Selected Journal Publications

Arnall, D.B., B.S. Tubaña, S.L. Holtz, K. Girma, and W.R. Raun. 2008. Relationship between nitrogen use efficiency and response to fertilizer in winter wheat. J. Plant Nutr. (in press)

Chung, B., K. Girma, K. Martin, B.S. Tubaña, D.B. Arnall, S. Holtz, and W.R. Raun. 2008. Determination of optimum resolution for predicting corn grain yield using sensor measurements. Archives of Agronomy and Soil Science (in press)

Tubaña, B.S., D.B. Arnall, O. Walsh, B. Chung, J.B. Solie, K. Girma, and W. R. Raun. 2008. Adjusting midseason nitrogen rate using a sensor-based optimization algorithm to increase use efficiency in corn (Zea mays L.). J. Plant Nutr. 31:1393-1419.

Tubaña, B.S., D.B. Arnall, J.B. Solie, K. Girma, and W. R. Raun. 2008. Effect of treating spatial variability in winter wheat at different resolutions. J. Plant Nutr. (in press)

Pasuquin, E., T. Lafarge, and B. S. Tubaña. 2008. Transplanting young seedlings in irrigated rice fields: early and high tiller production enhanced grain yield. Field Crop Res. 105:141-155.

Girma, K., K. Freeman, R. Teal, B. Arnall, B. Tubaña, S. Holtz and W. R. Raun. 2007. Analysis of yield variability in winter wheat (Triticum aestivum L.) due to temporal variability, and nitrogen and phosphorus nutrients. Archives of Agron. and Soil Sci. 53:435-442.

Girma, K., S. Holtz, D.B. Arnall, B. Tubaña, and W.Raun. 2007. The Magruder Plots: Untangling the puzzle. Agron. J. 99:1191-1198.

Teal, R., B. Tubaña, K. Girma, K. Freeman, B. Arnall, O. Walsh and W.R. Raun. 2006. Evaluating spectral reflectance in corn for in-season prediction of grain yield potential. Agron. J. 98:1488-1494.

George, T., R. Magbanua, D.P. Garrity, B.S. Tubaña and J. Quiton. 2002. Rapid yield loss of rice cropped successively in aerobic soil. Agron. J. 94(5): 981-989.

George, T., R. Magbanua, B. Tubaña, J. Quiton, A. Almendras, W. Khatib, F. Cox and R. Yost. 2000. Estimating buffer coefficients for the phosphorus decision support system: Preliminary comparison among field and laboratory estimates from three Asian upland soils. Comm. Soil Sci. and Plant Anal. 31:2101-2110.

Proceedings

Dotson, C., D.B. Arnall, S. Holtz, B. Tubaña, O. Walsh, B. Chung, P. Turner, K. Girma, and W.R. Raun. 2007. Precision sidedress UAN application for corn production. Proc 2007 Fluid Fertilizer Foundation Forum. Az., Feb 2007.

Arnall, D.B., B. Tubaña, W.R. Raun, O. Walsh and S. Holtz. 2006. Three alternative nitrogen management strategies for cereal grain production. 2006. In Proc. Southern Plant Nutrient Management Conference and Southern CSREES Water Quality/Nutrient Management Meeting. Olive Branch, Mississippi. Oct. 3-5, 2006.

Tubaña, B., R. Teal, K. Girma, K. Freeman, B. Arnall, O. Walsh, K. Martin and W. Raun. 2006. Corn yield potential prediction based on in-season spectral measurements. In Proc. 8^th International Conference on Precision Agriculture. Minneapolis, MN. July 23-26, 2006.

Arnall, D.B., W.R. Raun, B. Tubaña and O. Walsh. 2006. Three alternative nitrogen management strategies for cereal grain production. Pgs. 77-78. In R.C. Schwartz, R.L. Baumhardt and J.M. Bell (eds) Proc. 28^th Southern Conservation Systems Conf., Amarillo, Texas. June 26-28, 2006, USDA-ARS Conservation and Production Research Laboratory Report Np. 06-1, Bushland, TX.

Lafarge, T., B. Tubaña and E. Pasuquin. 2004. Yield advantage of hybrid rice induced by its higher control in tiller emergence. 4^th International Crop Science Congress, Brisbane, Australia. 26 Sept. - Oct. 1, 2004.

Pasuquin, E., B. Tubaña, J. Bertheloot and T. Lafarge. Impact of early transplanting on tillering and grain yield in irrigated rice. 4^th International Crop Science Congress, Brisbane, Australia. 26 Sept. – Oct. 1, 2004.

George, T., R. Magbanua, B. Tubaña, J. Quiton and S. Virmani. 2001. Beyond traditional upland rice: high yielding rice in aerobic soils. In: Proc. Asian Congress, Manila, Philippines, 24-27 April 2001.

Selected Abstracts/Conference Presentations

Tubaña B.S., J. Stevens, H. Mascagni, E. Clawson, D. Boquet, D. Harrell, J. Wang, and J. Teboh. 2008. Effect of phosphorus fertilization on early growth of corn on six alluvial soils in Louisiana. In Agronomy Abstracts. ASA, Madison, WI.

Tubaña B.S., C. Kennedy, A. Arceneaux, J. Teboh, D. Weindorf, and J. Wang. 2008. Analysis of sugarcane yield response to annual nitrogen fertilization. In ASSCT Abstract. American Society of Sugar Cane Technologist Annual Joint Meeting, Orlando, FL, June 18-20, 2008.

Arnall, D.B, B. Tubaña, K. Girma, S.L. Holtz, B. Chung, C.R. Dotson, P.L. Turner, D.E. Edmonds, B.B. England, M.C. Daft, W.R. Raun and R.K. Taylor. 2007. Evaluation of delayed Ramp Calibration Strip application for mid-season N recommendation in winter wheat. In Agronomy Abstracts. ASA, Madison, WI.

Chung, B.K., D.B. Arnall, B.S. Tubaña, K. Girma, S.L. Holtz, P.L. Turner, O.S. Walsh, C.R. Dotson, J.B. Solie and W.R. Raun. 2007. Changes in response indices as a function of time in winter wheat. In Agronomy Abstracts. ASA, Madison, WI.

England, B.B., D.B. Arnall, B. Tubaña, S.L. Holtz, C.R. Dotson, C. Daft, D.E Edmonds, and W.R. Raun. 2007. Stream vs. flat topdress application of UAN in winter wheat. In Agronomy Abstracts. ASA, Madison, WI.

Dotson C.R., D.B. Arnall, B. Tubaña, K. Girma, M.C. Daft, B.B. England, D. Edmonds, S.L. Holtz, P.L.Turner, and W.R. Raun. 2007. Effect of nitrogen fertilizer rate and placement on corn grain yield. In Agronomy Abstracts. ASA, Madison, WI.

Holtz, S.L., B.S. Tubaña, D.B. Arnall, K.W. Freeman, R.K. Teal, B. Chung, O. Walsh, P.L. Turner, K.D. Lawles, C.J. Mack, D.E. Edmonds, K. Girma and W.R. Raun. 2007. Response of corn (Zea mays L.) grain yields to variable row nitrogen fertilization. In Agronomy Abstracts. ASA, Madison, WI.

Tubaña, B.S., D.B. Arnall, K.W. Freeman, R.K. Teal, B. Chung, O. Walsh, D.E. Edmonds, S. Holtz, P. Turner, C.R. Dotson, B. England, M.C. Daft, C.J. Mack, K. Lawles, K. Girma and W.R. Raun. 2007. Corn (Zea mays L.) grain yield response to by-plant nitrogen fertilization. In Agronomy Abstracts. ASA, Madison, WI.

Turner, P.L., B.S. Tubaña, K. Girma, S.L. Holtz, K.D. Lawles, D.E. Edmonds, C.R. Dotson, B.B. England, M.C. Daft, D.B. Arnall, R.K. Taylor and W.R. Raun. 2007. Indirect measurement of crop plant height. In Agronomy Abstracts. ASA, Madison, WI.

Chung, B., B.S. Tubaña, B. Arnall, S. Holtz, O. Walsh, K. Martin, K. Desta and W. Raun. 2006. Optimum spatial scale and management resolution for corn (Zea mays L.). In Agronomy Abstracts, ASA Madison, WI.

Lafarge, T., E. Pasuquin, Z. Susanti, B. Tubaña, and C. Bueno. 2006. Achieving higher grain yield through integrated crop establishment in irrigated rice fields. Paper presented at the 2nd International Rice Congress, 9-13 Oct. 2006, New Dehli, India.

Tubaña, B., R.K. Teal, B. Arnall, K. Freeman, B. Chung, O. Walsh, K. Lawles, C. Mack and W. Raun. 2006. Adjusting mid-season nitrogen using a sensor-based optimization algorithm to increase use efficiency in corn (Zea mays L). In Agronomy Abstracts, ASA, Madison, WI.

Arnall, D.B., B. Tubaña, K. Girma, W.R. Raun, K.W. Freeman and R.K. Teal. 2006. Relationship between nitrogen use efficiency and response to fertilizer in winter wheat. In WCSS Abstract. ASA, Madison, WI.

Tubaña, B.S., J.B. Solie, M.L. Stone, J. Edwards and W.R. Raun. 2005. Effect of treating spatial variability in winter wheat at different resolutions. In Agronomy Abstracts. ASA, Madison, WI.

Raun, W.R., J.B. Solie, M.L. Stone, K.W. Freeman, K.L., Martin, R.K. Teal, B. Arnall, B. Tubaña, B. Chung, K.B. Morris, K. Girma, S. Moges and C. Mack. 2004. Increasing cereal nitrogen use efficiency using sensor based technology. AAPRESID, Rosario, Argentina.

George, T., R. Magbanua, B. Tubaña, J. Quiton and S. Virmani. 2002. Beyond traditional upland rice: High yielding rice in aerobic soils. In Abstract. Annual Scientific Conference of the Crop Science Society of the Philippines Annual Conference. Tagbilaran City, Bohol, Philippines. April 23-26, 2002.

George, T., R. Magbanua, J. Quiton, and B. Tubaña. 2002. Managing rice in the uplands for yield and profit: Overcoming the myths surrounding rice and uplands. In CSSP Abstract. Annual Scientific Conference of the Crop Science Society of the Philippines. Tagbilaran City, Bohol, Philippines. April 23-26, 2002.

Tubaña, B., R. Magbanua, E. Hondrade and T. George. 2001. Strategies for applying phosphorus fertilizer to upland rice in sloping uplands. Asian Agricultural Congress. Manila, Philippines. April 24-27, 2001.

George,T., R. Magbanua, B. Tubaña, J. Quiton, A. Almendras, W. Khatib, F. Cox, and R. Yost. 1999. Estimating buffer coefficients for the Phosphorus Decision Support System. Poster presented at the 6th International Symposium on Soil and Plant Analysis “Opportunities for the 21st Century: Expanding the Horizons for Soil, Plant and Water Analysis”. 22-26 March 1999, Brisbane, Australia.

Tubaña, B., R. Magbanua, J. Quiton and T. George. 1999. Estimating phosphorus buffer coefficient in a Philippine upland soil using short-term incubation. In CSSP Abstract. Annual Scientific Conference of the Crop Science Society of the Philippines Annual Conference. General Santos, Philippines. May 10-15, 1999.

Manoharan, V., B. Tubaña and T. George. 1999. Effect of repeated phosphorus fertilization and consecutive cropping on phosphorus buffer coefficient in two Philippine upland soils. In CSSP Abstract. Annual Scientific Conference of Crop Science Society of the Philippines Annual Conference. General Santos, Philippines. May 10-15, 1999.

Tubaña, B., S. Weidelt, and T. George. 1997. Seed phosphorus effect on the early growth of soybean under low phosphorus supply. In CSSP Abstract. Annual Scientific Conference of Crop Science Society of the Philippines Annual Conference. Baguio City, Philippines. June 1-5, 1997.

Invited Speaker/Workshop Conducted

Estimating N needs using GreenSeeker Technology. Louisiana Certified Crop Advisor Meeting, Rice Research Station in Crowley, LA, March 4, 2008. 

Adjusting midseason nitrogen rate using sensor-based optimization algorithm to improve use efficiency in corn. Environmental Technology Assessment for Agriculture Program, Agriculture and Agri-Food Canada, Ottawa, Ontario, Feb. 28 – March 1, 2007. 

Sensor-Based Nitrogen Fertilization Workshop. CIMMYT, Ciudad Obregon, Mexico. January 8-12, 2007.

Sensor-Based Nitrogen Fertilization Workshop. Stockport, South Australia. August 1-3, 2006.

Using sensor based nitrogen fertilization to improve nitrogen use efficiency of cereal crop. Women in Agriculture and Business. Stillwater, OK. March 11, 2006. 

Sensor-Based Nitrogen Fertilization Workshop. CIMMYT, El-Batan, Mexico. September 12-13, 2005.

Module on data verification and exploratory analysis. Long-Term Phosphorus Experiment Data Synthesis Workshop. IRRI, Los Baños, Philippines. Aug. 28 – Sept. 1, 2001.