The use of biologically active substances in the composition of organic fertilizers in the cultivation of tomatoes in greenhouses

Stavropol State Agrarian University, lane Zootechnical 12, Stavropol, 355017, Russia

^* Corresponding author: seliwanowa86@mail.ru

Abstract

The purpose of the research is to study the effect of biologically active substances in organic fertilizers on the productivity of tomato Sherami F1 in a winter greenhouse. The production experience was laid in a winter glazed greenhouse, which is located in the sixth light zone.The objects of research were cherry tomato plants Sherami F1, organic fertilizers 5AP, Maxifol Rutfarm, Nutrimir 4-4-10, Quick-Link. In the experiment, the average plant growth per week, the height of the plants, the number of leaves, the number of brushes collected and the average weight of the fetus, the chemical composition of the plants and yield were determined. The largest growth in a week and the tallest plants were obtained with Quick-Link; the most brushes collected and the largest fruits - when applying fertilizer 5AP. The use of organic fertilizers contributed to the better absorption of macronutrients by tomato plants from a nutrient solution: the content of nitrogen, phosphorus and potassium in the leaves and fruits increased relative to the control. When using biologically active substances in organomineral fertilizers, tomato productivity increased by 1.1-2.7 kg/m2 compared to the control, and the biochemical composition of the fruits improved.