Impact of herbicides upon the dynamic of the organic carbon in soils

A Zouaoui1, R Cheloufi2, H Messaadia3

Institut des sc. Vétérinaires et des sc. Agronomiques, univ. Batna. Algérie

Institut des sciences de la nature et de la vie, univ. d’El Tarf. Algérie.

Institut des sc. Vétérinaires et des sc. Agronomiques, univ. Batna. Algérie

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Abstract: The study focuses on the effect of two herbicides H1 Topic and H2 ZOOM, on carbon mineralization in two types of soil (sandy-clay and sandy) of the area of Ben M’hidi (Algeria). These herbicides are frequently used as means of wrestling against weeds which invade wheat field and culture of gardening. The results of our study highlight the variable effects of these weeds upon the production of carbon dioxide followed by depressive actions toward the microflora of soil with reducing the activity of micro-organisms. With highly the increasing dose, every soils confused, these effects are more evident with Topic rather than ZOOM, whose excess can have possible consequences of groundwater. Pollution can be avoided or limited by contributions of organic fresh material which further the reorganization of humic elements and avoid leaching.

Key words: sandy-clay, sandy, mineralization, microflora, microorganisms.

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