Abstract
The paper discusses the problem of reducing the content of ascorbic acid (as a plant-protective antioxidant compound in Solanum tuberosumL. potato tubers) while improving the nutritional regime - the use of complete mineral fertilizer in low doses, humidity and temperature conditions and physiologically optimal for potato growth pH values (weakly alkaline). The possibilities of using exogenous antioxidants (humic preparations) to maintain the level of ascorbic acid in commercial products are considered. Experimental data were obtained in f eld studies on two types of soils and in two climatic regions (Voronezh and Moscow regions). It has been shown that humic preparations can maintain the level of ascorbic acid as an independent top dressing, and against the background of full mineral fertilizer with an increase in yield.
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