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United States Department of Agriculture

Agricultural Research Service

DAN B. JAYNES

Soil Scientist

 

 

Education

1970‑74

Monmouth College, Monmouth, IL; major, Physics; B.A. 1974

1970‑74

1975-78

University of Wisconsin, Madison; major, Soil Science; M.S. 1978

1975-78

1979-83

The Pennsylvania State University; major, Agronomy; Ph.D. 1983

1979-83

 

Professional Experience

1978-79, Project Specialist, Small Scale Waste Management Project, University of Wisconsin, Madison, WI

1983-90, Soil Scientist, U.S. Water Conservation Laboratory, Phoenix, AZ

1990-1995, Soil Scientist, USDA-ARS, National Soil Tilth Laboratory, Ames, IA

1995-2005, Research Leader, National Soil Tilth Laboratory, Ames, IA

2005-2009, Soil Scientist, Soil and Water Quality Unit, National Soil Tilth Laboratory, Ames, IA

2009-present, Research Soil Scientist, National Laboratory for Agriculture and the Environment, Ames, IA

 

Current Research Interests

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Impact of nitrogen fertilizer management on water quality and crop yield

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Use of cover crops to reduce nitrate contamination of surface waters

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Efficacy of woodchip bioreactors for removing nitrate from tile drainage

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Using drainage water management (controlled drainage) to reduce nutrient losses in tile drainage

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Re-saturating riparian buffers to remove nitrate from tile drainage

 

Publications

 

Selected Reprints by Subject Area

 

Drainage Water Management (a.k.a. Controlled Drainage)

Jaynes, D.B. 2012. Changes in yield and nitrate losses from using drainage water management in Central Iowa, USA. J. Soil and Water Conservation 67:485-494.  (pdf)

Ma, L., Malone, R.W., Heilman, P., Jaynes, D.B., Ahuja, L.R., Saseendran, S.A., Kanwar, R.S., Ascough II, J.C. 2007. RZWQM simulated effects of crop rotation, tillage, and controlled drainage on crop yield and nitrate-N loss in drain flow. Geoderma 140(3):260-271. PDF

Thorp, K.R., Jaynes, D.B., Malone, R.W.  Simulating the long-term performance of drainage water management across the Midwestern United States. Trans. ASABE. 51(3):961-976. 2008. PDF

 

Bioreactors

Greenan, C., Moorman, T.B., Parkin, T.B., Kaspar, T.C., Jaynes, D.B. Denitrification in wood chip bioreactors at different water flows. J. Environ. Qual. 38:1664-1671. 2009. PDF

Greenan, C.M., Moorman, T.B., Kaspar, T.C., Parkin, T.B., and Jaynes, D.B.  Comparing carbon substrates for denitrification of subsurface drainage water. J. Environ. Qual. 35:824-829. 2006. (PDF)

Jaynes, D.B., Kaspar, T.C., Moorman, T.B., and Parkin, T.B.  In situ bioreactors and deep drain-pipe installation to reduce nitrate losses in artificially drained fields. J. Environ. Qual. 37:429-436. 2008. PDF

Moorman, T.B., Parkin, T.B., Kaspar, T.C., Jaynes, D.B. Denitrification activity and wood loss over nine years in a wood chip bioreactor for treatment of nitrate in drainage water. Ecol. Eng. 36:1567-1574. 2010.

Schipper, Louis A., Robertson, Will D., Gold, Arthur J., Jaynes, Dan B., Cameron, Stewart C. Denitrifying bioreactors — An approach for reducing nitrate loads to receiving waters. Ecological Engineering 36:1532-1543, 2010. pdf

Cover Crops on Drained Landscapes

Kaspar, T.C., Jaynes, D.B., Parkin, T.B., and Moorman, T.B. Rye cover crop and gamagrass strip effects on NO3 concentration and load in tile drainage. J. Environ. Qual. 36(5):1503-1511. 2007. PDF

Kaspar, T.C., Jaynes, D.B., Parkin, T.B., Moorman, T.B., and Singer. J.W. Effectiveness of oat and rye cover crops in reducing nitrate losses in drainage water. Agricultural Water Management. 110: 25– 33. 2012. (PDF)

Kaspar, T.C., Parkin, T.B., Jaynes, D.B., Cambardella, C.A., Meek, D.W., and Jung, Y.S. Examining changes in soil organic carbon with oat and rye cover crops using terrain covariates. Soil Sci. Soc. Am. J. 70:1168-1177. 2006. (PDF)

Li, L., Malone, R.W., Ma, L., Kaspar, T.C., Jaynes, D.B., Saseendran, S.A., Thorp, K.R., Yu, Q., Ahuja, L.R. Winter cover crop effects on nitrate leaching in subsurface drainage as simulated by RZWQM-DSSAT. Trans. ASABE. 51:1575-1583. 2008. (PDF)

Singer, J.W., R.W. Malone, D.B. Jaynes, and L. Ma. 2011 Cover crop effects on nitrogen load in tile drainage from Walnut Creek Iowa using Root Zone Water Quality Model. Agric. Water Manag. 98:1622-1628.

 

Agchemicals and Tile Drainage

Bakhsh, A., Kanwar, R.S., Jaynes, D.B., Colvin, T.S., and Ahuja, L.R.  Prediction of NO3-N losses with subsurface drainage from manured and UAN-fertilized plots using GLEAMS. Trans. ASAE. 43(1):69-77. 2000. pdf

Cambardella, C.A., Moorman, T.B., Jaynes, D.B., Hatfield, J.L., Parkin, T.B., Simpkins, W.W., and Karlen, D.L. Water quality in Walnut Creek Watershed: nitrate-nitrogen in soils, subsurface drainage water, and shallow groundwater. J. Environ. Qual. 28(1):25-34. 1999. (PDF)

Davidson, Eric A., Mark B. David, James N. Galloway, Christine L. Goodale, Richard Haeuber, John A. Harrison, Robert W. Howarth, Dan B. Jaynes, R. Richard Lowrance, B. Thomas Nolan, Jennifer L. Peel, Robert W. Pinder, Ellen Porter, Clifford S. Snyder, Alan R. Townsend, and Mary H. Ward.  2012. Excess Nitrogen in the U.S. Environment: Trends, Risks, and Solutions. Issues in Ecology No. 15. Ecological Society of America, Washington DC. pdf

Dinnes, D.L., Karlen, D.L., Jaynes, D.B., Kaspar, T.C., Hatfield, J.L., Colvin, T.C., and Cambardella, C.A. Nitrogen management strategies to reduce nitrate leaching in tile-drained Midwestern soils. Agron. J. 95:153-171. 2002. (PDF)

Hatfield, J.L., Jaynes, D.B., Burkart, M.R., Cambardella, C.A., Moorman, T.B., Prueger, J.H., and Smith, M.A. Water quality in Walnut Creek Watershed: watershed setting and farming practices. J. Environ. Qual. 28:11-24. 1999.

Jaynes, D.B., Hatfield, J.L., and Meek, D.W. Water quality in Walnut Creek Watershed: herbicides and nitrate in surface waters. J. Environ. Qual. 28(1):45-59. 1999.

Kladivko, E.J., Frankenberger, J.R., Jaynes, D.B., Meek, D.W., Jenkinson, B.J., and Fausey, N.R. Nitrate leaching to subsurface drains as affected by drain spacing and changes in crop production system. J. Environ. Qual. 33:1803-1813. 2004. (PDF)

Moorman, T.B., Jaynes, D.B., Cambardella, C.A., Hatfield, J.L., Pfeiffer, R.L., and Morrow, A.J. Water quality in Walnut Creek Watershed: herbicides in soils, subsurface drainage, and groundwater. J. Environ. Qual. 28(1):35-45. 1999. PDF

 

Modeling Tile Drained Landscapes

Chaplot, V., Saleh, A., and Jaynes, D.B. Effect of the accuracy of spatial rainfall information on the modeling of water, sediment, and NO3-N loads at the watershed level. J. Hydrol. 312(1-4):223-234. 2005. PDF

Du, B., Arnold, J.G., Saleh, A., and Jaynes, D.B. Development and application of SWAT to landscapes with tiles and potholes. Trans ASAE 48:1121-1133. 2005.  (PDF)

Du, B., Saleh, A., Jaynes, D.B., and Arnold, J.G. Evaluation of SWAT in simulating nitrate nitrogen and atrazine fates in a watershed with tiles and potholes. Trans. ASABE. 49(4):949-959. 2006. PDF

Farahbakhshazad, N., Dinnes, D.L., Li, C., Jaynes, D.B., and Salas, W. Modeling biochemical impacts of alternative management practices for a row-crop field in Iowa. Agriculture, Ecosys. Environ. 123(1-3):30-48. 2008. (PDF)

Gaur, A., Horton, R., Jaynes, D.B., and Baker, J.L. Measured and predicted solute transport in a tile drained field. Soil Sci. Soc. Am. J. 70:872-881. 2006. (PDF)

Gowda, P., Mulla, D.J., Jaynes, D.B. Simulated long-term nitrogen losses for a Midwestern agricultural watershed in the United States. Agric. Water Management. 95:616-624. 2008. (PDF)

Li, C., Farahbakhshazad, N., Jaynes, D.B., Dinnes, D.L., Salas, W., and Mclaughlin, D. Modeling nitrate leaching with a biogeochemical model modified based on observations in a row-crop field in Iowa. Ecological Modeling. 196:116-130. 2006. (PDF)

Ma, L., Malone, R.W., Jaynes, D.B., Thorp, K.R., Ahuja, L.R. Simulated effects of nitrogen management and soil microbes on soil nitrogen balance and crop production. Soil Sci. Soc. Am. J. 72:1594-1603. 2008. (PDF)

Saleh, A., Osei, E., Jaynes, D.B., Du, B., and Arnold, J.G. Economic and environmental impacts of LSNT and cover crops for nitrate-nitrogen reduction in Walnut Creek Watershed, Iowa, using FEM and enhanced SWAT models. Trans. ASABE. 50(4):1251-1259. 2007. (PDF)

Thorp, K.R., Jaynes, D.B., and Malone, R.W. Simulating long-term effects of nitrogen fertilizer application rates on corn yield and nitrogen dynamics. Trans. ASABE 50(4):1287-1303. 2007. (PDF)

Thorp, K.R., Youssef, M.A., Jaynes, D.B., Malone, R.W., and Ma. L. DRAINMOD-N II: Evaluated for an agricultural system in Iowa and compared to RZWQM-DSSAT. Trans. ASABE. 52(5):1557-1573. 2009. (PDF)

Tomer, M.D., Meek, D.W., Jaynes, D.B., and Hatfield, J.L. Evaluation of nitrate nitrogen fluxes from a tile-drained watershed in central Iowa. J. Environ. Qual. 32:642-653. 2003.

Soil and Yield Variability

Bakhsh, A., Colvin, T.S., Jaynes, D.B., Kanwar, R.S., and Tim, U.S. Using soil attributes and GIS for interpretation of spatial variability in yield. Trans. ASAE. 43(4):819-828. 2000. pdf

Bakhsh, A., Jaynes, D.B., Colvin, T. S., and Kanwar, R.S. Spatio-temporal analysis of yield variability for a corn-soybean field in Iowa. Trans. ASAE. 43(1):31-38. 2000. PDF

Brevik, E.C., Fenton, T.E., and Jaynes, D.B. Evaluation of the accuracy of a central Iowa soil survey and implications for precision soil management. Precision Agriculture. 4:331-342. 2003.

Colvin, T.S., Jaynes, D.B., Karlen, D.L., Laird, D.A., and Ambuel, J.R. Yield variability within a central Iowa field. Trans. ASAE 40:883-889. 1997. pdf

Hunsaker, D.J., Bucks, D.A., and Jaynes, D.B. Irrigation uniformity of level basins as influenced by variations in soil water content and surface elevation. Agric. Water Mgmt. 19:325-344. 1991. (PDF)

Jaynes, D.B. and Hunsaker, D.J. Spatial and temporal variability of water content and infiltration on a flood irrigated field. Trans. ASAE. 32(4):1229-1238. 1989. (pdf)

Jaynes, D.B., Novak, J. M., Moorman, T. B., and Cambardella, C.A. Estimating herbicide partition coefficients from electromagnetic induction measurements. J. Environ. Qual. 24:36-41. 1995. (PDF)

Karlen, D.L., Dinnes, D.L., Jaynes, D.B., Hurburgh, C.R., Cambardella, C.A., Colvin, T.S., Rippke, G.R. Corn response to late-spring nitrogen management in the Walnut Creek watershed. Agronomy Journal. 97:1054-1061. 2005. (PDF)

Kaspar, T.C., Colvin, T.S., Jaynes, D.B., Karlen, D.L., James, D.E., and Meek, D.W. Relationship between six years of corn yields and terrain attributes. Precision Agriculture. 4:87-101. 2003.

Kaspar, T.C., Pulido, D. J., Fenton, T.E., Colvin, T.S., Karlen, D.L., Jaynes, D.B., and Meek, D.W. Relationship of corn and soybean yield to soil and terrain properties. Agron. J. 96:700-709. 2004. (PDF)

Malone, R.W., Jaynes D.B., Ma, L., Nolan, T.B., Meek, D.W., Karlen, D.L. Soil-test N recommendations augmented with PEST optimized RXWQM simulations. J. Environ. Qual., 39:1711-1723. 2010. PDF

Martens, D.A., Jaynes, D.B., Colvin, T.S., Kaspar, T.C., and Karlen, D.L. Soil organic nitrogen enrichment following soybean in an Iowa corn-soybean rotation. Soil Sci. Soc. Am. J. 70:382-392. 2006. PDF

Schumacher, J.A., Venteris, E.R., McCarty, G.W., Ritchie, J.C., Kaspar, T.C., Colvin, T.S., Jaynes, D.B., Karlen, D.L., Fenton, T.E., Schumacher, T.E., Lindstrom, M.J. Identifying spatial patterns of erosion for use in precision conservation. J. Soil Water Cons. 60(6):355-362. 2005.

Nitrogen Management

Bakhsh, A., Kanwar, R., Jaynes, D.B., Colvin, T.S., and Ahuja, L.R. Modeling precision agriculture for better crop productivity and environmental quality. Asian Association for Agricultural Engineering. 14(4):235-243. 2005.

Bakhsh, A., Kanwar, R.S., Jaynes, D.B., Colvin, T. S., and Ahuja, L. R. Simulating effects of variable nitrogen application rates on corn yields and NO3-N losses in subsurface drain water. Trans. ASAE. 44(2):269-276. 2001. pdf

Jaynes, D.B. Confidence bands for measured economically optimal nitrogen rates. J. Prec Ag. 12:196-213. 2011. PDF

Jaynes, D.B. and Colvin, T.S. Corn yield and nitrate loss in subsurface drainage from mid-season N fertilizer application. Agron. J. 98:1479-1487. 2006. PDF

Jaynes, D.B., Colvin, T.S., Karlen, D.L., Cambardella, C.A., and Meek, D.W. Nitrate loss in subsurface drainage as affected by nitrogen fertilizer rate. J. Environ. Qual. 30:1305-1314. 2001. (PDF)

Jaynes, D.B., Colvin, T.S., and Kaspar, T.C. Identifying potential soybean management zones from multi-year yield data. Computers and Electronics in Agriculture 46:309-327. 2005. PDF

Jaynes, D.B., Dinnes, D.L., Meek, D.W., Karlen, D.L., Cambardella, C.A., and Colvin, T.S. Using the late spring nitrate test to reduce nitrate loss within a watershed. J. Environ. Qual. 33:669-677. 2004. (PDF)

Jaynes, D.B., Kaspar, T. C., Colvin, T.S., and James, D.E. Cluster analysis of spatiotemporal corn yield patterns in an Iowa field. Agron. J. 95:574-586. 2003.

Jaynes, D.B., Kaspar, T.C., Colvin, T. Economically optimal N rates of corn management zones delineated from soil and terrain attributes. Agronomy Journal. 103:1026-1035. 2011. PDF

Water and Solute Transport in Soils

Al-Jabri, S.A., Horton, R., and Jaynes, D.B. A point-source method for rapid simultaneous estimation of soil hydraulic and chemical transport properties. Soil Sci. Soc. Am. J. 66:12-18. 2002. PDF

Al-Jabri, S.A., Horton, R., Jaynes, D.B., and Gaur, A. Field determination of soil hydraulic and chemical transport properties. Soil Sci. 167(6):353-368. 2002

Al-Jabri, S.A., Lee, J., Gaur, A., Horton, R., and Jaynes, D.B. A dripper-TDR method for in situ determination of hydraulic conductivity and chemical transport properties of surface soils. Advances in Water Resour. 29(2):239-249. 2006.

Casey, F. X. M., Jaynes, D.B., Horton, R., and Logsdon, S.D. Comparing field methods that estimate mobile/immobile model parameters. Soil Sci. Soc. Am. J. 63(4): 800-806. 1999.

Gaur, A., Horton, R., Jaynes, D.B., Lee, J., and Al-Jabri, S.A. Using surface time domain reflectometry measurements to estimate subsurface chemical movement. Vadose Journal. 2:539-543. 2003.

Gaur, A., Jaynes, D.B., Horton, R., and Ochsner, T.E. Surface and subsurface solute transport properties at row and inter-row positions. Soil Sci. 172(6):419-431. 2007. (PDF)

Heitman, J.L., Gaur, A., Horton, R., Jaynes, D.B., and Kaspar, T.C. Field measurement of soil surface chemical transport properties for comparison of management zones. Soil Sci. Soc. Am. J. 71(2):529-536. 2007. PDF

Jaynes, D.B., Ahmed, S. I., Kung, K.-J.S., and Kanwar, R.S. Temporal dynamics of preferential flow to a subsurface drain. Soil Sci. Soc. Am. J. 65:1368-1376. 2001. (PDF)

Jaynes, D.B., Rice, R.C., and Hunsaker, D. J. Solute transport during chemigation of a level basin. Trans. ASAE. 35(6):1809-1815. 1992. (PDF)

Kung, K., Kladivko, E., Helling, C.S., Gish, T.J., Steenhuis, T.S., and Jaynes, D.B. Quantifying pore size spectrum of macropore-type preferential pathways under transient flow. Vadose Zone J. 5:978-989. 2006. (PDF)

Kung, K.S., Hanke, M., Helling, C.S., Kladivko, E.J., Gish, T.J., Steenhuis, T.S., Jaynes, D.B. Quantifying pore size spectrum of macropore-type preferential pathways. Soil Science Society of America Journal, 69:1196-1208. 2005. (PDF)

Lee, J., Horton, R., and Jaynes, D.B. A time domain reflectometry method to measure immobile water content and mass exchange coefficient. Soil Sci. Soc. Am. J. 64:1911-1917. 2000

Lee, J., Horton, R., and Jaynes, D.B. The feasibility of shallow time domain reflectometry probes to describe solute transport through undisturbed soil cores. Soil Sci. Soc. Am. J. 66:53-57. 2002. (PDF)

Lee, J., Horton, R., Noborio, K., and Jaynes, D.B. Characterization of preferential flow in undisturbed, structured soil columns using a vertical TDR probe. Journal of Contaminant Hydrology. 51:131-144. 2001. PDF

Lee, J., Jaynes, D.B., and Horton, R. Evaluation of a simple method for estimating solute transport parameters: Laboratory studies. Soil Sci. Soc. Am. J. 64(2): 492-498. 2000.

Rice, R.C., Bowman, R.S., and Jaynes, D.B. Percolation of water below an irrigated field. Soil Soil Sci. Soc. Am. J. 50:855-859. (PDF)

Miscellaneous

Bouwer, H., Dedrick, A.R., and Jaynes, D.B. Irrigation management for ground water quality protection. Irrig. Drain. Sys. 4:375-383. 1990. PDF

Brevik, E., Fenton, R., and Jaynes, D.B. The use of soil electrical conductivity to investigate soil homogeneity in Story County, Iowa, USA. Soil Horizons. doi: 10.2136/sh12-04-0013. 2012.

Hunsaker, D.J., Bucks, D.A., and Jaynes, D.B. Irrigation uniformity of level basins as influenced by variations in soil water content and surface elevation. Agric. Water Mgmt. 19:325-344. 1991. (PDF)

Jaynes, D.B. Comparison of soil-water hysteresis models. J. Hydrol. 75:287-299. 1984. PDF

Jaynes, D.B. Simple model of border irrigation. J. Irrig. Drain. Eng. 11(2):172-184. 1986. PDF

Jaynes, D.B. and Clemmens, A.J. Accounting for spatially variable infiltration in border irrigation models. Water Resour. Res. 22(8):1257-1262. 1986. PDF

Jaynes, D.B. and James, D.E. The Extent of Farm Drainage in the United States. p.50. In Final Program and Abstracts, Soil and Water Conserv. Soc. 2007 Internat. Conf., 21-25 Jul. 2007, Tampa, FL. pdf

Jaynes, D.B. and Tyler, E.J. Comparison of one-step out¬flow laboratory method to an in situ method for measuring hydraulic conductivity. Soil Sci. Soc. Am. J. 44:903-907. 1980. PDF

Malone, R.W., Meek, D.W., Ma, L., Jaynes, D.B., Nolan, B.T., and Karlen, D.L. 2011. Quality assurance of weather data for agricultural system model input: A case study using the Walnut Creek watershed in central Iowa. In L.R. Ahuja and L. Ma (ed.) Methods of introducing system models into agricultural research. Advances in Agricultural Systems Modeling Series 2. ASA, CSSA, SSSA, Madison, WI.

Nolan, B.T., Malone, R.W., Ma, L., Green, C.T., Fienen, M.N., and Jaynes. D.B. 2011. Inverse modeling with RZWQM2 to predict water quality.  In L.R. Ahuja and L. Ma (ed.) Methods of introducing system models into agricultural research. Advances in Agricultural Systems Modeling Series 2. ASA, CSSA, SSSA, Madison, WI.

Russell, A.E., Cambardella, C.A., Laird, D.A., Jaynes, D.B., Colvin, T.S., Meek, D.W. Nitrogen fertilizer effects on soil carbon balances in Midwestern U.S. Agricultural Systems. Ecological Applications. 19(5):1102-1113. 2009. PDF

Wang, L., Zhiqiu, G. Horton, R., Lenschow, D.H., Meng K. Jaynes D.B., and Shao, M. An analytical solution to the one-dimensional heat conduction-convection equation. Soil Soil Sci. Soc. Am. J. 76:1978-1986. 2012. PDF

 

Book Chapters and Proceedings Papers

Fausey, N.R., Pitts, D., Jaynes, D.B. Agricultural drainage water management in the Upper Mississippi River Basin: Potential impact and implementation strategies. Nonpoint Source Water Quality Monitoring Results Workshop. Meeting Abstract. 2008. (Conf. Proc.)

Frankenberger, J., Kladivko, E., Sands, G., Jaynes, D.B., Fausey, N.R., Helmers, M., Cooke, R., Strock, J., Nelson, K., and Brown, L. Drainage water management for the Midwest. Purdue Extension, Knowledge to Go. WQ-44. p. 1-8. 2006. (Extension Publication) (pdf)

Jaynes, D. B. Mapping pesticide partition coefficients by electromagnetic induction. p. 233-240. In B.J. Allred et al. (ed.) Handbook of agricultural geophysics. Boca Raton, CRC Press, 2008.

Jaynes, D.B. and D.L. Karlen. Sustaining soil resources while managing nutrients. p. 149-158 In UMRSHNC, the Upper Mississippi River Sub-basin Hypoxia Nutrient Committee:  Final report: Gulf Hypoxia and Local Water Quality Concerns Workshop 26-28 Sept, 2005 Ames, Iowa. ASABE St. Joseph, MI. 2008. PDF

Jaynes, D.B., K.R. Thorp, and D.E. James. Potential water quality impact of drainage water management in the Midwest USA.  Paper No. IDS-CSBE-100084, 9th Intern Drainage Symp Proc, 13-16 June 2010, Quebec City Canada. (Conf Proc) pdf

Moorman, T.B., Jaynes, D.B., Jayachandran, K., Miller, J., Cambardella, C.A., and Hatfield, J.L. Processes controlling atrazine leaching in the pothole topography of central Iowa. Vol. I, pp. 133-136. In: Proc. Clean Water-Clean Environment-21st Century, Kansas City, MO, March 5-8, 1995. Am. Soc. Agric. Engrs., St. Joseph, MI. 1995. . (Conf Proc) PDF

Youssef, Mohamed, Skaggs, R. Wayne, Abdelbaki, Ahmed M., Thorp, Kelly R., Jaynes, Dan B. Drainmod-simulated permformance of drainage water management across the U.S. Midwest. Paper No IDS-CSBE-100206, 9th Intern. Drainage Symp., June 13-17, 2010, Quebec City, Canada. (Conf Proc) pdf

 


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