Content of macroand micro-elements of vigna, kiwano, bitter melon, and wax gourd in greenhouse cultivation

The content of macro- (C, N, P, S) and micro-elements, as well as some metals was analyzed in fruits, leaves, stems, and roots of vigna, kiwano, bitter melon, and wax gourd growing in the condition of unheated polyethylene-covered greenhouse in Novosibirsk (Russia), The revealed low concentration of sulfur and big atomic ratio of nitrogen to sulfur in plant phytomass is the result of insufficient macro-elements supply from fertilizers and peat-substrates. The kiwano fruits are characterized by high concentration of К, Ca, Mg, Zn, Fe, Cu, and Ni and therefore is worth introducing this culture in Russia,