Extension Specialist IV, Plant Pathology
- BAAS. Biological Sciences. 1972. University of Delaware.
- M.S. Plant Pathology. Dept. of Plant Science. University of Delaware. 1974.
- Extension educational activities include visiting growers and diagnosing plant problems in the field, writing and making disease control recommendations for all commodities, presenting disease control information at educational meetings, participating in field days and training sessions for growers, scouts, fieldmen, and Master Gardeners. He also provides information on plant disease matters to government agencies and the public. He contributes to all Extension newsletters: Ornamentals Hotline and Weekly Crop Update for commercial growers and during the potato-growing season, faxes the Potato Disease Advisory report two times a week to our potato growers and industry representatives. He also supervises the operations of the Plant Diagnostic Clinic and the Nematode Advisory Service including nematode identification and enumeration.
Applied plant pathology research is conducted on a wide variety of crops. Fungicide efficacy and timing trials as well as variety trials for disease and nematode resistance are conducted yearly. Crops include soybeans, potatoes, small grains, corn, lima beans, and pickling cucumbers. Tests have also included ornamentals mostly rose disease control and powdery mildew on dogwood. Sentinel plots are established and monitored for soybean rust and downy mildew of cucurbits.
- American Phytopathological Society
- Society of Nematologists
- Potato Association of America
- International Society of Arboriculture
- Epsilon Sigma Phi
First Report of Mefenoxam Resistant Isolates of Phytophthora capsici from Lima Bean Pods in the Mid-Atlantic Region. J. F. Davey, N. F. Gregory, R. P. Mulrooney, T. A. Evans, and R. B. Carroll, Department of Plant and Soil Sciences, University of Delaware, Newark 19716-2170. Plant Disease. 2008. In press.
Davidson, C.R., T. A. Evans, R. P. Mulrooney, N. F. Gregory, R. B. Carroll and N.R. O’Neill. 2006. Lima bean downy mildew epidemics caused by new physiological races of Phytophthora phaseoli. Plant Disease. 2008. In press
Lima bean downy mildew: Impact, Etiology, and Management Strategies for Delaware and the Mid-Atlantic Region, US. T.A. Evans, R.P. Mulrooney, N.F. Gregory, and E. Kee. Plant Disease 92: 128-135, 2007.
Management of Xiphenema americanum and Soybean Severe Stunt in soybean using crop rotation. T.A Evans, L.C. Miller, B.L. Vasilas, R.W. Taylor, and R.P. Mulrooney. Plant Disease 92: 216-219, 2007.
The ‘Maffei 15’ Lima Bean Compensates for Reduced Plant Stand. Wallace G. Pill, Thomas A. Evans, Michael Olszewski, Robert P. Mulrooney, and Walter E. Kee, Jr. Dept. of Plant and Soil Sciences, University of Delaware, Newark, DE. HortScience 40(7):2024-2025.2005.
Sanatamaria, L., R.P. Mulrooney, S.L. Kitto. Screening for Root-Knot Nematode Response in Somaclonal Variants of Solanum quitoense Lam. Nematropica 34: 73-82, 2004.
Anthracnose Caused by Discula fraxinea on the New Host Chinese Fringetree and White Ash in Delaware. N. Fisher Gregory and R. P. Mulrooney, Department of Plant and Soil Sciences, University of Delaware, Newark, 19716; A. Y. Rossman and L. A. Castlebury, Systematic Botany and Mycology Laboratory, USDA-ARS, Beltsville, MD, 20705. Plant Dis. 88:427, 2004.
A Precision Planter for Large Seeds in Small Plots. Birmingham, A. M., Buzby, E.A., Davis, D.D., Benson, E.R., Glancy, J.L., Pill, W.G., Evans, T.A., Mulrooney, R.P., Olszewski, M.W. HortTechnology: 14(4):1-3. 2004.
First Report of Sudden Death Syndrome of Soybean in Delaware and Eastern Shore of Maryland. R. P. Mulrooney and N. Fisher Gregory, Dept. of Plant and Soil Sciences, S.D Walker, and A.-M. Webster. Plant Disease 86:696, 2002.
First Report of Phytophthora capsici Infecting Lima Bean (Phaseolus lunatus) in the Mid-Atlantic Region. C.R. Davidson, R.B.Carroll, T.A. Evans, R.P. Mulrooney, and S.H. Kim. Plant Disease 86:1049, 2002.
Two New Races of Phytophthora phaseoli from Lima Bean in Delaware. T.A. Evans, C.R. Davidson, J. D. Dominiak, R.P. Mulrooney, R.B. Carroll, and S. H. Antonius. Plant Disease 86: 813, 2002.
Etiology of Soybean Severe Stunt and Some Properties of the Causal Virus. Weldekidan,T., T.A. Evans, R.B. Carroll, and R.P. Mulrooney. Plant Disease. 76: 747-750
Evans, T.A., and R.P. Mulrooney. First Report of Watermelon Fruit Blotch in Delaware. Plant Disease. 75:1074.
Mulrooney, R.P., J.C. Windsor, and T.A. Evans. 1989. First Report of Wheat Spindle Streak Mosaic Virus in Delaware. Plant Disease 73: 444.
Mulrooney, R.P. Soybean Disease Loss Estimate for Southern United States in
1987. Plant Disease. 72:915.
Mulrooney, R.P. 1988. Soybean Disease Loss Estimate for Southern United States in 1985 and 1986. Plant Disease 72:364-365.
Mulrooney, R.P. 1985. Soybean Disease Loss Estimate for Southern United States in 1983. Plant Disease 69:92.
Field Testing Results:
Mulrooney, R.P. and H. Ford. 1986. Evaluation of Fungicide Seed Treatments for
Control of Root Rot in Peas. Fungicide-Nematicide Test Results 41: 133-134.
Mulrooney, R.P. 1989. Evaluation of Temik to Enhance Yield and Control Soybean Cyst Nematode on a Resistant and Susceptible Cultivar. Fungicide-Nematicide Test Results 45:159.
Mulrooney, R.P. 1981. Fungicide evaluations for control of downy mildew of baby lima beans, 1980. Fungicide& Nematicide Tests 36: 53.
R.P. Mulrooney, and R. B. Carroll. 1982. Fungicide Evaluation for Control of Downy Mildew of Baby Lima Beans, 1981. Fungicide and Nematicide Test Results 37:62.
R.P. Mulrooney. 1983. Fungicide Evaluation for Control of Downy Mildew of Baby Lima Beans, 1982. Fungicide and Nematicide Test Results 38:93.
R.P. Mulrooney. 1997. Evaluation of Foliar Fungicides to Control Pink Rot Caused by Phytophthora nicotianae, 1996. Fungicide and Nematicide Test Results 52:157.
Mulrooney, R.P. and Gregory, N.F. 2001. Evaluation of biorational fungicides for control of powdery mildew of flowering dogwood, 2001. Fungicide and Nematicide Tests 57: OT10.
R.P. Mulrooney, N.F. Gregory. Evaluation of fungicides for control of powdery mildew on flowering dogwood, 2003. Report 59:OT028.
Fungicide and Nematicide Test Results, 2004 volume 59. Online publication
R.P. Mulrooney. Evaluation of fungicides for control of powdery mildew on flowering dogwood, 2003. Report 59: OT029.
R.P. Mulrooney, W. G. Pill, T.A. Evans. Evaluation of seed treatment fungicides for the control of seedling diseases of baby lima beans, 2003. Report 59: ST003
J.F. Davey, R.P. Mulrooney, T.A. Evans, R.B. Carroll. Evaluation of fungicides for the control of downy mildew of baby lima bean, 2003. Report 59:V104.
J.F. Davey, R.P. Mulrooney, T.A. Evans, R.B. Carroll. Timing of preventative fungicide applications for the control of downy mildew of baby lima bean, 2003. Report 59: V105.
J.F. Davey, R.P. Mulrooney, T.A. Evans, R.B. Carroll. Timing of post-infection fungicide applications for the control of downy mildew of baby lima bean, 2003. Report 59: V106
Fungicide and Nematicide Test Results, 2005 volume 60. Online publications.
J.F. Davey, R.P. Mulrooney, T.A. Evans. Timing of Phostrol fungicide applications for control of downy mildew of baby lima bean, 2004. Report 60:V043
J.F. Davey, R.P. Mulrooney, T.A. Evans, R.B. Carroll. Timing of curative applications of fungicides for control of downy mildew of baby lima bean, 2004. Report 60: V042
J.F. Davey, R.P. Mulrooney, T.A. Evans, R.B. Carroll. Timing of protectant applications of fungicides for control of downy mildew of baby lima bean, 2004. Report 60: V041
J.F. Davey, R.P. Mulrooney, T.A. Evans, R.B. Carroll. Evaluation of fungicides for control of downy mildew of baby lima bean, 2004. Report 60: V040.
R.P. Mulrooney, N.F. Gregory. Evaluation of fungicides for the control of black spot and powdery mildew of rose, 2004. Report 60: OT017.
R.P. Mulrooney, N.F. Gregory. Evaluation of fungicides for control of powdery mildew on flowering dogwood, 2004. Report 60: OT016.
Fungicide and Nematicide Test Results, 2006 volume 61. Online publications.
R.P. Mulrooney, N.F. Gregory, T.A. Evans. Timing of curative fungicide applications for the control of downy mildew of baby lima bean, 2005. Report 61: V127
R.P. Mulrooney, N.F. Gregory, T.A. Evans. Evaluation of fungicides for the control of downy mildew of baby lima bean, 2005. Report 61: V126
Plant Disease Management Reports, 2007, volume1 (formerly F & N Test Results)
R. P. Mulrooney. Evaluation of fungicides for the control of black spot of rose, 2006. Report 1:OT002.
Evaluation of fungicides for the control of downy mildew of baby lima bean, 2006. Report 1:V056.
Timing of curative fungicide applications for the control of downy mildew of baby lima bean, 2006. Report 1:V055.
Biological and Cultural Test Results:
L. Santamaria, T. A. Evans, N. F. Gregory, N. F. Gregory, R. P. Mulrooney. 2006. Evaluation of lima bean cultivars from USDA and CIAT germplasm collection, 2005. Report 21: V008
L. Santamaria, T. A. Evans, N. F. Gregory, N. F. Gregory, R. P. Mulrooney. 2006. Evaluation of lima bean cultivars for resistance to downy mildew, 2005. Report 21:V007.
L. Santamaria, T.A. Evans, J. Davey, R. P. Mulrooney, R.B. Carroll. 2005. Evaluation of lima bean cultivars for resistance to downy mildew, 2004. Report 20: V014. On-line Report.
L. Santamaria, T. A. Evans, J. Davey, R. P. Mulrooney, R. B. Carroll. 2005. Evaluation of USDA and CIAT lima bean germplasm accessions for resistance to downy mildew, 2004. Report 20: V013.
L. Santamaria, T.A. Evans, W.G. Pill, J. Davey, R.P. Mulrooney, and R.B. Carroll. 2004. Evaluation of lima bean cultivars for resistance to downy mildew, 2003. Report 19:V016. On-line Report.
T.A. Evans, R. P. Mulrooney, W.G. Pill, L. Santamaria, J. Davey. 2003. Evaluation of lima bean cultivars for resistance to downy mildew, 2002. Report 18: V028. On-line Report.
C. R. Davidson, T. A. Evans, R. P. Mulrooney, R. B. Carroll. 2002. Evaluation of lima bean cultivars for resistance to downy mildew, 2001. Report 17: V03. On-line Report.
R. P. Mulrooney, C. R. Davidson, T. A. Evans, R. B. Carroll. 2001. Evaluation of lima bean cultivars for resistance to downy mildew, 2000. Report 16: V80. On-line Report.
Mulrooney, R.P., T.A. Evans and R.W. Taylor. 1999. Field evaluation of selected soybean
cultivars for resistance to soybean severe stunt virus, 1998. Biological and Cultural Control Tests. Vol 14: 95. The American Phytopathological Society, St. Paul, MN.
Mulrooney, R.P., T.A. Evans, and R.W. Taylor. 1998. Evaluation of selected soybean cultivars for resistance to soybean severe stunt virus, 1997. Biological and Cultural Control Tests. Vol 13: 87. The American Phytopathological Society, St. Paul, MN.
R.P. Mulrooney, T.A.Evans, and R.W. Taylor.1997. Field Evaluation of Selected Soybean Cutlivars for Resistance to Soybean Severe Stunt Virus, 1996. Biological and Cultural Tests for Control of Plant Diseases 12: 85.
Contact Information:
Bob Mulrooney
Extension Plant Pathologist
148 Townsend Hall
Plant and Soil Sciences Dept
University of Delaware
Newark, DE 19716-2170
Phone: 302-831-4865
Fax: 302-831-0605
email: bobmul@udel.edu