MSU Extension Vegetables

Zhang, W., Li, H., Hausbeck, M.K., and Tiedje, J.M.   Emerging trends on biocolloids in agroecosystems.  Second International Conference on All Material Fluxes in River Eco-Systems, Beijing, China, 11-13 Oct.

Mambetova, S., Hausbeck, M.K., Hammerschmidt, R., Hutchinson, C., Werling, B., and Rosenzweig, N.  2019.  Integrated management of turnip scab caused by Streptomyces spp.  Phytopathology 109(10S):S2.27.

Getson, S.E., Harlan, B.R., Brisco, E., and Hausbeck, M.K.  2019.  Evaluation of management strategies for Fusarium crown and root rot in Michigan asparagus.  Phytopathology 109(10S):S2.52-53.

Shrestha, S.  2019.  Susceptibility of geranium cultivars to Botrytis cinerea in the greenhouse.  Phytopathology 109(10S):S2.93.

Lukasko, N., Harlan, B.R., and Hausbeck, M.K.  2019.  Susceptibility of geranium and snapdragon cultivars to Pythium irregulare.  Phytopathology 109(10S):S2.93-94.

Perla, D., and Hausbeck, M.K.  2019.  Evaluation of tomato cultivars and OMRI fungicides for late blight.  Phytopathology 109(10S):S2.96.

Higgins, D.S., M. Byrne, J.M., Hausbeck, M.K., and Miles, T.D.  2019.  An emerging pathogen (Diaporthe sp.) of hop (Humulus lupulus) associated with foliar necrosis in commercial production yards in Michigan.  Phytopathology 109(10S):S2.111.

Mambetova, S., Rosenzweig, N., Blaine. K., Hausbeck, M.K., Werling, B., and Hammerschmidt, R.  2019.  Characterization of pathogenic Streptomyces spp. causing scab in Michigan potato, turnip and beet production.  Phytopathology 109(10S):173.

Bello, J., Hausbeck, M.K., and Sakalidis, M.L.  2019.  Genotyping of the downy mildew species Pseudoperonospora cubensis and P. humuli using target genome sequencing.  Phytopathology 109(10S):S2.187.

Getson, S.E., Shemanski, J., and Hausbeck, M.K.  2019.  Survey of Fusarium species associated with Michigan asparagus.  Phytopathology 109(9):S1.28.

Higgins, D.S., and Hausbeck, M.K.  2018.  Effective management strategies for hop downy mildew (Pseudoperonospora humuli) in Michigan.  Phytopathology 108(12S):S2.28.

Bello, J., Hausbeck, M.K., Sakalidis, M.L.  2018.  Detection of the cucurbit downy mildew pathogen using spore traps coupled with qPCR.  Phytopathology 108(12S):S2.22.

Alzohairy, S.A., Moore, B., Hammerschmidt, R., Shiu, S.H., and Hausbeck, M.K.  2018.  Characterization of winter squash age-related resistance to Phytophthora capsici through fruit peel transcriptome profiling.  Phytopathology 108(10S):S1.41-S1.42.

Guo, Y., Krasnow, C., and Hausbeck, M.K.  2018.  Population structure, virulence and resistance to mefenoxam of Phytophthora capsici in Michigan.  Phytopathology 108(10S):S1.87.

Higgins, D.S., and Hausbeck, M.K.  2017.  Fungicides and cultivars can limit hop downy mildew (Pseudoperonospora humuli) in Michigan.  Phytopathology 107(12S):S5-78.

Alzohairy, S.A., Hammerschmidt, R., and Hausbeck, M.K.  2017.  Characterization of the structural basis of winter squash fruit age-related resistance to Phytophthora capsici.  Phytopathology 107(12S):S5-120.

Guo, Y., Torres-Londono, G.A., and Hausbeck, M.K.  2017.  Population genetic analysis for a worldwide collection of Phytophthora palmivora.  Phytopathology 107(12S):S5-126.

Bello, J., Guo Y., and Hausbeck, M.  2016.  Population structure of Pseudoperonospora cubensis isolates in Michigan and Ontario, Canada.  Phytopathology 106 (Suppl.):S4.140.

Del Castillo Munera, J., Higgins, D., Harlan, B., and Hausbeck, M.  2016.  Occurrence and management of hop (Humulus lupulus) powdery mildew (Podosphaera macularis) in Michigan.  Phytopathology 106 (Suppl.):S4.187.

Donne, I., and Hausbeck, M.  2016.  Managing carrot foliar blight caused by Alternaria dauci in Michigan using biorationals or TOMCAST.  Phytopathology 106 (Suppl.):S4.187.

Krasnow, C.S., and Hausbeck, M.K.  2016.  Age-related resistance of Cucurbita spp. fruit to Phytophthora capsici.  Abstr.  Phytopathology 106 (Suppl.):S1.5.

Neils, A.L., and Hausbeck, M.K.  2016.  Leaf blight is in the forecast.  Abstr.  Phytopathology 106 (Suppl.):S1.6.

Hausbeck, M.K., and Escobar-Ochoa, C.  2016.  Pythium spp. associated with root rot of celery seedlings in Michigan’s commercial greenhouses and fields.  Abstr.  Phytopathology 106 (Suppl.):S1.3.

Wiriyajitsomboon, P., and Hausbeck, M.K.  2015.  Assessment of soil-applied fungicides for control of onion pink root.  Phytopathology 105(Suppl. 4):S4.149.

Pavel, J., Liu, B., Feng, C., Correll, J.C., May, S.R., Gugino, B.K., del Mar Jimenez-Gasco, M., Hausbeck, M.K., Raid, R.N., and Koike, S. T.  2015.  Pathogenicity and phylogenetics of the celery anthracnose pathogen, Colletotrichum fioriniae (= C. acutatum sensu lato).  Phytopathology 105(Suppl. 4):S4.109.

Naegele, R., Quesada-Ocampo, L.M., Kurjan, J., Saude, C., and Hausbeck, M.K.  2015.  Spatiotemporal population structure of Pseudoperonospora cubensis isolates in Michigan and Ontario, Canada.  Phytopathology 105(Suppl. 4):S4.99.

Del Castillo, J., Quesada-Ocampo, L., Rojas, A., Chilvers, M., and Hausbeck, M.K.  2015.  Population structure of Pythium ultimum from greenhouse floral crops in Michigan.  Phytopathology 105(Suppl. 4):S4.34.

Hausbeck, M.  2015.  How can we minimize our losses?  Control strategies in downy mildew systems.  Phytopathology 105(Suppl.):S4.169.

Townes, A., and Hausbeck, M.K.  2014.  From drupe to seedling: Seed pathology of American ginseng.  Phytopathology 104(Suppl. 3):S3.176.

Torres-Londono, G., Hao, J., and Hausbeck, M.K.  2014.  Development of R-based software for analysis of spiral gradient endpoint.  Phytopathology 104(Suppl. 3):3.176.

Naegele, R.P., Kurjan, J., Quesada-Ocampo, L.M., and Hausbeck, M.K.  2014.  Temporal changes in Pseudoperonospora cubensis field populations in Michigan cucumber.  Phytopathology 104(Suppl. 3):S3.84.

Naegele, R.P., Tomlinson, A., and Hausbeck, M.K.  2013.  Phytophthora fruit rot resistance, population structure, and genetic diversity in a diverse pepper (Capsicum spp.) collection.  Phytopathology 103(Suppl. 2):S2.101.

Naegele, R., Ashrafi, H.A., Hill, T., Reyes Chin-Wo, S., Van Deynze, A., and Hausbeck, M.  2013.  QTL mapping of fruit rot resistance to the plant pathogen Phytophthora capsici L. in a recombinant inbred line Capsicum annuum L. population.  Phytopathology 103(Suppl. 2):S2.101.

Granke, L., Morrice, J., VanOverbeke, M., Carnago, G., Pianosi, A., and Hausbeck, M.K.  2013.  Influence of environmental factors on aerial concentrations of Pseudoperonospora cubensis sporangia and cucumber downy mildew disease severity.  Phytopathology 103(Suppl. 2):S2.52.

Granke, L.L., Quesada, L.M., Cortright, B., and Hausbeck, M.K.  2012.  Monitoring Pseudoperonospora cubensis sporangia dynamics and population structure and testing fungicide efficacy to better control cucurbit downy mildew.  Phytopathology 102(Suppl. 5):S5.4.

Naegele, R.P., Tomlinson, A., Gutting, H., Boyle, S., and Hausbeck, M.K.  2012.  Evaluation of resistance to Phytophthora-induced fruit rot and its correlation with fruit traits in Capsicum annuum.  Phytopathology 102:S4.85.

Granke, L., Quesada-Ocampo, L.M., Lebeis, A., Henderson, L., VanOverbeke, M., and Hausbeck, M.  2012.  Morphological and physiological variation within Phytophthora capsici isolates from a worldwide collection.  Phytopathology 102:S4.47.

Quesada-Ocampo, L., Granke, L., Mercier, M., Olsen, J., and Hausbeck, M.  2011.  Investigating the genetic structure of Phytophthora capsici populations.  Phytopathology 101:S149.

Quesada-Ocampo, L., Granke, L., Olsen, J., Gutting, H., Runge, F., Thines, M., Lebeda, A., and Hausbeck, M.  2011.  The genetic structure of Pseudoperonospora cubensis global populations.  Phytopathology 101:S149.

Lu, X., Hausbeck, M., Liu, X., and Hao, J.J.  2011.  Risk assessment of Phytophthora capsici resistant to fluopicolide.  Phytopathology 101:S110.

Granke, L., Quesada-Ocampo, L.M., Lebeis, A., Henderson, VanOverbeke, M., and Hausbeck, M.  2011.  Global phenotypic variation in Phytophthora capsici.  Phytopathology 101:S63.

Granke, L., Quesada-Ocampo, L.M., Wood, M., Olsen, J., Mercier, M., and Hausbeck, M.  2011.  Differences in virulence of Phytophthora capsici isolates from a global collection.  Phytopathology 101:S63.

Rodríguez-Salamanca, L., and Hausbeck, M.  2010.  Asparagus as host of Phythophthora species prevalent in Michigan and its importance as rotational crop.  Phytopathology 100:S176.

Granke, L.L., and Hausbeck, M.K.  2010.  The effects of temperature, humidity, and wounding on development of Phytophthora rot of cucumber.  Phytopathology 100:S43.

Enzenbacher, T.B., and Hausbeck, M.K.  2010.  Isolates of Phytophthora capsici differ in their ability to cause disease on cucurbit fruits.  Phytopathology 100:S34.

Granke, L., and Hausbeck, M.  2010.  Influence of environment on periodicity and concentration of airborne Pseudoperonospora cubensis sporangia in commercial cucurbit fields.  Phytopathology 100:S43.

Quesada-Ocampo, L.M., and Hausbeck, M.K.  2009.  Global diversity of Phytophthora capsici.  Pages 13-14 in: Proceedings of the 2nd International Phytophthora capsici Conference, Hawks Cay, Duck Key, FL, 1-2 Dec 2009.

Quesada-Ocampo, L.M., and Hausbeck, M.K.  2009.  Resistance in tomato and wild relatives to Phytophthora capsici.  Page 15 in: Proceedings of the 2nd International Phytophthora capsici Conference, Hawks Cay, Duck Key, FL, 1-2 Dec 2009.

Granke, L., and Hausbeck, M.K.  2009.  Dispersal and movement mechanisms of Phytophthora capsici sporangia.  Page 10 in: Proceedings of the 2nd International Phytophthora capsici Conference, Hawks Cay, Duck Key, FL, 1-2 Dec 2009.

Granke, L. L. and Hausbeck, M. K. 2009.  Relationships between airborne Pleospora herbarum and Alternaria sp. spores in no-till asparagus fields.  Page 90 in: XIIth International Asparagus Symposium, 29 Oct-1 Nov, Lima, Peru.

Rodríguez-Salamanca, L.M., Foster, J.M., and Hausbeck, M.K. 2009.  Greenhouse and field herbicide evaluation on asparagus plants.  Page 76 in: XIIth International Asparagus Symposium, 29 Oct-1 Nov, Lima, Peru.

Granke, L., Windstam, S.T., Hoch, H.C., Smart, C. D., and Hausbeck M.K.  2009.  Dispersal and movement mechanisms of Phytophthora capsici sporangia.  Phytopathology 99:S46.

Morris, A.F., Hammerschmidt, R., and Hausbeck, M.K.  2009.  Effect of jasmonic acid on foliar diseases of American ginseng.  Phytopathology 99:S89.

Quesada-Ocampo, L.M., and Hausbeck, M.K.  2009. Resistance in tomato and wild relatives to Phytophthora capsici.  Phytopathology 99:S106.

Wang, X., Harlan, B., and Hausbeck, M.  2009.  Evaluation of fungicide treatments for control of soilborne pathogens of American ginseng.  Phytopathology 99:S137.

Windstam, S.T., Gutting, H.C., Henderson, L.A., Hausbeck, M.  2009.  Population structure of Phytophthora capsici in a yellow squash field in Michigan.  Phytopathology 99:S142.

Windstam, S.T., Granke, L.L., Hoch, H.C. Hausbeck M.K., and Smart, C.D.  2009. Pathogenic development of Phytophthora capsici on cucumber fruits.  Phytopathology 99:S142.

Day, B., and Hausbeck, M.  2009.  Epidemiology of downy mildew: A regional and molecular approach.  Phytopathology 99:S172.

Foster, J., and Hausbeck, M.  2008.  Evaluating commercial and breeding lines of bell peppers for resistance to Phytophthora root, crown and fruit rot.  Page 32 in: Proceedings of the 19th International Pepper Conference, Sep 7-10, Atlantic City, NJ.

Hill, S.N., and Hausbeck, M. K.  2008.  Epidemiology of Alternaria panax and forecasting disease in American ginseng.  Journal of Plant Pathology 90(2, Supplement):S2.161-S2.162.

Sconyers, L.E., and Hausbeck, M.K.  2008.  Influence of greenhouse environment on atmospheric Erysiphe cichoracearum conidia and disease on Gerbera jamesonii.  Journal of Plant Pathology 90(2, Supplement):S2.190.

Saude, C., Hurtado-Gonzales, O.P., Lamour, K.H., and Hausbeck, M.K.  2008.  Occurrence and characterization of a Phytophthora sp. pathogenic to Asparagus officinalis in Michigan.  Journal of Plant Pathology 90(2, Supplement):2.420.

Savory, E.A., Tian, M., Erhardt, C., Hausbeck, M., Hammerschmidt, R., and Day, B.  2008.  An integrative approach to characterizing the cucumber-Pseudoperonospora cubensis interaction.  Phytopathology 98:S140.

Quesada-Ocampo, L.M., Fulbright, D.W., and Hausbeck, M.K.  2008.  Fraser fir, a new host of Phytophthora capsici.  Phytopathology 98:S129.

Hill, S.N., and Hausbeck, M.K.  2008.  Pathology and treatment of American ginseng seed.  Phytopathology 98:S67.

Granke, L.L., and Hausbeck, M.  2008.  Epidemiology of Phytophthora capsici in water.  Phytopathology 98:S61.

Ngouajio, M., Hausbeck, M.K., and Counts, J.W.  2007.  Greenhouse-grown transplants as alternative planting material for management of soilborne diseases in asparagus.  HortScience 42 (Suppl.):850-851.

Quesada-Ocampo, L.M., Fulbright, D.W., and Hausbeck, M.K.  2007.  Susceptibility of Fraser fir to Phytophthora capsici.  Phytopathology 97:S95.

Gevens, A.J., Donahoo, R.S., Lamour, K.H., and Hausbeck, M.K.  2006.  Identification and characterization of Phytophthora capsici on bean in Michigan.  Phytopathology 96:S39.

Hill, S.N., and Hausbeck, M.K.  2006.  Influence of environment on atmospheric concentrations of Alternaria panax conidia in cultivated American ginseng gardens.  Phytopathology 96:S48.

Saude, C., Counts, J.W., and Hausbeck, M.K.  2006.  A survey of pre- and post-harvest fungal diseases of carrot roots (Daucus carota L.) in Michigan.  Phytopathology 96:S103.

Saude, C.C., and Hausbeck, M.K.  2006.  Occurrence of rubbery brown rot or Phytophthora root rot of carrots (Daucus carota L.) in Michigan.  Phytopathology 96:S104.

Bounds, R.S., and Hausbeck, M.K.  2006.  Combining disease control tactics and the utility of registered fungicides when applied according to disease predictors for managing late blight of celery.  Phytopathology 96:S173.

Gevens, A.J., Lamour, K.H., and Hausbeck, M.K.  2006.  Monitoring surface irrigation water for Phytophthora capsici.  Phytopathology 96:S173.

Gevens, A., and Hausbeck, M.  2005.  Screening cucumber germplasm for resistance to Phytophthora capsici using a detached fruit method.  Phytopathology 95:S34.

Hill, S., Hausbeck, M., Woodworth, J., and Harlan, B.  2005.  Detection of Phytophthora cactorum on ginseng seed and screening pathogen isolates for resistance to mefenoxam.  Phytopathology 95:S42.

Saude, C., Hausbeck, M., Hurtado-Gonzales, O., and Lamour, K.  2005.  Characterization of Phytophthora spp. pathogenic to asparagus in Michigan.  Phytopathology 95:S92.

Bounds, R.S., and Hausbeck, M.K.  2005.  Evaluation of disease predictors and scheduling the first fungicide spray for managing late blight of celery.  Phytopathology 95:S161.

Gevens, A.J., and Hausbeck, M.K.  2005.  Phytophthora capsici isolated from snap beans is pathogenic to cucumber fruit and soybean. Phytopathology 95:S162.

Hill, S.N., and Hausbeck, M.K.  2005.  Characterization of Phytophthora cactorum isolated from American ginseng.   Phytopathology 95:S163.

Byrne, J.M., Hausbeck, M.K., and Sconyers, L.E.  2004.  Influence of environment on atmospheric concentrations of Peronospora antirrhini conidia in field-grown snapdragons.  Phytopathology 94:S13.

Bounds, R.S., and Hausbeck, M.K.  2004.  Incorporating disease scouting and Tom-Cast into a foliar blight management program for carrots.  Phytopathology 94:S156.

Gevens, A.J., and Hausbeck, M.K.  2004.  Characterization and distribution of Phytophthora capsici from irrigation water near Michigan cucurbit fields. A first report of Phytophthora capsici in irrigation water in Michigan.  Phytopathology 94:S157.

Hill, S., Lamour, K., and Hausbeck, M.K.  2004.  Mating type and mefenoxam sensitivity of overwintering Phytophthora capsici.  Phytopathology 94:S158.

Tuell, J.K., Hausbeck, M.K., and Bishop, B.  2004.  Characterization of Ophiomyia simplex L. activity in commercial asparagus fields and its association with Fusarium crown and root rot.  Phytopathology 94:S161-S162.

Ngouajio, M, Hausbeck, M.K., Sullen, D.M., Selvarag, M., and Charles, K.  2004.  The effects of plant populations on pickling cucumber canopy dynamics and yield.  HortScience 39:871.

Lamour, K.H., Daughtrey, M.L., Benson, D.M., Hwang, J., and Hausbeck, M.K.  2003.  Etiology of Phytophthora drechsleri and P. nicotianae (=P. parasitica) diseases affecting floriculture crops.  Phytopathology 93:S118.

Dorman, E.A., and Hausbeck, M.K.  2003.  Using a reduced risk fungicide, copper and a disease forecaster to manage foliar blights on carrots.  Phytopathology 93:S22.

Hines, R., DiFonzo, C.D., Cortright, B., and Hausbeck, M.  2002.  Aphids as virus vectors in Michigan vine crops.  Entomological Society of America Annual Meeting and Exhibition, Fort Lauderdale, FL, 14-20 Nov.  Abstr. D0439.

Zhou, L., Grafius, E., Bishop, B., Pett, W., and Hausbeck, M.  2002.  Evaluation of the carrot’s resistance to aster yellows and the efficacy of insecticides to aster leafhoppers.  Entomological Society of America Annual Meeting and Exhibition, Fort Lauderdale, FL, 14-20 Nov.  Abstr. D0190.

Carroll, N.B., Coble, H.D., Gianessi, L.P., Hausbeck, M.K., Lewis, P.I., Rossi, L.A., and Thompson, D.C.  2002.  Panel discussion: The Food Quality Protection Act (FQPA): Expected impact on agriculture and the consumer.   Phytopathology 92:S112.

Lamour, K.H., and Hausbeck, M.K.  2002.  The spatiotemporal genetic structure of Phytophthora capsici in Michigan and implications for control.  Phytopathology 92:S139.

Lamour, K.H., and Hausbeck, M.K.  2001.  The spatiotemporal genetic structure of Phytophthora capsici in Michigan and implications for disease management.  Phytopathology 91:S166.

Lamour, K.H., and Hausbeck, M.K.  2001.  The dynamics of mefenoxam insensitivity in a recombining population of Phytophthora capsici characterized with AFLP markers.  Phytopathology 91:S195.

Medina-Mora, C.M., Hausbeck, M.K., and Fulbright, D.W.  2000.  Rep-PCR analysis of Clavibacter michiganensis subsp. michiganensis from peppers.  Phytopathology 90:S51.

Byrne, J.M., and Hausbeck, M.K.  1999.  The effect of temperature on sporulation of Oidium sp. on poinsettia foliage.  Phytopathology 89:S10.

Lamour, K.H., and Hausbeck, M.K.  1999.  Characterization of Phytophthora capsici populations in Michigan.  Phytopathology 89:S43.

Medina-Mora, C.M., Werner, N., Bell, J., Hausbeck, M., de Bruijn, F.J., and Fulbright, D.W.  1999.  Genomic variation in Clavibacter michiganensis subsp. michiganensis provides a new understanding of bacterial canker of tomato.  Phytopathology 89:S52.

Reid, T.C., and Hausbeck, M.K.  1999.  Control of Fusarium root rot of asparagus with different forms of chloride salt.  Phytopathology 89:S65.

Byrne, J.M., and Hausbeck, M.K.  1999.  Management of powdery mildew (Oidium sp.) on poinsettia.  Phytopathology 89:S99.

Medina-Mora, C.M., Bell, J., Hausbeck, M.K., and Fulbright, D.W.  1999.  Fruit spot development caused by Clavibacter michiganensis subspecies michiganensis on processing tomatoes.  Phytopathology 89:S100.

Werner, N.A., Hausbeck, M.K., and D.W. Fulbright.  1999.  Utilization of rep-polymerase chain reaction in characterizing populations of Clavibacter michiganensis subsp. michiganensis in commercial tomato fields in Michigan.  Phytopathology 89:S103.

Daughtrey, M., Byrne, J.M., and Hausbeck, M.K.  1999.  Management of a new powdery mildew on poinsettia. The First International Powdery Mildew Conference, Aug. 29 – Sept. 3, Avignon, France.

Byrne, J.M., and Hausbeck, M.K.  1998.  Influence of temperature and relative humidity on infection processes and sporulation of Oidium sp. on poinsettia foliage.  Phytopathology 88:S134.

Fulbright, D.W., Bell, J., Medina-Mora, C.M., and Hausbeck, M.K.  1998.  Genotypic and phenotypic variation in field isolates of Clavibacter michiganensis subsp. michiganensis.  7th International Congress of Plant Pathology, 9-16 August, Edinburgh, Scotland, abstract no. 2.2.91.

Celio, G.J., and Hausbeck, M.K.  1997.  Early colony development of powdery mildew on poinsettia.  Phytopathology 87:516.

Byrne, J.M., and Hausbeck, M.K.  1996.  Epidemiology of Colletotrichum coccodes on tomato foliage.  Phytopathology 86:53.

Pritchard, P.M., Hausbeck, M.K., and Heins, R.D.  1995.  Influence of day/night temperatures on the susceptibility of poinsettias to Botrytis cinerea.  Phytopathology 85:1171.

Shaw, B., and Hausbeck, M.K.  1995.  Epidemiology of powdery mildew in poinsettia.  Phytopathology 85:1170.

Merrick, J.A., and Hausbeck, M.K.  1995.  Benefits assessment of the use of fungicides to control fruit rot in tomatoes.  Phytopathology 85:1120.

Hausbeck, M.K., Fulbright, D., Louws, F., Bell, J., and de Bruijn, F.  1995.  Bacterial canker among tomato transplants in the greenhouse and impact on yield.  Phytopathology 85:1119.

Celio, G.J., and Hausbeck, M.K.  1994.  Susceptibility of poinsettia cultivars to Oidium sp.  Phytopathology 84:1158.

Hausbeck, M.K., and Kalishek, J.  1994.  Influence of temperature and relative humidity on germination of conidia of Oidium sp. on poinsettia.  Phytopathology 84:1085.

Hausbeck, M.K.  1993.  Epidemiology of Stemphylium leaf spot and purple spot in no-till asparagus.  Phytopathology 83:1344.

Hausbeck, M.K., and Linderman, S.D.  1992.  Influence of dew period and temperature on infection of tomato foliage by Colletotrichum coccodes.  Phytopathology 82:1091.

Louws, F.J., Hausbeck, M.K., and Stephens, C.T.  1991.  Minimum use of fungicides for control of foliar fungal pathogens of tomato.  Phytopathology 81:1200-1201.

Hausbeck, M.K., Pennypacker, S.P., and Stevenson, R.E.  1991.  The effect of modifying the environment in greenhouses containing geranium stock plants on sporulation of Botrytis cinerea and Botrytis blight.  Phytopathology 81:1176.

Hausbeck, M.K., and Pennypacker, S.P.  1989.  Disease incidence and Botrytis cinerea conidial concentration among geranium stock plants.  Phytopathology 79:1149.

Hausbeck, M.K., and Pennypacker, S.P.  1988.  Botrytis cinerea conidial concentration within a geranium propagation greenhouse.  Phytopathology 78:1520.

Hausbeck, M.K., and Pennypacker, S.P.  1988.  Variation in resistance of cutting-propagated geraniums to leaf blight caused by Botrytis cinerea.  Phytopathology 78:1508.

Hausbeck, M.K., and Pennypacker, S.P.  1987.  Effects of grower activity and environmental modification on Botrytis cinerea conidial concentration in greenhouses.  Phytopathology 77:1733.

Hausbeck, M.K., Pennypacker, S.P., and Stevenson, R.E.  1986.  Botrytis cinerea spore concentration among geranium stock plants in the greenhouse.  Phytopathology 76:1071-1072.

Hausbeck, M.K., Stephens, C.T., and Heins, R.D.  1985.  Variation in sensitivity to Pythium ultimum in selected seed-propagated hybrid geraniums (Pelargonium x hortorum).  HortScience 75:1305-1306.

Hausbeck, M.K., Stephens, C.T., and Heins, R.D.  1984.  Increased Pythium ultimum mortality on ‘Ringo Scarlet’ geraniums treated with silver thiosulphate.  Phytopathology 74:882-883.

Hausbeck, M.K., Stephens, C.T., and Heins, R.D.  1984.  Increased Pythium ultimum induced mortality on geranium by application of silver thiosulphate.  HortScience 19:570.