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| Titel |
Use of wastewater : challenge against scarcity,enhancement of crop disease and environment damage. |
| VerfasserIn |
Abdelmalek Dahchour, Souad El Hajjaji, Fadoua El Makhoukhi |
| Konferenz |
EGU General Assembly 2015
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 17 (2015) |
| Datensatznummer |
250101878
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| Publikation (Nr.) |
 EGU/EGU2015-1141.pdf |
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| Zusammenfassung |
| Reuse of treated wastewater in agriculture is a potential alternative to face shortage in water
resources mainly in arid regions. Morocco is among countries that have experienced long and
severe period of drought associated with shortage in water resources. Though the large efforts
deployed in providing water supplies to different regions, this resource remains sufficiently
available in northern part of the country only. This situation has pushed growers
to use non treated wastewater for irrigation without any environmental or health
cautions.
Trials with waste water for irrigation have demonstrated net increase in production of
irrigated crops, good improvement of soil texture and availability of nutrients. However
interactions with pesticides remain neglected. Actually this interaction could be associated
with an improvement or reduction of the efficacy of a given pesticide. On environmental point
of view, it could improve or reduce adsorption, mobility of soil applied pesticides toward
groundwater.
Laboratory test with a selected fungicide showed net reduction of the efficacy of the
pesticide against the target fungus. Comparison between growing species in medium spiked
with pesticide/ wastewater and pesticide only shoed net increase of the growth in presence of
wastewater.
In the column of soil, low mobility herbicide showed net increase in mobility after
percolation with water spiked with wastewater under laboratory conditions.
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