De nos jours, les nouvelles techniques de mise en place des grandes cultures sont de plus en plus pratiqu�es pour des raisons d'�conomie d’�nergie et de temps; mais cela pourrais entra�ner une pollution des sols car ces techniques utilisent �norm�ment des herbicides pour la destruction des mauvaises herbes. la question reste pos�e polluer le sol (donc les cultures et les nappes d'eau) ou polluer l'atmosph�re ???!!!

About the Author

Enseignant chercheur en sciences agronomiques, Responsable du D�partement de G�nie Rural � l’�cole Nationale Sup�rieure d'Agronomie - AlgerActivit�s de recherche portant sur la m�canisation agricole, la mod�lisation des besoins en �nergie pour l'agriculture et l'optimisation des pratiques agricoles.

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Edward Bowditch Ltd
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