Richard C Derksen
(Rich)
Application Technology Research Unit
Agricultural Engineer
Phone: (330) 263-3869
Fax: (330) 263-3953
Room 203 1680 MADISON AVE
WOOSTER, OH, 44691
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.
Derksen, R.C. 2008. Application Technology Research for Asian Soybean Rust Management. Plant Management Network. Available at: http://www.plantmanagementnetwork.org/edcenter/seminars/ApplicationTechnology.
Reding, M.E., Zhu, H., Derksen, R.C. 2008. Drip-Chemigation with Imidacloprid and Nematodes for Control of Scarab Larvae in Nursery Crops. Journal of Environmental Horticulture. 26:93-100.
Derksen, R.C., Zhu, H., Ozkan, E., Hannond, R., Dorrance, A. Determining the influence of spray quality, nozzle type, spray volume, and air-assisted application strategies on deposition of pesticides in soybean canopy. Transactions of the ASABE. 51(5): 1529-1537
Zhu, H., Yu, Y., Ozkan, E.H., Derksen, R.C., Krause, C.R. 2008. Influence of spray additives on droplet evaporation and residual patterns on wax and wax-free surfaces. ASABE Annual International Meeting. Paper #083752.
Miller, S., Vitanza, S., Bennett, M., Derksen, R.C., Welty, C. 2007. Spacing Studies in Peppers. Meeting Proceedings. Great Lakes Fruit, Vegetable and Farm Market Expo, December 5-7, Grand Rapids, MI [Abstract]. p. 3.
Fox, R.D., Derksen, R.C., Zhu, H., Brazee, R.D., Svensson, S.A. 2008. A history of air-blast sprayer development and future prospects. Transactions of the ASABE. 51(2):405-410.
Derksen, R.C., Vitanza, S., Welty, C., Miller, S., Bennett, M., Zhu, H. 2007. Field Evaluation of Application Variables and Plant Spacing for Bell Pepper Pest Management. Transactions of the ASABE. 50(6):1945:1953.
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.
Derksen, R.C., Zhu, H., Fox, R.D., Brazee, R.D., Krause, C.R. 2007. Coverage and drift produced by air induction and conventional hydraulic nozzles used for orchard applications. Transactions of the ASABE. 50(5):1493-1501.
Derksen, R.C., Frantz, J., Ranger, C.M., Locke, J.C., Zhu, H., Krause, C.R. 2007. The effect of spray volume and quality on handgun delivery of pesticides to greenhouse plants. Proceedings of the American Society of Agricultural and Biological Engineers International (ASABE). Paper No. 071149.
Guler, H., Zhu, H., Ozkan, H.E., Derksen, R.C., Yu, Y., Krause, C.R. 2007. Spray characteristics and drift reduction potential with air induction and conventional flat fan nozzles. Transactions of the ASABE. 50(3):745-754.
Fife, J.P., Ozkan, H.E., Derksen, R.C., Grewal, P.S. 2007. Effects of pumping on entomopathogenic nematodes and temperature increase within a spray system. Applied Engineering in Agriculture. 23(4):406-412.
Zhu, H., Yu, Y., Derksen, R.C., Ozkan, H.E., Krause, C.R. 2007. Wide-swath Spray Application in Ornamental Nurseries with Cannon Air Jet Sprayer. Proceedings of the American Society of Agricultural and Biological Engineers International (ASABE), June 17-21, 2007, Minneapolis, MN. Paper No. 071069.
Derksen, R.C., Ozkan, H.E., Zhu, H., Dorrance, A. 2006. Nozzle and Equipment Considerations for Improved Coverage in the Soybean Canopy: A Summary of the Work Done in Ohio. National Soybean Rust Symposium.
Zhu, H., Brazee, R.D., Derksen, R.C., Fox, R.D., Krause, C.R., Ozkan, H.E., Losely, K.E. 2006. A specially designed air-assist sprayer to improve spray penetration and air jet velocity distribution inside dense nursery crops. Transactions of the ASABE. 49(5):1285-1294.
Hansen, R.C., Christman, J.C., Derksen, R.C. 2006. Statistical evaluation of instruments designed to measure volumetric water content of soilless container media. Applied Engineering in Agriculture. 22(5):753-763.
Guler, H., Zhu, H., Ozkan, H.E., Derksen, R.C., Yu, Y., Krause, C.R. 2006. Spray characteristics and wind tunnel evaluation of drift reduction potential with air induction and conventional flat fan nozzle [Abstract]. American Society Agricultural Biological Engineers, Annual International Meeting. Paper No. 06111.
Zhu, H., Derksen, R.C., Guler, H., Krause, C.R., Ozkan, H.E. 2006. Foliar deposition and off-target loss with different spray techniques in nursery application. Transactions of the ASAE. 49(2): p.325-334.
Guler, H., Zhu, H., Ozkan, H.E., Derksen, R.C., Krause, C.R. 2006. Wind tunnel evaluation of drift reduction potential and spray characteristics with drift retardants at high operating pressure. American Society for Testing and Materials. 3(5):1-9.
Derksen, R.C., Krause, C.R., Fox, R.D., Brazee, R.D., Zondag, R. 2006. The effect of application variables on spray retention, coverage, and ground losses in nursery tree applications. Journal of Environmental Horticulture. 24(1):45-52.
Vitanza, S., Welty, C., Derksen, R.C., Bennett, M., Miller, S. 2006. Effect of plant stand density and pesticide application technology on insect pests and diseases of bell peppers [Abstract]. In: Proceedings of the 5th National IPM Symposium, April 4-6, 2006, St. Louis, MO.
Ozkan, H.E., Zhu, H., Derksen, R.C. 2006. Evaluation of spraying equipment for effective deposition and coverage to control asian soybean rust. ASABE Annual International Meeting, July 9-12, 2006, Portland, OR.
Zhu, H., Derksen, R.C., Guler, H., Krause, C.R., Ozkan, H.E. 2006. Investigation of nursery canopy and ground deposition with three spray techniques. In: Aspects of Applied Biology 77. International Advances in Pesticide Applications 2006, January 8-13, 2006, Robinson College, Cambridge, UK. p. 49-495.
Ozkan, H.E., Zhu, H., Derksen, R.C., Guler, H., Krause, C.R. 2006. Evaluation of various spraying equipment for effective application of fungicides to control Asian Soybean Rust. Aspects of Applied Biology 77. International Advances in Pesticide Applications 2006, Robinson College, Cambridge, UK, January 8-13, 2006. p. 423-431.
Reding, M.E., Zhu, H., Derksen, R.C. 2005. Drip irrigation as a delivery system for imidacloprid and nematodes for control of scarab grubs in nursery crops [Abstract]. Presented at Natinal Meeting of the Entomological Society of America, December 14-18, 2005, Ft. Lauderdale, FL.
Fife, J.P., Ozkan, H.E., Derksen, R.C., Grewal, P.S. 2006. Using computational fluid dynamics to predict damage of a biological pesticide during passage through a hydraulic nozzle. Biosystems Engineering. 94(3):387-396.
Derksen, R.C., Zhu, H., Ozkan, H.E., Dorrance, A.E., Krause, C.R. 2006. Effects of air-assisted and conventional spray delivery systems on management of soybean diseases. Aspects of Applied Biology 77. International Advances in Pesticide Applications 2006, Robinson College, Cambridge, UK. p. 415-422.
Zhu, H., Guler, H., Derksen, R.C., Ozkan, H.E. 2005. Comparison of airborne and ground spray deposits with hollow cone nozzle, low drift nozzle and drift retardant. In: Proceedings of the 9th International Congress on Mechanization and Energy in Agriculture and 27th International Conference of CIGR, September 27-29, 2005, Izmir-Turkdy. p. 73-78.
Zhu, H., Derksen, R.C., Krause, C.R., Brazee, R.D., Zondag, R., Fox, R.D., Reding, M.E., Ozkan, E.H. 2005. Spray deposition and off-target loss in nursery tree crops with conventional nozzle, air induction nozzle and drift retardant. ASAE Annual International Meeting, July 17-22, 2005, Tampa, Florida. Paper # 051007.
Derksen, R.C., Muzzi, D. 2005. Hit the bull's eye: know pest, plant canopy, and pesticide to boost sprayer efficiency in vegetables. The Grower Magazine. p.22-24.
Zhu, H., Krause, C.R., Zondag, R.H., Brazee, R.D., Derksen, R.C., Reding, M.E., Fausey, N.R. 2005. A new system to monitor water and nutrient use efficiency in pot-in-pot nursery production system. Journal of Environmental Horticulture. 23(1):47-53.
Ramalingam, N., Ling, P.P., Derksen, R.C. 2005. Background reflectance compensation and its effect on multispectral leaf surface moisture assessment. Transactions of the ASAE. 48(1):375-383.
Zhu, H., Zondag, R.H., Krause, C.R., Derksen, R.C., Demaline, T. 2005. Preliminary investigation of water and nutrient use, substrate temperature and moisture in pot-in-pot production. Extension Circular 195. pp. 135-144.
Zhu, H., Derksen, R.C., Krause, C.R., Fox, R.D., Brazee, R.D., Ozkan, E.H. 2005. Fluorescent intensity of solutions containing fluorescent substances under different ph conditions. American Society for Testing and Materials. 2(6):1-7.
Fife, J.P., Ozkan, H.E., Derksen, R.C., Grewal, P.S., Krause, C.R. 2005. Viability of a biological pest control agent through hydraulic nozzles. Transactions of the ASAE. 48(1):45-54.
Derksen, R.C., Zhu, H., Krause, C.R., Ozkan, H.E., Fox, R.D., Brazee, R.D. 2004. Research to reduce potential damage from spray drift loss by the USDA-ARS Application Technology Research Unit. Proceedings of International Drift on Pesticide Application for Drift Management Meeting, October 27-29, 2005. Waikoloa, Hawaii. p. 414-421.
Zhu, H., Fox, R.D., Ozkan, H.E., Derksen, R.C., Krause, C.R. 2004. An application computer program (DRIFTSIM) to predict drift distances of water droplets from field sprayers. In: Ramsay, C., Hewitt, A. , Thistle, H., Hoffman, C., Wold, R., Wolf, T. (editors) Proceedings of International Conference on Pesticide Application for Drift Management. October 27-29, 2004. Waikoloa, Hawaii. p. 317-323.
Derksen, R.C., Gordon, R. 2004. Shopping for sprayers: take spraying capacity and intended use into consideration when purchasing a sprayer. American Vegetable Grower. 52(5):14-15.
Zhu, H., Derksen, R.C., Fox, R.D., Brazee, R.D., Fox, R.D., Ozkan, H.E. 2004. Spray deposition in taxus and air velocity profile for a five-port, air-assist sprayer. ASAE Annual International Meeting. Paper No. 041032.
Zhu, H., Krause, C.R., Derksen, R.C., Zondag, R.H., Brazee, R.D., Fausey, N.R. 2004. New techniques for monitoring drip irrigation water use efficiency, drainage, and leachate in containers. ASAE Annual International Meeting. Paper No. 042247.
Derksen, R.C., Krause, C.R., Fox, R.D., Brazee, R.D., Zondag, R. 2004. Spray delivery by air curtain and axial fan orchard sprayers to nursery trees. Journal of Environmental Horticulture. 22(1):17-22.
Krause, C.R., Zhu, H., Derksen, R.C., Brazee, R.D., Fox, R.D., Horst, L., Zondag, R.H. 2004. Detection and quantification of nursery spray penetration and off-target loss with electron bean and conductivity analysis. Transactions of the ASAE. 47(2): 375-384.
Ebert, T.A., Derksen, R.C. 2004. A geometric model of mortality and crop protection for insects feeding on discrete taxicant deposits. Journal of Economic Entomology. 97(2):155-162.
Brazee, R.D., Williams, K.A., Lohnes, D., Derksen, R.C., Zhu, H., Zondag, R., Krause, C.R. 2004. The USDA, Agricultural Research Service research weather station network in northern Ohio nurseries. Extension Publications. 193:190-193.
Krause, C.R., Zhu, H., Zondag, R., Shipitalo, M.J., Williams, K.A., Brazee, R.D., Derksen, R.C., Reding, M.E., Demaline, T. 2004. Determination of water quality, water use efficiency and water runoff in pot-in-pot nurseries. Extension Publications. 193:78-83.
Fife, J.P., Derksen, R.C., Ozkan, H.E., Grewal, P.S., Chalmers, J.J., Krause, C.R. 2004. Evaluation of a contraction flow field on hydrodynamic damage to entomopathogenic nematodes - a biological pest control agent. Biotechnology and Bioengineering. 86(1):96-107.
Fife, J.P., Derksen, R.C., Ozkan, H.E. 2003. Effect of hydraulic nozzles on the viability of a biological pest control agent. ASAE Annual International Meeting. Paper No. 031063.
Ramalingam, R., Ling, P.P., Derksen, R.C. 2003. Leaf surface wetness detection using ground based multispectral imaging. ASAE Annual International Meeting. Paper No. 033130.
Brazee, R.D., Derksen, R.C., Krause, C.R., Williams, K.A., Lohnes, D., Klein, M.G., Reding, M.E., Lyons, R., Hendricks, W., Zondag, R. 2004. The usda/agricultural research service research weather network in lake county, ohio - 2002 update. Extension Circular. 189:145-148.
Krause, C.R., Derksen, R.C., Horst, L., Zondag, R., Brazee, R.D., Klein, M.G., Reding, M.E. 2003. The effects of sprayer configuration on efficacy for the control of scab on crabapple. Extension Circular. 189:65-68
Fife, J.P., Derksen, R.C., Ozkan, H.E., Grewal, P.S. 2003. Effects of pressure differentials on the viability and infectivity of entomopathogenic nematodes. Biological Control. 27:65-71.
Fife, J.P., Derksen, R.C., Ozkan, H.E. 2002. Effect of constricted flow on the viability of a biological pest control agent. ASAE Annual International Meeting. Paper No. 021025.