HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Benjamin, J. G. Articles by Cruse, R. M. Search for Related Content PubMed Articles by Benjamin, J. G. Articles by Cruse, R. M. Agricola Articles by Benjamin, J. G. Articles by Cruse, R. M.

Coupled Water and Heat Transport in Ridged Soils

Dep. of Agronomy, Iowa State Univ., Ames, IA 50011

*Corresponding author.

ABSTRACT

Study of ridge-tillage effects on the soil environment has been impeded by the lack of models to adequately describe water and heat movement in the ridge system. The ridge system introduces many nonuniform characteristics into the field problem, such as variable solar radiation across the soil surface, unevenly distributed surface mulches, and variable water and heat transport properties caused by ridge construction or wheel traffic. A finite-element model was developed to simulate coupled water and heat flow in ridge systems. The finite-element solution scheme was chosen because of the ease by which nonuniform soil transport properties and nonuniform boundary conditions can be included in the problem specifications. Model predictions of soil water and temperature were compared with field measurements for two ridge configurations. Predicted and measured average daily temperatures over a 10-d period were within 1 °C and water contents were within 0.02 m³ m^–3 for 80% of the measurements.

Contribution from the Iowa Agric. Exp. Stn. Journal no. J-13456. Project 2737.

Received for publication April 10, 1989.

This article has been cited by other articles:

				M. M. Mikha, C. W. Rice, and J. G. Benjamin Estimating Soil Mineralizable Nitrogen under Different Management Practices Soil Sci. Soc. Am. J., August 3, 2006; 70(5): 1522 - 1531. [Abstract] [Full Text] [PDF]

				L. Prunty and J. Bell Soil Temperature Change over Time during Infiltration Soil Sci. Soc. Am. J., May 6, 2005; 69(3): 766 - 775. [Abstract] [Full Text] [PDF]

				B. Bargar, J.B. Swan, and D. Jaynes Soil Water Recharge under Uncropped Ridges and Furrows Soil Sci. Soc. Am. J., September 1, 1999; 63(5): 1290 - 1299. [Abstract] [Full Text]