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Justus-Liebig-Universität Gießen (2010)

Studies on bioplastic for developing and evaluating of drip irrigation

Mostafa, Harby

Titre : Studies on bioplastic for developing and evaluating of drip irrigation

Auteur : Mostafa, Harby

Université de soutenance : Justus-Liebig-Universität Gießen

Grade : Doctor of Agricultural Sciences (Dr. agr.) 2010

Résumé
The requirements in agricultural production, the environmental protection and the water resources optimization have made farmers modernize irrigation systems. One aspect of these modernizations is the installation of drip irrigation systems. However, the new environmental regulations and growing environmental awareness throughout the world have triggered the search for new products and processes that are compatible with the environment. This study presents the results of a research project using the low pressure drip system (LPS) for small areas and investigating the possibilities and limitations in developing degradable materials for using as drip tapes. Since the irrigation tapes /laterals are usually removed at the end of the crop season, especially for the vegetables, it would be desirable to use biodegradable irrigation drip lines that would allow roto-tilling or ploughing of these materials after the end of the cultivation season, without the need to remove the tapes/ laterals. LPS can operate and perform efficiently and conserve water in the smallholdings (less than 10 hectares). For developing and managing micro irrigation systems, series of studies were done to identify the properties of some bioplastic materials and the possibility to use them as biodegradable drip tubes. Some bioplastic materials like Mater Bi, Ecoflex and Bi-OPL indicated good results where they has the possibility to use for producing the biodegradable drip tubes instead of PE or PVC that will not need to be collected and disposed of after use but will decompose in the soil without any adverse environmental effect. This will eliminate the disposal cost ; will be environmentally friendly and possibly, at least partially, the materials used may be based on renewable raw resources. So, further study can be conducted in the field with a rail bioplastic tubes at larger scale in order to validate the methodology and to have field data in order to better design the system.

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Page publiée le 17 mars 2011, mise à jour le 8 janvier 2019