. 106:227-240. View the Publication
2010
Omonode, R.A., A. Gál, D.R. Smith and T.J. Vyn*. 2010. Nitrous Oxide Fluxes in Corn Following Three Decades of Tillage and Rotation Treatments. Soil Sci. Soc. Am. J. 75. View the Publication
Spatial Analysis of Precision Agriculture Data: Role for Extension. J. National Assoc. Agric. Agents (on-line).View the Publication
Boomsma,C.R., J.B. Santini, T.D. West, J.C. Brewer, L.M. McIntyre, and T. J. Vyn., 2010. Maize grain yield responses to plant height variability resulting from crop rotation and tillage system in a long-term experiment. Soil Tillage Res. 106:227-240. View the Publication
2009
Gonzalo, M., J.B. Holland, T.J. Vyn and L.M. McIntyre. 2009. Direct mapping of density response in a population of B73 Mo17 recombinant inbred lines of maize (Zea Mays L.) Heredity 140. View the Publication
Boomsma, C.R., J.B. Santini, M. Tollenaar, and T.J. Vyn. 2009. Maize morpho-physiological responses to intense crowding and low nitrogen availability: An analysis and review. Agron. J. 101: 1426-1452 View the Publication
Westphal, A., L.J. Xing, R. Pillsbury and T.J. Vyn. 2009. Effect of tillage intensity on population densities of Heterodera glycinesin intensive soybean production systems. Field Crops Research. View the Publication
2008
Griffin, T.W., C.L. Dobbins, T.J. Vyn, R.J.G.M. Florax, J.M. Lowenberg-DeBoer. 2008. Spatial analysis of yield monitor data: case studies of on-farm trials and farm management decision making. Precision Agriculture Doi. View the Publication
Boomsma, C.R., and T.J. Vyn. 2008. Maize drought tolerance: Potential improvements through arbuscular mycorrhizal symbiosis? Field Crops Research. View the Publication
Creech, J. E., A. Westphal, V. R. Ferris, J. Faghihi, T. J. Vyn, J. B. Santini, and W. G. Johnson*. 2008. Influence of winter annual weed management and crop rotation on soybean cyst nematode (Heterodera glycines) and winter annual weeds. Weed Sci. 56:103-111. (ARP manuscript no. 2007-18154). View the Publication
2007
M. Gonzalo, T. J. Vyn, J. B. Holland & L. M. McIntyre. 2007. Mapping reciprocal effects and interactions with plant density stress in Zea mays L. Heredity 2007 99: 14-30;advance online publication, May 2, 2007; 10.1038/sj.hdy.6800955. View the Publication
Gàl, A., T.J. Vyn, E. Michéli, E.J. Kladivko, and W.W. McFee. 2007. Soil carbon and nitrogen accumulation with long-term no-till versus moldboard plowing overestimated with tilled-zone sampling depths. Soil Tillage Research. 96:42-51. View the Publication
Omonode, R.A., T.J. Vyn, D.R. Smith, P. Hegymegi, and A. Gal. 2007. Soil carbon dioxide and methane fluxes from long-term tillage systems in continuous corn and corn-soybean rotations. Soil and Tillage Research. 95:182-195. View the Publication
2006
Janovicek, K. J., W. Deen, T. J. Vyn. 2006. Soybean response to zone tillage, twin-row planting, and row spacing. Agron. J. 98:800:807. View the Publication
Omonode, Rex. A., and Tony J. Vyn. 2006. Vertical Distribution of Soil Organic Carbon and Nitrogen Under Warm Season Native Grasses Relative to Croplands. Agriculture, Ecosystems & Environment Vol. 17 (issues 2-3):159-170. View the Publication
Gonzalo, M., J. Holland, T. Vyn and L. McIntyre. 2006. Mapping density response in maize: a direct approach for testing genotype and treatment interactions. Genetics 173:331-348. View the Publication
Omonode, R.A., A. Gal, D.E. Stott, T.S. Abney and T.J. Vyn. 2006. Short-term versus continuous chisel and no-till effects on soil carbon and nitrogen. Soil Sci. Soc. Am. J. 70:419-425. View the Publication
Omonode, R.A., and T.J. Vyn. 2006. Spatial dependence and relationships of electrical conductivity to soil organic matter, phosphorus and potassium, Soil Science 171(3):223-238. View the Publication
2005
Yin, Xinhua and T.J. Vyn. 2005. Relationships of isoflavone, oil, and protein in seed with yield of soybean. Agron. J. 97:1314-1321. View the Publication
2004
Yin, Xinhua and T.J. Vyn. 2004. Critical leaf potassium concentrations for yield and seed quality of conservation-till soybean. Soil Sci. Soc. Am. J. 68:1626-1634. View the Publication
X. Yin and T.J. Vyn. 2004. Residual effects of potassium placement in conservation-till corn on subsequent no-till soybean. Soil and Tillage Research Journal 75:151-159. View the Publication
2003
Yin, X.*, and T.J. Vyn*. 2003. Previous corn row effects on potassium nutrition and yield of subsequent no-till soybean. J. Plant Nutrition 26 (7):1383-1402. View the Publication
Drury, C.F., C.S. Tan, W.D. Reynolds, T.W. Welacky, S.E. Weaver, A.S. Hammill, and T.J. Vyn, 2003. Impacts of zone tillage and red clover on corn performance and soil physical quality. Agron. J. 67:867-877. View the Publication
Yin, X.H.* and T.J. Vyn*. 2003. Potassium placement effects on yield and seed composition of no-till soybean seeded in alternate row widths. Agron. J. 95:126-132. View the Publication
2002
Vyn, T.J.*, and D.C. Hooker. 2002. Assessment of multiple- and single-factor stress impacts on corn. Field Crops Res. 75:123-137.
Vyn, TJ., X. Yin, T.W. Brunlsema, C.C Jackson, I. Rajcan, and S.M. Brouder. 2002. Potassium fertilization effects on isoflavone concentrations in soybean [Glycine max (L.) Merr.]. J. Agric. Food Chem. 50:3501-3506. View the Publication
Yin, X., and T.J. Vyn. 2002. Residual effects of potassium placement and tillage systems for corn on subsequent no-till soybean. Agron. J. 94:112-1119.
Garcia-Garca, J.A., S. Neumann, T.J. Vyn and G.J. Boland. 2002. Influence of crop rotation and tillage on production of apothecia by Sclerotinia sclerotiorum. Can. J. Plant Pathology, Volume 24(2): 137-143. View the Publication
Yin, X., and T. J. Vyn. 2002. Soybean responses to potassium placement and tillage alternatives following long-term no-till. Agron. J. 94:1367-74.
Vyn, T.J., D.M. Galic and K.J. Janovicek. 2002. Corn response to potassium placement in conservation tillage. Soil Tillage Res. 67(2):159-169.
2001
Vyn, T.J., and K.J. Janovicek. 2001. Potassium placement and tillage system effects on corn response following long-term no-till. Agron. J. 93:487-495. View the Publication
2000
Vyn, T.J., J.G. Faber, K.J. Janovicek, and E.G. Beauchamp. 2000. Cover crop management effects on nitrogen availability to corn following wheat. Agron. J. 92:915-924.
Yiridoe, E.K., T.J. Vyn, A. Weersink, D.C. Hooker, and C. Swanton. 2000. Farm-level profitability analysis of alternative tillage systems on clay soils. Can. J. Plant Sci. 80 (1): 65-73.
Yiridoe, E.K., A. Weersink, D.C. Hooker, T.J. Vyn, and C. Swanton. 2000. Income risk analysis of alternative corn and soybean production on clay soils. Can. J. Agric. Econ. 48(2):161-174.
1999
Swanton, C.J., T.J. Vyn, K. Chandler, and A. Shresthra. 1999. Alternative weed control strategies for no-till soybean (Glycine max) grown on clay soils. Weed Technology 12:660-669.
Vyn, T.J., K.J. Janovicek, M.H. Miller, and E.G. Beauchamp. 1999. Soil nitrate accumulation and corn response to preceding small grain N fertilization and cover crops. Agron. J. 91:17-24. View the Publication
Wanniarachi, S.D., R.P. Voroney, T.J. Vyn, R.P. Beyaert, and A.F. MacKenzie. 1999. Tillage effects on the dynamics of soil total and corn-derived organic matter in two southern Ontario soils. Can. J. Soil Sci. 79:473-480. View the Publication
1998
Vyn, T.J., and M. Tollenaar. 1998. Physical and chemical parameters of corn grain associated with three decades of maize yield improvement. Field Crop Research 59:135-140. View the Publication
Vyn, T.J., G. Opoku and C.J. Swanton. 1998. Residue management and minimum tillage systems for soybeans following wheat. Agron. J. 90:131-138. View the Publication
(Phaseolus vulgaris L.). Can. J. Plant Sci. 78:363-370. View the Publication
Ding, W., D.J. Hume, T.J. Vyn and E.G. Beauchamp. 1998. N credit of soybean to a following corn crop in central Ontario. Can. J. Plant Sci. 78:29-33. View the Publication
Dapaah, H.K., and T.J. Vyn. 1998. Nitrogen fertilization and cover crop effects on soil structural stability and corn performance. Commun. Soil Sci. & Plant Anal. 29: 2557-2569.
1997
Opoku, G., and T.J. Vyn. 1997. Wheat residue management options for no-till corn. Can. J. Plant Sci. 77:207-213. View the Publication
Opoku, G., T.J. Vyn and C.J. Swanton. 1997. Modified no-till systems for corn following wheat on clay soils. Agron. J. 89:549-556.
Hooker, D.C.*, T.J. Vyn and C.J. Swanton. 1997. Effectiveness of soil-applied herbicides with mechanical weed control for conservation tillage systems in soybean. Agron. J. 89:579-587.
Janovicek, K.J., T.J. Vyn and R.P. Voroney. 1997. No-till corn response to crop rotation and in-row residue placement. Agron. J. 89:588-596
Janovicek, K.J., T.J. Vyn, R.P. Voroney and O.B. Allen. 1997. Early corn seedling growth response to acetic, propionic and butyric acids. Can. J. Plant Sci. 77: 333-337.
Janovicek, K.J., T.J. Vyn, R.P. Voroney and O.B. Allen. 1997. Early corn seedling growth response to phenolic acids. Can. J. Plant Sci. 77:391-393.
Opoku, G., T.J. Vyn and R.P. Voroney. 1997. Wheat straw placement effects on total phenolic compounds in soil and corn seedling growth. Can. J. Plant Sci. 77:301-305. View the Publication
1994
Aflakpui, G.K.S., T.J. Vyn, G.W. Anderson, D.R. Clements, M.R. Hall and C.J. Swanton. 1994. Crop management systems for corn following established alfalfa (Medicago sativa L.). Can. J. Plant Sci. 74:255-259.
Stewart, G.A., and T.J. Vyn. 1994. Influence of high axle loads and tillage systems on soil properties and grain corn yield. Soil Tillage Research 129:229-235.
1993
Vyn, T.J., and B.A. Raimbault. 1993. Long-term impact of five tillage systems on corn response and soil structure. Agron. J. 85:1074-1079.
Tollenaar, M., M. Mihajlovic and T.J. Vyn. 1993. Corn growth following cover crops: Influence of cereal cultivar, cereal removal, and nitrogen rate. Agron. J. 85:251-255.
Aflakpui, G.K.S., T.J. Vyn, M.R. Hall, G.W. Anderson and C.J. Swanton. 1993. Effect of tillage on nitrogen response in corn (Zea mays L.) after established alfalfa (Medicago sativa L.). Can. J. Plant Sci. 73:73-81.
Conference Proceedings and Presentations
Christopher R. Boomsma and Tony J. Vyn, "Per-plant eco-physiological responses of maize to varied nitrogen availability at low and high plant densities" (July 7, 2009). The Proceedings of the International Plant Nutrition Colloquium XVI. Paper 1233. View the Proceedings
Kovacs, P., and T.J. Vyn. 2011. “Corn plant uniformity following shallow NH3 placement in precision-guided, pre-plant nitrogen applications”. Proceedings, 41st North Central Extension-Industry Soil Fertility Conference, Des Moines, Iowa. November 16-17, 2011. Pages 181-187. View the Proccedings
Boomsma, C.R., Santini, J.B., Vyn, T.J. 2009. Maize plant competition in high plant density, high yield environments. 2009 American Seed Trade Association (ASTA) 64th Annual Corn & Sorghum Seed Research Conference and 39th Annual Soybean Seed Research Conference; Chicago, Illinois.
Tony J. Vyn and Terry D. West, 2009. Efficient Fluid Fertilizer Management for Corn Producers with Automatic Guidance Systems: Three Year Summary, Proceedings CD, 2009 Fluid Form sponsored by the Fluid Fertilizer.
Vyn, T. J., 2008. Tillage and fertility aspects of root zones optimization for corn. Proceedings, Illinois Crop Protection Technology Conference, January, 2008. Pages 70-74. View the Proceedings
Boomsma, C.R., M. Canepa, and T.J. Vyn. 2007. Factors affecting the relative benefit of deep-banding versus broadcast application of P and K for corn and soybean. Proceedings, North Central Extension-Industry Soil Fertility Conference 2007 in Des Moines, Iowa. Vol. 23, pages 55-63. View the Proceedings
Vyn, Tony J., R.A. Omonode, D.R. Smith, A. Gal, and P. Hegymegi. 2006. Soil sequestration and gas emissions of carbon after 3 decades of tillage systems for corn and soybean production in Indiana. Proceedings CD for the 17th International Soil Tillage Research Organization Conference, Kiel Germany, August 28 to Sept. 3, 2006. View the Proceedings
Ball, B., and T.J. Vyn. 2003. Spatial response of maize to conservation tillage and potassium placement of variable soils, in CD of Proceedings, 16th International Soil Tillage Research Conference, Brisbane, Australia, July 10-14, 2003. View the Proceedings
Vyn, T.J., T.D. West, and G.C. Steinhardt. 2000. Corn and soybean response to tillage and rotation systems on a dark prairie soil: 25 year review. No. 196 (p. 1-10) in Proceedings, 15th Conf. of Int'l. Soil Tillage Research Org., July 2-6, 2000. Fort Worth, Texas. View the Proceedings
Gehring, D.A., G.C. Steinhardt, E.J. Kladivko, T.D. West, T.J. Vyn, and G.L. Willoughby. 2000. Soil physical property response to tillage and rotation on a dark prairie soil. No. 178 (p. 1-10) in Proceedings, 15th Conf. of Int'l. Soil Tillage Research Org., July 2-6, 2000. Fort Worth, Texas.
Hooker, D.C., and T.J. Vyn. 2000. Critical soil factors affecting early corn growth and yield in conservation tillage: A multi-variable approach. No. 82(p. 1-10) in Proceedings, 15th Conf. of Int'l. Soil Tillage Research Org., July 2-6, 2000. Fort Worth, Texas.
Arends, M.J., T.J. Vyn, and T.D. West. 2000. Feasibility of fall zone tillage for maize production. No. 9 (p. 1-9) in Proceedings, 15th Conf. of Int'l. Soil Tillage Research Org., July 2-6, 2000. Fort Worth, Texas.
Vyn, T.J. 1999. Potassium placement in conservation tillage: Cropping system considerations. Pages 82-87 in Proceedings of 29th North Central Extension-Industry Soil Fertility Conference, St. Louis, Missouri, Nov. 17-18.
Vyn, T.J. and G.A. Stewart. 1994. Cover crop nitrogen availability to corn with conservation tillage. Pages 813-818 in Proceedings of 13th International Soil Tillage Research Organization Conference, Aalborg, Denmark, July 24-29
Hooker, D.C. and T.J. Vyn. 1994. Alternative weed control strategies with conservation tillage systems in soybeans. Pages 977-982 in Proceedings of 13th Conference of Int'l Soil Tillage Research Organization (v. II), Aalborg, Denmark, July 24-29.
Stewart, G.A., T.J. Vyn and K.J. Janovicek. 1994. Assessment of soil changes with no-till planter options in corn production. Pages 1289-1294 in Proceedings of 13thInternational Soil Tillage Research Organization Conference (v. II), Aalborg, Denmark, July 24-29.
Other Publications
Yin, X., and T.J. Vyn. 2005. Critical leaf potassium is higher in no-till soybean. Better Crops 89 (2):1-5.
Yin, X., and T.J. Vyn. 2005. High soybean yield can mean higher concentrations of isoflavones. Better Crops 89 (4):13-15.
Vyn, T.J., B. Ball, D. Maier, and S.M. Brouder. 2002. High Oil Corn Yield and Quality Responses to Fertilizer K versus Exchangeable K on Variable Soils. Better Crops 86 (4): 16-21,
Xinhua Yin and Tony J. Vyn. 2002. Residual impacts of previous corn rows on Potassium Nutrition of No-till Narrow Row Soybeans. Better Crops 86 (3): 16-19.
Vyn, T.J. 2001. Nutrient placement and high yield management in corn. InfoAg 2001 Conference Proceedings, Aug. 7-9, Indianapolis, IN.
Vyn, T.J. 2000. Tillage systems for corn and potassium placement: Cropping systems considerations. Pages 47-54 in Proceedings, 2000 Crop Management Workshops in Indiana.
Bruulsema, T.W. C.J. Jackson, I. Rajcan, and T.J. Vyn. 2000. Functional food components: A role for potassium. Better Crops with Plant Food. 84(27:6-7).
Vyn, T.J., K.J. Janovicek, and T.W. Bruulsema. 1999. Banded potash boosts no-till corn yield (Ontario). Better Crops with Plant Food 83(3)8-9.
Vyn, T. J., and C.J. Swanton. 1997. Determining the factors responsible for, and methods to overcome, the limitations of conservation cropping systems on clay soils. Agriculture and Agri-Food Canada COESA Report No.: Res/Farm 004/97.