Effects of nitrogen fixing bacteria and manure application on seed yield and essential oil content of black cumin (Nigella sativa L.)
In order to assess the effects of nitrogen fixing bacteria and manure application on yield and essential oil of black cumin (Nigella sativa L.), an experiment was carried out at the RAN Research Station in Firouzkouh in 2012. The study was conducted in a 4×4 factorial experiment, arranged in a randomized complete blocks design with three replications. The treatments consisted of 4 levels of manure (0, 2.5, 5 and 7.5 ton ha-1) and 4 levels of fixing bacteria (Control, Azotobacter, Azospirillum and Azotobacter Azospirillum). The present results showed that the highest height (48.7 cm), essential oil percentage (0.14 %) and essential oil yield (768.31 g ha-1) were obtained after using 7.5 ton manure ha-1. While, the highest biological yield (1829.16 kg ha-1) and seed yield (556.22 kg ha-1) were obtained by 5 ton manure ha-1. Results of this investigation showed that the maximum plant height (49.61 cm), seed yield (553.41 kg ha-1), harvest index (37.71 %), biological yield (1697.21 kg ha-1) and essential oil yield (664.09 g ha-1) were obtained when Aotobacter̺Ⲧ⫢陛 was inoculated with black cumin seeds simultaneously. Combined application of nitrogen fixing bacteria and manure could be helpful in developing of production and yield in Nigella sativa L.
Iranian Journal of Medical and Aromatic Plants, Volume:32 Issue:4, 2016
716 - 727
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