Four research topics are currently being examined in detail.
Characterize mechanisms controlling synthesis and degradation of organic reserves (starches, sugars, and storage proteins) in storage organs, and understand the role of organic reserves in plant growth and stress tolerance.
Conduct comparative analysis of water and nitrogen use by candidate biofuels species. These analyses aim to identify those species and cropping systems that maximize production of cellulose, hemicellulose, and nonstructural carbohydrates while minimizing environmental impacts.
Determine the physiological and molecular mechanisms controlling fall dormancy, and how these impact winter hardiness and growth of alfalfa.
Understand how potassium and phosphate nutrition impact forage growth and persistence, and the underlying physiological and biochemical processes that mediate agronomic performance. This is part of a large collaborative effort on potassium nutrition research at Purdue University. Details of this effort can be found at the K-Team website.
Ventroni, L.M., J.J. Volenec, and C.C. Cangiano. 2010. Fall dormancy and cutting frequency impact on alfalfa yield and yield components. Field Crops Res. 119:252-259.
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. 61:503-511.
Pembleton, K.G., D.J. Donaghy, J.J. Volenec, R.S. Smith, and R.P. Rawnsley. 2010. Yield, yield components and shoot morphology of four contrasting lucerne (Medicago sativa) cultivars grown in 3 cool temperate environments. Crop Pasture Sci. 61:503-511.
Fernández F.G., S.M. Brouder, J.J. Volenec, C.A. Beyrouty, and R. Hoyum. 2011. Soybean shoot and root response to localized water and potassium in a split-pot study. Plant Soil. 344:197-212.
Lissbrant, S., S.M. Brouder, S.M. Cunningham, and J.J. Volenec. 2010. Identification of fertility regimes that enhance long-term productivity of alfalfa (Medicago sativa L.) using cluster analysis. Agron. J. 102:580-591.
Pembleton K.G., J.J. Volenec, R.P. Rawnsley, and D.J. Donaghy. 2010. Partitioning of taproot assimilates and crown bud development are affected by water deficit in regrowing alfalfa (Medicago sativa L.). Crop Sci. 50:989-999.
Volenec, J.J. and S.M. Brouder. 2010. Water-use efficiency in biomass cropping systems. pp. 18-19. In: Proc. 2nd China-US Workshop on Biotechnology of Bioenergy Plants. Beijing, China. September 19-21.
Brouder, S.M., R.F. Turco, and J.J. Volenec. 2010. Nitrogen use efficiency in bioenergy cropping systems. pp. 27-29. In: Proc. 2nd China-US workshop on Biotechnology of Bioenergy Plants. Beijing, China. September 19-21.
Burks, J., J.J. Volenec, and S.M. Brouder. 2010. Nutrient cycling dynamics in perennial bioenergy crops. pp. 24. In: Proc. China-US 2010 Joint Symp. on Energy, Ecosystem, and Environmental Change. Beijing, China. September 22-24.
Volenec, J.J., S.M. Brouder, and R.F. Turco. 2010. Agroecological considerations when growing biomass. pp. 39-40. In: Proc. China-US 2010 Joint Symp. on Energy, Ecosystem, and Environmental Change. Beijing, China. September 22-24.
Brouder, S.M., J.J. Volenec, R. Turco, D.R. Smith, G. Ejeta. 2009. Nutrient-use efficiency in bioenergy cropping systems: Critical research questions. Keynote Address. In Proc. of the XVI International Plant Nutrition Colloquium: Plant Nutrition for Sustainable Development and Global Health, Aug. 26-30, Sacramento, CA 9 pp.
Pembleton K.G., R.P. Rawnsley, D.J. Donaghy, and J.J. Volenec. 2009. Water deficit alters canopy structure but not photosynthesis during the regrowth of alfalfa (Medicago sativa L.). Crop Sci. 49:722-731.
Lissbrant, S., S. Stratton, S.M. Cunningham, S.M. Brouder, and J.J. Volenec. 2009. Impact of long-term phosphorus and potassium fertilization on alfalfa forage quality-yield relationships. Crop Sci. 49:1116-1124.
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.
Robinson, A.P., S.P. Conley, J.J. Volenec, and J.B. Santini. 2009. Analysis of high-yielding, early-planted soybean in Indiana. Agron. J. 101:131-139.
Fernández F.G., S.M. Brouder, J.J. Volenec, C.A. Beyrouty, and R. Hoyum. 2009. Root and shoot growth, seed composition, and yield of no-till soybean under variable potassium. Plant Soil (doi 10.1007/s11104-009-9900-9) 322:125–138.
Brouder, S.M. and J.J. Volenec. 2008. Impact of climate change on crop nutrient and water use efficiencies. Physiol. Plant. 133:705-724.
Fernández F.G., S.M. Brouder, C.A. Beyrouty, J.J. Volenec, and R. Hoyum. 2008. Assessment of plant available potassium for no-till, rainfed soybean. Soil Sci. Soc. Amer. J. 72:1085-1095.
Patton, A.J., S.M. Cunningham, J.J. Volenec, and Z.J. Reicher. 2007. Differences in freeze tolerance of zoysiagrasses. II. Carbohydrate and proline accumulation. Crop Sci. 47:1270-1281.
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.
Patton, A.J., J.J. Volenec, and Z.J. Reicher. 2007. Stolon growth and dry matter partitioning explain differences in zoysiagrass establishment rates. Crop Sci. 47:1237-1245.
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.
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.
Cherney, J.H., K.D. Johnson, J.J. Volenec, and K.S. Anliker. 1989. Chemical composition of herbaceous grass and legume species. Biomass 17:215-238.
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.
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.
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:
2010, 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
B.Sc., University of Wisconsin-Madison
M.Sc., University of Missouri-Columbia
Ph.D., University of Missouri-Columbia
Date joined staff: May 1983