Effect of foliar fertilization with organic preparations on tomato quality and yield

In modern vegetable growing, much attention is paid to environmental protection, especially to control of water regime, quality and quantity of fertilizers used. The use of preparations approved for organic vegetable growing contributes to the reduction of the pesticide pollution and the enrichment of vegetable products with bioelements. The research was carried out on the territory of the V.I. Edelstein National Center for Horticulture and Vegetable Growing in a spring film greenhouse. The aim of the research is to study the effect of foliar fertilization with preparations promising for organic farming on the yield, biochemical and elemental composition of tomato fruits. Three tomato hybrids and organic preparations Rostovit and Aminozol were studied. Standard methods and GoST standards were used in the research. The quality of the products was determined in the Central Research Institute of the Russian State Agrarian University – Moscow Timiryazev Agricultural Academy and the Federal Research Center for Vegetable Growing. As a result of the research, the positive reaction of tomatoes to the preparations approved for organic vegetable growing and containing brewer’s yeast extracts, macro- and microelements, amino acids was established, at the same time, the species-specific reaction of hybrids was noted. The triple foliar fertilization with aqueous solutions of Aminozol and Rostovit increased the yield of the Chernysh F1 hybrid by 31% and 28%, respectively, in comparison with the control varieties. The studied preparations had a positive effect on the biochemical and elemental composition of the fruits of the studied tomato hybrids: potassium (K), ascorbic acid (vitamin C), iron (Fe), copper (Si).

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