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

Influence of pumice and plant roots on substrate physical properties over time     - (Peer Reviewed Journal)

Altland, J.E. 2011. Influence of pumice and plant roots on substrate physical properties over time. HortTechnology. 21:554-557.

The effects of spray application rate and droplet size on applications to control soybean rust     - (Proceedings)

Bretthauer, S.M., Mueller, T.A., Bode, L.E., Derksen, R.C., Zhu, H. The effects of spray application rate and droplet size on applications to control soybean rust. Presented at the 2008 American Society of Agricultural and Biological Engineers Annual International Meeting. Paper Number 084219 Available: http://asae.frymulti.com/azdez.asp?search=1&JID=5&AID=25050&CID=prov2008&v=&i=&T=1

Quantifying Winter Discharge of Controlled Release Fertilizers to Determine Environmental Impact and Plant Uptake - (Abstract Only)

Owen, J.S., Altland, J.E., Scagel, C.F., Stoven, H., Horneck, D., Frantz, J. 2009. Quantifying Winter Discharge of Controlled Release Fertilizers to Determine Environmental Impact and Plant Uptake. Hortscience Proceedings. 2009 ASHS Annual Conference, 25-28 July 2009, St Louis Mo. 44(4):1064.

Use of Switchgrass as the Primary Potting Component in Nursery Containers - (Abstract Only)

Altland, J.E., Frantz, J. 2009. Use of Switchgrass as the Primary Potting Component in Nursery Containers. Hortscience Proceedings. 44:1130.

Preemergence Control of Black Cottonwood in Nursery Containers     - (Peer Reviewed Journal)

Altland, J.E. 2009. Preemergence Control of Black Cottonwood in Nursery Containers. Journal of Environmental Horticulture. 27(1):51–55.

Substrate pH Affects Nutrient Availability in Fertilized Douglas Fir Bark Substrates     - (Peer Reviewed Journal)

Altland, J.E., Buamscha, G., Horneck, D. 2008. Substrate pH Affects Nutrient Availability in Fertilized Douglas Fir Bark Substrates. HortScience. 43:2171-2178.

Interaction of Glyphosate and Pelargonic acid in Ready-To-Use Weed Control Products     - (Peer Reviewed Journal)

Wehtje, G., Altland, J.E., Gilliam, C. 2009. Interaction of Glyphosate and Pelargonic acid in Ready-To-Use Weed Control Products. Weed Technology. 23:544-549.

Effect of Peat Moss and Pumice on Douglas Fir Bark based Soilless Substrate Physical and Hydraulic Properties     - (Peer Reviewed Journal)

Altland, J.E., Magdalena, Z., Owen, J. 2009. Effect of Peat Moss and Pumice on Douglas Fir Bark based Soilless Substrate Physical and Hydraulic Properties. HortScience. 44(3):874-878.

Application Technology Research for Asian Soybean Rust Management     - (Other)

Derksen, R.C. 2008. Application Technology Research for Asian Soybean Rust Management. Plant Management Network. Available at: http://www.plantmanagementnetwork.org/edcenter/seminars/ApplicationTechnology.

Interaction of Glyphosate and Diquat in Ready-To-Use Weed Control Products     - (Peer Reviewed Journal)

Altland, J.E., Glenn, W., Gilliam, C. 2008. Interaction of Glyphosate and Diquat in Ready-To-Use Weed Control Products. Weed Technology. 22(3):472-476.

Nitrogen Availability in Fresh and Aged Douglas Fir Bark     - (Peer Reviewed Journal)

Altland, J.E., Buamscha, G., Sullivan, D., Horneck, D. 2008. Nitrogen Availability in Fresh and Aged Douglas Fir Bark. HortTechnology. 18(4):619-623.

Liverwort (Marchantia polymorpha) Response to Quinoclamine in a Pine Bark Substrate     - (Peer Reviewed Journal)

Altland, J.E., Wehtje, G., Gilliam, C., Mckee, M. 2008. Liverwort (Marchantia polymorpha) Response to Quinoclamine in a Pine Bark Substrate. Weed Science. 56(5):762-766.

Determining the Influence of Spray Quality, Nozzle Type, Spray Volume, and Air-Assisted Application Strategies on Deposition of Pesticides in Soybean Canopy     - (Peer Reviewed Journal)

Derksen, R.C., Zhu, H., Ozkan, E., Hannond, R., Dorrance, A. 2008. 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.

Spacing Studies in Peppers - (Abstract Only)

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.

Comparing Greenhouse Handgun Delivery to Poinsettias by Spray Volume and Quality     - (Peer Reviewed Journal)

Derksen, R.C., Frantz, J., Ranger, C.M., Locke, J.C., Zhu, H., Krause, C.R. 2008. Comparing Greenhouse Handgun Delivery to Poinsettias by Spray Volume and Quality. Transactions of the ASABE. 51(1)27-33.

Container Height and Douglas Fir Bark Texture Affect Substrate Physical Properties     - (Peer Reviewed Journal)

Altland, J.E., Owen, J. 2008. Container Height and Douglas Fir Bark Texture Affect Substrate Physical Properties. HortScience. 43:505-508.

Fungicide Application Technology - (Proceedings)

Derksen, R.C., Ozkan, H.E., Zhu, H., Hammond, R., Dorrance, A. 2007. Fungicide Application Technology. National Soybean Rust Symposium.

Field Evaluation of Application Variables and Plant Spacing for Bell Pepper Pest Management     - (Peer Reviewed Journal)

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.

Nutrient Availability from Douglas Fir Bark in Response to Substrate pH     - (Peer Reviewed Journal)

Altland, J.E., Buamscha, G. 2008. Nutrient Availability from Douglas Fir Bark in Response to Substrate pH. HortScience. 43:478-483.

COMPETITION FROM BLACK COTTONWOOD IN NURSERY CONTAINERS - (Proceedings)

Altland, J.E. 2008. Competition from black cottonwood in nursery containers. Proceedings of Northeastern Weed Science Society. 62:47.

Comparing digital software to human observation for estimating weed cover in nursery containers - (Proceedings)

Altland, J.E. 2008. Comparing digital software to human observation for estimating weed cover in nursery containers. Weed Science Society of America Meeting Abstracts.

Detecting Root Rot Stress in Geranium by Measuring Changes in Leaf Temperature - (Research Notes)

Omer, M.A., Locke, J.C., Frantz, J. 2007. Detecting Root Rot Stress in Geranium by Measuring Changes in Leaf Temperature. Northwest Ohio's Commercial Greenhouse Resource. 3(6):4-5.

Cottonwood Control in Nursery Containers - (Abstract Only)

Altland, J.E. 2008. Cottonwood Control in Nursery Containers. Southern Nursery Association Proceedings.

Influence of Container Mulches on Irrigation and Nutrient Management     - (Peer Reviewed Journal)

Altland, J.E., Lanthier, M. 2007. Influence of Container Mulches on Irrigation and Nutrient Management. Journal of Environmental Horticulture. 25:234-238.

Continuous columns for determining moisture characteristic curves of soilless substrates - (Abstract Only)

Altland, J.E., Mielcarek, M., Owen, J., Zazirska, M. 2007. Continuous columns for determining moisture characteristic curves of soilless substrates. Southern Nursery Association Proceedings. 52:538-542.

Coverage and Drift Produced by Air Induction and Conventional Hydraulic Nozzles Used for Orchard Applications     - (Peer Reviewed Journal)

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.

The Effect of Spray Volume and Quality on Handgun Delivery of Pesticides to Greenhouse Plants     - (Proceedings)

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.

Effects of Pumping on Entomopathogenic Nematodes and Temperature Increase within a Spray System     - (Peer Reviewed Journal)

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.

Nozzle and Equipment Considerations for Improved Coverage in the Soybean Canopy: A Summary of the Work Done in Ohio - (Proceedings)

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.

Statistical Evaluation of Instruments Designed to Measure Volumetric Water of Soilless Container Media     - (Peer Reviewed Journal)

Hansen, R.C., Christman, J.C., Derksen, R.C. 2006. Statistical Evaluation of Instruments Designed to Measure Volumetric Water of Soilless Container Media. Applied Engineering in Agriculture. 22(5):753-763.

The Effect of Application Variables on Spray Retention, Coverage, and Ground Losses in Nursery Tree Applications     - (Peer Reviewed Journal)

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.

EFFECT OF PLANT STAND DENSITY AND PESTICIDE APPLICATION TECHNOLOGY ON INSECT PESTS AND DISEASES OF BELL PEPPERS     - (Abstract Only)

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.

Using Computational Fluid Dynamics to Predict Damage of a Biological Pesticide during Passage through a Hydraulic Nozzle     - (Peer Reviewed Journal)

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.

Effects of Air-Assisted and Conventional Spray Delivery Systems on Management of Soybean Diseases     - (Peer Reviewed Journal)

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. International Advances in Pesticide Application--Aspects of Applied Biology. 77:415-422.

HIT THE BULL'S EYE: KNOW PEST, PLANT CANOPY, AND PESTICIDE TO BOOST SPRAYER EFFICIENCY IN VEGETABLES     - (Popular Publication)

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.

Viability of a Biological Pest Control Agent Through Hydraulic Nozzles     - (Peer Reviewed Journal)

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.

RESEARCH TO REDUCE POTENTIAL DAMAGE FROM SPRAY DRIFT LOSS BY THE USDA-ARS APPLICATION TECHNOLOGY RESEARCH UNIT - (Proceedings)

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.

SHOPPING FOR SPRAYERS: TAKE SPRAYING CAPACITY AND INTENDED USE INTO CONSIDERATION WHEN PURCHASING A SPRAYER - (Popular Publication)

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.

Dynamic Segmentation for Automatic Spray Deposits Analysis on Uneven Leaf Surfaces     - (Peer Reviewed Journal)

Ramalingam, N., Ling, P.P., Derksen, R.C. 2003. Dynamic Segmentation for Automatic Spray Deposits Analysis on Uneven Leaf Surfaces. Transactions of the ASAE. 46(3):893-900.

Comparing Greenhouse Sprayers: The Dose Transfer Process - (Peer Reviewed Journal)

Ebert, T.A., Derksen, R.C., Downer, R.A., Krause, C.R. 2003. Comparing Greenhouse Sprayers: The Dose Transfer Process. Pest Management Science. 60(5):507-513.