Published in Scientific Papers. Series B, Horticulture, Vol. LXV, Issue 1
Written by Nikolay PANAYOTOV, Nadezhda PETKOVA, Alexander TRAYANOV
The main aim of the present study was to establish the influence of different fertilization regimes and rates in carrot seed production on some sowing parameters and the chemical composition of the seeds. The experiments were carried out with carrot 'Tushon’ variety. The seed plants were grown using the standard technology through stecklings. Three levels of NPK fertilization 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, respectively. The weight of 1000 seeds, germination energy and germination were studied. The content of dry matter, moisture, ash, raw protein, carbohydrates and total lipids in carrot seeds were evaluated. The highest germination energy and germination were counted at N90P90K200 for once application and for twice one it was observed for N90P90K200 and N50P190K100. The highest changes were observed in the content of total lipids. Middle to strong positive correlation was found between the content of raw protein, lipids and carbohydrate and germination energy. Polynomial regressions between evenly increased fertilization rate and content of above- mentioned compounds with high determination coefficients were established.
[Read full article] [Citation]
