The article highlights the dependence of the yield and quality indicators of tomatoes on the density of tomato hybrid plants in the conditions of the Left-bank Forest-steppe of Ukraine, the study was carried out for two years. To accomplish the planned research tasks, the following experimental scheme was used: 2.5 plants/m2 (15 plants) 3.0 plants/m2 (18 plants per plot - control); 3.5 plants/m2 (21 plants) 4.0 plants/m2 (24 plants) sowing seeds for seedlings was carried out in boxes in the last decade of February. In the phase of the first-second true leaves, the plants were picked into pots with a volume of 0.5 liters. Tomato seedlings were grown in a film greenhouse with heating. At the age of 3-5 true leaves, the seedlings were planted on a test plot in a film greenhouse without heating. It was found that the parameters of tomato plants had significant differences in biometric indicators of development already in the flowering phase. Further, the plants developed with some differences and until the end of the growing season had a significant difference in biometric parameters and yield per unit area. The optimal plant density has been established – 3.5 pcs/m2, to obtain the maximum tomato yield (15.8 kg/m2), provided that the tomato is grown in a spring film greenhouse
tomato, protected ground, film greenhouses, plant density, hybrid, yield