The productivity of white cabbage using organic technology in the right-bank Forest-Steppe zone of Ukraine

White cabbage ( Brassica capitata alba L.) is one of the basic and most widely grown vegetable crops in Ukraine and worldwide. The growing demand for organic products increases the relevance of research aimed at selecting cabbage varieties and hybrids capable of ensuring high yields using organic cultivation technologies. The aim of the study was to investigate the characteristics of growth, development and yield formation of white cabbage varieties and hybrids under organic cultivation in open ground. Research on mid-season varieties and hybrids of white cabbage under organic cultivation in open ground was conducted by setting up field experiments in 2019-2023. Field and statistical research methods were used in the experimental work. The study was conducted with mid-season varieties such as ‘Slava 1305’, ‘Slavia’ and white cabbage hybrids: ‘Akvarel F 1 ’, ‘Megaton F 1 ’, and ‘Kubok F 1 ’. The results of the research showed that the biometric parameters of plants and products and the yield of white cabbage were significantly influenced by the biological characteristics of varieties and hybrids. The research showed that varietal characteristics influenced plant height, rosette diameter, number of leaves and leaf area. The largest leaf area of white cabbage plants in all phases of growth and development, including the phase of technical maturity, was observed in the hybrid ‘Akvarel F 1 ’ – 33.9 thousand m²/ha. The highest yield during the years of research was observed in the hybrids ‘Akvarel F 1 ’ and “Kubok F 1 ”, which provided an increase of 9.9 and 7.3 t/ha relative to the control. These hybrids formed the largest head weight – 1,273 g and 1,220 g, respectively. The practical value of the study lies in the fact that its results make it possible to identify the most productive varieties and hybrids of white cabbage for organic cultivation in open ground, which will contribute to increasing its yield and quality