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Jeffrey J Volenec
Professor of Agronomy
​Department: Agronomy
Phone: 765.494.8071
Fax: 765.496.2926
Office: Lilly 2-327

Area of Expertise: Crop Ecophysiology​
Research Areas
Our research goal is to understand the physiological basis for differences in growth, yield, and stress tolerance of crops and to characterize the environmental impacts of cropping systems including input use efficiencies (N, water, PAR). ​

 Examples of current research include: 

     Characterize mechanisms controlling synthesis and degradation of                         organic  reserves and understand their role in plant growth and stress                   tolerance. 

     Conduct comparative analysis of water and nitrogen use by                                       cropping  systems. These analyses aim to identify                                                         those  species/systems that  maximize production while minimizing                       environmental impacts.

     Determine the physiological and ecological mechanisms controlling abiotic           stress tolerance of plants.

     Understand water and nutrient use efficiencies in crop plants and the                     underlying physiological, ecological and biochemical drivers of these traits. 


Examples of Dr. Volenec's Publications (see his CV​​​​ for a complete listing)
Volenec, J.J., and C.J. Nelson. 1982. Carbohydrate metabolism in leaf meristems of tall fescue. I. Relationship to genetically altered leaf elongation rates. Plant Physiol. 74:590-594.

Volenec, J.J., C.J. Nelson, and D.A. Sleper. 1984.  Influence of temperature on leaf dark respiration of tall fescue genotypes. Crop Sci. 24: 907-912.

Volenec, J.J., H.T. Nguyen, C.J. Nelson, and D.A. Sleper. 1984. Potential for genetically modifying dark respiration of tall fescue leaves. J. Plant Nutr. Soil Sci. 176:387-399.

Cherney, J.H., K. J. Moore, J.J. Volenec, and J.D. Axtell. 1986. Rate and extent of digestion of cell wall components of brown-midrib sorghum species. Crop Sci. 26: 1055-1059.

Volenec, J.J., J.H. Cherney, and K.D. Johnson. 1987. Yield components, plant morphology, and forage quality of alfalfa as influenced by plant population. Crop Sci. 27: 321-326.​

MacAdam, J.W., J.J. Volenec, and C.J. Nelson. 1989. Effects of nitrogen on mesophyll cell division and epidermal cell elongation in tall fescue leaf blades. Plant Physiol. 89:549-556.

Fankhauser, Jr., J.J., J.J. Volenec. 1989. Root vs. shoot effects on herbage regrowth and carbohydrate metabolism of alfalfa. Crop Sci. 29:735-740.

Fankhauser, Jr., J.J., J.J. Volenec, and G.A. Brown. 1989. Composition and structure of starch from taproots of contrasting genotypes of Medicago sativa L. Plant Physiol. 90:1189-1194.

Brown, G.A., and J.J. Volenec. 1989. Isolation and molecular composition of starch from roots of Medicago sativa L. Starch 41:247-250.

Habben, J.E., and J.J. Volenec. 1990. Starch grain distribution in taproots of defoliated Medicago sativa L. Plant Physiol. 94:1056-1061.

Cherney, J.H., K.D. Johnson, J.J. Volenec, and D.K. Greene. 1991. Biomass potential of selected grass and legume crops. Energy Sources. 13:283-292.

Boyce, P.J., and J.J. Volenec. 1992. Purification and partial characterization of β-amylase from alfalfa taproots. Phytochem. 31:427-431.

Boyce, P.J., and J.J. Volenec. 1992. Taproot carbohydrate concentrations and stress tolerance of alfalfa. Crop Sci. 32:757-761.

Cherney, J.H., and J.J. Volenec. 1992. Forage evaluation as influenced by environmental replication (Review article). Crop Sci. 32:841-846.

Hendershot, K.L., and J.J. Volenec. 1993. Taproot nitrogen accumulation and use in overwintering alfalfa (Medicago sativa L.). J. Plant Physiol. 141:68-74.

Cunningham, S.M., and J.J. Volenec. 1996. Purification and characterization of vegetative storage proteins from alfalfa (Medicago sativa L.) taproots. J. Plant Physiol. 147:625- 632.

Volenec, J.J., A. Ourry, and B.C. Joern. 1996. A role for nitrogen reserves in forage regrowth and stress tolerance. Physiol. Plant. 97:185-193.

Gana, J.A., N.E. Kalengamaliro, S.M. Cunningham, and J.J. Volenec. 1998. Expression of an alfalfa β-amylase gene. Plant Physiol. 118:1495-1505.

Kalengamaliro, N.E., J.A. Gana, S.M. Cunningham, and J.J. Volenec. 2000. Mechanisms regulating differential freezing tolerance of suspension cell cultures derived from contrasting alfalfa genotypes. Plant Cell Tiss. Organ Culture 61:143-151.

​Cunningham, S.M., J.A. Gana, J.J. Volenec, and L.R. Teuber. 2001. Winter hardiness, root physiology, and gene expression in successive fall dormancy selections from 'Mesilla' and 'CUF 101' alfalfa. Crop Sci. 41:1091-1098.

Volenec, J.J., S.M. Cunningham, D.M. Haagenson, W.K. Berg, B.C. Joern, and D.W. Wiersma. 2002. Physiological genetics of alfalfa improvement: past failures and future prospects. Field Crops Res. 75:97-110.

Haagenson, D.M., S.M. Cunningham, B.C. Joern and J.J. Volenec. 2003. Autumn defoliation effects on alfalfa winter survival, root physiology, and gene expression. Crop Sci. 43:1340-1348.

Cunningham, S.M., P. Nadeau, Y. Castonguay, S. Leberge and J.J. Volenec. 2003. Raffinose and stachyose accumulation, galactinol synthase expression, and winter injury of contrasting Medicago sativa germplasms. Crop Sci. 43:562-570.

Kalengamaliro, N.E., S.M. Cunningham and J.J. Volenec. 2003. Growth, sugar accumulation, and dark respiration of suspension cell cultures derived from contrasting alfalfa cultivars. Plant Cell Tiss. Organ Cult. 72:163-171.

Abu Qamar, S.F., T.G. Sors, S.M. Cunningham, B.C. Joern, and J.J. Volenec. 2005. Phosphate nutrition effects on growth, phosphate transporter transcript levels and physiology of alfalfa cells. Plant Cell Tiss. Organ Cult. 82:131-140.

Castonguay, Y., S. Laberge, E.C. Brummer, and J.J. Volenec. 2006. Alfalfa winter hardiness: A research retrospective and integrated perspective. Adv. Agron. 90:203-265.

Berg, W.K., S.M. Cunningham, S.M. Brouder, K.D. Johnson, B.C. Joern, and J.J. Volenec. 2007. The long-term impact of phosphorus and potassium fertilization on alfalfa yield and yield components. Crop Sci. 47:2198-2209.

Patton, A.J., S.M. Cunningham, J.J. Volenec, and Z.J. Reicher. 2007. Differences in freeze tolerance of zoysiagrasses. I. Role of Proteins. Crop Sci. 47:2162-2169.

Brouder, S.M. and J.J. Volenec. 2008. Impact of climate change on crop nutrient and water use efficiencies. Physiol. Plant. 133:705-724.

Berg, W.K., S.M. Cunningham, S.M. Brouder, B.C. Joern, K.D. Johnson, J.J. Volenec. 2009. Influence of phosphorus and potassium on alfalfa yield, taproot C and N pools, and transcript levels of key genes after defoliation. Crop Sci. 49:974-982.

Lissbrant, S., S.M. Brouder, S.M. Cunningham, and J.J. Volenec. 2010. Identification of fertility regimes that enhance long-term productivity of alfalfa using cluster analysis. Agron. J. 102:580-591.

Pembleton, K.G., S.M. Cunningham, and J.J Volenec. 2010. Effect of summer irrigation on seasonal changes in taproot reserves and the expression of winter dormancy/activity in four contrasting lucerne cultivars. Crop Pasture Sci. 61:873-884.

Fernández, F.G., S.M. Brouder, C.A. Beyrouty, J.J. Volenec, and R. Hoyum. 2011. Soybean shoot and root response to localized water and potassium in a split-pot study. Plant and Soil 344:197-212.

Rutledge, J.M.,  J.J. Volenec, R.H. Hurley, and Z.J. Reicher. 2012.  Seasonal changes in morphology and physiology or roughstalk bluegrass. Crop Sci. 52: 858-868.

Woodson, P., J.J. Volenec, and S.M. Brouder. 2013. Field-scale potassium and phosphorus fluxes in bioenergy crop switchgrass: Theoretical energy yields and management implications. J. Plant Nutr. Soil Sci. 176:387-399.

Trybula, E.M., C. Raj, J.L. Burks, , I. Chaubey, S.M. Brouder, and J.J. Volenec. 2014. Perennial rhizomatous grasses as bioenergy feedstock in SWAT: parameter development and model improvement. Glob. Change Biol. Bioenergy DOI: 10.1111/gcbb.12210

Moore, K.J., S. Birell, R.C. Brown, M.D. Casler, J.E. Euken, H.M. Hanna, D.J. Hayes, J.D. Hill, K.L. Jacobs, C.L. Kling, D. Laird, R.B. Mitchell, P.T. Murphy, D.R. Raman, C.V. Schwab, K. J. Shinners, K.P. Vogel, and J.J. Volenec. 2015. Midwest vision for sustainable fuel production. Biofuels. (DOI:10.1080/17597269.1015312). 16 pp.

Feng, Q., I. Chaubey, Y.G. Her, R. Cibin, B. Engel, J.J. Volenec, X. Wang. 2015. Hydrologic and water quality impacts and biomass production potential on marginal land. Env. Model. Software 72:230-38.
Orr M.-J., M. Bischoff Gray, B. Applegate, J.J. Volenec, S.M. Brouder and R.F. Turco. 2015.  Transition to second-generation cellulosic biofuel production systems reveals limited negative impacts on the soil microbial community structure. Appl. Soil Ecol. 95:62-72. https://doi.org/10.1016/j.apsoil.2015.06.002.

Cibin R., EM. Trybula, I. Chaubey, S.M. Brouder, and J.J. Volenec. 2016. Watershed scale impacts of bioenergy crops on hydrology and water quality using improved SWAT model. GCB Bioenergy 8:837-848. DOI: 10.1111/gcbb.12307.

Ongom, P.O., J.J. Volenec, and G. Ejeta. 2016. Selection for drought tolerance in sorghum using desiccants to simulate post-anthesis drought stress. Field Crops Res. 198:312-21. https://doi.org/10.1016/j.fcr.2016.03.015.

Dierking, R.M., D. Allen, S.M. Brouder, and J.J. Volenec. 2016. Yield, biomass composition, and N use efficiency during establishment of four Miscanthus × giganteus genotypes as influenced by N management. Biomass Bioenergy 91:98-107. https://doi.org/10.1016/j.biombioe.2016.05.005

Ojeda, J.J., J.J. Volenec, S.M. Brouder, O.P. Caviglia, M.G. Agnusdei. 2016.  Evaluation of Agricultural Production Systems Simulator (APSIM) as yield predictor of Panicum virgatum and Miscanthus x giganteus in several US environments. Glob. Change Biol. Bioenergy. doi: 10.1111/gcbb.12384

Grassini, P., C.M. Pittelkow, K.G. Cassman, H.S. Yang, S. Archonotoulis, K.R. Lampkey, I.A. Ciampitti, J. A. Coulter, S.M. Brouder, J.J. Volenec, N. Guindin-Garcia. 2017. Robust spatial frameworks for leveraging research on sustainable crop intensification. Global Food Security https://doi.org/10.1016/j.gfs.2017.01.002

Feng, Q., I. Chaubey, B. Engel, R. Cibin, K.P. Sudheer, and J.J. Volenec. 2017. Marginal land suitability for switchgrass, Miscanthus and hybrid poplar in the Upper Mississippi River Basin (UMRB). Environ. Model. Softw. 93:356-65. https://doi.org/10.1016/j.envsoft.2017.03.027

Brouder, S.M., and J.J. Volenec. 2017. Future climate change and plant macro-nutrient use efficiency. pp. 357-379. In Plant macro-nutrient use efficiency: Molecular and genomic perspectives. Hossain, M.A., Kamiya, T., Burrit, D.J., Phan Tran, L.-S., Fujiwara, T. (Eds.). Elsevier. ISBN: 9780128113080

Dierking R.M., D.J. Allen, S.M. Cunningham, S.M. Brouder, and J.J. Volenec. 2017. Nitrogen dynamics in above and belowground tissues of two Miscanthus × giganteus genotypes under various N fertilization rates. Front. Plant Sci. DOI: 10.3389/fpls.2017.01618.

Feng, Q., I. Chaubey, B. Engel, R. Cibin, K.P. Sudheer, and J.J. Volenec. 2017. Simulating establishment periods of perennial bioenergy grasses in the soil and water assessment tool (SWAT) model. Trans ASABE 60: 1621-1632. DOI: 10.13031/trans.12227.

Ojeda, J.J., J.J. Volenec, S.M. Brouder, O.P. Caviglia, M.G. Agnusdei. 2018. Modelling stover and grain yields, and subsurface artificial drainage from long-term corn rotations using APSIM. Agric. Water Manage. 195:154–171. https://doi.org/10.1016/j.agwat.2017.10.010.

Berg, W.K., S. Lissbrant, S.M. Cunningham, S.M. Brouder, and J.J. Volenec. 2018. Cluster analysis of phosphorus and potassium effects on plant persistence and taproot C and N reserves of alfalfa (Medicago sativa L.). Plant Sci. https://doi.org/10.1016/j.plantsci. 2018.02.026.

Feng, Q., I Chaubey, R. Cibin, B. Engel, K.P. Sudheer, J.J. Volenec, and N. Omani. 2018. Perennial biomass production from marginal land in the Upper Mississippi River Basin. Land Degrad. Develop. https://doi.org/10.1002/ldr.2971.

Mitchell, K., E. French, J. Beckerman, A. Iyer-Pascuzzi, J.J. Volenec, and K. Gibson. 2018. Biochar alters the root systems of large crabgrass. Hortsci. 53:354–359. https://doi.org/10.21273/HORTSCI12690-17.

Ojeda, J.J., J.J. Volenec, S.M. Brouder, O.P. Caviglia, M.G. Agnusdei. 2018. Modelling stover and grain yields, and subsurface artificial drainage from long-term corn rotations using APSIM. Agric. Water Manage. 195:154–171. https://doi.org/10.1016/j.agwat.2017.10.010.

 

Taylor, M.S., C.-E. Tornqvist, X. Zhao, P. Grabowski, R. Doerge, J. Ma, J.J. Volenec, J. Evans, G. P. Ramstein, M. D. Sanciangco, C. R. Buell, M.D. Casler., and Y. Jiang. 2018. Genome-wide association study in pseudo-F2 populations of switchgrass identifies genetic loci affecting heading and anthesis dates. Front. Plant Sci. 9:1250 https://doi.org/10.3389/fpls.2018.01250

Feng, Q., I Chaubey, R. Cibin, B. Engel, K.P. Sudheer, J.J. Volenec, and N. Omani. 2018. Perennial biomass production from marginal land in the Upper Mississippi River Basin. Land Degrad. Develop. https://doi.org/10.1002/ldr.2971.

Mitchell, K., E. French, J. Beckerman, A. Iyer-Pascuzzi, J.J. Volenec, and K. Gibson. 2018. Biochar alters the root systems of large crabgrass. Hortsci. 53:354–359. https://doi.org/10.21273/HORTSCI12690-17.

Zumpf, C., M.-S. Lee, S. Thapa, J. Guo, R. Mitchell, J.J. Volenec, and D.K. Lee. 2019. Impact of warm‐season grass management on feedstock production on marginal farmland in Central Illinois. GCB Bioenergy DOI: 10.1111/gcbb.12627. p. 1-13.

Gorthi, A. J.J. Volenec, and L.R. Welp. 2019. Stomatal response in soybean during drought improves leaf and field-scale water use efficiencies. Agric. Forest Meteor. 276–277: (15 October 2019). doi.org/10.1016/j.agrformet.2019.107629.

Rivera-Burgos, L.A.,  J. J. Volenec, and G. Ejeta. 2019.  Biomass and bioenergy potential of brown midrib sweet sorghum germplasm. Front. Plant Sci. 20 September 2019. doi.org/10.3389/fpls.2019.01142.

Welikhe, P., S.M. Brouder, J.J. Volenec, M. Gitau, and R.F. Turco. 2020. Development of phosphorus sorption capacity‐based environmental indices for tile‐drained systems. J. Environ. Qual. 49:378-391. doi.org/10.1002/jeq2.20044.

Moreira, F.F., H.R. Oliveira, J.J. Volenec, K.M. Rainey, and L.F. Brito. 2020. Integrating high-throughput phenotyping and statistical genomic methods to genetically improve longitudinal traits in crops. Front. Plant Sci. DOI: 10.3389/fpls.2020.00681.

Bowling, L.C., K. Cherkauer, C. Lee, J. Beckerman, S.M. Brouder, J. Buzan, O. Doering, J. Dukes, P. Ebner, J. Frankenberger, B. Gramig, E. Kladivko, and J.J. Volenec. 2020. Agricultural impacts of climate change in Indiana and potential adaptations. Climatic Change 163:2004-2027. https://doi.org/10.1007/s10584-020-02934-9.

Welikhe, P., S.M. Brouder, J.J Volenec, M. Gitau, and R.F. Turco. 2021. Using artificial neural networks to improve phosphorus indices. J. Soil Water Conserv. (in press).

Welikhe, P., S.M. Brouder, J.J Volenec, M. Gitau, and R.F. Turco. 2021. Dynamics of dissolved reactive phosphorus loss from phosphorus source and sink soils in tile-drained systems. J Soil Water Conserv. (in press).


Datasets
Berg, W. K., S. Lissbrant, J.J. Volenec, S.M. Brouder, B.C. Joern, K.D. Johnson, and S.M. Cunningham. 2012. Phosphorus and potassium influence on alflalfa nutrition. Purdue University Research Repository. DOI: 10.4231/D3251FJ7S. (3,622 views, 1,248 downloads as of 7/25/2018)

Brouder, S., De Armond, N., Turco, R., Volenec, J. 2014. Maize grain yield record for the WQFS (1995-2012). Purdue University Research Repository. DOI: 10.4231/R7RN35SJ. (11,283 views, 1,182 downloads as of 7/25/2018)

Volenec, J.J., and S.M. Brouder. 2019. Maize Response to P and K in 2006. Experiment 1 at Throckmorton Purdue Agricultural Center: Yield, Soil and Tissue P and K, and Seed and Stover Composition. Purdue University Research Repository. https://doi.org/10.4231/C1W0-8F75. (221 views, 43 downloads as of 3/12/2021).

Volenec, J.J., and S.M. Brouder. 2019. Maize Response to P and K in 2006. Experiment 2 at Throckmorton Purdue Agricultural Center: Yield, Soil and Tissue P and K, and Stover and Grain Composition. Purdue University Research Repository. https://doi.org/10.4231/WWSK-RA65. (225 views, 42 downloads as of 3/12/2021).

Wiersma, D., W.G. Hartman, S. Pejša, S.M. Brouder, and J.J. Volenec. 2020. Alfalfa Variety Trial Database, 1986-1999. Purdue University Research Repository. doi:10.4231/PHKH-4334. (150 views, 27 downloads as of 3/12/2021).

Wiersma, D., W.G. Hartman, S. Pejša, S.M. Brouder, and J.J. Volenec. 2020. Metadata for alfalfa varieties and experimental lines 1986 to 1999. Purdue University Research Repository. doi:10.4231/FMY9-6966. (348 views, 82 downloads as of 3/12/2021).

Wiersma, D., W.G. Hartman, S. Pejša, S.M. Brouder, and J.J. Volenec. 2020. Genetic and environmental variation in alfalfa forage quality from variety testing experiments conducted in North America between 1986 and 1999. Purdue University Research Repository. doi:10.4231/02PR-9H36. (598 views, 92 downloads as of 3/12/2021).

Wiersma, D., W.G. Hartman, S. Pejša, S.M. Brouder, and J.J. Volenec. 2020. Genetic and environmental variation in alfalfa stand persistence from variety testing experiments conducted in North America between 1986 and 1999. Purdue University Research Repository. doi:10.4231/KK4K-QD96. (292 views, 69 downloads as of 3/12/2021).

Wiersma, D., W.G. Hartman, S. Pejša, S.M. Brouder, and J.J. Volenec. 2020. Genetic and environmental variation in alfalfa forage yield from variety testing experiments conducted in North America between 1986 to 1999. Purdue University Research Repository. doi:10.4231/Y31N-5R10. (309 views, 72 downloads as of 3/12/2021).

North American Alfalfa Improvement Conference, S. Pejša, and J.J. Volenec. 2020. Archived standard tests to characterize stress tolerance and agronomic performance of alfalfa cultivars. Purdue University Research Repository. doi:10.4231/N24B-MV16. (148 views, 24 downloads as of 3/12/2021).

Welikhe, P., S.M. Brouder, J.J. Volenec, M. Gitau, R.F. Turco, N.S. De Armond. 2020. Tile discharge, dissolved reactive phosphorus concentrations and loads for the WQFS (Water year 2011 – 2013). Purdue University Research Repository. doi:10.4231/BJHE-3239. (98 views, 24 downloads as of 3/12/2021).

Book Chapters

Brouder, S.M., and J.J. Volenec. 2017. Future climate change and plant macronutrient use efficiency. p. 357-379. In: Hossain et al. (Eds.) Plant macronutrient use efficiency: molecular and genomic perspectives. Elsevier, New York. ISBN: 9780128113080.

Volenec, J.J. and C.J. Nelson.  2018. Environmental aspects of forage management.  Chapter 5. pp. 71-86. In: M. Collins, C.J. Nelson. K.J. Moore and D.D. Redfearn (eds.)  Forages-An Introduction to Grassland Agriculture. Volume I. 7th Edition.  John Wiley & Sons, Inc., New York, NY.

Volenec, J.J. and C.J. Nelson.  2020. Carbon metabolism in forage plants.  Chapter 4. In: M. Collins, C.J. Nelson. K.J. Moore and D.D. Redfearn (eds.). Forages-The Science of Grassland Agriculture.  Volume II. 7th Edition.  John Wiley & Sons, Inc., New York, NY. doi.org/10.1002/9781119436669.ch4.

Brouder, S.M. and J.J. Volenec.  2020. Mineral nutrient acquisition and metabolism. Chapter 5. In: M. Collins, C.J. Nelson. K.J. Moore and D.D. Redfearn (eds.). Forages-The Science of Grassland Agriculture.  Volume II. 7th Edition.  John Wiley & Sons, Inc., New York, NY. doi.org/10.1002/9781119436669.ch5.

Volenec, J.J., S.M. Brouder, and T.S. Murrell. 2021. Broadening the objectives of future potassium recommendations. pp. 385 to 416. In: T.S. Murrell, R.L. Mikkelson, G. Sulewski, R. Norton, and M.L. Thompson (eds.) Improving Potassium Recommendations for Agricultural Crops. Springer Nature Switzerland AG, Cham Switzerland. https://doi.org/10.1007/978-3-030-59197-7.

Brouder, S.M., J.J. Volenec, and T.S. Murrell. 2021. The potassium cycle and its relationship to recommendation development. pp. 1 to 46. In: T.S. Murrell, R.L. Mikkelson, G. Sulewski, R. Norton, and M.L. Thompson (eds.) Improving Potassium Recommendations for Agricultural Crops. Springer Nature Switzerland, Cham Switzerland AG. https://doi.org/10.1007/978-3-030-59197-7.

Bell, M.J., A.P. Mallarino, J.J. Volenec, S.M. Brouder, and D.W. Franzen. 2021. Considerations for selecting potassium placement methods in soil. pp. 341 to 362. In: T.S. Murrell, R.L. Mikkelson, G. Sulewski, R. Norton, and M.L. Thompson (eds.) Improving Potassium Recommendations for Agricultural Crops. Springer Nature Switzerland, Cham Switzerland AG. https://doi.org/10.1007/978-3-030-59197-7.                                                      

Extension

The goal of extension work is to provide the public with information on yield, quality, and persistence of perennial plants used for forage or biomass, especially as influenced by management and genetics.
 
Teaching
AGRY 52500 - Crop Physiology and Ecology
Dr. Volenec has developed Agronomy 525 to provide advanced undergraduate and graduate students with training in crop physiology. Volenec expands the knowledge acquired in plant physiology and biochemistry courses to address challenges encountered in management and genetic improvement of crops.
 
Professional Experience
1993-1994, Research Fellow, AFRC Institute of Grassland and Environmental Research, Aberystwyth, Wales, UK
1992-2009, Assistant Head, Agronomy Department, Purdue University
1992-present, Professor, Agronomy Department, Purdue University
1987-1992, Associate Professor, Agronomy Department, Purdue University
1983-1987, Assistant Professor, Agronomy Department, Purdue University
1979-1983, Graduate Research Assistant, University of Missouri
1975-1979, Undergraduate Research Assistant, University of Wisconsin
 
Awards and Honors
2020-2022 President-elect, President, Past-president of the American Society of Agronomy
2019-2020 Strategic Planning Leadership Team, American Society of Agronomy, Crop Science Society of American, Soil Science Society of America
2018-2020 Board of Directors, Council for Agric. Science and Technology, Plant Sci. Board Rep.
2016-2018 Board of Directors, American Society of Agronomy
2016-2018 Board of Directors, Crop Science Society of America (also 2011-2013, 1998-2003, 1992-1994)
2016-2018 Board of Directors, Soil Science Society of America
2014-2018 Trustee, Agronomic Science Foundation, Chair of the Board of Trustees from 2016-2018.
2014-present   Member/former Chair, ACSESS201.1-ACSESS Data Stewardship Task Force
2013-present   Board of Directors, Agronomic Science Foundation
2013   Past President, Crop Science Society of America
2012   President, Crop Science Society of America
2011-2013   Board of Directors, Alliance of Crops, Soils and Environmental Science Societies, Chair 2013
2011-2014   Section Affiliate, Biological Sciences and Agriculture, Am. Assoc. Adv. Sci.​
2011   President Elect, Crop Science Society of America
2008-2010   Program Planning Officer, American Society of Agronomy
2006-present   Graduate Research Faculty Member, University of Tasmania
2006   Certificant of Distinction, e-Courseware Development, Amer. Soc. Agronomy
2005-2011   Nonresident Fellow, Samuel Roberts Noble Foundation
2005   Outstanding Teaching Award, Dept. of Agronomy (also 1994, 1997, 2001, 2004)
2002   Outstanding Counselor Award, Dept. of Agronomy  (also 2000)
1998-2003   Editor-in-Chief, Crop Science Society of America
1998   Merit Award, American Forage and Grassland Council
1997   Fellow, American Association for the Advancement of Science
1994-1998   Editor, Crop Science
1993   CIBA-GEIGY Award in Agronomy
1993   Fellow, American Society of Agronomy
1993   Fellow, Crop Science Society of America
1993   Purdue University Agricultural Research Award
1992   Young Crop Scientist Award, Crop Science Society of America
1992-1993   Fellow, Experiment Station Committee on Organization and Policy (ESCOP)
1991   Indiana Forage Council Merit Award for Outstanding Contributions in Forage Science
Education
B.Sc., University of Wisconsin-Madison
M.Sc., University of Missouri-Columbia
Ph.D., University of Missouri-Columbia
 
Date joined staff:  May 1983
 

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

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