Fungicides containing adjuvant of natural origin
Environmental and food safety regulations of European Union limited the usage of copper containing fungicides and bactericides. They limited the amount of copper that could be applied in one year and in one hectare. However they assigned the right of decision on the introduction and the extent of limitation to the national authorities. Individual countries e.g. Austria limited the amount of copper (metal) to 2 kgs/ha/year, the Netherlands did to 0.5 kg/ha/year from the former 8 kg value. It means that farmers could not control bacterial and fungal plant diseases efficiently.
This problem could be solved by the application of adjuvant that could increase the efficacy of copper containing products. These adjuvants consist of fat and oil derivatives.
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