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Head: Choma Zoltan Z.. To elaborate the theoretical backgrounds of the use of microelements in the soils of Transcarpathia and methods of complex management of nutritive regime taking into account the biological peculiarities of the agricultural crops. (popup.stage: ). Zakarpatian Institute of Agroindustrial production National academy of agrarian science of Ukraine.. № 0216U000214

Head: Choma Zoltan Z.. To learn agronomic value and to develop technologies of an effective utilization of local mineral and organic resources of Zakarpattya.. (popup.stage: ). Transcarpathian Institute AIP UAAS. № 0211U001941

Head: Choma Zoltan Z.. To develop agrogeochemical division into districts of soils in Ukraine and methodology of diagnostic of the condition of chemical elements (microelements, heavy metals) in system a soil - a plant as bases of optimization of microelement structure plant growing production. (popup.stage: ). Transcarpathian Institute AIP UAAS. № 0211U001935

Head: Choma Zoltan Z.. To establish laws of functioning of buffer mechanisms of sour and hidromorfic soils, to develop their technologies culturing and formation of steady fertility.. (popup.stage: ). Transcarpathian Institute AIP UAAS. № 0211U001926