Abstract
Water and nitrogen absorption by corn (Zea mays L.) are partly determined by the region in the soil containing roots and, as a result, rooting patterns could change water availability and leaching of nitrates. A two-dimensional model of corn root growth was developed and linked to a two-dimensional model for water, heat and solute transport in soil. The model was calibrated with root distribution and soil environment data obtained in a Mollisol at Lamberton, MN. Changing the root growth parameters allowed the model to be used to compare water uptake and NO3 leaching between a shallow, dense root system and a deep, sparse root system. For the rainfall conditions used in model validation, the model predicted a small amount of water absorption from lower in the soil profile with the deep, sparse root system compared with the shallow root system, but that most of the water for transpiration would come from shallow depths directly below the plant. Nitrate leaching was almost identical for both root systems. However, the model predicted reduced downward movement of N when plant uptake of water occurred than with no plant water uptake. The bulk volume of soil explored by the root system may be more important for determining water availability and possible plant water stress during dry periods than for decreasing fertilizer or pesticide leaching. The model should be useful for other examinations of water and chemical movement in the soil by including the effects of the plant in the system. The model also allows at least a preliminary examination of soil management effects on water and nutrient availability.
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References
Allmaras R R and Nelson W W 1971 Corn (Zea mays L.) root configuration as influenced by some row-interrow variants of tillage and straw mulch management. Soil Sci. Soc. Am. Proc. 35, 974–980.
Allmaras R R, Gupta S C, Swan J B and Nelson W W 1987 Hydrothermal effects on on corn root development in a Mollisol. In Transactions XII Congress International Society of Soil Science, Symposia Papers, Vol. V. Hamburg, 1986. pp 3–19.
Mengel D B and Barber S A 1974 Development and distribution of the corn root system under field conditions. Agron. J. 66, 341–344.
Bar-Yosef B and Lambett J R 1981 Corn and cotton root growth in response to soil impedance and water potential. Soil Sci. Soc. Am. J. 45, 930–935.
Benjamin J G, Blaylock A D, Brown H J and Cruse R M 1990a Ridge tillage effects on simulated water and heat transport. Soil Tillage Res. 18, 167–180.
Benjamin J G, Ghaffarzadeh M R and Cruse R M 1990b Coupled water and heat transport in ridged soils. Soil Sci. Soc. Am. J. 54, 963–969.
Benjamin J G, Havis H R, Ahuja L R and Alonso C V 1994 Leaching and water flow patterns in every-furrow and alternate furrow irrigation. Soil Sci. Soc. Am. J. 58, 1511–1517.
Boyce W E and DiPrima R C 1977 First order differential equations. In Elementary Differential Equations and Boundary Value Problems. Third edition. pp 11–81. John Wiley and Sons, New York, USA.
Bristow K L 1987 On solving the surface energy balance equation for surface temperature. Agric. For. Meteorol. 39, 49–54.
Chung S O and Horton R 1987 Soil heat and water flow with a partial surface mulch. Water Resour. Res. 23, 2175–2186.
De Vries D A 1966 Thermal properties of soils. In Physics of Plant Environment. 2nd edition. Ed. W Rvan Wijk. pp 210–235. North Holland, Amsterdam.
Feddes R A, Bresler E and Neuman S P 1974 Field test of a modified numerical model for water uptake by a root system. Water Resour. Res. 10, 1199–1206.
Flesch T K and Dale R F 1987 A leaf area index model for corn with moisture stress reductions. Agron. J. 79, 1008–1014.
Foth H D 1962 Root and top growth of corn. Agron J. 54, 49–53.
Hamlett J M, Horton R and Baker J L 1987 Water and nitrate movement under ridge tillage. ASAE Paper 87–2102. Am. Soc. Agric. Eng., St. Joseph, MI, USA.
Jones C A, Bland W L, Ritchie J T and Williams J R 1991 Simulation of root growth. In Modeling Plant and Soil Systems. Agronomy Monograph 31. pp 91–123, ASA-CSSA-SSSA. Madison, WI, USA.
Jones C A and Kiniry J R (ed) 1986 CERES-Maize: A simulation model of maize growth and development. Texas A and M Univ. Press, College Station, TX, USA.
Kemper W D, Olsen J and Hodgdon A 1975 Fertilizer or salt leaching as affected by surface shaping and placement of fertilizer and irrigation water. Soil Sci. Soc. Am. Proc. 39, 115–119.
Kiesselbach T A 1949 The structure and reproduction of corn. Research Bulletin 161. Univ. Nebr. Agric. Exp. Sta., Lincoln, USA.
Miller E C 1916 Comparative study of the root systems and leaf areas of corn and the sorghums. J. Agric. Res. 9, 311–331.
Ritchie J T 1972 A model for predicting evaporation from a row crop with incomplete cover. Water Resour. Res. 8, 1204–1213.
Ritchie S W and Hanway J J 1982 How a corn plant develops. Special Rep. No. 48. Iowa State Univ. Cooper. Exten. Serv., Ames, IA, USA.
Simunek J and van Genuchten M Th 1994 The CHAIN-2D code for simulating the two-dimensional movement of water, heat and multiple solutes in variably-saturated porus media. Version 1.1. U.S. Salinity Lab. Res. Rep. No. 136, USA.
Tardieu F 1988a Analysis of the spatial variabllity of maize root density. I. Effect of wheel compaction on the spatial arrangement of roots. Plant and Soil 107, 259–266.
Tardieu F 1988b Analysis of the spatial variability of maize root density. II. Distances between roots. Plant and Soil 107, 267–272.
Timlin D J, Heathman G C and Ahuja L R 1992 Solute leaching in crop row vs. interrow zones. Soil Sci. Soc. Am. J. 56, 384–392.
United States Department of Agriculture 1995 Root zone water quality model, version 3.0. Great Plains Systems Research Unit Tech. Rep. No. 3. Ft. Collins, CO, USA.
Van Bavel C H M and Hillel D I 1976 Calculating potential and actual evaporation from a bare soil surface by simulating concurrent flow of water and heat. Agric. Meteorol. 17, 453–476.
Villalobos F J and Fereres E 1990 Evaporation measurements beneath corn, cotton, and sunflower canopies. Agron. J. 82, 1153–1159.
Weaver J E 1926 Root habits of corn or maize. In Root Development of Field Crops. pp 180–191. McGraw-Hill, New York, USA.
Weihing R M 1935 The comparative root development of regional types of corn. Agron. J. 27, 526–537.
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Benjamin, J.G., Ahuja, L.R. & Allmaras, R.R. Modelling corn rooting patterns and their effects on water uptake and nitrate leaching. Plant Soil 179, 223–232 (1996). https://doi.org/10.1007/BF00009332
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DOI: https://doi.org/10.1007/BF00009332