Renae Moran

Renae MoranAssociate Professor of Pomology; Tree Fruit Specialist
School of Food and Agriculture
University of Maine Cooperative Extension
Highmoor Farm
PO Box 179
52 U.S. Route 202
Monmouth, ME 04259-0179

Degree: Ph.D., University of Arkansas, 1996

Research Topic: Apple cold-hardiness; root-stick development; post-harvest

Overview of Research: There are two major goals of the University of Maine apple research program. One is to improve the yield of new orchards through better rootstocks and through pre-plant soil amendments. Because apple trees in Maine are slow growing, they take an extra year to come into production. Through pre-plant soil amendments and precocious rootstocks, early yield can be increased, but planting costs may be substantially increased. We are evaluating the cost effectiveness of these methods. The second objective is to increase competitiveness of New England apples by planting better quality varieties and through improved storage methods. Traditional varieties such as McIntosh are high quality varieties at harvest. However, because they soften quickly after harvest, they are less competitive with crisp varieties. Honeycrisp is a new variety with outstanding eating quality but it is prone to storage disorders. Current projects are testing different storage methods to prevent these disorders.

Representative Publications
Marini, R.P., R. Moran, C. Hampson, M. Kushad, R.L. Perry, and T.L. Robinson. 2008. Effect of dwarf apple rootstocks on average ‘Gala’ fruit weight at six locations over three seasons. J. Amer. Pom. Soc. 62:129-136.

Marini, R.P., B.H. Barritt, G.R. Brown, J. Cline, W.P. Cowgill, R. M. Crassweller, P.A. Domoto, D.C. Ferree, J. Garner, G.M. Greene, C. Hampson, P. Hirst, M.M Kushad, J. Masabni, E. Mielke, R. Moran, C.A. Mullins, M. Parker, R.L. Perry, J.P. Privé, G.L. Reighard, T. Robinson, C.R. Rom, T. Roper, J.R. Schupp, E. Stover, and R. Unrath. 2006. Performance of ‘Gala’ apple on four semi-dwarf rootstocks: a ten-year summary of the 1994 NC-140 semi-dwarf rootstock trial. J. Amer. Pom. Soc. 60:58-68.

Marini, R.P., J.L Anderson, W.R. Autio, B.H. Barritt, J. Cline, W.P. Cowgill, R. M. Crassweller, R.M. Garner, A. Gauss, R. Godin, G.M. Greene, C. Hampson, P. Hirst, M.M Kushad, J. Masabni, E. Mielke, R. Moran, C.A. Mullins, M. Parker, R.L. Perry, J.P. Privé, G.L. Reighard, T. Robinson, C.R. Rom, T. Roper, J.R. Schupp, E. Stover, and R. Unrath. 2006. Performance of ‘Gala’ apple on 18 dwarfing rootstocks: ten-year summary of the 1994 NC-140 rootstock trial. J. Amer. Pom. Soc. 60:69-83.

Moran, R.E. 2006.Maintaining fruit firmness of ‘McIntosh’ and ‘Cortland’ apples with aminoethoxyvinylglycine and 1-methylcyclopropene during storage. HortTechnology 16(3):1-4.

Miller, S.S., R.W. McNew, B. H. Barritt, L. Berkett, S.K. Brown, J.A. Cline, J.M. Clements, W.P. Cowgill, R.M. Crassweller, M.E. Garcia, D.W. Greene, G.M. Greene, C.R. Hampson, I. Merwin, D.D. Miller, R.E. Moran, C.R. Rom, T.R. Roper, J.R. Schupp, and E. Stover. 2005. Effect of cultivar and site on fruit quality as demonstrated by the NE-183 regional project on apple cultivars. HortTechnology 15:886-895.

Moran, R.E. and J.R. Schupp. 2005. Preplant monoammonium phosphate fertilizer and compost affects the growth and yield of newly-planted ‘Macoun’ apple trees. HortScience 40:1854-1856.

Moran, R.E. and P. McManus. 2005. Firmness retention, and prevention of coreline browning and senescence in ‘Macoun’ apple fruit with 1-methylcyclopropene. HortScience 40:161-163.

Watkins, C.B., M. Erkan, J.F. Nock, K.A. Iungerman, and R.E. Moran. 2005. Harvest date effects on maturity, quality and storage disorders of ‘Honeycrisp’ apples. HortScience 40:164-169.

Crassweller, R., R. McNew, A. Azarenko, B. Barritt, R. Belding, J. Cline, W. Cowgill, D. Ferree, E. Garcia, D. Greene, G. Greene, C. Hampson, I. Merwin, D. Miller, S. Miller, R. Moran, M. Parker, D. Rosenberger, C. Rom, T. Roper, J. Schupp, and E. Stover. 2005. Five year summary of NE-183 apple cultivar trial – growth and yield characteristics. J. Amer. Pom. Soc. 59:18-27.

Zhang, D., R.E. Moran, and L.B. Stack. 2004. Effect of phosphorus fertilization on growth and flowering of Scaevola aemula R. Br. ‘New Wonder’. HortScience 39:1728-1731.

Greene, D., A. Azarenko, B. Barritt, B. Belding, L. Berkett, J. Cline, W. Cowgill, D. Ferree, E. Garcia, G. Greene, C. Hampson, R. McNew, I. Merwin, D. Miller, S. Miller, R. Moran, M. Parker, D. Rosenberger, C. Rom, T. Roper, J. Schupp, and E. Stover. 2004. Multidisciplinary evaluation of new apple cultivars: the NE-183 regional project. J. Amer. Pom. Soc. 58:61-64.

Miller, S., R. McNew, R. Belding, L. Berkett, S. Brown, J. Clements, J. Cline, W. Cowgill, R. Crassweller, E. Garcia, D. Greene, G. Greene, C. Hampson, I. Merwin, R. Moran, T. Roper, J. Schupp, and E. Stover. 2004. Performance of apple cultivars in the 1995 NE-183 regional project planting: II. Fruit quality characteristics. J. Amer. Pom. Soc. 58:65-77.

Hampson, C.R., R. McNew, A. Azarenko, L. Berkett, B. Barritt, R. Belding, S. Brown, J. Clements, J. Cline, W. Cowgill, R. Crassweller, E. Garcia, D. Greene, G. Greene, I. Merwin, D. Miller, S. Miller, R. Moran, J.D. Obermiller, C. Rom, T. Roper, J. Schupp, and E. Stover. Performance of ‘Braeburn’, ‘Golden Delicious’ and ‘Yataka Fuji’ apple on Mark and M.9 rootstocks at multiple locations across North America. 2004. J. Amer. Pom. Soc. 58:78-89.