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United States Department of Agriculture

Agricultural Research Service

Related Topics

Bradley K Fritz (Brad)
Aerial Application Technology Research
Agricultural Engineering

Phone: (979) 260-9584
Fax: (979) 260-9386

3103 F&B ROAD
COLLEGE STATION , TX 77845

Projects
Aerial Application Technology for Sustainable Crop Production
Appropriated (D)
  Accession Number: 425641
Deployed Warfighter Protection Research Program (FY 2016)
Interagency Reimbursable Agreement (I)
  Accession Number: 430340

Publications (Clicking on the reprint icon Reprint Icon will take you to the publication reprint.)
Model based decision support system for agrochemical applications for MMAT nozzles -
The effect of adjuvants at high spray pressures for aerial applications -
Measuring spray droplet size from agricultural nozzles using laser diffraction -
Evaluation of spray droplet spectrum of sprayers used for vector control -
Farooq, M., Hoffmann, W.C., Fritz, B.K., Cote, N., Walker, T., Smith, V. 2016. Evaluation of spray droplet spectrum of sprayers used for vector control. Atomization and Sprays. 26(8):739-754.
A practical interpretation and use of the USDA aerial fixed-wing nozzle models -
Fritz, B.K., Hoffmann, W.C., Bretthauer, S. 2016. A practical interpretation and use of the USDA aerial fixed-wing nozzle models. Applied Engineering in Agriculture. 32(1):29-35.
Effects of Spray Adjuvants on Spray Droplet Size from a Rotary Atomizer -
Hoffmann, W.C., Fritz, B.K., Yang, C. 2016. Effects of Spray Adjuvants on Spray Droplet Size from a Rotary Atomizer. American Society for Testing and Materials. 35:52-60. doi:10.1520/STP1587201400992.
Assessing the fate of an aromatic hydrocarbon fluid in agricultural spray applications using the three-stage ADVOCATE model framework -
Toose, L., Warren, C., Mackay, D., Pinkerton, T., Letinski, D., Manning, R., Connelly, M., Rohde, A., Fritz, B.K., Hoffmann, W.C. 2015. Assessing the fate of an aromatic hydrocarbon fluid in agricultural spray applications using the three-stage ADVOCATE model framework. Journal of Agricultural and Food Chemistry. 63(31):6866-6875.
Response surface method for evaluation of the performance of agricultural application spray nozzles -
Fritz, B.K., Hoffmann, W.C., Anderson, J. 2016. Response surface method for evaluation of the performance of agricultural application spray nozzles. Pesticide Formulation and Delivery Systems: 35th Volume, American Society for Testing and Materials STP1587, G.R. Goss, ed., ASTM International, West Conshohocken, PA. pp. 61-76. doi:10.1520/STP158720140100.
Influence of herbicide active ingredient, nozzle type, orifice size, spray pressure, and carrier volume rate on spray droplet size characteristics -
Creech, C., Henry, R., Fritz, B.K., Kruger, G. 2015. Influence of herbicide active ingredient, nozzle type, orifice size, spray pressure, and carrier volume rate on spray droplet size characteristics. Weed Technology. 29(2):298-310.
Spray drift reduction test method correlation -
Elsik, C., Fritz, B.K. 2015. Spray drift reduction test method correlation. Journal of ASTM International. doi: 10.1520/STP157920130171.
Update to the USDA-ARS fixed-wing spray nozzle models -
Fritz, B.K., Hoffmann, W.C. 2015. Update to the USDA-ARS fixed-wing spray nozzle models. Transactions of the ASABE. 58(2):281-295.
Development of a low-volume sprayer for an unmanned autonomous helicopter -
Huang, Y., Hoffmann, W.C., Lan, Y., Fritz, B.K., Thomson, S.J. 2014. Development of a low-volume sprayer for an unmanned autonomous helicopter. Journal of Agricultural Science. 7(1):148-153.
The biological effect of cage design corrected for reductions in spray penetration -
Fritz, B.K., Hoffmann, W.C., Bonds, J., Haas, K., Zbigniew, C. 2014. The biological effect of cage design corrected for reductions in spray penetration. Journal of Plant Protection Research. 54(4):395-400.
An airborne multispectral imaging system based on two consumer-grade cameras for agricultural remote sensing -
Yang, C., Westbrook, J.K., Suh, C.P., Martin, D.E., Hoffmann, W.C., Lan, Y., Fritz, B.K., Goolsby, J. 2014. An airborne multispectral imaging system based on two consumer-grade cameras for agricultural remote sensing. Remote Sensing. 6:5257-5278.
Measuring droplet size of agriuclutral spray nozzles - Measurement distance and airspeed effects -
Fritz, B.K., Hoffmann, W.C., Bagley, W.E., Kruger, G., Czaczyk, Z., Henry, R. 2014. Measuring droplet size of agriuclutral spray nozzles - Measurement distance and airspeed effects. Atomization and Sprays. 24(9):747-760.
Measuring the effect of spray plume angle on the accuracy of droplet size data -
Henry, R., Kruger, G., Fritz, B.K., Hoffmann, W.C., Bagley, B., Czazyck, Z. 2014. Measuring the effect of spray plume angle on the accuracy of droplet size data. In: Sesa, C., editor. Pesticide Formulation and Delivery Systems: 33rd Volume, "Sustainability: Contributions from Formulation Technology." West Conshohocken, PA: ASTM International. p. 129-138. DOI: 10.1520/STP1569-EB.
Evaluation of 1, 3, 6, 8-Pyrene Tetra Sulfonic Acid tetra sodium salt (PTSA) as an agricultural spray tracer dye -
Hoffmann, W.C., Fritz, B.K., Ledebuhr, M. 2014. Evaluation of 1, 3, 6, 8-pyrene tetra sulfonic acid tetra sodium salt (PTSA) as an agricultural spray tracer dye. Applied Engineering in Agriculture. 30(1):25-28.
Inflence of air shear and adjuvants on spray atomization -
Fritz, B.K., Hoffmann, W.C., Bagley, W.E., Kruger, G., Czaczyk, Z., Henry, R. 2014. Inflence of air shear and adjuvants on spray atomization. In: Sesa, C., editor. Pesticide Formulation and Delivery Systems: 33rd Volume, Sustainability: Contributions from Formulation Technology, STP 1569. ASTM International: West Conshohocken, PA. p. 139-150. doi: 10.1520/STP156920120131.
Effects of nozzle spray angle on droplet size and velocity -
Hoffmann, W.C., Fritz, B.K., Bagley, W.E., Kruger, G., Henry, R., Czaczyk, Z. 2014. Effects of nozzle spray angle on droplet size and velocity. In: Sesa, C., editor. Pesticide Formulation and Delivery Systems: 33rd Volume, Sustainability: Contributions from Formulation Technology, STP 1569. ASTM International: West Conshohocken, PA. p. 151-173. doi: 10.1520/STP156920120131.
Comparison of drop size data from ground and aerial application nozzles at three testing laboratories -
Fritz, B.K., Hoffmann, W.C., Kruger, G., Henry, R., Hewitt, A., Czaczyk, Z. 2014. Comparison of drop size data from ground and aerial application nozzles at three testing laboratories. Atomization and Sprays. 24(2):181-192.
Development and prospect of unmanned aerial vehicles for agricultural production management -
Huang, Y., Thomson, S.J., Hoffman, W.C., Lan, Y., Fritz, B.K. 2013. Development and prospect of unmanned aerial vehicles for agricultural production management. International Journal of Agricultural and Biological Engineering. 6(3):1-10.
Remote sensing and aerial application -
Yang, C., Hoffmann, W.C., Fritz, B.K. 2013. Remote sensing and aerial application. Agricultural Aviation. 40(5):23-25.
A two-camera imaging system for pest detection and aerial application -
Yang, C., Hoffmann, W.C., Martin, D.E., Lan, Y., Fritz, B.K., Westbrook, J.K., Suh, C.P. 2013. A two-camera imaging system for pest detection and aerial application. ASABE Annual International Meeting. Paper No. 131598742.
Evaluation of aerial spray technologies for adult mosquito control applications -
Hoffmann, W.C., Fritz, B.K., Farooq, M., Walker, T., Hornsby, J., Bond, J. 2013. Evaluation of aerial spray technologies for adult mosquito control applications. Journal of Plant Protection Research. 53:222-29.
Atomization from agricultural spray nozzles: Effects of air shear and tank mix adjuvants -
Fritz, B.K., Hoffmann, W.C., Bagley, W.E., Kruger, G. 2013. Atomization from agricultural spray nozzles: Effects of air shear and tank mix adjuvants. Proceedings of the 10th Annual International Symposium on Adjuvants for Agrochemicals. April 22-26, 2013. Foz de Iguacu, Brazil.
Measurement and classification methods using the ASAE S572-1 reference nozzles -
Fritz, B.K., Hoffmann, W.C., Czaczyk, Z., Bagley, W., Kruger, G., Henry, R. 2012. Measurement and classification methods using the ASAE S572-1 reference nozzles. Journal of Plant Protection Research. 52:447-457.
Correction of spray concentration and bioassay cage penetration data -
Fritz, B.K., Hoffmann, W.C., Bonds, J., Haas, K. 2012. Correction of spray concentration and bioassay cage penetration data. American Mosquito Control Association. 28(40):320-322.
Determination of selection criteria for spray drift reduction from atomization data -
Hoffmann, W.C., Fritz, B.K., Bagley, W., Gednalske, J., Elsik, C., Kruger, G. 2012. Determination of selection criteria for spray drift reduction from atomization data. ASTM Special Technical Publication 1558 STP. p. 65-79.
Effect of formulated glyphosate and adjuvant tank mixes on atomization from aerial application flat fan nozzles -
Fritz, B.K., Hoffmann, W.C., Bagley, W.E. 2012. Effect of formulated glyphosate and adjuvant tank mixes on atomization from aerial application flat fan nozzles. Journal of ASTM International. doi 10.1520/STP104451.
Wind tunnel and field evaluation of drift from aerial spray applications with multiple spray formulations -
Fritz, B.K., Hoffmann, W.C., Bretthauer, S., Wolf, R.E., Bagley, W.E. 2012. Wind tunnel and field evaluation of drift from aerial spray applications with multiple spray formulations. Journal of ASTM International. doi 10-1520/STP104403.
Further evaluation of spray characterization of sprayers typically used in vector control -
Hoffmann, W.C., Walker, T.W., Fritz, B.K., Farooq, M., Smith, V.L., Robinson, C.A., Lan, Y. 2012. Further evaluation of spray characterization of sprayers typically used in vector control. Journal of the American Mosquito Control Association. 28(2):93-101.
Aerial ULV application of permethrin against adult mosquitoes over open field and medium density canopy habitat in a hot-temperate zone -
Britch, S.C., Linthicum, K., Aldridge, R.L., Walker, T.W., Farooq, M., Fritz, B.K., Hoffmann, W.C., Parker, C.T., Breidenbaugh, M.S., Kerce, J. 2012. Aerial ULV application of permethrin against adult mosquitoes over open field and medium density canopy habitat in a hot-temperate zone. Meeting Abstract. p.39.
Optimizing selection of controllable variables to minimize downwind drift from aerially applied sprays -
Huang, Y., Zhan, W., Fritz, B.K., Thomson, S.J. 2012. Optimizing selection of controllable variables to minimize downwind drift from aerially applied sprays. Applied Engineering in Agriculture. 28(3):307-314.
Expansion of the USDA ARS Aerial Application spray atomization models -
Fritz, B.K., Hoffmann, W.C., Martin, D.E., Lan, Y. 2011. Expansion of the USDA ARS Aerial Application spray atomization models. Proceedings Annual Conference on Liquid Atomization and Spray Systems. Estoril, Portugal, September 5-7, 2011. p. 1-7.
Temporal indications of atmospheric stability affecting off-target spray drift in the midsouth U S -
Thomson, S.J., Huang, Y., Fritz, B.K. 2011. Temporal indications of atmospheric stability affecting off-target spray drift in the midsouth U S. Proceedings of the American Society of Agricultural and Biological Engineers International (ASABE). pp. 8.
Field scale evaluation of spray drift reduction technologies from ground and aerial application systems -
Fritz, B.K., Hoffmann, W.C., Bagley, W.E., Hewitt, A. 2011. Field scale evaluation of spray drift reduction technologies from ground and aerial application systems. Journal of ASTM International. 8(5):JAI103457.
Air and spray mixture temperature effects on atomization of agricultural sprays -
Hoffmann, W.C., Fritz, B.K., Martin, D.E. 2011. Air and spray mixture temperature effects on atomization of agricultural sprays. Agricultural Engineering International: CIGR Journal. 13(1):Manuscript 1730.
Effects of air speed and liquid temperature on droplet size -
Hoffmann, W.C., Fritz, B.K., Bagley, W.E., Lan, Y. 2011. Effects of air speed and liquid temperature on droplet size. Journal of ASTM International. 8(4):JAI103461.
A fluorescent tracer method for evaluating spray transport and fate of field and laboratory spray applications -
Fritz, B.K., Hoffmann, W.C., Jank, P.C. 2011. A fluorescent tracer method for evaluating spray transport and fate of field and laboratory spray applications. Journal of ASTM International. 8(3):JAI103619.
Volumetric Collection Efficiency and Droplet Sizing Accuracy of Rotary Impactors -
Fritz, B.K., Hoffmann, W.C., Bonds, J.A., Farooq, M. 2011. Volumetric collection efficiency and droplet sizing accuracy of rotary impactors. Transactions of the ASABE. 54:57-63.
Impact of electrostatic and conventional sprayers characteristics on dispersion of barrier spray -
Farooq, M., Walker, T.W., Heintschel, B.P., Hoffmann, W.C., Fritz, B.K., Smith, V.L., Robinson, C.A., English, T. 2010. Impact of electrostatic and conventional sprayers characteristics on dispersion of barrier spray. Journal of the American Mosquito Control Association. 26:422-429.
Filtration effects due to bioassay cage design and screen type -
Fritz, B.K., Hoffmann, W.C., Farooq, M., Walker, T., Bonds, J. 2010. Filtration effects due to bioassay cage design and screen type. Journal of the American Mosquito Control Association. 26:411-421.
Development of a PWM precision spraying controller for unmanned aerial vehicles -
Zhu, H., Lan, Y., Wu, W., Hoffmann, W.C., Huang, Y., Xue, X., Liang, J., Fritz, B.K. 2010. Development of a PWM precision spraying controller for unmanned aerial vehicles. Journal of Bionics. 7:276-283.
Spray drift reduction evaluations of spray nozzles using a standardized testing protocol -
Hoffmann, W.C., Fritz, B.K., Thornburg, J.W., Bagley, W.E., Birchfield, N.B., Ellenberger, J. 2010. Spray drift reduction evaluations of spray nozzles using a standardized testing protocol. Journal of ASTM International. 7(6):JAI102820.
Novaluron as an ovicide for bollworm on cotton: Deposition and efficacy of field-scale aerial applications -
Martin, D.E., Lopez, J., Lan, Y., Fritz, B.K., Hoffmann, W.C., Duke, S.E. 2010. Novaluron as an ovicide for bollworm on cotton: Deposition and efficacy of field-scale aerial applications. Journal of Cotton Science. 14:99-106.
Simulating and characterizing agricultural ground applications for soil VOC deposition studies -
Fritz, B.K., Hoffmann, W.C., Rohde, A., Warren, C., Faulkner, W. 2010. Simulating and characterizing agricultural ground applications for soil VOC deposition studies. Journal of ASTM International. 7(7):Paper ID JAI102776.
Ground-based spectral reflectance measurements for evaluating the efficacy of aerially-applied glyphosate treatments -
Zhang, H., Lan, Y., Lacey, R., Hoffmann, W.C., Martin, D.E., Fritz, B.K., Lopez, J. 2010. Ground-based spectral reflectance measurements for evaluating the efficacy of aerially-applied glyphosate treatments. Biosystems Engineering. 107:10-15.
Analysis of Impact of Various Factors on Downwind Deposition Using a Simulation Method -
Huang, Y., Zhan, W., Fritz, B.K., Thomson, S.J., Fang, A. 2010. Analysis of Impact of Various Factors on Downwind Deposition Using a Simulation Method. American Society for Testing and Materials 7(6):1-10.
Evaluation of spray drift using low speed wind tunnel measurements and dispersion modeling -
Fritz, B.K., Hoffmann, W.C., Birchfield, N., Ellenberger, J., Kahn, F., Bagley, W.E., Thornburg, J.W., Hewitt, A. 2010. Evaluation of spray drift using low speed wind tunnel measurements and dispersion modeling. Journal of ASTM International. 7(6):JAI102775.
Development of Unmanned Aerial Vehicles for Site-Specific Crop Production Management -
Huang, Y., Hoffmann, W.C., Lan, Y., Thomson, S.J., Fritz, B.K. 2010. Development of Unmanned Aerial Vehicles for Site-Specific Crop Production Management. Proceedings of 10th International Conference on Precision Agriculture, July 18-21, 2010, Denver, CO. CDROM.
Evaluation of low-volume sprayers used in asian citrus Psyllid control applications -
Hoffmann, W.C., Fritz, B.K., Martin, D.E., Atwood, R., Hurner, T., Ledebuhr, M., Tandy, M., Jackson, J., Wisler, G.C. 2010. Evaluation of low-volume sprayers used in asian citrus Psyllid control applications. HortTechnology. 20:632-639.
Quantifying the movement of multiple insects using an optical insect counter -
Hoffmann, W.C., Jank, P.C., Klun, J.A., Fritz, B.K. 2010. Quantifying the movement of multiple insects using an optical insect counter. Journal of the American Mosquito Control Association. 26:167-171.
Low-volume sprayer rodeos -
Hoffmann, W.C., Fritz, B.K., Martin, D.E. 2009. Low-volume sprayer rodeos. Florida Grower. p. 12-13.
Ground-based spectral reflectance measurements for efficacy evaluation of aerially applied glyphosate treatments -
Zhang, H., Lan, Y., Lacey, R., Hoffmann, W.C., Martin, D.E., Fritz, B.K., Lopez, J. 2009. Ground-based spectral reflectance measurements for efficacy evaluation of aerially applied glyphosate treatments. National Agricultural Aviation Association Meeting. Paper No. AA09-004.
An overview of spray drift reduction testing of spray nozzles -
Fritz, B.K., Hoffmann, W.C., Thornburg, J.W., Bagley, W.E., Birchfield, N., Ellenberger, J. 2009. An overview of spray drift reduction testing of spray nozzles. National Agricultural Aviation Association Meeting. Paper No. AA09-002.
Analysis of Impact of Various Factors on Downwind Deposition Using a Simulation Method -
Huang, Y., Zhan, W., Fritz, B.K., Thomson, S.J., Fang, A. 2009. Analysis of Impact of Various Factors on Downwind Deposition Using a Simulation Method. Proceedings of the 30th Symposium on Pesticide Formulations and Delivery Systems, American Society for Testing and Materials. October 20-22, 2009, Atlanta, GA.
Aerosol sampling: Comparison of two rotating impactors for field droplet sizing and volumetric measurements -
Barber, J., Greer, M., Fritz, B.K., Hoffmann, W.C. 2009. Aerosol sampling: Comparison of two rotating impactors for field droplet sizing and volumetric measurements. Journal of the American Mosquito Control Association. 25:474-479.
Effects of spray mixtures on droplet size under aerial application conditions and implications on drift -
Fritz, B.K., Bagley, B., Hoffmann, W.C. 2010. Effects of spray mixtures on droplet size under aerial application conditions and implications on drift. Applied Engineering in Agriculture. 26:21-29.
Development of a Spray System for An Unmanned Aerial Vehicle Platform -
Huang, Y., Hoffmann, W.C., Lan, Y., Wu, W., Fritz, B.K. 2009. Development of a Spray System for An Unmanned Aerial Vehicle Platform. Applied Engineering in Agriculture. 25(6):803-809.
Aerial spray deposition on corn silks applied at high and low spray rates -
Fritz, B.K., Lopez, J., Latheef, M.A., Martin, D.E., Hoffmann, W.C., Lan, Y. 2009. Aerial spray deposition on corn silks applied at high and low spray rates. International Agricultural Engineering Journal. 11:Manuscript 1360.
Spray characterization of ULV sprayers typically used in vector control -
Hoffmann, W.C., Walker, T., Fritz, B.K., Farooq, M., Smith, V., Robinson, C., Szumlas, D., Lan, Y. 2009. Spray characterization of ULV sprayers typically used in vector control. Journal of the American Mosquito Control Association. 25:332-337.
Canopy penetration and deposition of barrier sprays from electrostatic and conventional sprayers -
Hoffmann, W.C., Farooq, M., Walker, T.W., Fritz, B.K., Szumlas, D., Bernier, U.R., Hogsette Jr., J.A., Lan, Y., Huang, Y., Quinn, B.P., Smith, V.L., Robinson, C.A. 2009. Canopy penetration and deposition of barrier sprays from electrostatic and conventional sprayers. Journal of the American Mosquito Control Association. 25:323-331.
Wind-tunnel tests and modeling indicate that aerial dispersant delivery operations are highly accurate -
Hoffmann, W.C., Nedwed, T., Coolbaugh, T., Huber, C.A., Fritz, B.K. 2009. Wind-tunnel tests and modeling indicate that aerial dispersant delivery operations are highly accurate. In: Jones, N., editor. Proceedings of the Thirty-second AMOP Technical Seminar on Environmental Contamination and Response. Ottawa, Ontario, Canada: Environment Canada. p. 365-382.
Development and testing of a laboratory spray table methodology to bioassay simulated levels of aerial spray drift -
Fritz, B.K., Hoffmann, W.C., Parker, C.T., Lopez, J. 2009. Development and testing of a laboratory spray table methodology to bioassay aerial spray drift. Journal of ASTM International. 6(6):Paper ID JAI102125.
Evaluation of the EPA Drift Reduction Technology (DRT) low-speed wind tunnel protocol -
Fritz, B.K., Hoffmann, W.C., Lan, Y. 2009. Evaluation of the EPA Drift Reduction Technology (DRT) low-speed wind tunnel protocol. Journal of ASTM International. 6:doi:10.1520/SAI102129.
Evaluation of a proposed drift reduction technology high-speed wind tunnel testing protocol -
Hoffmann, W.C., Fritz, B.K., Lan, Y. 2009. Evaluation of a proposed drift reduction technology high-speed wind tunnel testing protocol. Journal of ASTM International. 6:doi:10.1520/JAI102122.
Deposition and droplet sizing characterization of a laboratory spray table -
Fritz, B.K., Parker, C.T., Lopez, J., Hoffmann, W.C., Schleider, P.G. 2008. Deposition and droplet sizing characterization of a laboratory spray table. Applied Engineering in Agriculture. 25:175-180.
Spray characteristics affected by physical properties of adjuvants -
Lan, Y., Fritz, B.K., Hoffmann, W.C., Bagley, W.E., Huang, Y., Martin, D.E., Lopez, J. 2008. Spray characteristics affected by physical properties of adjuvants. National Agricultural Aviation Association Meeting. Paper No. AA-08-005.
Deposition of insecticides on corn silks applied at high and low spray rates for control of corn earworm -
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.
Spray spectrum modifications through changes in airspeed to minimize drift -
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.
Spray characterization of thermal fogging equipment typically used in vector control -
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. Spray characterization of thermal fogging equipment typically used in vector control. Journal of the American Mosquito Control Association. 24:550-559.
Effects of System Pressure and Nozzle Type on Spray Application of Avian Vaccines -
Purswell, J.L., Fritz, B.K., Branton, S.L., Leigh, S.A. 2008. Effects of System Pressure and Nozzle Type on Spray Application of Avian Vaccines. Applied Engineering in Agriculture 24(6):785-789.
Effect of adjuvant physical properties on spray characteristics -
Lan, Y., Fritz, B.K., Hoffmann, W.C., Huang, Y. 2008. Effect of adjuvant physical properties on spray characteristics. ASABE Annual International Meeting. Paper No. 08-4174.
Evaluation of toxicity of selected insecticides against thrips on cotton in laboratory bioassays -
Lopez, J., Fritz, B.K., Latheef, M.A., Lan, Y., Martin, D.E., Hoffmann, W.C. 2008. Evaluation of toxicity of selected insecticides against thrips on cotton in laboratory bioassays. Journal of Cotton Science. 12:188-194.
Atmospheric effects on the fate of aerially applied agricultural sprays -
Fritz, B.K., Hoffmann, W.C. 2008. Atmospheric effects on the fate of aerially applied agricultural sprays. International Agricultural Engineering Journal. X:08008.
Development of an airborne remote sensing system for aerial applicators -
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.
Low-level atmospheric temperature inversions: Characteristics and impacts on agricultural applications -
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. X:PM-08001.
Development of an unmanned aerial vehicle-based remote sensing system for site-specific management in precision agriculture -
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) -
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.
Laboratory evaluation of Novaluron for toxicity to nymphal instars of field collected southern green stink bug on cotton -
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 -
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.
Development of an unmanned aerial vehicle-based spray system for highly accurate site-specific application -
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 -
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.
Effects of water hardness on spray droplet size under aerial application conditions -
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 -
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 -
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 -
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.
Aerial application methods for increasing spray deposition on wheat heads -
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 -
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 -
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.
Asynoptic high resolution upper-air data for high impact weather events -
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.
Asynoptic high resolution upper-air data for high impact weather events. -
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. Proceedings of the American Meteorological Society Conference on Weather Analysis and Forecasting, Park City, UT, June 25, 2007. Poster No. 1.48.
Characterization of Truck Mounted Atomization Equipment Typically Used in Vector Control -
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 -
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 -
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 American Mosquito Control Association. 24:419-426.
Droplet size characterization of hand-held atomization equipment typically used in vector control -
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 -
Hoffmann, W.C., Fritz, B.K., Martin, D.E. 2007. AGDISP sensitivity to crop canopy characterization. Transactions of the ASABE. 50:1117-1122.
Effectiveness of spray adjuvants on reduction of spray drift -
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.
Atmospheric and stability effects on aerially applied agricultural sprays - Preliminary results -
Fritz, B.K. 2006. Atmospheric and stability effects on aerially applied agricultural sprays-Preliminary results. In: Proceedings of the National Agricultural Aviation Association Meeting, December 4, 2006, Orlando, Florida. Paper No. AA06-006.
METEOROLOGICAL EFFECTS ON DEPOSITION AND DRIFT OF AERIALLY APPLIED SPRAYS -
Fritz, B.K. 2006. Meteorological effects on deposition and drift of aerially applied sprays. Transactions of the ASABE. 49:1295-1301.
USDA-ARS AERIAL APPLICATION TECHNOLOGY FOR CROP PRODUCTION AND PROTECTION GROUP - RESEARCH OVERVIEW -
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 -
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 -
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 -
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.
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 -
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.
Influence of meteorological time frame and variation on horizontal dispersion coefficients in Gaussian dispersion modeling -
Fritz, B.K., Shaw, B.W., Parnell, C.B. 2005. Influence of meteorological time frame and variation on horizontal dispersion coefficients in Gaussian dispersion modeling. Transactions of the ASAE. 48:1185-1196.
Aerial methods for increasing spray deposits on wheat heads -
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.
ROLE OF ATMOSPHERIC STABILITY IN DRIFT AND DEPOSITION OF AERIALLY APPLIED SPRAYS - PRELIMINARY RESULTS -
Fritz, B.K. 2004. Role of atmospheric stability in drift and deposition of aerially applied sprays - preliminary results. American Society of Agricultural Engineers Meetings Papers, August 1-4, 2004, Ottawa, Canada. Paper No. 04-1031.
ALTERNATIVES TO INCREASE AERIAL SPRAY DEPOSITS FOR FHB CONTROL -
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.
MEASUREMENT AND ANALYSIS OF ATMOSPHERIC STABILITY IN TWO TEXAS REGIONS -
Fritz, B.K. 2003. Measurement and analysis of atmospheric stability in two Texas regions. In: Proceedings of the American Society of Agricultural Engineers/National Agricultural Aviation Association Technical Session, December 6-10, 2003, Reno, Nevada. Paper No. AA03-005.
The Fritz-Texas A&M dispersion model development and comparative modeling with ISC3 and AERMOD -
Fritz, B.K., Shaw, B.W., Parnell, C.B. 2003. The Fritz-Texas A&M dispersion model development and comparative modeling with ISC3 and AERMOD. Proceedings of the Beltwide Cotton Conference, January 6-10, 2003, Nashville, TN. CDROM.
ARS News Articles
Last Modified: 5/2/2016
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