Effects of Organic Foliar Fertilizers on Vegetable Crop Productivity and Biochemical Composition

The cultivation of vegetable crops under organic conditions is becoming very popular worldwide.The use of organic preparations in the cultivation technique contributes not only to the reduction of pesticide pollution, but also to the enrichment of plant products with bioelements through the introduction of essential trace elements that promote the biosynthesis and accumulation of micronutrients and biologically active substances.The results of studies conducted in 2022-2023 in the soil and climatic conditions of Moscow on the basis of the Federal State Educational Institution of Higher Professional Education named after K.A. Timiryazev of the Russian State Agricultural Academy to study the effect of treatments with organic preparations without root on the yield and quality of vegetable crops are presented.The research subjects were late cabbage (Brassica oleraceae L.), early potatoes (Solanum tuberosum L.), garlic (Allium sativum L.), organic preparations of Rostovit, OMEK-7 and Aminozol.It was found that foliar fertilization with an aqueous solution of the Rostovit preparation increased marketable products in white cabbage by 18% compared to the control, including a 16% increase in head weight.In garlic, foliar fertilization with OMEK-7 increased the marketable products by 35%.The tested preparations had a positive effect on the biochemical and elemental composition of white cabbage and garlic products (increase in iron (Fe), zinc (Zn) and vitamin (C) content), and in tomatoes (increase in potassium (K), ascorbic acid (vitamin C), iron (Fe) and copper (Cu)).