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The paper presents some considerations regarding construction and operation of coupling systems used for tractors to aggregation, for achieve agricultural works. [ABSTRACT FROM AUTHOR]

In the context of European requirements on polluted sites decontamination from industrial activities, we must develop new strategies with the main target to neutralize the harmful effects on the ecosystem. To implement decontamination technologies, we must considered a first plan that aims improving soil structure by agro-technical works and a second plan that seeks to establish technologies for crop plants that have the capacity to decontaminate and greening the soil. They can cultivate herbal plants, wild plants, legumes that improve the soil through atmospheric nitrogen fixation, trees and shrubs. Growing energy plants brings substantial benefits, by making forestry curtains that prevents soil erosion. The resulted wood can have many uses: in pellets and briquettes manufacture, in furniture industry, etc. [ABSTRACT FROM AUTHOR]