Projects

Aerial Application Research for Efficient Crop Production Appropriated (D)   Accession Number: 414825

Deployed Warfighter Protection Research Program (Fy2008) Reimbursable (R)   Accession Number: 412722

Optimization of Application System for a Low-Viscosity and a New Viscous Oil Dispersant Gel Trust (T)   Accession Number: 416621

Publications

Deposition and droplet sizing characterization of a laboratory spray table - (Peer Reviewed Journal) - (18-Dec-08)

Effect of Hexaflumuron on gustation and reproduction of adult boll weevil - (Peer Reviewed Journal) - (15-Dec-08)

Aerial electrostatic-charged spray for deposition and efficacy against sweetpotato whitefly on cotton - (Peer Reviewed Journal) - (12-Dec-08)

Spray spectrum modifications through changes in airspeed to minimize drift - (Proceedings/Symposium)

Fritz, B.K., Bagley, B., Hoffmann, W.C., Lan, Y. 2009. Spray spectrum modifications through changes in airspeed to minimize drift. National Agricultural Aviation Association Meeting. Paper No. AA08-002.

Deposition of insecticides on corn silks applied at high and low spray rates for control of corn earworm - (Proceedings/Symposium)

Fritz, B.K., Lopez, J., Latheef, M.A., Martin, D.E., Hoffmann, W.C., Lan, Y. 2008. Deposition of insecticides on corn silks applied at high and low spray rates for control of corn earworm. National Agricultural Aviation Association Meeting. Paper No. AA08-004.

Characterization of thermal fogging equipment typically used in vector control - (Peer Reviewed Journal)

Hoffmann, W.C., Walker, T.W., Fritz, B.K., Gwinn, T., Smith, V.L., Szumlas, D., Lan, Y., Huang, Y., Sykes, D., Quinn, B.P. 2008. Characterization of thermal fogging equipment typically used in vector control. Journal of the Mosquito Control Association. 24:550-559.

Evaluation of toxicity in laboratory bioassays of selected insecticides against Western flower thrips (Thysanoptera: Thripidae) - (Peer Reviewed Journal) - (25-Aug-08)

Atmospheric effects on the fate of aerially applied agricultural sprays - (Peer Reviewed Journal)

Fritz, B.K., Hoffmann, W.C. 2008. Atmospheric effects on the fate of aerially applied agricultural sprays. International Agricultural Engineering Journal. Manuscript PM 08008. Vol. X.

Development of an airborne remote sensing system for aerial applicators - (Proceedings/Symposium)

Lan, Y., Huang, Y., Martin, D.E., Hoffmann, W.C., Fritz, B.K., Lopez, J. 2008. Development of an airborne remote sensing system for aerial applicators. Proceedings of the Annual Precision Ag Conference, July 20-23, 2008, Denver, CO. p. 5-25.

Variable rate fertilization for maize and its effects based on the site specific soil fertility and yield - (Peer Reviewed Journal)

Zhang, S., Lan, Y., Li, W., Hoffmann, W.C., Xu, Y., Ma, C. 2008. Variable rate fertilization for maize and its effects based on the site specific soil fertility and yield. International Agricultural Engineering Journal; the CIGR eJournal. IT-08-002. Vol X:1-10.

Development of a data acquisition and processing system for precision agriculture - (Peer Reviewed Journal)

Zhang, S., Lan, Y., Wu, W., Hoffmann, W.C., Chen, G. 2008. Development of a data acquisition and processing system for precision agriculture. International Agricultural Engineering Journal; the CIGR eJournal. IT-08-001. Vol X:1-11.

Development of an airborne remote sensing system for crop pest management - Part 1 System integration and verification - (Peer Reviewed Journal) - (20-Jun-08)

Low-level atmospheric temperature inversions: Characteristics and impacts on agricultural applications - (Peer Reviewed Journal)

Fritz, B.K., Hoffmann, W.C., Lan, Y., Thomson, S.J., Huang, Y. 2008. Low-level atmospheric temperature inversions: Characteristics and impacts on agricultural applications. International Agricultural Engineering Journal. PM 08 001. Vol. X.

Development of an unmanned aerial vehicle-based remote sensing system for site-specific management in precision agriculture - (Proceedings/Symposium)

Huang, Y., Lan, Y., Hoffmann, W.C., Fritz, B.K. 2008. Development of an unmanned aerial vehicle-based remote sensing system for site-specific management in precision agriculture. Proceedings of the 9th International Symposium on Precision Agriculture, Denver, CO.

Adult vial bioassays of insecticidal toxicity against cotton fleahopper, Pseudatomoscelis seriatus (Reuter) (Hemiptera: Miridae) - (Peer Reviewed Journal)

Lopez, J., Hoffmann, W.C., Latheef, M.A., Fritz, B.K., Martin, D.E., Lan, Y. 2008. Adult vial bioassays of insecticidal toxicity against cotton fleahopper, Pseudatomoscelis seriatus (Reuter) (Hemiptera: Miridae). Journal of Pesticide Science. 33:261-265.

Evaluation of aerial delivery systems for spray deposition and efficacy against sweet potato whitefly on cotton - (Peer Reviewed Journal)

Latheef, M.A., Kirk, I.W., Bouse, L.F., Carlton, J.B., Hoffmann, W.C. 2008. Evaluation of aerial delivery systems for spray deposition and efficacy against sweet potato whitefly on cotton. Applied Engineering in Agriculture. 24:415-422.

Laboratory evaluation of Novaluron for toxicity to nymphal instars of field collected southern green stink bug on cotton - (Peer Reviewed Journal)

Lopez, J., Lan, Y., Latheef, M.A., Hoffmann, W.C., Fritz, B.K., Martin, D.E. 2008. Laboratory evaluation of novaluron for toxicity to nymphal instars of field collected southern green stink bug on cotton. Southwestern Entomologist. 33:119-127.

Spray adjuvant effects on droplet size spectra measured by three laser-based systems - (Peer Reviewed Journal)

Hoffmann, W.C., Hewitt, A.J., Ross, J.B., Bagley, W.E., Martin, D.E., Fritz, B.K. 2008. Spray adjuvant effects on droplet size spectra measured by three laser-based systems. Journal of ASTM International. 5(6):Paper ID JAI101233.

Use of Airborne Multi-Spectral Imagery in Pest Management Systems - (Peer Reviewed Journal)

Huang, Y., Lan, Y., Hoffmann, W.C. 2008. Use of Airborne Multi-Spectral Imagery in Pest Management Systems. Intl. Ag. Engr. J. X:07 010.

Development of an unmanned aerial vehicle-based spray system for highly accurate site-specific application - (Proceedings/Symposium)

Huang, Y., Hoffmann, W.C., Fritz, B.K., Lan, Y. 2008. Development of an unmanned aerial vehicle-based spray system for highly accurate site-specific application. Proceedings of the ASABE Annual International Meeting, St. Joseph, MO. Paper No. 08-3909.

Drift reduction with drift control adjuvants - (Proceedings/Symposium)

Lan, Y., Hoffmann, W.C., Fritz, B.K., Martin, D.E., Lopez, J. 2008. Drift reduction with drift control adjuvants. ASABE Annual International Meeting. Paper No. 07-1060.

Enhancement of data analysis through multisensor data fusion technology - (Proceedings/Symposium)

Huang, Y., Lan, Y., Hoffmann, W.C., Lacey, R. 2007. Enhancement of data analysis through multisensor data fusion technology. ASABE Annual International Meeting. Paper No. 07-3002.

Development of a data acquisition and processing system for precision agriculture - (Proceedings/Symposium)

Zhang, S., Lan, Y., Wu, W., Hoffmann, W.C., Chen, G. 2007. Development of a data acquisition and processing system for precision agriculture. ASABE Annual International Meeting. Paper No. 07-1067.

Variable rate fertilization for maize and its effects based on the site-specific soil fertility and yield - (Proceedings/Symposium)

Zhang, S., Lan, Y., Li, W., Hoffmann, W.C., Xu, Y., Ma, C. 2007. Variable rate fertilization for maize and its effects based on the site-specific soil fertility and yield. ASABE Annual International Meeting. Paper No. 07-1066.

Effects of water hardness on spray droplet size under aerial application conditions - (Peer Reviewed Journal)

Hoffmann, W.C., Bagley, W.E., Fritz, B.K., Lan, Y., Martin, D.E. 2008. Effects of water hardness on spray droplet size under aerial application conditions. Applied Engineering in Agriculture. 24(1):11-14.

Development of a system for determining collection efficiency of spray samplers - (Peer Reviewed Journal)

Fritz, B.K., Hoffmann, W.C. 2008. Development of a system for determining collection efficiency of spray samplers. Applied Engineering in Agriculture. 24:285-293.

Meteorological influences on mass accountability of aerially applied sprays - (Proceedings/Symposium)

Fritz, B.K., Hoffmann, W.C. Meteorological influences on mass accountability of aerially applied sprays. Proceedings of the American Society of Agricultural and Biological Engineers International (ASABE). December 10, 2007, Reno, NV. Paper No. AA07-003.

Collection efficiency of various airborne spray flux samplers used in aerial application research - (Peer Reviewed Journal)

Fritz, B.K., Hoffmann, W.C. 2008. Collection efficiency of various airborne spray flux samplers used in aerial application research. Journal of ASTM International. 5(1):Paper ID JAI01493.

Novaluron as an ovicide for bollworm on cotton: Deposition and efficacy of field-scale aerial applications - (Peer Reviewed Journal) - (09-Nov-07)

Crop pest management with an aerial imaging system - (Proceedings/Symposium)

Lan, Y., Huang, Y., Martin, D.E., Hoffmann, W.C. 2008. Crop pest management with an aerial imaging system. National Agricultural Aviation Association Meeting. ASABE Paper No. 07-005.

Remote Sensing and GIS Applications for Precision Areawide Pest Management: Implications for Homeland Security - (Book/Chapter)

Huang, Y., Lan, Y., Westbrook, J.K., Hoffmann, W.C. 2008. Remote sensing and GIS applications for precision areawide pest management: Implications for homeland security. In: Sui, D.Z., Cutter, S.L., editors. Geospatial Technologies and Homeland Security: Research Frontiers and Challenges. New York, NY: Springer. p. 242-256.

Aerial application methods for increasing spray deposition on wheat heads - (Peer Reviewed Journal)

Fritz, B.K., Hoffmann, W.C., Martin, D.E., Thomson, S.J. 2007. Aerial application methods for increasing spray deposition on wheat heads. Applied Engineering in Agriculture. 23(6):709-715.

Field evaluation of spinosad aerial applications for thrips control on cotton - (Peer Reviewed Journal)

Martin, D.E., Lopez, J., Hoffmann, W.C., Fritz, B.K., Lan, Y. 2007. Field evaluation of spinosad aerial applications for thrips control on cotton. Southwestern Entomologist. 32(4):221-228.

Drift reduction with drift control adjuvants - (Abstract)

Lan, Y., Hoffmann, W.C., Fritz, B.K., Martin, D.E., Lopez, J. 2007. Drift reduction with drift control adjuvants. ASABE Annual International Meeting. Paper No. 07-1060.

Airborne multi-spectral remote sensing with ground truth for areawide pest management - (Proceedings/Symposium)

Lan, Y., Huang, Y., Hoffmann, W.C. 2007. Airborne multi-spectral remote sensing with ground truth for areawide pest management. Proceedings of the ASABE Annual International Meeting, St. Louis, MO. Paper No. 07-3004.

Asynoptic high resolution upper-air data for high impact weather events - (Abstract)

Zeitler, J.W., Witsaman, P., Foster, S., Hoffmann, W.C., Fritz, B.K. 2007. Asynoptic high resolution upper-air data for high impact weather events [abstract]. In: Proceedings of the American Meteorological Society Conference on Weather Analysis and Forecasting. Conference on Weather Analysis and Forecasting, June 25, 2007, Park City, Utah. Poster No. 1.48.

Development of a precision areawide pest management decision system for cotton - Preliminary study - (Abstract)

Lan, Y., Hoffmann, W.C., Westbrook, J.K. 2007. Development of a precision areawide pest management decision system for cotton - Preliminary study. Proceedings of World Cotton Research Conference, September 10-14, 2007, Lubbock, TX. CDROM.

Characterization of Truck Mounted Atomization Equipment Typically Used in Vector Control - (Peer Reviewed Journal)

Hoffmann, W.C., Walker, T.W., Martin, D.E., Barber, J.A.B., Gwinn, T., Smith, V.L., Szumlas, D., Lan, Y., Fritz, B.K. 2007. Characterization of truck-mounted atomization equipment typically used in vector control. Journal of the American Mosquito Control Association. 23(3):321-329.

Spray drift mitigation with spray mix adjuvants - (Peer Reviewed Journal)

Lan, Y., Hoffmann, W.C., Fritz, B.K., Martin, D.E., Lopez, J. 2008. Spray drift mitigation with spray mix adjuvants. Applied Engineering in Agriculture. 24(1):5-10.

Effects of Wind Speed on Aerosol Spray Penetration in Adult Mosquito Bioassay Cages - (Peer Reviewed Journal)

Hoffmann, W.C., Fritz, B.K., Farooq, M., Cooperband, M.F. 2008. Effects of wind speed on aerosol spray penetration in adult mosquito bioassay cages. Journal of the Mosquito Control Association. 24:419-426.

Development of a PC-based data acquisition and control system - (Peer Reviewed Journal)

Lan, Y., Lin, X., Kocher, M.F., Hoffmann, W.C. 2007. Development of a PC-based data acquisition and control system. International Agricultural Engineering Journal. 9:1-11.

Enhancement of Data Analysis Through Multisensor Data Fusion Technology - (Abstract)

Huang, Y., Lan, Y., Hoffmann, W.C., Lacey, R. 2007. Enhancement of Data Analysis Through Multisensor Data Fusion Technology. Proceedings of the ASABE Annual International Meeting, St. Louis, MO. Paper No. 07-3002.

Droplet size characterization of hand-held atomization equipment typically used in vector control - (Peer Reviewed Journal)

Hoffmann, W.C., Walker, T.W., Smith, V.L., Martin, D.E., Fritz, B.K. 2007. Droplet-size characterization of handheld atomization equipment typically used in vector control. Journal of the American Mosquito Control Association. 23(3):315-320.

Agdisp Sensitivity to Crop Canopy Characterization - (Peer Reviewed Journal)

Hoffmann, W.C., Fritz, B.K., Martin, D.E. 2007. AGDISP sensitivity to crop canopy characterization. Transactions of the ASABE. 50:1117-1122.

Airborne multispectral remote sensing with ground truth for areawide pest management - (Abstract)

Lan, Y., Huang, Y., Hoffmann, W.C. 2007. Airborne multispectral remote sensing with ground truth for areawide pest management. Proceedings of the ASABE Annual International Meeting, St. Louis, MO. Paper No. 07-3004.

Multisensor Data Fusion for High Quality Data Analysis and Processing in Measurement and Instrumentation - (Peer Reviewed Journal)

Huang, Y., Lan, Y., Hoffmann, W.C., Lacey, R.E. 2007. Multisensor data fusion for high quality data analysis and processing in measurement and instrumentation. Journal of Bionics Engineering. 6:53-62.

Effectiveness of spray adjuvants on reduction of spray drift - (Proceedings/Symposium)

Lan, Y., Hoffmann, W.C., Fritz, B.K., Martin, D.E., Lopez, J. 2006. Effectiveness of spray adjuvants on reduction of spray drift. ASABE Annual International Meeting, December 4, 2006, Orlando, Florida. Paper No. AA06-004.

Economic Analysis of Insect Control Strategies Using An Integrated Crop Ecosystem Management Model - (Peer Reviewed Journal)

Lan, Y., Benedict, J.H., Ring, D.R., Hoffmann, W.C. 2006. Economic analysis of insect control strategies using an integrated crop ecosystem management model. Agricultural Engineering International: The CIGR Ejournal. 8:1-18.

USDA-ARS Aerial Application Technology for Crop Production and Protection Group - Research Overview - (Proceedings/Symposium)

Fritz, B.K., Hoffmann, W.C., Martin, D.E., Lopez, J., Lan, Y. 2006. USDA-ARS aerial application technology for crop production and protection group - research overview. In: Proceedings of the SERG-International and US Forestry Service Workshop, February 15-18, 2006, Banff, Canada, p. 25-28.

Aerial Application Methods for Increasing Spray Deposition on Wheat Heads - (Peer Reviewed Journal)

Fritz, B.K., Kirk, I.W., Hoffmann, W.C., Martin, D.E., Hofman, V., Hollingsworth, C., McMullen, M., Halley, S. 2006. Aerial application methods for increasing spray deposition on wheat heads. Applied Engineering in Agriculture. 22:357-364.

Aerial Application Methods for Increasing Spray Deposition on Wheat Heads - (Proceedings/Symposium)

Fritz, B.K., Hoffmann, W.C., Martin, D.E. 2005. Aerial application methods for increasing spray deposition on wheat heads. In: Proceedings of the National Agricultural Aviation Association Meeting, December 4-7, 2005, Reno, Nevada. Paper No. AA05-006.

Novaluron as an ovicide: A model for evaluation of aerially-applied insectides. Part 2: Field Study - (Abstract)

Martin, D.E., Lopez, J., Hoffmann, W.C., Fritz, B.K. 2005. Novaluron as an ovicide: A model for evaluation of aerially-applied insectides. Part 2: Field Study. National Agricultural Aviation Association Meeting. Paper No. AA05-005.

A New Variable Flow Rate Nozzle for Aerial Application - (Abstract)

Bui, Q.D., Gardisser, D.R., Hoffmann, W.C. 2005. A new variable flow rate nozzle for aerial application [abstract]. American Society of Agricultural Engineers/National Agricultural Aviation Association. Paper No. AA05-008.

Field-collected and AGDISP-predicted spray flux from an aerial application - (Peer Reviewed Journal)

Hoffmann, W.C. 2006. Field-collected and AGDISP-predicted spray flux from an aerial application. Journal of ASTM International. 3(1): Paper ID JAI12908.

Hi-Rise - Hazardous Incident Rapid in-Flight Support Effort: Use of Asynoptic Upper-Air Data to Improve Weather Forecasts at Wildland Fires and Other Hazardous Incidents - (Abstract)

Witsaman, P.G., Zeitler, J.W., Oaks, M.C., Murdoch, G.P., Nagle, S.R., Hoffmann, W.C., Fritz, B.K. 2005. HI-RISE - Hazardous incident rapid in-flight support effort: Use of asynoptic upper-air data to improve weather forecasts at wildland fires and other hazardous incidents. In: Proceedings of the Joint 6th Symposium on Fire and Forest Meteorology and 19th Interior West Fire Council Meeting, October 25-27, 2005, Canmore, Alberta, Canada. 2005 CDROM.

Temperature and Spray Adjuvant Effects on Droplet Velocity and Size - (Abstract)

Hoffmann, W.C. 2005. Temperature and spray adjuvant effects on droplet velocity and size [abstract]. In: Proceedings of the ASAE Annual International Meeting, July 17-20, 2005, Tampa, Florida. Paper No. 051151.

Spray Deposition and Drift from Two "medium" Nozzles - (Peer Reviewed Journal)

Hoffmann, W.C., Kirk, I.W. 2005. Spray deposition and drift from two medium nozzles. Transactions of the ASAE. 48:5-11.

Field Swath and Drift Analyses Techniques - (Peer Reviewed Journal) - (16-Nov-04)

Comparison of Three Imaging Systems for Water-Sensitive Papers - (Peer Reviewed Journal)

Hoffmann, W.C., Hewitt, A.J. 2005. Comparison of three imaging systems for water-sensitive papers. Applied Engineering in Agriculture. 21:961-964.

Crop and Canopy Effects of Spray Deposition and Drift - (Abstract)

Hoffmann, W.C. Crop and canopy effects of spray deposition and drift [abstract]. Proceedings of the International Conference on Pesticide Application for Drift Management, October 27-29, 2004, Waikoloa, Hawaii. 2004 CDROM.

Aerial methods for increasing spray deposits on wheat heads - (Proceedings/Symposium)

Kirk, I.W., Fritz, B.K., Hoffmann, W.C. 2004. Aerial methods for increasing spray deposits on wheat heads. Proceedings of the American Society of Agricultural Engineers, August 1-4, 2004, Ottawa, Ontario, Canada. Paper No. 04-1029.

Deployment of Insecticides and Acaricides - (Book/Chapter)

Hoffmann, W.C. 2006. Deployment of insecticides and acaricides. In: All, J.N., Treacy, M.F., editors. ESA Handbook on Use and Management of Insecticides, Acaricides, and Transgenic Crops. St. Paul, MN: APS Press. p. 73-80.

Alternatives to Increase Aerial Spray Deposits for Fhb Control - (Proceedings/Symposium)

Kirk, I.W., Fritz, B.K., Hoffmann, W.C. 2003. Alternatives to increase aerial spray deposits for FHB control. In: Proceedings of the National Fusarium Head Blight Forum, December 13-15, 2003, Bloomington, Minnesota. p. 88-91.

Comparison of Droplet Imaging Systems for Water-Sensitive Cards - (Proceedings/Symposium)

Hoffmann, W.C., Hewitt, A.J. 2004. Comparison of droplet imaging systems for water-sensitive cards. Proceedings of Aspects of Applied Biology. 71:463-466.

Effect of aerial application parameters simulated on a spray table on insecticidal mortality of cotton aphids and stink bugs - (Proceedings/Symposium)

Lopez, J., Latheef, M.A., Hoffmann, W.C., Kirk, I.W. 2003. Effect of aerial application parameters simulated on a spray table on insecticidal mortality of cotton aphids and stink bugs. Proceedings of the Beltwide Cotton Conference, January 7-10, 2003, Nashville, TN. p. 1490-1493.

Nozzle Classifications and You - (Trade Journal)

Hoffmann, W.C., Kirk, I.W. 2003. Nozzle classifications and you. Agricultural Aviation. 30(1):27-29.