Share This Article:

Effect of Crop Root on Soil Water Retentivity and Movement

Abstract Full-Text HTML XML Download Download as PDF (Size:403KB) PP. 1782-1787
DOI: 10.4236/ajps.2012.312A218    3,486 Downloads   5,846 Views   Citations


The objective of this study was to clarify the effect of crop root on soil water retentivity and movement to improve the crop growth environment and irrigation efficiency. To simulate soil water movement considering the crop root effect on the physical properties of soil, a numerical model describing the soil water and heat transfers was introduced. Cultivation experiments were conducted to clarify the effect of the crop root on soil water retentivity and verify the accuracy of the numerical model. The relationship between soil water retentivity and the root content of soil samples was clarified by soil water retention curves. The soil water content displayed a high value with increasing crop root content in the high volumetric water content zone. The experimental results indicated that the saturated water content increased with the crop root content because of the porosity formed by the crop root. The differences of the soil water retentivity became smaller when the value of the matric potential was over pF 1.5. To verify the accuracy of the numerical model, an observation using acrylic slit pot was also conduced. The temporal and spatial changes of the volumetric water content and soil temperature were measured. Soil water and heat transfers, which considered the effect of the crop root on the soil water retentivity clarified by the soil water retention curves, were simulated. Simulated volumetric water content and temperature of soil agreed with observed data. This indicated that the numerical model used to simulate the soil water and heat transfer considering the crop root effect on soil water retentivity was satisfactory. Using this model, spatial and temporal changes of soil water content were simulated. The soil water condition of the root zone was relatively high compared with the initial conditions. This indicated that the volumetric water condition of the root zone increased with the soil water extraction and high soil water conditions was maintained because the soil water retentivity of root zone increased with the root effect.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

K. Yuge, K. Shigematsu, M. Anan and S. Yoshiyuki, "Effect of Crop Root on Soil Water Retentivity and Movement," American Journal of Plant Sciences, Vol. 3 No. 12A, 2012, pp. 1782-1787. doi: 10.4236/ajps.2012.312A218.


[1] M. C. Drew, “Comparison of Effects of a Localized Supply of Phosphate, Nitrate, Ammonium and Potassium on Growth of Seminal Root System, and Shoot, in Barley,” New Phytologist, Vol. 75, No. 3, 1975, pp. 479-490. doi:10.1111/j.1469-8137.1975.tb01409.x
[2] I. J. Bingham and E. A. Stevenson, “Control of Root- Growth-Effects of Carbohydrates on the Extension, Branching and Rate of Respi-ration of Different Fractiations of Wheat Roots,” Physiologia Plantarum, Vol. 88, No. 1, 1993, pp. 149-158.
[3] A. E. S. Macklon, L. A. Mackiedawson, A. Sim, C. A. Shand and A. Lilly, “Soil-P Resources, Plant-Growth and Rooting Characte-ristics in Nutrient Poor Upland Grasslands,” Plant and Soil, Vol. 163, No. 2, 1994, pp. 257- 266. doi: 10.1007/BF00007975
[4] V. M. Dunbabin, A. J. Diggle, Z. Rengel and R. van Hugten, “Modelling the Interactions between Water and Nutrient Uptake and Root Growth,” Plant and Soil, Vol. 239, No. 1, 2002, pp. 19-38. doi:10.1023/A:1014939512104
[5] M. J. Hutchings and E. A. John, “The Effects of Environmental Heterogeneity on Root Growth and Root/Shoot Partitioning,” Annals of Botany, Vol. 94, No. 1, 2004, pp. 1-8. doi:10.1093/aob/mch111
[6] Q. Y. Tian, F. J. Chen, J. X. Liu, F. S. Zhang and G. H. Mi, “Inhibition of Maize Root Growth by High Nitrate Supply Is Correlated with Reduced IAA Levels in Roots,” Journal of Plant Physiology, Vol. 165, No. 9, 2008, pp. 942-951. doi:10.1016/j.jplph.2007.02.011
[7] F. G. Fernandez, S. M. Brouder, J. J. Volenec, C. A. Beyrouty and R. Hoyum, “Soy-bean Shoot and Root Response to Localized Water and Potas-sium in a Split-Pot Study,” Plant and Soil, Vol. 344, No. 1-2, 2011, pp. 197- 212. doi:10.1007/s11104-011-0740-z
[8] C. Stritsis, B. Steingrobe, and N. Claassen, “Shoot Cadmium Concentration of Soil-Grown Plants as Related to Their Root Properties,” Journal of Plant Nutrition and Soil Science, Vol. 175, No. 3, 2012, pp. 456-465. doi:10.1002/jpln.201100336
[9] Y. Wang, P. Marschner and F. S. Zhang,, “Phosphorus Pools and Other Soil Properties in the Rhizosphere of Wheat and Legumes Growing in Three Soils in Monoculture or as a Mixture of Wheat and Legume,” Plant and Soil, Vol. 354, No. 1-2, 2012, pp. 283-298. doi:10.1007/s11104-011-1065-7
[10] M. Iijima, Y. Kono, A. Yamauchi and J. R. Paedales, “Effects of Soil Compaction on the Development of Rice and Maize Root Systems,” Environmental and Experimental Botany, Vol. 31, No. 3, 1991, pp. 333-342. doi:10.1016/0098-8472(91)90058-V
[11] A. G. Bengough, “Modelling Rooting Depth and Soil Strength in a Drying Soil Profile,” Journal of Theoretical Biology, Vol. 186, No. 3, 1997, pp. 327-338. doi:10.1006/jtbi.1996.0367
[12] A. G. Bengough, M. F. Bransby, J. Hans, S. J. McKenna, T. J. Roberts and T. A. Va-lentine, “Root Responses to Soil Physical Conditions; Growth Dynamics from Field to Cell,” Journal of Experimental Botany, Vol. 57, No. 2, 2006, pp. 437-447. doi:10.1093/jxb/erj003
[13] C. Becel, G. Vercambre and L. Pages, “Soil Penetration Resistance, a Suitable Soil Property to Account for Variations in Root Elongation and Branching,” Plant and Soil, Vo. 353, No. 1-2, 2012, pp. 169-180. doi:10.1007/s11104-011-1020-7
[14] K. Yuge, M. Ito, Y. Na-kano, M. Kuroda and T. Haraguchi, “Soil Moisture and Tem-perature Changes Affected by Isolated Plant Shadow,” Journal of Agricultural Meteorology, Vol. 60, No. 5, 2005, pp. 717-720.
[15] K. Yuge, T. Haraguchi, Y. Nakano, M. Kuroda and M. Anan, “Quantification of Soil Surface Evaporation under Micro-Scale Advection in Drip-Irrigated Fields,” Paddy Water Environment, Vol. 3, No. 1, 2005, pp. 5-12. doi:10.1007/s10333-004-0058-z
[16] A. C. Chamberlain, “Transport of Gases to and from Surface with Bluff and Wave-Like Roughness Elements,” Quarterly Journal of the Royal Meteorological Society, Vol. 94, No. 401, 1968, pp. 318-332. doi:10.1002/qj.49709440108

comments powered by Disqus

Copyright © 2018 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.