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Robert Horton
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Distinguished Professor of Agronomy
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About Robert Horton
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Distinguished Professor of Agronomy,
Iowa State University
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Agricultural Science
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Articles
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Conference Proceedings
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Articles
(129)
Article
Spatial and Temporal Dynamics of Soil-Surface Carbon Dioxide Emissions in ...
Soil Science Society of America Journal (2014)
Aaron L. Daigh, Thomas J. Sauer, Xinhua Xiao and Robert Horton
The interest in bioenergy crops has raised questions as to the potential of management strategies to preserve soil C pools ...
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Article
Time Domain Reflectometry Waveform Analysis with Second-Order Bounded Mean Oscillation
Soil Science Society of America Journal (2014)
Zhuangji Wang, Yuki Kojima, Songtao Lu, Yan Chen, et al.
Tangent-line methods and adaptive waveform interpretation with Gaussian filtering (AWIGF) have been proposed for determining reflection positions of time domain ...
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Article
Assessing potential of biochar for increasing water-holding capacity of sandy ...
GCB Bioenergy (2013)
Andres S. Basso, Fernando E. Miguez, David A. Laird, Robert Horton, et al.
Increasing the water-holding capacity of sandy soils will help improve efficiency of water use in agricultural production, and may be ...
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Article
Numerical Evaluation of a Sensible Heat Balance Method to Determine ...
Vadose Zone Journal (2013)
Yuki Kojima, Joshua L. Heitman, Gerald N. Flerchinger and Robert Horton
The applicability of the sensible heat balance (SHB) concept for estimating soil freezing and thawing rates was tested in a ...
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Article
Quantifying nonisothermal subsurface soil water evaporation
Water Resources Research (2012)
Pukhraj Deol, Josh Heitman, Aziz Amoozegar, Tusheng Ren, et al.
Accurate quantification of energy and mass transfer during soil water evaporation is critical for improving understanding of the hydrologic cycle ...
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Article
An Analytical Solution to the One-Dimensional Heat Conduction–Convection Equation ...
Soil Science Society of America Journal (2012)
Linlin Wang, Zhiqiu Gao, Robert Horton, Donald H Lenschow, et al.
Soil heat transfer occurs by conduction and convection. Soil temperatures below infiltrating water can provide a signal for water flux. ...
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Article
Short, Multineedle Frequency Domain Reflectometry Sensor Suitable for Measuring Soil ...
Soil Science Society of America Journal (2012)
Jinghui Xu, Xiaoyi Ma, Sally D. Logsdon and Robert Horton
Time domain reflectometry (TDR) is a well-established electromagnetic technique used to measure soil water content. Time domain reflectometry sensors have ...
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Article
Cumulative Soil Water Evaporation as a Function of Depth and ...
Vadose Zone Journal (2011)
X. Xiao, R. Horton, T. J. Sauer, J. L Heitman, et al.
Soil water evaporation is an important component of the surface water balance and the surface energy balance. Accurate and dynamic ...
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Article
Effect of Polyacrylamide Applications on Soil Hydraulic Characteristics and Sediment ...
Procedia Environmental Sciences (2011)
Yi Li, Mingan Shao and Robert Horton
The objective of this study is to determine how PAM applications to a fraction of the surface affect hydraulic parameters ...
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Article
Kirkham's Legacy and Contemporary Challenges in Soil Physics Research
Soil Science Society of America Journal (2011)
W. A. Jury, D. Or, Y. Pachepsky, H. Vereecken, et al.
Don Kirkham was instrumental in transforming soil physics into a modern scientific discipline by developing theories based on verifiable hypotheses, ...
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Article
Nitrous oxide emission from highland winter wheat field after long-term ...
Biogeosciences (2010)
X. R. Wei, M. D. Hao, X. D. Xue, P. Shi, et al.
Nitrous oxide (N2O) is an important greenhouse gas. N2O emissions from soils vary with fertilization and cropping practices. The response ...
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Article
Soil carbon dioxide (CO2) efflux of two shrubs in response ...
African Journal of Biotechnology (2010)
Wei Fu, Mingbin Huang, Ming,an Shao and Robert Horton
Although plant density should affect soil carbon dioxide (CO2) efflux and carbon cycling in semi-arid regions, the effects of plant ...
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Article
Biochar impact on nutrient leaching from a Midwestern agricultural soil
Geoderma (2010)
David Laird, Pierce Flemming, Baiqun Wang, Robert Horton, et al.
Application of biochar to highly weathered tropical soils has been shown to enhance soil quality and decrease leaching of nutrients. ...
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Article
Impact of biochar amendments on the quality of a typical ...
Geoderma (2010)
David A. Laird, Pierce Fleming, Dedrick D. Davis, Robert Horton, et al.
Biochar, a co-product of thermochemical conversion of lignocellulosic materials into advanced biofuels, may be used as a soil amendment to ...
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Article
Latent heat in soil heat flux measurements
Agricultural and Forest Meteorology (2010)
J. L. Heitman, R. Horton, T. J. Sauer, T. S. Ren, et al.
The surface energy balance includes a term for soil heat flux. Soil heat flux is difficult to measure because it ...
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Article
Investigating Time-Scale Effects on Reference Evapotranspiration from Epan Data in ...
Journal of Applied Meteorology and Climatology (2010)
Yi Li, Robert Horton, Tusheng Ren and Chunyan Chen
Reference evapotranspiration (ETo) and pan evaporation (Epan) are key parameters in hydrological and meteorological studies. The authors’ objectives were to ...
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Article
Comparison of the Iowa State University Effluent Limitation Guidelines Model ...
Transactions of the ASABE (2010)
Daniel S. Andersen, Robert T. Burns, Lara B. Moody, Matthew J. Helmers, et al.
This article compares results from the Iowa State University Effluent Limitations Guidelines (ISU-ELG) model to results obtained using the Soil-Plant-Air-Water ...
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Article
Use of the Soil-Plant-Air-Water Model to Predict Hydraulic Performance of ...
Transactions of the ASABE (2010)
Daniel S. Andersen, Robert T. Burns, Lara B. Moody, Matthew J. Helmers, et al.
Alternative treatment systems to control runoff from open beef feedlots may enhance environmental security and protect water quality. Several Midwestern ...
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Article
Comparison of six algorithms to determine the soil thermal diffusivity ...
Hydrology and Earth System Sciences Discussions (2009)
Z. Gao, L. Wang and R. Horton
Soil thermal diffusivity is a crucial physical parameter that affects soil temperature. Six prevalent algorithms to calculate soil thermal diffusivity ...
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Article
Influence of wave phase difference between surface soil heat flux ...
Hydrology and Earth System Sciences Discussions (2009)
Z. Gao, R. Horton, H. P. Liu, J. Wen, et al.
The sensitivity of climate simulations to the diurnal variation in surface energy budget encourages enhanced inspection into the energy balance ...
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Article
Evaluation of a new, perforated heat flux plate design
International Communications in Heat and Mass Transfer (2008)
T. J. Sauer, O. D. Akinyemi, P. Thery, J. L. Heitman, et al.
Accurate measurement of heat flux is essential to optimize structural and process design and to improve understanding of energy transfer ...
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Article
Sensible heat measurements indicating depth and magnitude of subsurface soil ...
Water Resources Research (2008)
J. L. Heitman, X. Xiao, R. Horton and T. J. Sauer
Most measurement approaches for determining evaporation assume that the latent heat flux originates from the soil surface. Here, a new ...
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Article
Sensible Heat Observations Reveal Soil-Water Evaporation Dynamics
Journal of Hydrometeorology (2008)
J. L. Heitman, R. Horton, T. J. Sauer and T. M. DeSutter
Soil-water evaporation is important at scales ranging from microbial ecology to large-scale climate. Yet routine measurements are unable to capture ...
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Article
Comparison of two soil temperature algorithms for a bare ground ...
Journal of Geophysical Research (2008)
Zhiqiu Gao, Donald H. Lenschow, Robert Horton, Mingyu Zhou, et al.
Two thermal transfer algorithms for soil are used to investigate the diurnal vertical temperature variation in the common case of ...
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Article
Surface and subsurface solute transport properties at row and interrow ...
Soil Science (2007)
Anju Gaur, Dan B. Jaynes, Robert Horton and Tyson E. Ochsner
Although numerous studies have investigated the effects of crop production practices on soil water dynamics, not much information is available ...
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