Abstract
The main goal of vegetable growers is to obtain early and quality harvests. In this article, the experiments were carried out in the period 2005–2007, and the culture behavior of new early cabbage hybrids, the influence of plant thickness on the production of cabbage grown in greenhouses and the field and the influence of additional protection were investigated on the early production of cabbage in greenhouses and in the field. During the years 2005–2007, studies were undertaken on the culture behavior of six hybrids and an early cabbage variety, using two different planting plots and two protection systems.