Tomato productivity depending on mineral nutrition and irrigation regimes in the conditions of film greenhouses in the mountain zone of the KBR

Abstract

The limited irrigation areas in the KBR, as well as the lack of a clear technology for the cultivation of this crop in film greenhouses using irrigation regimes and mineral fertilizers strongly affect the development and production of early tomatoes. In this regard, our research was devoted to the cultivation of tomatoes under irrigation conditions with the selection of the optimum doses of mineral fertilizers in spring film greenhouses. In the KBR settlements, vegetable crops are mainly grown in film greenhouses, which have numerous advantages over block greenhouses, mainly due to the cheapness of production several times over. Tomato seedlings were planted on April 10. Analysis of the data showed that the duration of the growing season increases on variants with optimum water and nutrient regimes of the soil, which led to higher quality products. This created favorable conditions for greater productivity of tomato fruits. Studies showed that the number of fruits and their weight on one plant were maximum according to the variants of the experiment on soil moisture content of 80% of normal moisture. The maximum value was obtained with a dose of mineral nutrition N190P160K120.