03/01/2007

Journal Publications


Adamchuk, V.I., M.T. Morgan, and S.M. Brouder. 2006. Analysis of variability in automated soil pH measurements. Trans. ASAE. 22(3): 335-344.


Bajwa, S. G. 2006. Modeling rice plant nitrogen effect on canopy
reflectance with partial least square regression. Transactions of the ASAE
49(1): 229-237.


Bajwa, S. G., and E. Vories. 2007. Spatial analysis of cotton (Gossypium
hirsutum L.) canopy responses to irrigation in a moderately humid area.
Irrigation Science DOI# 10.1007/s00271-006-0058-4 (Online First).


Bajwa, S. G., and M. Mozaffari. 2006. Response of cotton canopy
reflectance to nitrogen fertilization. In. N. A. Slaton (Ed.) Wayne E. Sabbe
Arkansas Soil Fertility Studies 2005, p.18-21, Research Series 525, Arkansas
Agricultural Experiment Station, Division of Agriculture, Fayetteville, AR.


Balasundram, S. K., P. C. Robert, and D. J. Mulla. 2006. Relationship between oil content and fruit surface color in oil palm (Elaeis guineensis Jacq.). Journal of Plant Sciences. 1(3):217-227.


Balasundram, S. K., P. C. Robert, D. J. Mulla and D. L. Allan. 2006. Relationship between oil palm yield and soil fertility as affected by topography in an Indonesian plantation. Communications in Soil and Plant Analysis. 37(9-10):1321-1337.


Balasundram, S. K., P. C. Robert, D. J. Mulla and D. L. Allan. 2006. Spatial variability of soil fertility variables influencing yield in oil palm (Elaeis guineensis Jacq.). Asian Journal of Plant Sciences. 5(2):389-400.


Balasundram, S. K., D. J. Mulla, P. C. Robert and D. L. Allan. 2006. Accounting for spatial variability in a short-term fertilizer trial for oil palm. Int. J. Soil Sci. 1(3): 184-195.


Bogrekci, I., and W. S. Lee. 2006. Effects of soil moisture content on
absorbance spectra of sandy soils in sensing phosphorus concentrations
using UV-VIS-NIR spectroscopy. Trans. ASABE 49(4): 1175-1180.


Cabot, P.E. Pierce, F.J. Nowak, P. Karthikeyan, K.G. 2006. Monitoring and predicting manure application rates using precision conservation technology. Journal of Soil and Water Conservation. 61(5):282-292.


Chung, S.O., and Sudduth, K.A. 2006. Soil failure models for vertically operating and horizontally operating strength sensors. Transactions of the ASABE 49(4):851-863.


Chung, S.O., Sudduth, K.A., and Hummel, J.W. 2006. Design and validation of an on-the-go soil strength profile sensor. Transactions of the ASABE 49(1):5-14.


Clay, D.E., C.G. Carlson, S.A. Clay, C. Reese, Z. Liu, and M.M. Ellsbury. 2006. Theoretical derivation of new stable and non-isotopic approaches for assessing soil organic C turnover. Agron. J. 98:443-450.


Clay, D.E. K. Kim, J. Chang, S.A. Clay, and K. Dalsted. 2006. Characterizing water and nitrogen stress in corn using remote sensing. Agron. J. 98:579-587.


Clay, S.A., B. Kruetner, D.E. Clay, C. Reese, J. Kleinjan. 2006. Spatial distribution, temporal stability, and yield loss estimates for annual grasses and common ragweed in corn/soybean production field over nine years. Weed Sci. 54:380-390.


Clay, S.A., K. Banken, M.M. Ellsbury, and F. Forcella. 2006. Influence of yellow foxtail on corn growth and yield. Comm. Soil Plant Anal. 37:1421-1435.


Gandonou, J., C.R. Dillon, S.A. Shearer, and T. Stombaugh. 2006. Precision Agriculture Equipment Ownership versus Custom Hire: A Break-even Land Area Analysis. Journal of the American Society of Farm Managers and Rural Appraisers 69(1):106-116.


Hong, N., Scharf, P.C., Davis, J.G., Kitchen, N.R., and Sudduth, K.A. 2006.
Economically optimal nitrogen rate reduces soil residual nitrate. Journal of Environmental Quality 36: 354-362.


Hornung, A. Khosla, R. Reich, R. Inman, D. Westfall, D.G. 2006. Comparison of site-specific management zones: soil-color-based and yield-based. Agronomy Journal. 98(2): 407-415.


Humburg, D. S., P. Thanapura, C. Ren, and D.E. Clay. 2006. Sugarbeet quality
correlation to Landsat canopy data from a large GIS database. Transactions of the ASABE. 49(3) 775-782.


Iqbal, J., P. Owens, and I Ali. 2006. Application of Remote Sensing Data to Assess Weed Infestation in Cotton. Agricultural Journal 1(4): 186-191.


Jahn, B. R., Linker, R., Upadhyaya, S. K., Shavis, A., Slaughter, D. C. and Shmulevi, I. 2006. Mid-infrared spectroscopic determination of soil nitrate content. Biosystems Engineering 94(4):505-515.


Jang, G.S., Sudduth, K.A., Hong, S.Y., Kitchen, N.R., and Palm, H.L. 2006.
Relating hyperspectral image bands and vegetation indices to corn and soybean yield. Korean Journal of Remote Sensing 22(3):183-197.


Jiang, P., Anderson, S.H., Kitchen, N.R., Sadler, E.J., and Sudduth, K.A. 2006. Landscape and conservation management effects on hydraulic properties on a claypan-soil toposequence. Soil Science Society of America Journal. Accepted.


Jung, W.K., Kitchen, N.R., and Sudduth, K.A. 2006. Relationship of soil profile strength and apparent soil electrical conductivity to crop yield. Korean Journal of Soil Science and Fertilizer 39(2):109-115.


Jung, W.K., Kitchen, N.R., Sudduth, K.A., and Anderson, S.H. 2006.
Spatial characteristics of claypan soil properties in an agricultural field. Soil Science Society of America Journal 70: 1387-1397.


Khosla, R. Westfall, D. Reich, R. Inman, D. 2006. Temporal and Spatial Stability of Soil Test Parameters Used in Precision Agriculture. Communications in Soil Science and Plant Analysis. 37(15-20): 127-2136.


Kim, H.J., Sudduth, K.A., and Hummel, J.W. 2006. Sensing nitrate and potassium ions in soil extracts using ion-selective electrodes. Journal of Biosystems Engineering 31(6):463-473.


Lambert, Dayton, J. Lowenberg-DeBoer and Gary Malzer. (2006). Economic Analysis of Spatial-Temporal Patterns in Corn and Soybean Response to Nitrogen and Phosphorous. Agronomy Journal 98:43-54.


Liu, Y., S. M. Swinton, and N. R. Miller. 2006. Is Site-specific Yield
Response Consistent over Time? Does it Pay? American Journal of
Agricultural Economics 88(2):471-483.


Martin, N., Bollero, G., Kitchen, N.R., Kravchenko, A.N., Sudduth, K.A., Wiebold, W.J., Bullock, D. 2006. Two classification methods for developing and interpreting productivity zones using site properties. Plant Soil 288: 357-371.


Mercuri P. A., B.A. Engel and C. J. Johannsen. 2006. Evaluation and Accuracy Assessment of High-Resolution IFSAR DEMs in Low-Relief Areas. International Journal of Remote Sensing. 27 (13): 2767-2786.


Miao, Y., D. J. Mulla, P. C. Robert and J. A. Hernandez. 2006. Within-Field Variation in Corn Yield and Grain Quality Responses to N Fertilization and Hybrid Selection. Agron. J. 98:129-140.


Miao, Y., D. J. Mulla and P. C. Robert. 2006. Spatial Variability of Soil Properties, Corn Quality and Yield in Two Illinois, USA Fields: Implications for Precision Corn Management. Prec. Agric. 7:5-20.


Miao, Y., D. J. Mulla, W. D. Batchelor, J. O. Paz, P. C. Robert and M. Wiebers. 2006. Evaluating Management Zone Specific Optimal N Rates with a Crop Growth Model. Agron. J. 98:545-553..


Miao, Y., D. J. Mulla and P. C. Robert. 2006. Identifying Important Factors Influencing Corn Yield and Grain Quality Variability using Artificial Neural Networks. Prec. Agric. 7(2):117-136.


Min, M., W. S. Lee, Y. H. Kim, and R. A. Bucklin. 2006. Nondestructive
detection of nitrogen in Chinese cabbage leaves using VIS-NIR
spectroscopy. HortScience 41(1): 162-166.


Myers, D.B., Kitchen, N.R., Sudduth, K.A., Miles, R.J., and Sharp, R.E. Soybean root distribution related to claypan soil properties and apparent soil electrical conductivity. Crop Science. (accepted)


Omonode, R.A., and T. Vyn. 2006. Spatial dependence and relationships of electrical conductivity to soil organic matter, phosphorus, and potassium. Soil Science 171(3):223-238.


Papiernik, S.K., W.C. Koskinen, L. Cox, P.J. Rice, S.A. Clay, N.R. Werdin-Pfisterer, and K.A. Nordberg. 2006. Sorption-desorption of imidacloprid and its metabolites in soil and vadose zone materials. J. Agric. Food Chem. 54:863-870.


Pena-Yewtukhiw, E.M., G.J. Schwab and L.W. Murdock. 2006. Univariate Distribution Analysis to Evaluate Variable Rate Fertilization. Agron J. 98:554-561.


Pydipati, R., T. F. Burks, and W. S. Lee. 2006. Identification of citrus
disease using color texture features and discriminant analysis.
Computers and Electronics in Agriculture 52(1): 49-59.


Roel, A., H. Firpo and R.E. Plant. Why Do Some Farmers Get Higher
Yields? Multivariate Analysis of a Group of Uruguayan Rice Farmers.
Computers and Electronics in Agriculture. In press.


Scharf, P.C. Kitchen, N.R., Sudduth, K.A., and Davis, J.G. 2006. Spatially variable corn yield is a weak predictor of optimal nitrogen rate. Soil Science Society of America Journal 70:2154-2160.


Scharf, P.C., S.M. Brouder, and R.G. Hoeft. 2006. Chlorophyll meter readings can predict nitrogen need and yield response of corn in the North-Central USA. Agron. J. 98:655-665.


Souza, E., Scharf, P., Sudduth, K.A., and Hipple, J.D. 2006. Using a field radiometer to estimate instantaneous sky clearness. Brazilian Journal of Agricultural and Environmental Engineering 10(2):369-373.


Sripada, R.P., R.W. Heiniger, J.G. White, and A.D. Meijer. 2006. Aerial color infrared photography for determining early in-season nitrogen requirements for corn. Agron. J. 98:968-977.


Sudduth, K.A., Chung, S.O., Andrade-Sanchez, P., and Upadhyaya, S.K. Field comparison of two prototype soil strength profile sensors. Computers and Electronics in Agriculture. (accepted).


Thomson, S.J., L.A. Smith, and J.E. Hanks. 2007. An Instrumentation
Platform and GPS Position Latency Issues for Remote Sensing on
Agricultural Aircraft. Transactions of the ASABE. 50(1): 13-21.


Books


Clay, D.E., N. Kitchen, C.G. Carlson, J. Kleinjan, and J. Chang. 2007. Using historical management to reduce soil sampling errors. Pg 49-64. In: Pierce, F. and D.E. Clay (eds). GIS Applications in Agriculture. CRC Press, Boca Raton, FL.


Clay, D.E., S.A. Clay, and C.G. Carlson. 2006. Site-specific management from a cropping systems perspective. Pg. 431-462. In Srinivasan, A. (ed) Precision farming  A global perspective. Haworth Press, Inc.


Johannsen, C.J. 2006. Land Remote Sensing Applications for Human Welfare Support: Food Security. Contributions of Remote Sensing for Decisions about Human Welfare Workshop, National Research Council, Washington, DC. Appendix A 4 pp.


Kitchen, N.R., Goulding, K.W.T., and Shanahan, J.F. Proven practices and innovative technologies for on-farm crop nitrogen management. In Nitrogen in the Environment. Elsevier Science, Amsterdam, Netherlands. (accepted)


Kleinjan, J., D.E. Clay, C.G. Carlson, and S.A. Clay. 2007. Developing productivity zones from multiple years of yield monitor data. Pg. 65-80. In: Pierce, F. and D.E. Clay (eds). GIS Applications in Agriculture. CRC Press, Boca Raton, FL.


Pierce, F. and D.E. Clay (editors). 2007. GIS Applications in Agriculture. CRC Press, Boca Raton, FL. 203 pg.


Roel, A., G.S. Pettygrove, and R.E. Plant. 2006. Site-specific rice management. Handbook of Precision Agriculture, Principles and Applications. A. Srivivasan, ed. Haworth Press, New York, NY, 319-340. In press.


Proceedings


Adamchuk, V.I., Sudduth, K.A., Ingram, T.J., and Chung, S.O. 2006. Comparison of two alternative methods to map soil mechanical resistance on-the-go. Paper No. 061057. In: ASAE Annual Intl. Meeting Technical Papers. ASAE, St. Joseph, MI (available at: http://asae.frymulti.com/request.asp?JID=5&AID=20587&CID=por2006&T=2).


Bajwa, S. G., and M. Mozaffari. 2006. Effect of petiole nutrients in
cotton on vegetative indices. ASAE Paper No. 061170. St. Joseph, MI: ASAE.


Bajwa, S. G., and E.D. Vories. 2006. Spectral response of cotton canopy
to water stress. ASAE Paper No. 061064. St. Joseph, MI: ASAE.


Bajwa, S. G., and M. Mozaffari. 2006. Correlating vegetative index with
nitrogen treatments in cotton. Summaries of Arkansas Cotton Research 2005,
Research Series. 533, p. xx. Arkansas Agricultural Experiment Station,
Division of Agriculture, Fayetteville, AR.


Bogrekci, I., and W. S. Lee. 2006. The effect of particle size on
sensing phosphorus by Raman spectroscopy. ASAE Paper No. 063048. St.
Joseph, Mich.: ASAE.


Chinchuluun, R., and W. S. Lee. 2006. Citrus yield mapping system in
natural outdoor scenes using the Watershed transform. ASAE Paper No.
063010. St. Joseph, Mich.: ASAE.


Chung, S.O., Sudduth, K.A., Lee, K.S., and Motavalli, P.P. 2006.
Characterization of cone index to define compaction management parameters. In: Proc. ISTRO 17th Triennial Conf., p. 395-400. Kiel, Germany, August 28  September 3, 2006.


Clay, S.A. 2006. Use of remote sensing for weed management. Eighth International Precision Ag. Conference. A to Z Session. Minneapolis, MN July 2006.


Clay, S.A. 2006. Developing weed management zones for site specific farming application. Eighth International Precision Ag. Conference. A to Z Session. Minneapolis, MN July 2006.


Clay, S.A., J. Kleinjan, and D.E. Clay. 2006. Weed emergence by landscape position. International Precision Ag. Conference. Minneapolis, MN July 2006.


Conrad, E., C.R. Dillon and J. Gandonou. Variable Rate Fertilization Profitability on High-Oil Corn Production. Paper presented at the 8th International Conference on Precision Agriculture, Minneapolis, Minnesota, July 23-26, 2006.


Dillon C., J. Gandonou, B. Koostra, T. Stombaugh, T. Mueller. Evaluating the Economic Impact of Field Area Measurements. Poster presented at the 8th International Conference on Precision Agriculture, Minneapolis, Minnesota, July 23-26, 2006.


Erickson, B., and J. Lowenberg DeBoer. Will Higher Fertilizer Prices Drive Adoption of Precision Fertilizer Management? Purdue Agricultural Economics Report, April, 2006. http://www.agecon.purdue.edu/extension/pubs/paer/2006/april/paer0406.pdf


Erickson, Bruce. Economics of Precision Agriculture: Implications for Sugar Cane Production, presented at the Colombian Association of Sugar Cane Technologists National Conference, Cali, Colombia, September 2006.


Gandonou, J. and C.R. Dillon. Precision Timing and Spatial Allocation of Economic Fertilizer Application. Paper presented at the 8th International Conference on Precision Agriculture, Minneapolis, Minnesota, July 23-26, 2006.


Griffin, Terry, J. Lowenberg-DeBoer and R.J.G.M. Florax, Improving Farm Management Decision Making: Experiences from Spatial Analysis of Yield Monitor Data from Field Scale On-Farm Trials, Paper presented at the 8th International Precision Agriculture Conference, Minneapolis, MN, July, 2006.


Griffin, T.W., J.M. Lowenberg-DeBoer and R.J.G.M. Florax, "Improving Farm Management Decision Making: Experience from Spatial Analysis of Yield Monitor Data from Field-Scale On-Farm Trials," presented at the 8th International Precision Agriculture Conference, Minneapolis, MN, July 23-26, 2006.


Humburg, D. S. 2006. Correlation of sugarbeet quality to canopy and field variables using Landsat data and a large GIS database. In Proceedings of the 8th International Conference on Precision Agriculture. July 23-26, 2006. Minneapolis, MN.


Jahn, B. R. and Upadhyaya, S. K. 2006. Development of mid-infrared-based calibration equations for predicting soil nitrate, phosphate, and organic matter concentrations. American Society of Agricultural and Biological Engineers Paper No. 06-1058, St. Joseph, MI 49085.


Jang, G., Sudduth, K.A., Hong, S.Y., Kitchen, N.R., and Palm, H.L. Relating image-derived vetetation indices to crop yield. In: Proc. 20th Biennial Workshop on Aerial Photography, Videography, and High Resolution Digital Imagery for Resource Assessment (unpaginated cd-rom). Am. Soc. for Photogrammetry and Remote Sensing, Bethesda, MD. 2006.


Kane, K. E., W. S. Lee. 2006. Spectral sensing of different citrus varieties for precision agriculture. ASAE Paper No. 061065. St. Joseph, Mich.: ASAE.


Lambert, Dayton M., R.J.G.M. Florax, and Kevin McNamara.. Multiplicative Heteroskedastic-Spatial Process Models: Monte Carlo Experiments and an Empirical Example, proceedings of the 53rd Annual North American Meetings of the Regional Science Association, November 16-18, 2006, Toronto, Canada.


Lowenberg-DeBoer, J., Terry Griffin, R.J.G.M. Florax, Use of Cross Regression to Model Local Spatial Autocorrelation in Precision Agriculture, Paper presented at the 8th International Precision Agriculture Conference, Minneapolis, MN, July, 2006.


Lowenberg-DeBoer, J., and B. Erickson. Economics of Innovative Technologies in Precision Agriculture Nutrient Management, presented at the American Society of Agronomy International Meetings, November, 2006.


Min, M., and W. S. Lee. 2006. Design of a hyperspectral nitrogen sensing
system for citrus. ASAE Paper No. 061061. St. Joseph, Mich.: ASAE.


Nistor, Adela, Jason Brown, Raymond Florax, and Jess Lowenberg-DeBoer. Spatial Modeling of Yield Monitor Data: Implications for Crop Yields with Drainage Water Management, proceedings of the 53rd Annual North American Meetings of the Regional Science Association, November 16-18, 2006, Toronto, Canada.


Reese, C. L., D. E. Clay, D. Beck, J. Kleinjan, C. G. Carlson and S. Clay. Lessons learned from implementing management zones and participatory research in production fields. Eighth International Conference on Precision Agriculture. 23  26 July 2006. Marriott Hotel, Minneapolis, Minnesota.


Roberts, D.R., Kitchen, N.R., Scharf, P.C., and Sudduth, K.A. An environmental assessment of sensor-based variable-rate nitrogen management in corn. In Proc. North Central Extension-Industry Soil Fertility Conf., Des Moines, IA, Nov. 7-8, 2006. Potash and Phosphate Institute, Brookings, SD. 2006.


Salim, J., C. Dillon, and J. Gandonou. (2006). Profit maximization under risk reducing behavior using variable cutting timings for Kentucky alfalfa. Paper presented at the 2006 Precision Agriculture Conference in July 23-26, 2006, Minneapolis, MN.


Shockley, J., S.Saghaian, C. Dillon, and L.Maynard. A Logit Analysis of Precision Agriculture Adoption in Kentucky. Paper presented at the 8th International Conference on Precision Agriculture. Minneapolis, Minnesota. July 23-26, 2006.


Smith, L.A. and S.J. Thomson. 2006. Performance of an Aerial
Variable-Rate Application System With a Hydraulically Powered Chemical
Pump and Spray Valve. NAAA/ASAE Paper No. AA05-009, National
Agricultural Aviation Association, Washington, D.C.


Sudduth, K.A., and Kitchen, N.R. Increasing information with multiple soil electrical conductivity datasets. Paper No. 061055. In: ASABE Annual Intl. Meeting Technical Papers. ASABE, St. Joseph, MI (available at: http://asae.frymulti.com/request.asp? JID=5&AID=21088&CID=por2006&T=2). 2006.


Sudduth, K.A., Chung, S.O., Drummond, S.T., and Kitchen, N.R. Relating spatial variations in soil compaction to soil physical properties and crop yield. In Proc. 8th Intl. Conf. on Precision Agriculture, Minneapolis, MN, July 23-26, 2006 (in press). 2006.


Sudduth, K.A., Chung, S.O., Drummond, S.T., and Kitchen, N.R. Relating spatial variations in soil compaction to soil physical properties and crop yield. In Proc. 8th Intl. Conf. on Precision Agriculture, Minneapolis, MN, July 23-26, 2006 (in press). 2006.


Sudduth, K.A., Jang, G., Lerch, R.N., and Sadler, E.J. Hyperspectral reflectance sensing of reservoir water quality. In: Proc. 20th Biennial Workshop on Aerial Photography, Videography, and High Resolution Digital Imagery for Resource Assessment (unpaginated cd-rom). Am. Soc. for Photogrammetry and Remote Sensing, Bethesda, MD. 2006.


Thompson, J.A., E.M. Pena-Yewtukhiw and J.H. Grove. 2006. Soil-landscape modeling across a physiographic region: Topographic patterns and model transportability. Geoderma. 133:57-70.


Thomson, S.J. and L.A. Smith. 2006. Dynamic testing of GPS on agricultural aircraft for remote sensing and variable rate aerial application. In Proceedings of the IEEE/ION Position, Location and Navigation Symposium (PLANS 2006). CD-ROM: 1067- 1070.


Thomson, S.J. and P.V. Zimba. 2006. Application of hyperspectral imagery and digital videography to manage algal blooms in aquaculture systems: Current status. Proceedings of the 20th Biennial Workshop on Aerial Photography, Videography, and High Resolution Digital Imagery for Resource Assessment. CD-ROM. American Society of Photogrammetry and Remote Sensing (ASPRS), Bethesda, MD.


Upadhyaya, S. K., Shafii, M. S. and Garciano, L. O. 2006. Development of an impact type electronic weighing system for processing tomatoes. American Society of Agricultural and Biological Engineers Paper No. 06-1190, St. Joseph, MI 49085.


Extension Publications


Armstrong, S., and P. Owens. Spatial Variability of Nutrients in Soils Following Long-Term Poultry Litter Applications. SSMC Newsletter, December, 2006.


Kleinjan, J., D.E. Clay, C.G. Carlson, and S.A. Clay. 2006. Developing productivity zones from multiple years of yield monitor data. Site Specific Management Guidelines. 45. Published by Potash and Phosphate Institute.


Erickson, B., and J. Lowenberg-DeBoer. Will Higher Fertilizer Prices Drive Adoption of Precision Fertilizer Management? SSMC Newsletter, January, 2006.


Erickson, B. The Use of Information Technology in Danish Agriculture. SSMC Newsletter, May 2006.


Erickson, B. On-Farm Testing, Robotics, and Guidance Featured at the 2006 Top Farmer Crop Workshop. SSMC Newsletter, July, 2006.


Erickson, B. Precision Agriculture in Colombian Sugar Cane. SSMC Newsletter, September, 2006.


Erickson, B. A Comprehensive New Resource: Handbook of Precision Agriculture. SSMC Newsletter, October, 2006.


Fulton, J.P., M.W. Veal and S.A. Shearer. Performance Assessment of Variable Rate Fertilizer Technology. SSMC Newsletter, April, 2006.


Griffin, T., C. Dobbins, and J. Lowenberg-DeBoer. Whole Farm Profitability Impact from Implementing and Harvesting On-farm Trials: A Linear Programming Model. SSMC Newsletter, August, 2006.


Lowenberg-DeBoer, J. and T. Griffin. Potential for Precision Agriculture Adoption In Brazil. SSMC Newsletter, June 2006.


Lowenberg-DeBoer, J. Effect of Higher Energy and Fertilizer Prices on Precision Ag Adoption. SSMC Newsletter, February, 2006.


Owens, P.R., J. Iqbal and D.M. Miles. Using Geostatistics to Determine Spatial Variability of Nutrients Within a Poultry House. SSMC Newsletter, March, 2006.


Sripada, R.P., R.W. Heiniger, J.G. White, C.R. Crozier, and A.D. Meijer. 2006. Attempt to validate a remote sensing-based late-season corn nitrogen requirement prediction system. Online. Crop Management doi:10.1094/CM-2006-0405-01-RS.


Struthers, R., and B. Erickson. The Modifiable Areal Unit Problem in Precision Agriculture. SSMC Newsletter, November, 2006.


Staff Papers


Whipker, Linda, and Jay Akridge, 2006 Precision Agricultural Services: Dealership Survey Results. Staff Paper No. 06-10, Center for Food and Agricultural Business, Department of Agricultural Economics, Purdue University, West Lafayette, IN, USA, August 2006.


Trade Articles


Erickson, B. Equipped to Succeed. CropLife, March 2006, pp 19-20.


Erickson, B. Fertilizer and Precision, pp. 12-13 in 2006 Technology Tune-Up, supplement to February 2006 editions of CropLife, American Vegetable Grower, CottonGrower, and Western Fruit Grower.


Whipker, Linda and Jay Akridge. A New Future, CropLife. June 2006, pp 10-15.

03/10/2008

Adamchuk, V.I. and P.T. Christenson. 2007. An instrumented blade system for mapping soil mechanical resistance represented as a second-order polynomial. Soil Tillage and Research 95(1): 76-83.


Adamchuk, V.I., E.D. Lund, T.M. Reed, and R.B. Ferguson 2007. Evaluation of on-the-go technology for soil pH mapping. J. Prec. Ag. 8:139-149


Adamchuk, V.I., D.B. Marx, A.T. Kerby, A.L. Samal, L.K. Soh, R.B. Ferguson, and C.S. Wortmann. 2007. Guided soil sampling for enhanced analysis of georeferenced sensor-based data. In: U. Demsar, ed. Proceedings of the Ninth International Conference on Geocomputation 2007 Conference, Maynooth, Ireland, 3-5 September 2007. National University of Ireland.


Adamchuk, V.I., R.M. Hoy, G.E. Meyer, and M.F. Kocher. 2007. GPS-based auto-guidance test program development. In: Precision Agriculture: Papers from the Sixth European Conference on Precision Agriculture, Skiathos, Greece, 3-6 June 2007, 425-432. J. Stafford, ed. Wageningen, The Netherlands: Wageningen Academic Publishers.


Bajwa, S. G., and E. D. Vories. 2007. Spatial analysis of cotton canopy response to irrigation in a moderately humid area. Irrigation Science 25(4): 429-441.

Bajwa, S. G., and M. Mozaffari. 2007. Effect of N treatments on vegetative index of cotton canopy  A spatial regression approach. Transactions of the ASABE 50(5):1883-1892.


Balasundram, S.K., D. J. Mulla and P. C. Robert. 2007. Spatial data calibration for site-specific phosphorus management. International Journal of Agricultural Research 2:888-899.


Bogrekci, I., and W. S. Lee. 2007. Comparison of ultraviolet, visible, and near infrared sensing for soil phosphorus. Biosystems Engineering 96(2): 293-299.


Boomsma, C.R., and T.J. Vyn. 2007. Plant-to-Plant Uniformity is Essential for Optimum Yield in No-Till Continuous Corn. Purdue Extension AY-329-W.


Bullock, David, and J. Lowenberg-DeBoer, Using Spatial Analysis to Study the Values of Variable Rate Technology and Information, Journal of Agricultural Economics, 58:3 (2007), p. 517-535.


Chinchuluun, R., W. S. Lee, and R. Ehsani. 2007. Citrus yield mapping system on a canopy shake and catch harvester. ASABE Paper No. 073050. St. Joseph, Mich.: ASABE.


Cohen, M. J., R. Mylavarapu, I. Bogrekci, W. S. Lee, and M. W. Clark. 2007. Reflectance Spectroscopy for Routine Agronomic Soil Analyses. Soil Science 172(6): 469-485.


Cugati, S.A., W.M. Miller, J.K. Schueller, A.W. Schumann, S. Buchanon, and H.K. Hostler. 2007. Benchmarking of dynamic performance of two commercial variable-rate controllers and components. Transactions of the ASABE. 50(3):795-802.


Ferguson, R.B., T. Kyaw, V.I. Adamchuk, D.D. Tarkalson, and D.L. McCallister. 2007. Site-specific management of pH-induced iron chlorosis of maize. In: J. Stafford (ed). Precision Agriculture: Proceedings of the 6th European Conference on Precision Agriculture, Siakthos, Greece, 3-6 June 2007. pp 151-156. Wageningen Academic Publishers.


Griffin, T.W., Craig Dobbins and J. Lowenberg-DeBoer, Spatial analysis of On-farm Experiments and Subsequent Farm Management Decision Making: A Case Study, Selected Paper, American Agricultural Economics Association Annual Meeting, Portland, OR., USA, July, 2007 (http://agecon.lib.umn.edu/cgi-bin/pdf_view.pl?paperid=26241&ftype=.pdf).


Grigera, M.S., R.A. Drijber, K.M. Eskridge, and B.J. Wienhold. 2006. Soil microbial biomass relationships with organic matter fractions in a Nebraska corn field mapped using apparent electrical conductivity. Soil Science Society of America Journal 70:1480-1488.


Grigera, M.S., R.A. Drijber, and B.J. Wienhold. 2007. Redistribution of crop residues during row cultivation creates a biologically enhanced environment for soil microorganisms. Soil and Tillage Research 94:550-554.


Grigera, M.S., R.A. Drijber, and B.J. Wienhold. 2007. Increased abundance of arbuscular mycorrhizal fungi in soil coincides with the reproductive stages of maize. Soil Biology and Biochemistry 39:1401-1409.


Grigera, M.S., Drijber, R.A., Shores-Morrow, R.H., and Wienhold, B.J. 2007. Distribution of Arbuscular Mycorrhizal Biomarker C16:1cis11 Among Neutral-, Glygo-, and Phospho-Lipids Extracted from Soil During the Reproductive Growth of Corn. Soil Biol. Biochem. 39:1589-1596.


Hager, B.R., S. Brantley, J. Bloxham, R. Eisner, A. Goetz, C.J. Johannsen, J. Kirchner, W. Rose, H. Shah, D. Smit, H. Zebker and M. Zuber. 2007. Solid-Earth Hazards, Natural Resources, and Dynamics, Earth Science Systems, Chapter 8, In Andres, R.A., B. Moore III, et al. (Editors), Earth Science and Applications from Space: National Imperatives for the Next Decade and Beyond, pp 217-255, National Research Council, National Academy Press, Washington, DC.


Hemmat, A., V.I. Adamchuk, and P. Jasa. 2007. On-the-go soil strength sensing using an instrumented disc coulter. In: Proceedings of the International Agricultural Engineering Conference (IAEC-2007), Bangkok, Thailand, 3-6 December, 2007. Pathumthani, Thailand: Asian Association for Agricultural Engineering (CD publication, 8 pages).


Huang, X., S. Senthilkumar, A. Kravchenko, K. Thelen, and J. Qi. 2007. Total carbon mapping in glacial till soils using Near Infrared Spectroscopy, Landsat Imagery, and topographical information. Geoderma 141:34-42.


Kane, K. E., and W. S. Lee. 2007. Multispectral imaging for in-field green citrus identification. ASABE Paper No. 073025. St. Joseph, Mich.: ASABE.


Lambert, D.M., J. Lowenberg-DeBoer, and G. Malzer, Managing Phosphorous Soil Dynamics over Space and Time, Agricultural Economics 37 (2007), p. 43-53.


Lee, K.H., M. R. Ehsani, and J.K. Schueller. 2007. Forward Movement Synchronization of Two Vehicles in Parallel Using A Laser Scanner. Journal of the Applied Engineering in Agriculture. 23(6): 827-834.


Miao, Y., D. J. Mulla, G. W. Randall, J. A. Vetsch and R. Vintila. 2007a. Predicting chlorophyll meter readings with aerial hyperspectral remote sensing for in-season site-specific nitrogen management of corn. pp. 635-641. In: J. V. Stafford (ed.), Precision Agriculture 07. Wageningen Acad. Publ. The Netherlands.


Miao, Y., D. J. Mulla, J. A. Hernandez, M. Wiebers and P. C. Robert. 2007b. Potential impact of precision nitrogen management on corn yield, protein content and test weight. SSSAJ 71:1490-1499.


Nistor, Adela and J. Lowenberg-DeBoer, Drainage Water Management Impact on Farm Profitability, Journal of Soil and Water Conservation, Nov./Dec. 2007, 62:6, p. 443-446.


Okamoto, H., W. S. Lee, and K. E. Kane. 2007. Hyperspectral imaging for green citrus fruit detection. 6th European Conference in Precision Agriculture and 2nd European Conference on Precision Livestock Farming, June 3-6, 2007, Skiathos, Greece.


Pantaleoni, E., B.A. Engel and C.J. Johannsen. 2007. Identifying Agricultural Flood Damage Using Landsat Imagery. Journal of Precision Agriculture, Vol. 8:27-36.


Robertson, G. P., L. W. Burger Jr., C. L. Kling, R. Lowrance and D. J. Mulla. 2007. New approaches to environmental management research at landscape and watershed scales. pp. 27-50. In: (M. Schnepf and C. Cox, eds.), Managing Agricultural Landscapes for Environmental Quality. Soil and Water Conservation Society. Ankeny, IA.


Schueller, J.K. 2007. Intelligente Landtechnik in den USA. Forschung für intelligente Landtechnik. (Festveranstaltung zur Emeritierung von Prof. Dr. Dr. habil. Hermann Auernhammer.) VDI-Seminare am Wissenschaftszentrum. Technischen Universität München. Munich. July 19.


Sripada, R.P., D.C. Farrer, R. Weisz, R.W. Heiniger, and J.G. White. Aerial color infrared photography to optimize in-season nitrogen fertilizer recommendations in winter wheat. Agron. J. 99:1424-1435.

Smith, D.R., P.R. Owens, A.B. Leytem and E.A. Warnemuende. 2007. Nutrient losses from manure and fertilizer app lications as impacted by time to first runoff event. Environmental Pollution.147:131-137.


Solari, F., J. Shanahan, R. Ferguson, J. Schepers and A.A. Gitelson. 2007. Active sensor reflectance measurements of corn nitrogen status and yield potential. Agron. J. (in-press).


Urcola, Hernan, J. Lowenberg-DeBoer, A Stochastic Dominance Method for Incorporating Yield Monitor Data into the Hybrid and Variety Decisions of Argentinean Farmers, Computers and Electronics in Agriculture, 58:1 (Aug., 2007), p. 4-12.


Varvel, G.E., W.W. Wilhelm, J.F. Shanahan, and J.S. Schepers. 2007. An algorithm for corn nitrogen recommendations using a chlorophyll meter based sufficiency index
Agron. J. 99:701-706.


Varvel, G.E., W.W. Wilhelm, J.F. Shanahan, and J.S. Schepers. 2007. Nitrogen fertilizer applications for corn based N sufficiency index calculations. Agron. J. 99: 701-706.


Weisz. R., R.P. Sripada, R.W. Heiniger, J.G. White, and D.C. Farrer. 2007 In-season tissue testing to optimize soft red winter wheat nitrogen fertilizer rates: Influence of biomass. Agron. J. 99:511-520.


Williams, J.D., C.R. Crozier, J.G. White, R.W. Heiniger, R.P. Sripada, and D.A. Crouse. 2007. Illinois soil nitrogen test predicts southeastern U.S. corn economic optimum nitrogen rates. Soil Sci. Soc. Am. J. 71: 735-744.

Whipker, Linda and Jay Akridge. A Midwestern Precision Update. CropLife. June 2007, pp 10-14.

Whipker, Linda and Jay Akridge. Biofuels: Future Challenges and Opportunities. CropLife. June 2007, pp 16-18.

02/19/2009

03/09/2010

Allred, B., B. Clevenger, and D. Saraswat. 2009. Application of GPS and Near-Surface Geophysical Methods to Evaluate Agricultural Test Plot Differences. FastTimes. 14(3): 15-24.

Bajwa, S. G., A. R. Mishra, and R. J. Norman. 2009. Canopy reflectance response to plant nitrogen accumulation in rice. Precision Agriculture DOI: 10.1007/s11119-009-9142-0

Balasundaram, D., T. F. Burks, D. M. Bulanon, T. Schubert, and W. S. Lee. 2009. Spectral reflectance characteristics of citrus canker and other peel conditions of grapefruit. Postharvest Biology and Technology 51(2): 220-226.

Bora, G. and R. Ehsani. 2009. Evaluation of a self-propelled citrus fruit pick-up machine. Applied Engineering in Agriculture. 25(6).

Chinchuluun, R., W. S. Lee, and R. Ehsani. 2009. Machine vision system for determining citrus count and size on a canopy shake and catch harvester. Applied Engineering in Agriculture. 25(4): 451-458.

Chinchuluun, R., Lee, W., Bhorania, J., and Pardalos, P. M. 2009. Clustering and classification algorithms in food and agricultural applications: A survey. In Papajorgji, P. and Pardalos, P. M. (eds.), Advances in Modeling Agricultural Systems. Berlin: Springer: pp. 433-454.

Ehsani, R., T. E. Grift, J. M. Mari, and D. Zhong. 2009. Two fruit counting techniques for citrus mechanical harvesting machinery. Journal of Computers and Electronics in Agriculture. 65. 186-191.

Hemmat A., A. Khorsandy, A. Masoumi and V.I. Adamchuk. 2009. Influence of failure mode induced by a horizontally-operated single-tip penetrometer on measured soil resistance. Soil Tillage and Research 105(1): 49-54.

Hodgen, P., J. Schepers, W. Raun, J. Shanahan and R. Ferguson. 2009. Uptake of point source depleted 15N fertilizer by neighboring corn plants. Agron. J. 101:99-105.

Holan, S., Wang, S., Arab, A., Sadler, E.J., and Stone, K.C. 2008. Semiparametric geographically weighted response curves with application to site specific agriculture. Journal of Agricultural, Biological, and Environmental Statistics 13(4):424-439.

Jiang, P., He, Z., Kitchen, N.R., and Sudduth, K.A. 2009. Bayesian analysis of within-field variability of corn yield using a spatial hierarchical model. Precision Agriculture 10: 111-127.

Kim, H.J., Sudduth, K.A., and Hummel, J.W. 2009. Soil macronutrient sensing for precision agriculture. Journal of Environmental Monitoring 11: 1810-1824.

Kim, D. G., T. F. Burks, A.W. Schumann, M. Zekri, X. Zhao, and J. Qin. 2009. Detection of Citrus Greening Using Microscopic Imaging. Agricultural Engineering International: the CIGR Ejournal XI(2009): 17.

Kitchen, N.R., Sudduth, K.A., Drummond, S.T., Scharf, P.C., Palm, H.L., Roberts, D.F., and Vories, E.D. 2010. Ground-based canopy reflectance sensing for variable-rate nitrogen corn fertilization. Agronomy Journal 102:71-84.

Kulkarni, S.S., S. G. Bajwa. 2009. Investigation on effects of soil compaction in cotton. Transaction of ASAE. Conditionally Accepted.

Lee, K. H. and R. Ehsani. 2009. A laser scanner based measurement system for quantification of tree geometric characteristics. Applied Engineering in Agriculture. 25(5): 777-788.

Lee, K.S., Lee, D.H. Sudduth, K.A., Chung, S.O., Kitchen, N.R., and Drummond, S.T. 2009. Wavelength identification and diffuse reflectance estimation for surface and profile soil properties. Transactions of the ASABE 52(3): 683-695.

Lee, W., Bogrekci, I. and Min, M. 2009. Modeling in nutrient sensing for agricultural and environmental applications." In Papajorgji, P. and Pardalos, P. M. (eds.), Advances in Modeling Agricultural Systems. Berlin: Springer: pp. 297-315.

Maja, J. M. and R. Ehsani. 2009. Development of a Yield Monitoring System for Citrus Mechanical Harvesting Machines. Journal of Precision Agriculture. (Accepted) Available on line: http://www.springerlink.com/content/v577402666302186/?p=2d7e4643059446f08127127c457bac06&pi=8

Okamoto, H., and W. S. Lee. 2009. Green citrus detection using hyperspectral imaging. Computers and Electronics in Agriculture 66(2): 201-208.

Roberts, D.F., V.I. Adamchuk, J.F. Shanahan, R.B. Ferguson, and J.S. Schepers. 2009. Optimization of crop canopy sensor placement for measuring nitrogen status in corn. Agronomy Journal 101(1): 140-149.

Roberts, D.F., Kitchen, N.R., Scharf, P.C, and Sudduth, K.A. 2010. Will variable-rate nitrogen fertilization using corn canopy reflectance sensing deliver environmental benefits? Agronomy Journal 102:85-95.

Roberts, D.F., V.I. Adamchuk, J.F. Shanahan, R.B. Ferguson, J.S. Shepers. 2010. Estimation of surface soil organic matter using a ground-based active sensor and aerial imagery. J. Precision Agriculture (in press).

Scharf, P.C., and Lory, J.A. 2009. Calibrating reflectance measurements to predict optimal sidedress nitrogen rate for corn. Agronomy Journal. 101:615-625.

05/22/2011

Sun, H., D. C. Slaughter, M. P. Ruiz, C. Gliver, S. K. Upadhyaya, and R. F. Smith. 2010. RTK GPS mapping of transplanted row crops. Computer and Electronics in Agriculture. 71:32-37.

Upadhyaya, S. K., D. K. Giles, S. Haneklaus, and E. Schnug. 2010. Advanced engineering systems for specialty crops: A review of Precision Agriculture for water, chemical, nutrient application, and yield monitoring. Author and editor. vTi Special Issue 340.

Jahn, B. R., and S. K. Upadhyaya. 2010. Determination of soil nitrate and organic matter content using portable, filter-based mid-infrared spectroscopy. Chapter 12. In Proximal Soil sensing. Edited by R. A. Viscarra Rosel et al. Progress in Soil Science 1.

Udompetaikul,V, S. K. Upadhyaya, B. Lampinen, and D. Slaughter. 2010. Development of a sensor suite to determine plant water potential. ASABE paper 1009450. ASABE, St. Joseph, MI 49085. Also presented at the 10th International Conference of Precision Agriculture in Denver, CO. ICPA 10-391.


Bajwa, S.G., A. R. Mishra, and R. J. Norman. 2010. Canopy reflectance response to plant nitrogen accumulation in rice. Precision Agriculture 11(5): 488-506.

Kulkarni, S. S., and S.G. Bajwa. 2010. Investigation on effects of soil compaction in cotton. Transactions of the ASABE 53(3): 667-674.

Bajwa, S.G., A. R. Mishra, and R. Norman. 2010. Plant nitrogen accumulation dynamics in rice (Oryza sativa L.) in response to nitrogen management. Communications in Soil Science and Plant Analysis 41(4): 454-471.

Bajwa, S.G., and J. A. Apple. 2010. Non-linear modeling of quality of cooked ground beef patties with visible-NIR spectroscopy. In: Food Engineering, B. C.Siegler (Ed). Nova Science Publishers, Inc., Hauppauge, New York. ISBN 978-1-61728-913-2.

Bajwa, S.G. and S. S. Kulkarni. 2010. Hyperspectral Data Mining. In:.Hyperspectral Remote Sensing of Vegetation, P.S. Thenkabail, J. G. Lyon and A.Huete (Eds). ISBN 978-1-4398453-7-0, CRC Press.

Saraswat, D. 2010. Geospatial Technologies: Unlimited Possibilities for Outreach Education. Delivered before faculty, staff and graduate students of the Department of Food, Agricultural and Biological Engineering, The Ohio State University, Columbus, OH, October 15.

Saraswat, D., L. Espinoza, S. Kulkarni, and Terry Griffin. 2010. Comparative Performance Evaluation of Open and Closed Loop System for Spinner Disc Control on Dry Fertilizer Spreader. In ASABE 2010 Annual International Meeting, Pittsburg, PA, June 20-23.

Maja, J.M., R. Ehsani, D. Saraswat, and J. Robbins. 2010. A Tree Counting and Caliper Measurement System for Open Field Nursery Using Image Processing. In ASABE 2010 Annual International Meeting, Pittsburg, PA, June 20-23.

Kulkarni, S.S, L.T. Barber, E. Barnes, T.W. Griffin, and D. Saraswat. 2010. Cotton Canopy Response to Nitrogen Treatments in Arkansas: Observations Using Crop Circle (ACS-470). In ASABE 2010 Annual International Meeting, Pittsburg, PA, June 20-23.

Traywick, D. and D. Saraswat. 2010. Precision Agriculture Sensors used in Arkansas. In 2010 Teen Leader Conference. 4-H Center, Ferndale, AR, June 9.

Saraswat, D. and T. Griffin. 2010. Delivering Solutions for Agriculture and Natural Resources through Geospatial Technologies. In 2010 Arkansas GIS User Forum Spring Meeting, Little Rock, AR, April 8.

Espinoza, L., D. Saraswat, and M. Ismanov. 2010. Assessment of selected electrical conductivity sensors. In Beltwide Cotton Conference. New Orleans, LA, January 4-7.

Saraswat, D. 2010. Remote sensing for tree counting. Presented before Oregon Nursery Association (ONA) members and nursery industry representatives, Portland, OR, September, 9.

L. Espinoza, D. Saraswat, D. Traywick, M. Ismanov, and P. Ballantyne. 2010 Managing Spatial Variability in Crop Production in Arkansas. In Cotton Research Field Day, Marianna, AR, August 19.

K. Prasanna and D.Saraswat. 2010 Geospatial Technology Website: Where Data Meets Your Need. In Rice Field Day, Stuttgart, AR, August 11.

Saraswat, D., L. Espinoza, D. Traywick, M. Ismanov, and P. Ballantyne. 2010 Managing Spatial Variability in Crop Production in Arkansas. In Optical Sensing Nitrogen Use Efficiency Conference, Stillwater, OK, August 2-4.

Saraswat, D., M. Daniels, and D. Traywick. 2010. Agritourism and Geospatial Technologies: An A-mazing Combination. In 7th Natural Resource Extension Professionals Conference, Fairbanks, AK , June 27-30.

Khosla, R., Westfall, D., Reich, R., Mahal, J.S., and Gangloff, W.J. 2010. Spatial Variation and Site-specific Management Zones. In. Geo-statistical Applications in Precision Agriculture. (ed) M. Oliver. Springer Publishers, Netherlands. Pg 195-219. [Book Chapter]

Krueger, E., Khosla, R., Kurtener, D., and Ermakov, R. 2010. Application of tool for fuzzy multi attributive comparison of different N management strategies. In. Applications of Soft Computing in Agricultural Researches (ed.) V.P. Yakushev, H. A. Torbert, D.A. Kurtener. Agrophysical Research Institute, St. Petersburg, Russia. [Book Chapter]

Krueger, E., Kurtener, D., and Khosla, R. 2010. Application of Adaptive Neuro-Fuzzy Inference System for study of relation between Normalized Difference Vegetation Index, yield and soil color-based management zones in irrigated maize. In. Applications of Soft Computing in
Agricultural Researches. (ed.) V.P. Yakushev, H. A. Torbert, D.A. Kurtener. Agrophysical Research Institute, St. Petersburg, Russia. [Book Chapter]

Shaver, T., Khosla, R., Westfall, D.G. 2010. Evaluation of two ground-based active remote sensors for N variability determination in maize under greenhouse conditions. J. of Soil Sci. Soc. of Amer. 74:2101-2108.

Schwartz, H., Gent, D.H., Fichtner, S.M., Khosla, R., Mahaffey, L.A., Camper, M.A., and Cranshaw, W.S. 2010. Spatial and Temporal Distribution of Iris yellow spot virus and Thrips in Colorado Onion Fields. J. of Plant Health Progress.

Bausch, W., and Khosla, R. 2010. QuickBird satellite versus ground-based multispectral data for estimating nitrogen status of irrigated maize. J. of Preci Agri. 10: (6) 1-17.

Khosla, R. 2010. Precision Agriculture and Resource Management for Livelihood Security in Small Agricultural Systems. In the Proceedings of the Indian Society of Agronomy Meetings in Bangalore, India. Dec 2010.

Khosla, R. 2010. Precision Agriculture: Challenges and Opportunities in a Flat World. In the Proceedings of the 19th World Congress of Soil Science, Brisbane, Australia, August 2010.

Moshia, M.E., Khosla, R., Davis, J., and Westfall, D.G. 2010. Precision Manure Management: It matters where you put your manure. In the CD-Rom Proceedings of the 10th International Conference on Precision Agriculture, Denver, CO.

Stromberger, M.E., Khosla, R., and Shaner, D. 2010. Spatio-Temporal Analysis of Atrazine Degradation And Associate Attributes In Eastern Colorado Soils. In the CD-Rom Proceedings of the 10th International Conference on Precision Agriculture, Denver, CO. July 2010.

Shaner, D., Khosla, R., and Stromberger, M.E. 2010. Spatial and Temporal Changes in Atrazine Degradation Rates in Soil. In the CD-Rom Proceedings of the 10th International Conference on Precision Agriculture, Denver, CO. July 2010.

Shaver, T., Khosla, R., Westfall, D.G. 2010. Development Of A Nitrogen Requirement Algorithm Using Ground-based Active Remote Sensors. In Irrigated Maize. In the CD-Rom Proceedings of the 10th International Conference on Precision Agriculture, Denver, CO. July 2010.

Krueger, E.D., Kurtener, D.A., Yakishev, V.P., and Ermakov, R.N., and Khosla, R. 2010. Evaluation of Different N Management Strategies Using A Tool For Fuzzy Multi Attributive Comparison Of Alternatives. In Irrigated Maize. In the CD-Rom Proceedings of the 10th International Conference on Precision Agriculture, Denver, CO. July 2010.

Miao, Y., Qiang, C., Cui, Z., Li, F., Dao, T.H., Khosla, R., and Chen, X. 2010. Quantifying Spatial Variability of Indigenous Nitrogen Supply for Precision Nitrogen Management in North China Plain. In the CD-Rom Proceedings of the 10th International Conference on Precision Agriculture, Denver, CO.

Khosla, R. 2010. Precision Agriculture: Opportunities and Challenges in a Flat World. In the Proceedings of the Great Plains Soil Fertility Conference. Denver, CO.

Khosla, R., Shaver, T., Westfall, D.G. 2010. Nitrogen and Water Management Across Site Specific Management Zones Using Active remote Sensing. In the CD-ROM Proceedings of the Fluid Fertilizer Foundation Conference, February, Scottsdale, AZ.

Moshia, M.E., Khosla, R., Westfall, D.G., Davis, J., and Reich, R. 2010. Precision Manure Management Strategies Site Specific Management Zones for Enhancing Corn Grain Yield. In Abstracts of the Annual meetings of the American Society of Agronomy, Long Beach, CA. Nov., 1-5th.

Shaner, D., Khosla, R., and Stromberger, M. 2010. How rapidly does enhanced atrazine degradation develop? In the Abstracts of the Annual meetings of the Weed Science Society of America, Denver, CO.

Khosla, R., and Moshia, M.E. 2010. Precision Manure Management: It matters where you put your manure. In the Abstracts of the annual meetings of the Western Society of Soil Science, Las Vegas, NV, June 2010.

Khosla, R., Shaner, D., Stromberger, M., Bosley, B., and Helm, A. 2010. Spatial Distribution of Enhanced Atrazine Degradation Across North Eastern Colorado: A Survey. In the Abstracts of the Annual meetings of the Western Weed Science Society of America, Big Island, HI, March, 2010.

Bansal, R., W. S. Lee, R. Shankar, and R. Ehsani. 2010. Automated trash estimation in a citrus canopy shake and catch harvester using machine vision. ASABE Paper No. FL10-123. St. Joseph, Mich.: ASABE.

Ehsani, R., and S. Sankaran. 2010. Sensors and sensing technologies for disease detection. Citrus Industry, June, 2010, pp. 14-17. 5. Ehsani, R., S. Sankaran, and C. Dima. 2010. Growers expectations of new technologies for applications in precision horticulture (AE467). Agricultural and Biological Engineering Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida.

Jones, C. D., J. B. Jones, and W. S. Lee. 2010. Diagnosis of bacterial spot of tomato using spectral signatures. Computers and Electronics in Agriculture 74(2): 329-335.

Kumar, A., W. S. Lee, R. Ehsani, L. G. Albrigo, C. Yang, and R. L. Mangan. 2010. Citrus greening disease detection using airborne multispectral and hyperspectral imaging. 10th International Conference on Precision Agriculture. July 18-21, 2010, Hyatt Regency Tech Center, Denver CO

Lee, W. S., V. Alchanatis, C. Yang, M. Hirafuji, D. Moshou, and C. Li. 2010. Sensing technologies for precision specialty crop production. Computers and Electronics in Agriculture 74(1): 2-33.

Mishra, A., R. Ehsani, G. Albrigo and S. Sankaran. 2010. Application of hyperspectral imaging for the detection of citrus greening, Paper No. 1009998, ASABE 2010 Annual International Meeting, Pittsburg, PA, June 20-23, 2010.

Patil, R., W. S. Lee, R. Ehsani, and F. Roka. 2010. Elimination of debris using de-stemmers on a continuous citrus canopy shake and catch harvester. ASABE Paper No. 1008384. St. Joseph, Mich.: ASABE.

Sankaran, S., Ehsani, R., and E. Etxeberria. 2010. Mid-infrared spectroscopy for detection of Huanglongbing (greening) in citrus leaves, Talanta, 83, 574-581.

Sankaran, S., Mishra, A., Ehsani, R., and C. Davis. 2010. A review of advanced techniques for detecting plant diseases, Comput. Electron. Agric., 72 (1), 1-13. 3.

Sankaran, S., R. Ehsani, and C. Dima. 2010. Development of ground-based sensor system for automated agricultural vehicle to detect diseases in citrus plantations, Paper No. 304, 10th International Conference Precision Agriculture, July 18-21, 2010, Denver, CO.

Sankaran, S., and R. Ehsani. 2010. Optical methods for Huanglongbing (HLB) detection in citrus orchards, Florida Society Horticultural Society (FSHS) 2010 Annual Meeting, Paper No. C-25, June 6-8, Plantation Inn, Crystal River, FL.

Sankaran, S., and R. Ehsani. 2010. Detection of Huanglongbing (greening) in citrus plantations using mid-infrared spectroscopy, Paper No. 1009199, American Society of Agricultural and Biological Engineers (ASABE) 2010 Annual International Meeting, Pittsburg, PA, June 20-23, 2010.

Sankaran, S., R. Ehsani, and C. Dima. 2010. Development of ground-based sensor system for automated agricultural vehicle to detect diseases in citrus plantations, Paper No. 304, 10th International Conference Precision Agriculture, July 18-21, 2010, Denver, CO.

Sankaran, S., and R. Ehsani. 2010. Detection of Huanglongbing (greening) in citrus plantations using mid-infrared spectroscopy, Paper No. 1009199 (Poster), American Society of Agricultural and Biological Engineers (ASABE) 2010 Annual International Meeting, Pittsburg, PA, June 20-23, 2010.

Sankaran, S., and R. Ehsani. 2010. Optical methods for Huanglongbing (HLB) detection in citrus orchards, FSHS 2010 Annual Meeting, Paper No. C-25, June 6-8, Plantation Inn, Crystal River, FL.

Griffin, T.W.; Dobbins, C.L.; Florax, R.J.G.M.; Lowenberg-DeBoer, J.M.; Vyn, T.J. 2010. Spatial Analysis of Precision Agriculture Data: Role for Extension. J. National Assoc. Agric. Agents. Available at: http://www.nacaa.com/journal/index.php?jid=40

Lowenberg-DeBoer, J. and B. Erickson, 2010. Precision Agriculture in Africa. Georgetown Journal of International Affairs, 11(2) (2010), p. 107-116.

Murrell, T.S., and T. J. Vyn. 2010. Precision management of root zone potassium for corn: Considerations for the future. Better Crops Vol. 94 (No. 4), p. 24-25. http://www.ipni.net/ppiweb/bcrops.nsf/$webindex/7C1B2FB0205F44F3852577EB00574F8F/$file/BC+4+2010+pg+24.pdf

Erickson, Bruce J. Economics and Adoption of Precision Farming Technologies, Purdue Women in Agriculture Conference, February 2011, Jeffersonville, Indiana.


Erickson, Bruce J., Terry Griffin, and David Waits. Technology & Equipment: The Logistics of Maximizing Yield, panel discussion at GROWMARK Grower Conference, January 2011, Peoria, Illinois.

Erickson, Bruce J. Investments in Precision Agriculture and Other Farm Management Topics, Ohio State Agronomic Crops In-Service Training, January 2011, Columbus, Ohio.

Erickson, Bruce J. Adoption of Precision Agriculture, Contemporary Trends, Central Ohio Agronomy Day December 2010, Newark ,Ohio.

Erickson, Bruce J. Agronomic Input Trends, Informa Economics Fall Outlook Conference, November 2010, Memphis, Tennessee.

Erickson, Bruce J. Economics and Adoption of Precision Farming Technology, Brazilian farmers group visit to Purdue University, August 2010.

Erickson, Bruce J. Economics and Adoption of Precision Farming Technology, Argentina CREA Maria Teresa visit to Purdue University, August 2010.

Erickson, Bruce J. Practical Applications of Precision Agriculture for Todays Grower, Heartland Technology Solutions Media Field Day, June 2010, Harlan, IA

Erickson, Bruce J. Using Production Technology to Increase Food Security While Mitigating Climate Change, 2010 Rotary World Affairs Conference, March 2010.

Erickson, Bruce J. Precision Agriculture Collaboration: Agronomic, Engineering and Economics, NCERA-180 Site-Specific Management Industry/Academic Annual Meeting, Lexington, KY, January 2010.

Franzen, D., D. Long, A. Sims, J. Lamb, F. Casey et al., 2010. Evaluation of methods to determine residual soil nitrate zones across the northern Great Plains of the USA. Published on-line, November 2010 in Journal of Precision Agriculture

Franzen, D.W. 2011. Collecting and analyzing soil spatial information using kriging and inverse distance. p. 61-80 In GIS Applications in Agriculture. Vol. 2 Nutrient Management for Energy Efficiency. D.E. Clay and J.F. Shanahan, eds. CRC Press, Boca Raton, FL

Franzen, D.W., R. Ashley, G. Endres, J. Lukach, J. Staricka, and K. McKay. Revising nitrogen recommendations for wheat in response to the need for support of variable-rate nitrogen application. International Precision Ag Conference, Denver, CO, July, 2010.