Investigation of Relationships between Salt Stress, Potassium Application and Macro Element Uptake in Pepper Plant

Abstract

This study was carried out to determine how plants behave in the uptake of macro nutrients by using different doses of potassium (K +) together with salt to understand how to recover from stress. Demre Sivri pepper variety was used in the study. The study was carried out in a controlled climate room for 16/8 hours with light / dark photoperiod, 25 ° C and 70% humid climate. Seedlings formed after germination of seeds transformed in pumice were taken to hydroponic culture after having 2 true leaves. Hoagland nutrition solution was used in hydroponic culture. 116, 136, 156 and 176 ppm potassium (K+) was used in the present Hoagland solution. In addition, 100 mM NaCl salt was applied to the plants. Sampling for measurements and analyzes was performed on day 20 of salt administration. In these samples, total plant weight and potassium (K +), calcium (Ca +2), magnesium (Mg +2) element contents were determined. At the same time, Na + and Cl- uptake were also investigated because of the salt application. The results showed that K+ doses of 156 ppm and 176 ppm were effective in ion uptake and reduction of harmful effects of salt.

Keywords: Pepper, Ion accumulation, Potassium doses, Salt stress

DOI: 10.7176/JSTR/5-11-03