COURSES TAUGHT:

Production and Physiology of Horticultural Plants - HORT 352

• Perennial, Pot and Bedding Plant Production Laboratory - HORT 355 (Undergraduate level);
• Nursery Management and Crop Production - HORT 362 (Undergraduate level);
• Woody Plant Growth & Development HORT/NRES/BIOS 849 (Graduate level);
• Plant Nutrition and Nutrient Management HORT/AGRO 425/825; KSU 775 (Undergraduate/graduate level) - a distance course taught in conjunction with Dr. Kim Williams at Kansas State University and Dr. Dan Walters, Soil Scientist at UNL.
• Plant Science - AGRO/HORT 131 - With Dr. Don Lee , Main Instructor and Dr. Tim Arkebauer

RESEARCH INTERESTS:

Research

The purpose of our lab is to offer training to graduate students (and upper division undergraduate students) in research methods that involve the growing of floricultural and ornamental plants, and the execution complex plant nutritional experiments. We will train undergraduate and graduate students in sectioning and embedding plant material for light and fluorescence microscopy.

The laboratory technologist is Liz Conley, M. S. She coordinates all efforts in the laboratory and is responsible for equipment training, lab procedure training and equipment check-out. The lab is located in Rm.384 Plant Sciences and Liz can be be contacted at 2-2850 or via email at mconley2@unl.edu.

Research Focus

Our main research focus is on the broad topic of leaf yellowing and subsequent re-greening of leaves. We are approaching this topic using physiological, anatomical, and molecular biological methods.

Our current project right now involve Swedish ivy and Arabidopsis and their ability to re-green after nitrogen deficiency. We have worked out a protocol for protein separation by 2-D gel electrophoresis and are working on total carbohydrate analysis also. We will also view these symptoms utilizing light, fluorescence, confocal and electron microscopy.

Applied Research - Field Trials

Additionally, Dr. Paparozzi and Mr. Stacy Adams, Horticulture Greenhouse Manager, jointly conduct Field Trials featuring Fischer and geraniums, impatiens and begonias for Horticulture's Landscape Connections. This summer, 2005, over 167 different varieties or cultivars of annual flowers are part of these research trials.

SELECTED PUBLICATIONS:

• Paparozzi, E. T. 2008. Anatomical and physiological changes that occur during rooting of cuttings. In Plant Propagation Concepts and Laboratory Exercises. C. Beyl and R. Trigano. CRC Press (due out during Spring 2008).
  
  
• Spaw, M., K. Williams, I. Mallberg, L. Hodges and E. T. Paparozzi. 2008. Bleeding hearts turn yellow: A case study to determine the cause of chlorosis in a crop of cut Dicentra spectabilis. HortTechnology 18:1-10. (featured in Spotlight section)
  
  
• Widhalm, J. R., J. M Stone and E. T. Paparozzi. 2007. Nitrogen deficiency-induced senescent A. thaliana rosette leaves accumulate defense-related proteins. Plant biology and Botany Poster Abstracts. P. 59.
  
  
• Kocamaz, C., E.T. Paparozzi and S. Kachman. 2006. Evaluation of alternative methods of applying sulfur fertilizers to chrysanthemum. J. Plant Nutrtition 29(2):361-374.
  
  
• Guo, S. Stroup, W., Paparozzi, E. T. and M. E. Conley. 2006. A comparison of models and designs for experiments with nonlinear dose-response relationships. Proceedings 18th Conference on Applied Statistics in Agriculture. Manhattan, KS: Kansas State University Department of Statistics. pp. 214-241.
  
  
• Paparozzi, E. T., W. W. Stroup and M. E. Conley. 2005. How to investigate four-way nutrient interactions in plants: A new look at response surface methods. Journal American Society for Horticultural Science 130(3):459-468. Cover photo !
  
  
• Thomas, D. M. and E. T. Paparozzi. 2004. Effect of chelates versus ionic salts of microelements and nitrogen form on hydroponic solution pH. J. Plant Nutrition 27: 1029-1041.
  
  
• Paparozzi, E. T. 2003. Nutrition of floricultural crops: How far have we come? HortScience 38:1-5.
  
  
• Paparozzi, E. T. and M . E. Conley. 2003. Choosing a model system for studies of leaf re-greening. Acta horticulturae 624: 323-327.
  
  
• Williams, K. A. and E. T. Paparozzi. 2002. Model to develop a Synchronous, inter-institutional course using distance technologies. NACTA Journal 46:28-33.
  
  
• Conley, M. E. , E. T. Paparozzi and W. W. Stroup. 2002. Leaf anatomical and nutrient concentration responses to nitrogen and sulfur applications in poinsettia. J. Plant Nutrition 25 (8):1773-1791.
  
  
• Moreno-Sotomayor, A., A. Weiss, E. T. Paparozzi and T. J. Arkebauer. 2002. Leaf anatomy and light response curves of field grown maize as a function of age and nitrogen status. J. Plant Physiology 159(8):819-826.
  
  
• Ergun, M., E. T. Paparozzi, D. P. Coyne, D. Smith, S. Kachman and D. P. Coyne. 2001. Testing the effects of moisture on seed coat color of pinto dry beans. HortScience36: 302-304.
  
  
• Olson, L. M., W. W. Stroup, E. T. Paparozzi and M. E. Conley. 2001. Model building in multi-factor plant nutrition experiments. p.183-206. In: Proceedings 12th Conference on Applied Statistics in Agriculture. Department of Statistics. Kansas State University, Manhattan, KS.
  
  
• Macz, O., Paparozzi, E. T. and W. W. Stroup. 2001. The effect of nitrogen and sulfur applications on pot chrysanthemum production and post-harvest perfromance I. Leaf nitrogen and sulfur concentrations. J. Plant Nutrition 24(1):111-130.
  
  
• Macz, O., Paparozzi, E. T., W. W. Stroup, R. Leonard and T. A. Nell. 2001. The effect of nitrogen and sulfur applications on pot chrysanthemum production and post-harvest performance II. Plant growth responses. J. Plant Nutrition 24(1):131-146.
  
  
• Ergun, M., E. T. Paparozzi, D. P. Coyne, D. Smith, S. Kachman and D.S. Nuland. 2001. Testing the effects of moisture on seed coat color of Pinto dry beans. HortScience 36(2):302-304.
  
  
• R. D. Landes, W. W. Stroup, E. T. Paparozzi and M. E. Conley. 2000. Nonlinear models for multi-factor plant nutrition experiments. p. 105-119. In: G. Milliken (ed), Proceedings 11th Conference on Applied Statistics in Agriculture. Department of Statistics, Kansas State University, Manhattan, KS.
  
  
• Paparozzi, E. T. and K. A. Williams. 2000. Using chat rooms in a plant nutrition course: bane or boon? HortTechnology 10 (2): 280-282.