STUDY OF IMPACT LAND COVER WITH VEGETATION (Tr.alexandrinum L.) AND ITS MULCHING ON AGRICULTURE SUSTAINABLE SYSTEMS

In order to increase the sustainability of agricultural farm and to insure it as a sustainable system meaning to manage it in respect of the environment, it needs to be be recognized the role that the various components play which enhance the internal biodiversity of agricultural system. The choices that we make for the management of agricultural systems should be oriented toward increasing the level of sustainability, which is directly depended from the level of biodiversity that we carry in the system. Simplifying that conventional agricultural system has suffered such as plantingn a few species selected by human, chemical control of insects, fungies and bacteries by means of pesticides; spontaneous drug control through herbicides; maintaining soil fertility through chemical fertilizers have reduced to a minimum level the internal biodiversity of system, and for qonsecuence its sustainability. We must turn the agricultural farm in a system that should be able to manage itself and essential for this purpose is the presence of internal farm biodiversity which performs a number of useful functions such as; improves the farm microclimate, limits the soil erosion, allows the development of beneficial insects populations, affects a rapid recycling of organic matter; improves the esthetic aspect of farm landscape etc. Covering of land by vegetation and mulching are successful practices that increase diversity, consequently and the sustainability of agricultural systems. Precisely covering the land by vegetation (Trifolium alexandrinum L.) in orchard and through mulching practicees with vegetable materials, have been the subject of this research performed in EDE of Agricultural University, to see their effects on agro-ecosystemes.