Hydrology and Earth System Sciences www.hydrol-earth-syst-sci.net 1027-5606 1607-7938 10 4 2006 10.5194/hess-10-565-2006 http://www.hydrol-earth-syst-sci.net/10/565/2006/ http://www.hydrol-earth-syst-sci.net/10/565/2006/hess-10-565-2006.html http://www.hydrol-earth-syst-sci.net/10/565/2006/hess-10-565-2006.pdf 565 574 2006-08-08 The protective and attractive covering of a vegetated embankment using coir geotextiles S. Vishnudas s.vishnudas@citg.tudelft.nl H. H. G. Savenije P. Van der Zaag K. R. Anil K. Balan Water Resources Section, Delft University of Technology, Delft, The Netherlands UNESCO-IHE, Delft, The Netherlands College of Agriculture, Trivandrum, Kerala, India Government College of Engineering, Thrissur, Kerala, India This paper presents the results of a field experiment conducted in Kerala, South India, to test the effectiveness of coir geotextiles for embankment protection. The results reveal that treatment with geotextile in combination with grass is an effective eco-hydrological measure to protect steep slopes from erosion. In the context of sustainable watershed management, coir is a cheap and locally available material that can be used to strengthen traditional earthen bunds or protect the banks of village ponds from erosion. Particularly in developing countries, where coir is abundantly available and textiles can be produced by small-scale industry, this is an attractive alternative for conventional methods. This paper analyses the performance of coir geotextile in different treatments with respect to soil moisture content, protection against erosion and biomass production. Abramson, L. W., Lee, T. S., Sharma, S., and Boyce, G.: Slope stability and stabilization methods, Wiley, New York, 1995. Ahn, T. B. and Cho Yang, S. C.: Stabilization of soil slope using geosynthetic mulching mat, Technical note, Geotextiles and Geomembranes, 20, 135–146, 2002. Anil, K. R.: Use of coir geotextiles for soil and water conservation at varying slopes, Technical Report to Coir Board, India, prepared by Kerala Agriculture University, Kerala, India, 2004. Anil, K. R. and Sebastian, R.: Effect of coir geotextiles in Soil Conservation and slope land cultivation in varying land slopes with forest loam soil, in: Case histories of geosynthetics in infrastructure, edited by: Mathur G. N., Rao, G. V., and Chawla A. S., 73–77, CBIP publications, N.Delhi, India 2003. ASTM D 4595-86.: Standard test method for tensile properties of geotextiles by the wide-width strip method, 1998. Ayyar Ramanatha, T. S., Nair, R., and Nair, B. N. (Eds): Comprehensive Reference Book on Coir geotextiles, Centre for Development of Coir Technology, (C-DOCT), Trivandrum, 2002. Balan, K.: Case Studies on the Civil Engineering Applications of Coir Geotextiles, in: Case histories of geosynthetics in infrastructure, edited by: Mathur, G. N., Rao, G. V., and Chawla, A. S., CBIP publications, N.Delhi, India, 172–176, 2003. Balan, K. and Rao, V. G.: Durability of Coir Yarn for use in Geomeshes', proceedings of International seminar and technomeet on Environmental Geotechnology with Geosynthtics, ASEG/CBIP publications, New Delhi, 1996. English, B.: Filters, Sorbents and geotextiles, in: Paper and composites from agro-based resources, Boca Raton, FL, CRC Press, Lewis Publishers, 403–425, 1997. Bunch, R. and Lopez, G.: Soil recuperation in Central America: Sustaining Innovation after Intervention, Gatekeeper Series No. 55, International Institute for Environment and Development, London, 1999. Ghoshal, A., and Som, N.: Geotextiles and geomembranes in India – State of usage and economic evaluation. Geotextiles and Geomembranes, 12, 193–213, 1993, in: Trends in the use of geotextiles in India, edited by: Kaniraj, S. R. and Rao, V. G., Geotextiles and Geomembranes, 13, 389–402, 1994. Government of Kerala, (GoK): Soil Survey of Amachal Model watershed, Soil Survey Organisation, Department of Agriculture, Kerala, India, 2002. Johnson, N., Lilja, N., and Ashby, J.: Measuring the Impact of User Participation in Agricultural and Natural Resource Management Research, Agricultural Systems, 78, 287–306, 2003. Lekha, K. R.: Field instrumentation and monitoring of soil erosion in coir geotextile stabilised slopes-A case study, Geotextiles and Geomembranes, 22, 399–413, 2004. Mandal, J. N.: Geotextiles in India, Geotextiles and Geomembranes, 6, 253–274, 1987. Ogbobe, O., Essien, K. S., and Adebayo, A.: A study of biodegradable geotextiles used for erosion control, Technical note, Geosynthetics Int., 5, 545–553, 1998. Oosthuizen, D. and Kruger, D.: The use of Sisal Fibre as natural geotextile to control erosion, proceeding of the fifth international conference on geotextiles, geomembranes and related products, Singapore, 1994, in: Coir geotextiles- Emerging Trends, edited by: Rao, G. V. and Balan, K., The Kerala State Coir Corporation, Kerala, India, 2000. Ranganathan, S. R.: Development and Potential of Jute geotextiles, Geotextiles and Geomembranes, 13, 421–433, 1994. Rao, G. V., and Balan, K. (Eds.): Coir Geotextiles – Emerging trends, The Kerala State Coir Corporation, Kerala, India, 2000 Rickson, R. J.: Simulated vegetation and geotextiles, in: Slope stabilisation and erosion control: a bio-engineering approach, E and FN Spon, edited by: Morgan, R. P. C. and Rickson, R. J., London, ISBN 0 419 156305, 1995. Schurholz, H.: Use of woven coir geotextiles in Europe, Coir geotextiles conference, USA, 1991, in: Development of New Geosynthetic Products through Blending Of Natural Fibres, edited by: Banerjee P. K., in: Coir Geotextiles-Emerging trends, edited by: Rao, G. V. and Balan, K., The Kerala State Coir Corporation, Kerala, India, 2000. Sutherland, R. A., Menard, T., and Perry, J. L., The influence of rolled erosion control systems on soil moisture content and biomass production: Part II. A greenhouse experiment, Land Degrad. Dev., 9, 217–231, 1998. Thomson, J. C. and Ingold, T. S.: Use of Jute fabrics in erosion control, Report to the Jute Market promotion Project, International jute Organisation, International trade centre, UNCTAD/GATT, GENEVA, 1986. Ziegler, A. D., Sutherland, A., and Tran, L. T.: Influence of Rolled Erosion Control systems on temporal rainspalsh response- A laboratory rainfall simulation experiment, Land Degrad. Dev., 8, 139–157, 1997.