Influence of fertilization regime on yield and quality of carrot (Daucus carota L.) seeds

Nikolay Panayotov, Velika Kuneva and Alexander Trayanov

Abstract: The main aim of the present study was to determine the effect of different fertilization regimes on the yield and quality of carrot seeds. The experiments were conducted with the Tushon variety. The seed plants were grown using standard technology through stecklings. Three levels of NPK were tested, as follows N – 0, 50, 70, 90 kg.ha-1, P – 0, 90, 140, 190 kg.ha-1 and K – 0, 100, 150, 200 kg.ha-1, applied once and twice. The yield from different variants, seed germination and germination was established. The highest yields were found to occur with a once application of N90P90K200 and twice fertilization with N90P90K100. The better quality of seeds was established after once application of N90P90K200 and twice one with N50P190K100. From the two-factor analysis the strongest influence to the seed production has the factor fertilization. The polynomial regressions between evenly increasing levels in once and twice fertilization and yield on the one hand and germination on the other were found with high determination coefficient, for productivity R2 = 0.994 and R2 = 0.808 and for germination R2 = 0.833 and R2 = 0.690, for once and twice fertilization, respectively.

Keywords: germination; regression; seed production; two-way analysis of variance; yield

Date published: 2021-09-16