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Abstract
At the end of the century, are fresch thinkings on the role of agriculture to be frought about ? For mille- niums, man hood domination has originated in its life and death power over species. Since about two hundred years, industrial revolutions have made peasants richer, but also crushed between customers and suppliers. To morrow, natural environment is likely to be threatened by men, as welle as mechanical or animal slaves congestion. Different modes of calculations in agronomy as well as in economics will be the only way for saving human hoodfrom disappearance.