Profile – Kevin F. Bronson

, , ,


Kevin F. Bronson

Job Title:

Supervisory Research Soil Scientist


Phone Number:



USDA-ARS, Fort Collins, CO, 1989-1992
International Rice Research Institute Philippines, 1992-1994, 1995-1998
CSIRO, Perth, Australia, 1994-1995
Texas A&M University AgriLife Research, Lubbock, Texas, 1998-2010
USDA-ARS, Maricopa, AZ, 2010-Present

Research Areas:

  • Nitrogen management
  • Irrigation by N management
  • Proximal sensing for N management
  • Export of N fertilizer
  • Crop N uptake
  • N use efficiency
  • Nitrate leaching
  • Nitrous oxide emissions

Current N-related Projects:

  • Improving Nitrogen Fertilizer Management and Fate of Nitrogen in Subsurface Drip-Irrigated Cotton


Bronson, K.F.*, J.T. Touchton, A.E. Hiltbold, and L.L. Hendrickson. 1989. Control of ammonia volatilization with N-(n-butyl) thiophosphoric triamide in loamy sands. Commun. Soil Sci. Plant Anal. 20:1439-1451.

Bronson, K.F.*, J.T. Touchton, and R.D. Hauck. 1989. Decomposition rate of dicyandiamide and nitrification inhibition. Commun. Soil Sci. Plant Anal. 20:2067-2078.

Bronson, K.F.*, J.T. Touchton, C.G. Cummins, and L.L. Hendrickson. 1990. Use of the urease inhibitor N-(n- butyl) thiophosphoric triamide in corn production on a loamy sand. J. Fert. Issues 7:31-34.

Bronson, K.F.*, J.T. Touchton, R.D. Hauck, and K.R. Kelley. 1991. Nitrogen-15 recovery in winter wheat as affected by application timing and dicyandiamide. Soil Sci. Soc. Am. J. 55:130-135.

Mosier, A., D. Schimel, D. Valentine, K. Bronson, and W. Parton. 1991. Methane and nitrous oxide fluxes in native, fertilized and cultivated grasslands. Nature. 350:330-332.

Bronson, K.F.* and A.R. Mosier. 1991. Effect of encapsulated calcium carbide on dinitrogen, nitrous oxide, methane, and carbon dioxide emissions in flooded rice. Biol. Fertil. Soils 11:116-120.

Bronson, K.F.*, A.R. Mosier, and S.R. Bishnoi. 1992. Nitrous oxide emissions in irrigated corn as affected by nitrification inhibitors. Soil Sci. Soc. Am. J. 56: 161- 165.

Lindau, C.W., P.K. Bollich, R.D. Delaune, A.R. Mosier, and K.F. Bronson. 1993. Methane mitigation in flooded Louisiana rice fields. Biol. Fertil. Soils. 15:174-178.

Bronson, K.F.* and A.R. Mosier. 1994. Suppression of methane oxidation in soil by nitrogen fertilizers, nitrification inhibitors, and urease inhibitors. Biol. Fertil. Soils. 17: 263-268.

Bronson, K.F.*, H.U. Neue, U. Singh, and E.B. Abao, Jr. 1997. Automated chamber measurements of CH4 and N2O in a flooded rice soil. I. Effect of residue, nitrogen, and water management. Soil Sci. Soc. Am. J. 61: 981-987.

Bronson, K.F.*, U. Singh, H.U. Neue, and E.B. Abao, Jr. 1997. Automated chamber measurements of CH4 and N2O in a flooded rice soil. II. Fallow period emissions. Soil Sci. Soc. Am. J. 61: 988-993.

Bronson, K.F.* and I.R.P. Fillery. 1998. Fate of Nitrogen-15 labelled urea applied to wheat on a water-logged texture-contrast soil. Nut Cyc. in Agroecosystems. 51 (2):175-183.

Bronson, K.F.*, G.P. Sparling, and I.R.P. Fillery. 1999. Short-term N dynamics following
application of 15N-labeled urine to a sandy soil in summer. Soil Biol. Biochem. 31

Adhikari, C., K.F. Bronson*, G.M. Panuallah, A.P. Regmi, P.K. Saha, A. Dobermann, D.C. Olk,
P.R. Hobbs, and E. Pasuquin. 1999. On-farm soil N supply and N nutrition in the rice-wheat system of Nepal and Bangladesh. Field Crops Res. 64:273-286.

Bronson, K.F.*, F. Hussain, E. Pasuquin, and J.K. Ladha. 2000. Use of 15N-labeled soil in
measuring N fertilizer recovery-efficiency in transplanted rice. Soil Sci. Soc. Am. J.

Hussain, F., K.F. Bronson, Yadvinder-Singh, Bijay-Singh, and S. Peng. 2000. Use of well-fertilized reference plots for chlorophyll meter-based N management in irrigated rice. Agron. J. 92:875-879.
Abao, E.B., Jr., K.F. Bronson, R. Wassmann, and U. Singh. 2000. Simultaneous records of methane and nitrous oxide emissions in rice-based cropping systems under rainfed conditions. Nutr. Cycling Agroecosys. 58: 131-139.

Aulakh, M.S., T. S. Khera, J. W. Doran, and K.F. Bronson*. 2001. Managing crop residue
with green manure, urea, and tillage in a rice-wheat rotatation. Soil Sci. Soc. Am. J. 65: 820-827.

Bronson, K.F., A.B. Onken, J.W. Keeling, J.D. Booker, and H.A. Torbert. 2001.
Nitrogen response in cotton as affected by tillage system and irrigation level. Soil Sci. Soc. Am. J. 65: 1153-1163.

Bronson, K.F.*, E.B. Abao, Jr, Bijay-Singh, Y. Singh, and G.M. Panuallah 2001. Predicting
potential anaerobic nitrogen mineralization in the rice-rice and rice-wheat soils of Asia. Commun. Soil Sci. Plant Anal. 32 (15&16): 2411-2424.

Bijay-Singh, K.F. Bronson*, Yadvinder-Singh, T.S. Khera, and E. Pasuquin. 2001. Nitrogen-
15 balance as affected by rice straw management in a rice-wheat rotation in Northwest India. Nutr. Cycling Agroecosys. 59: 227-237.

Aulakh, M.S., T. S. Khera, J. W. Doran, and K.F. Bronson. 2001. Denitrification, N2O and CO2 fluxes in rice-wheat cropping system as affected by crop residues, fertilizer N and legume green manure. Biol. Fertil. Soils 34:375-389.

Misra, B., P.K. Sharma, and K.F. Bronson. 2001. Kinetics of wheat straw decomposition and nitrogen mineralization in rice field soil. J. Indian Society of Soil Sci. 49:249-254.

Misra, B., P.K. Sharma, and K.F. Bronson. 2001. Decomposition of rice straw and mineralization of carbon, nitrogen, phosphorus and potassium in wheat field soil in Western Uttar Pradesh. J .Indian Society of Soil Sci. 49:419-424.

Hong Li., R.J. Lascano, J. Booker, L. T. Wilson, K.F. Bronson, and E. Segarra. 2002. State state-space description of underlying field heterogeneity on water and nitrogen use in cotton. Soil Sci. Soc. Am. J. 66:585-595.

Machado, S., E.D. Bynum, Jr., T.L. Archer, R.J. Lascano, L.T. Wilson, J. Bordovosky, K.F. Bronson, D.M. Nesmith, and W. Xu. 2002. Spatial and temporal variability of corn growth and grain yield. Crop Sci. 42:1564-1576.

Bijay-Singh, Yadvinder-Singh, J.K. Ladha, K.F. Bronson, V. Balasubramanian, Jagdeep-Singh, and C.S. Khind. 2002. Chlorophyll meter and leaf color chart based nitrogen management for rice and wheat in northwestern India. Agron. J. 94:821-829.

Chua, T.T., K. F. Bronson*, J.D. Booker, J.W. Keeling, A.R. Mosier, J.P. Bordovsky, R.J.
Lascano, C.J. Green, and E. Segarra. 2003. In-season nitrogen status sensing in irrigated cotton: I. Yield and nitrogen-15 recovery. Soil Sci. Soc. Am. J. 67:1428-1438.

Bronson, K.F.*, T.T. Chua, J.D. Booker, J.W. Keeling, and R.J. Lascano. 2003. In-season
nitrogen status sensing in irrigated cotton: II. Leaf nitrogen and biomass. Soil Sci. Soc. Am. J. 67:1439-1448.

Bronson, K.F*., T.M. Zobeck, T. T. Chua, R.S. Van Pelt, and V. Acosta-Martinez. 2004. Carbon and nitrogen pools of Southern High Plains grassland and cultivated soils. Soil Sci. Soc. Am. J. 68:1695-1704.

Bronson, K.F.*, J.D. Booker, J.W. Keeling, R.K. Boman, T.A. Wheeler, R.J. Lascano, R.L. Nichols. 2005. Cotton canopy reflectance at landscape scale as affected by nitrogen fertilization. Agron. J. 97: 654-660.

Bronson, K.F.*, J. D. Booker, J.P. Bordovsky, J. W. Keeling, T.A. Wheeler, R.K. Boman, M.N.
Parajulee, E. Segarra, and R.L. Nichols. 2006. Site-specific irrigation and nitrogen management for cotton production in the Southern High Plains. Agron. J. 98:212-219.

Booker, J.D., K.F. Bronson*, C.L. Trostle, J.W. Keeling, and A. Malapati. 2007. Nitrogen and
phosphorus fertilizer and residual response in cotton-sorghum and cotton-cotton sequences. Agron. J. 99:607-613.

Scanlon, B.R., R.C. Reddy, and K.F. Bronson. 2008. Impacts of Land Use Change on Nitrogen Cycling Archived in Semiarid Unsaturated Zone Nitrate Profiles, Southern High Plains, USA. Environ. Sci. Tech. 42 (20):7566-7572.

Velandia, M., R.M. Rejesus, K. Bronson, and E. Segarra. 2008. Economics of Management Zone Delineation in Cotton Precision Agriculture. J. Cotton Science. 12:210-227.

Yabaji, Rajkumari, J.W. Nusz, K. F. Bronson*, A. Malapati, J. D. Booker, R.L. Nichols, and T. L. Thompson. 2009. Nitrogen management for subsurface drip irrigated cotton: Ammonium thiosufalte, timing, and canopy reflectance. Soil Sci. Soc. Am. J. 73:589-597.

Bronson, K.F.*, A. Malapati, J.D. Booker, B.R. Scanlon, W. H. Hudnall, and A.M. Schubert. 2009.
Residual soil nitrate in irrigated Southern High Plains cotton fields and Ogallala groundwater nitrate. J. Soil Water Conserv. 64: 98-104.

Wheeler, T.A., J.W. Keeling, J.P. Bordovsky, J. Everitt, K.F. Bronson, R.K. Boman, B.G. Mullinix, Jr. 2009. Effect of irrigation and nitrogen rate on three cotton (Gossypium hirsutum L.) cultivars in a root-knot nematode (Meloidogyne incognita) infested field. J. Cotton Sci. 13:56-66.

Bronson, K.F.*, Adi Malapati, P.C. Scharf, and R.L. Nichols. 2011. Canopy Reflectance-based Nitrogen Management Strategies for Subsurface Drip Irrigated Cotton in the Texas High Plains. Agron J. 103:422-430.

Tamang, P.L. K. F. Bronson*, A. Malapati, and R. Schwartz. 2011. Nitrogen Fertilizer Requirements for Ethanol Production from Sweet and Photoperiod Sensitive Sorghums in the Southern High Plains. Agron. J. 103: 431-440.

Bronson, K.F*., T. A. Wheeler, C.M. Brown, R.K. Taylor, and E. M. Barnes. 2012. Use of nitrogen calibration ramps and canopy reflectance on farmers’ irrigated cotton fields. Soil Sci. Soc. Am. J. 76:1060-1067.

Oliveira, L.F., P.C. Scharf, E.D. Vories, S.T. Drummond, D. Dunn, W. G. Stevens, K.F. Bronson, N.R. Benson, V.C. Hubbard, and A.S. Jones. 2012. Calibrating canopy reflectance sensors to predict optimal mid-season nitrogen rate for cotton. Soil Sci. Soc. Am J. 77:173-183.

Main, C.L., L. T. Barber, R. K. Boman, K. Chapman, D. M. Dodds, S. Duncan, K. L. Edmisten, P. Horn,
M. A. Jones, G. D. Morgan, E. R. Norton, S. Osborne, J. R.Whitaker, R. L. Nichols, and K.F. Bronson. 2013. Effects of nitrogen and planting seed size on cotton growth, development and
yield. Agron J. 105:1853-1859.

Wang, G., K. F. Bronson, K.R. Thorp, J.Mon, and M. Badaruddin. 2014. Multiple leaf measurements improve effectiveness of chlorophyll meter for durum wheat nitrogen management. Crop Sci. 54:817-826.

Liang, Z., K.F. Bronson, K.R. Thorp, J. Mon, M. Badaruddin, and G. Wang. 2014. Cultivar and nitrogen fertilizer rate affect yield and nitrogen use efficiency in irrigated durum wheat. Crop Sci. 54:1175-1183.

Liu, J., K.F. Bronson, K.R. Thorp, J. Mon, M. Badaruddin, W.B. McCloskey, R.T. Ray, Q. Chu, and G. Wang. 2014. Lesquerella seed and oil yield response to split-applied N fertilizer. Ind. Crops Prod. 60:273-279.

Muharam, F.M., K.F. Bronson*, S.J. Maas, and G.L. Ritchie. 2014. Inter-relationships of cotton plant height, canopy width, ground cover and plant nitrogen status indicators. Field Crops Res. 169:58-69.

Muharam, F.M., S.J. Maas, K.F. Bronson, and T. Delahunty. 2015. Estimation of cotton nitrogen nutrition status using leaf greenness and ground cover information. Remote Sens. 7:7007-7028.

Mon, J., K.F. Bronson*, D. J. Hunsaker, K.R. Thorp, J.W. White, and A.N. French. 2016. Interactive Effects of Nitrogen Fertilization and Irrigation on Grain Yield, Canopy Temperature, and Nitrogen Use Efficiency in Overhead Sprinkler-Irrigated Durum Wheat. Field Crops Res. 191:54-65.

Thorp, K.R., G. Wang, K.F. Bronson, M. Badaruddin, and J. Mon. 2017. Hyperspectral data mining to identify relevant canopy spectral features for estimating durum wheat growth, nitrogen status, and yield. Computers Electronic Agric. 136:1-12.

Zerihun, D., C.A. Sanchez, J. Subramanian, M. Badaruddin, and K.F. Bronson. 2017. Fertigation uniformity under sprinkler irrigation: evaluation and analysis. J. Irrig. Drain. Eng. 6: 1-13.

Bronson, K.F., J.W. White, D.J. Hunsaker, M.M. Conley, D.J. Hunsaker, K.R. Thorp, A.N. French, B.E. Mackey, and K.H. Holland. 2017. Active Optical Sensors in Irrigated Durum Wheat: Nitrogen and Water Effects. Agron. J. 109: 1-12.