E3S Web Conf.
Volume 37, 2018The Sixth International Congress “Water, Waste and Environment” (EDE6-2017)
|Number of page(s)||9|
|Section||Waste Management and Environment|
|Published online||25 May 2018|
Characterization of pyrolysis products derived from three biological wastes and their effect on plant growth and soil water retention
Polydisciplinary Faculty, Ibn Zohr University, Taroudant, Morocco
4 Polydisciplinary Faculty, Ibn Zohr University, Taroudant, Morocco
5 Polydisciplinary Faculty, Ibn Zohr University, Taroudant, Morocco
2 Department of Plant Ecology, Justus-Liebig-University Heinrich-Buff-Ring26-32, Giessen, 35392 Germany
3 Department of Plant Ecology, Justus-Liebig-University Heinrich-Buff-Ring26-32, Giessen, 35392 Germany
6 Hassan II Agronomic and Veterinary Institute, Agadir, Morocco
* Corresponding author: :email@example.com
Over two-thirds of Morocco can be classified as semiarid, arid and desert with low and variable rainfalls. While the country is subject to frequent drought, groundwater resources are predominantly consume by irrigated agriculture leading to the depletion of water resources and degradation of soil quality. Application of bio-resources wastes to soils after pyrolysis process is well documented to help retain water and nutrients in soils. In this study, three bio-resources wastes derived from argan shells, wood chip, a blend of paper sludge and wheat husks are characterized for physical and chemical properties. To determine the potential impact of salt stress and toxic substances the second part of this study focused on the effect these bio-resources wastes have on germination of salad and barley respectively. The three bio-resources obtained from different biomass showed some unique properties compared to the soil, such as high electrical conductivity (EC), high content of K, Na and Mg, low content of heavy metals. Moreover, the water holding capacities increased with increasing application of bio-resources wastes. Concerning the phytotoxic tests, no negative effect was observed neither for salad (Lactuca sativa L.) nor for barley (Hordeum vulgare) indicating that the three bio-resources could be safely used for agriculture. Collectively, the use of these bio-resources wastes as a soil amendment is anticipated to increase both water and nutrient and could provide the potential for a better plant growth mainly in semiarid, arid and desert climatic conditions like the case of Morocco in which the agricultural practices reserve a majority of the water resources to be used for irrigation.
Key words: bio-resources wastes / water retention / phytotoxic tests / plant growth.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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