Publications (Clicking on the reprint icon will take you to the publication reprint.)

Nutrient disorder symptomology and foliar concentrations of Clerodendrum thomsoniae     - (Peer Reviewed Journal)

Davis, K., Niedziela, C.E., Reddy, M.R., Whipker, B.E., Frantz, J. 2011. Nutrient disorder symptomology and foliar concentrations of Clerodendrum thomsoniae. Journal of Plant Nutrition. 34:1079-1086.

Phosphorus Deficiency in Pelargonium: Effects on Nitrate and Ammonium Uptake and Acidity Generation     - (Peer Reviewed Journal)

Taylor, M., Nelson, P., Frantz, J., Rufty, T. 2010. Phosphorus Deficiency in Pelargonium: Effects on Nitrate and Ammonium Uptake and Acidity Generation. Journal of Plant Nutrition. 33:701-712.

Effects of Sprayer Configuration of Efficacy for the Control of Scab on Crabapple Using Electron Beam Analysis     - (Peer Reviewed Journal)

Krause, C.R., Derksen, R.C., Horst, L., Zhu, H., Zondag, R. 2009. Effects of Sprayer Configuration of Efficacy for the Control of Scab on Crabapple Using Electron Beam Analysis. Scanning. 31:24-27.

Photosynthesis is an Early Target of Boron Deficiency in Geranium     - (Peer Reviewed Journal)

Mishra, S., Heckathorn, S., Frantz, J., Yu, F., Gray, J. 2009. Photosynthesis is an Early Target of Boron Deficiency in Geranium. American Society of Horticulture Science Meeting. 134:183-193.

Verticillium dahliae Causes Wilt on Sugar Beet Following Potato in Eastern North Dakota     - (Peer Reviewed Journal)

Brantner, J., Windels, C., Omer, M.A. 2008. Verticillium dahliae Causes Wilt on Sugar Beet Following Potato in Eastern North Dakota. Plant Health Progress. DOI: 10.1094/PHP-2008-1212-01-BR.

The influence of phosphorus concentration on the development of Pythium root rot disease of seedling geranium - (Abstract Only)

Omer, M.A., Locke, J.C., Frantz, J., Krause, C.R. 2008. The influence of phosphorus concentration on the development of Pythium root rot disease of seedling geranium. Phytopathology. 98(6):S116.

Leaf spot on Tigergrass caused by Exserohilum rostratum in Florida - (Abstract Only)

Brunings, A., Datnoff, L., Palmateer, A., Locke, J.C., Frantz, J., Krause, C.R. 2008. Leaf spot on Tigergrass caused by Exserohilum rostratum in Florida. Phytopathology. 98(6):S27.

Potential for the use of silicon to alleviate disease stresses in floricultural crop production - (Abstract Only)

Locke, J.C., Omer, M.A., Frantz, J., Widrig, A.K., Zellner, W.L., Leisner, S.M., Krause, C.R. 2008. Potential for the use of silicon to alleviate disease stresses in floricultural crop production. Phytopathology. 98(6):S93-94.

Evaluating fibrous polyethylene terephthalate (PET) and cellulose as components for soilless substrates - (Abstract Only)

Pasian, C., Frantz, J. 2008. Evaluating fibrous polyethylene terephthalate (PET) and cellulose as components for soilless substrates. HortScience. vol 43:1182

Substrate Acidification by Geranium (Pelargonium x Hortorum) I: Temperature Effects     - (Peer Reviewed Journal)

Taylor, M., Nelson, P., Frantz, J. 2008. Substrate Acidification by Geranium (Pelargonium x Hortorum) I: Temperature Effects. Journal of the American Society for Horticultural Science. 133:508-514.

Substrate Acidification by Geranium (Pelargonium x Hortorum) II: Light Effects and Phosphorus Uptake     - (Peer Reviewed Journal)

Taylor, M., Nelson, P., Frantz, J. 2008. Substrate Acidification by Geranium (Pelargonium x hortorum) II: Light Effects and Phosphorus Uptake. Journal of the American Society for Horticultural Science. 133:515-520.

Virtual Grower Software Helps in Greenhouse Management - (Popular Publication)

Frantz, J. 2008. Virtual Grower Software Helps in Greenhouse Management. University of Toledo, Urban Affairs Center (UTUAC). Spring 08:4-5

Virtual Grower 2.0 - (Other)

Frantz, J., Hand, B.A., Runkle, E., Blanchard, M. 2008. Virtual Grower 2.0. CD ROM. [computer program] http://www.ars.usda.gov/services/software/download.htm?softwareid=108

Detection, quantification and vegetative compatibility of Verticillium dahliae in potato and mint production soils in the Columbia Basin of Oregon and Washington - (Peer Reviewed Journal)

Omer, M.A., Johnson, D.A., Douhan, L.I., Hamm, P.B., Rowe, R.C. 2008. Detection, quantification and vegetative compatibility of Verticillium dahliae in potato and mint production soils in the Columbia Basin of Oregon and Washington. Plant Disease. 92:1127-1131.

Current, Short Term, Future and Star Wars Research Projects for Ornamental Crops - (Proceedings)

Conference Proceedings: 24th Annual Conference on Pest and Diseas Management in Ornamentals. 72-79

Response to Temperature and Light     - (Trade Journal)

Blanchard, M., Runkle, E., Frantz, J. 2008. Response to Temperature and Light. Greenhouse Grower Magazine.

Current projects of the Application Technology Research Unit - (Abstract Only)

Krause, C.R., Altland, J.E., Derksen, R.C., Frantz, J., Locke, J.C., Ranger, C.M., Reding, M.E., Zhu, H. 2007. Current projects of the Application Technology Research Unit. OFA Bulletin. No.904:24-25.

Detection and Quantification of Silicon in Floricultural Crops Utilizing Three Distinct Analytical Methods     - (Peer Reviewed Journal)

Frantz, J., Locke, J.C., Datnoff, L., Omer, M.A., Widrig, A.K., Sturtz, D.S., Horst, L., Krause, C.R. 2008. Detection and Quantification of Silicon in Floricultural Crops Utilizing Three Distinct Analytical Methods. Communications in Soil Science and Plant Analysis. 39:2734-2751.

Using Leaf Temperature to Detect Pythium Root Rot Stress in Geranium     - (Peer Reviewed Journal)

Omer, M.A., Locke, J.C., Frantz, J. 2007. Using Leaf Temperature to Detect Pythium Root Rot Stress in Geranium. HortTechnology. 17:532-536.

Effect of High Temperature on Extreme Substrate Acidification by Geranium - (Proceedings)

Taylor, M., Nelson, P., Frantz, J. 2007. Effect of High Temperature on Extreme Substrate Acidification by Geranium. Southern Nursery Association Proceedings, Atlanta, GA, August 9-11, 2007.

Considerations for Accurate Whole Plant Photosynthesis Measurement - (Peer Reviewed Journal)

Takahashi, N., Ling, P., Frantz, J. 2007. Considerations for Accurate Whole Plant Photosynthesis Measurement. Environmental Control in Biology. 46:71-81.

System Approach for Improved Whole Canopy Photosynthesis Measurement - (Proceedings)

Takahashi, N., Ling, P., Klingman, M., Frantz, J. 2007. System Approach for Improved Whole Canopy Photosynthesis Measurement. Meeting Proceedings. Japanese Society of Agricultural, Biological, and Environmental Engineers and Scientists 2007 Conference, June 25-27, Sakai, Osaka, Japan.

April showers bring May flowers…and May rains bring botrytis     - (Other)

Locke, J.C. 2007. April showers bring May flowers…and May rains bring Botrytis. Digital Newsletter for the floriculture industry. Year II. Issue 1. pp. 4-7.

Bedding Plant Plugs suffering from “Stubby Plant Syndrome” - (Abstract Only)

Krug, B., Whipker, B., Frantz, J., Mccall, I. 2007. Bedding Plant Plugs suffering from “Stubby Plant Syndrome”. HortScience. American Society for Horticultural Science, Scottsdale, AZ, July 16-20, 2007.

Effect of High Temperature on Extreme Substrate Acidification by Geranium (Pelargonium x hortorum Bailey) - (Abstract Only)

Taylor, M., Nelson, P., Frantz, J. 2007. Effect of High Temperature on Extreme Substrate Acidification by Geranium (Pelargonium x hortorum Bailey). American Society for Horticultural Science, July 16-19, 2007, Scottsdale, AZ. 42:874.

Effect of Phosphorus Deficiency and High Temperature on Ammonium and Nitrate Uptake by Geranium (Pelargonium x hortorum Bailey) - (Abstract Only)

Taylor, M., Nelson, P., Frantz, J., Rufty, T. 2007. Effect of Phosphorus Deficiency and High Temperature on Ammonium and Nitrate Uptake by Geranium (Pelargonium x hortorum Bailey). HortScience Annual Meeting July 16-19, 2007, Scottsdale, AS. 42:890.

Virtual Grower: Estimating Greenhouse Energy Costs and Plant Growth Using New Computer Software - (Abstract Only)

Frantz, J., Runkle, E., Blanchard, M., Locke, J.C., Krause, C.R. 2007. Virtual Grower: Estimating Greenhouse Energy Costs and Plant Growth Using New Computer Software. HortScience Annual Meeting, July 16-19, 2007 in Scottsdale, AZ. 42:1018.

Target Region Amplification Polymorphism (TRAP) as a Tool for Detecting Genetic Variation in the Genus Pelargonium     - (Peer Reviewed Journal)

Palumbo, R., Hong, Q., Craig, R., Locke, J.C., Krause, C.R., Tay, D., Wang, G. 2007. Target Region Amplification Polymorphism (TRAP) as a Tool for Detecting Genetic Variation in the Genus Pelargonium. HortScience. 42(5):1118-1123.

Controlled Release Fertilizers: An Environmentally Sound and Efficient Method for Greenhouse Crop Fertilization - (Abstract Only)

Frantz, J., Pasian, C. 2007. Controlled Release Fertilizers: An Environmentally Sound and Efficient Method for Greenhouse Crop Fertilization. Ohio State University Extension Publication. 3:1. p. 5-7.

Improving Growth of Calibrachoa x Hybrida (Cerv.) in Hanging Pouches     - (Peer Reviewed Journal)

Frantz, J., Locke, J.C., Pitchay, D. 2007. Improving Growth of Calibrachoa x Hybrida (Cerv.) in Hanging Pouches. HortTechnology. 17:151-272.

How Does Geranium (Pelargonium) Respond To Specific Nutrient Deficiencies? A Visual Primer For Grower Diagnosis And Correction - (Other)

Pitchey, D., Frantz, J., Locke, J.C., Krause, C.R. 2007. How Does Geranium (Pelargonium) Respond To Specific Nutrient Deficiencies? A Visual Primer For Grower Diagnosis And Correction. Government Publication/Report. 894:1. p. 9-15.

Impact of Applied Nitrogen Concentration on Growth of Elatior Begonia and New Guinea Impatiens, and Susceptibility of Begonia to Botrytis cinerea     - (Peer Reviewed Journal)

Pitchay, D., Frantz, J., Locke, J.C., Krause, C.R., Fernandez, G. 2007. Impact of Applied Nitrogen Concentration on Growth of Elatior Begonia and New Guinea Impatiens, and Susceptibility of Begonia to Botrytis cinerea. Journal of the American Society for Horticultural Science. 132:193-201.

VIRUAL GROWER MANUAL VERSION 1.1     - (Other)

Frantz, J., Krause, C.R., Locke, J.C., Ghose, S., Smiser, R., Buckingham, L.A. Virual grower manual version 1.1. Available: http://www.ars.usda.gov/SP2UserFiles/Place/36071000/Publications/ManualforVirtualGrower1.1.pdf

Boron Stress and Boron Tissue Distribution in Arbidopsis thaliana and Pelargonium X Hortorum - (Abstract Only)

Yu, F., Pitchey, D., Frantz, J., Heckathorn, S., Gray, J. 2006. Boron Stress and Boron Tissue Distribution in Arbidopsis thaliana and Pelargonium X Hortorum. American Society for Plant Biology, Boston, MA. p. 159.

Biomonitoring of Boron Micronutrient Stress in Arbidopsis thaliana and Pelargonium X Hortorum - (Abstract Only)

Deng, Y., Yu, F., Chen Mei, Pitchay, D., Frantz, J., Heckathorn, S., Gray, J. 2006. Biomonitoring of Boron Micronutrient Stress in Arbidopsis thaliana and Pelargonium X Hortorum. Midwest American Society of Plant Biologists, Chicago, IL, Maarch 24-25, 2006. Abstract #38.

DELAY OF EXPRESSION OF POWDERY MILDEW ON ZINNIA GROWN HYDROPONICALLY IN HOAGLAND'S SOLUTION FORTIFIED WITH SILICON     - (Abstract Only)

Locke, J.C., Omer, M.A., Widrig, A.K., Krause, C.R. 2006. Delay of expression of powdery mildew on zinnia grown hydroponically in Hoagland's solution fortified with silicon [abstract]. Phytopathology. 96(6):S70.

DELAY OF EXPRESSION OF POWDERY MILDEW ON ZINNIA GROWN HYDROPONICALLY IN HOAGLAND'S SOLUTION FORTIFIED WITH SILICON - (Abstract Only)

Locke, J.C., Omer, M.A., Widrig, A.K., Krause, C.R. 2006. Delay of expression of powdery mildew on zinnia grown hydroponically in Hoagland's solution fortified with silicon [abstract]. Phytopathology. 96(6):S70.

USE OF LEAF TEMPERATURE TO ASSESS THE RESPONSE OF GERANIUM PLANTS FOLLOWING EXPOSURE TO SOIL PATHOGENS     - (Abstract Only)

Omer, M.A., Frantz, J., Locke, J.C., Krause, C.R. 2006. Use of leaf temperature to assess the response of geranium plants following exposure to soil pathogens. Phytopathology. 96:S87.

IN THE GREENHOUSE...AN UPDATE ON USDA RESEARCH PROJECTS AT TBG     - (Popular Publication)

Locke, J.C. 2006. In the greenhouse...an update on USDA research projects at TBG. Toledo Botanical Garden Cultivation. 5(2):7.

NEW, INNOVATIVE RESEARCH IN PESTICIDE APPLICATION TECHNOLOGIES - (Proceedings)

Krause, C.R., Zhu, H., Derksen, R.C., Reding, M.E., Zondag, R.A., Frantz, J., Locke, J.C. 2006. New, innovative research in pesticide application technologies. International Crop Protection Compendium.

Suppression of Botrytis Gray Mold in Hiemalis Begonia with Potting Mix Amendments     - (Other)

Locke, J.C., Horst, L., Krause, C.R. 2005. Suppression of Botrytis Gray Mold in Hiemalis Begonia with Potting Mix Amendments. Resource. 1(1):6-7.