The effects of irrigation waters with different salt concentrations applied in different vegetation periods on the growth and development of kohlrabi

In this study, Kolibri F 1 and Korist F 1 (Brassica oleracea var. gongylodes L.) kohlrabi cultivars were used as material. Plants were grown in the soil of an unheated plastic greenhouse. Seeds were sown in peat-filled multipots and standart cultural practices were done until the first true leaves appeared. The seedlings were transplanted into the greenhouse starting from the period when they had the first 4-5 leaves and were irrigated with salt water prepared at different concentrations in two different vegetation periods. For this purpose, four different doses of NaCl salt (Control, 5 dS/m, 10 dS/m and 20 dS/m) were added to the irrigation water from the beginning of two different vegetation periods (from the young seedling period to the beginning of the stem, from the beginning of the stem to the harvest period). The experiment design was randomized plot with 3 replications. A total of 48 plots, 10 plants in each plot, thus a total of 480 plants in the whole experiment were used. As result, in parallel with the increase in NaCl concentration in irrigation water, an increase was observed in leaf temperatures and damage index, while other morphological and physiological characteristics were down. It was determined that plants were more affected by salt stress from the young seedling period to the stem beginning, also Korist F 1 was less damaged by salt stress than Kolibri F 1 .