Vol. 10, Issue 10 (2021)

Author(s):
Krishna D Kurubetta, JA Hosmath, SC Alagundagi, RV Hegde and CM Nawalagatti

Abstract:
The field experiment was conducted at Horticultural Research and Extension Centre, Devihosur, Haveri (Karnataka), India, during rabi seasons of 2019-20 and 2020-21. The experiment was laid out in split-split plot design with treatments of three sowing window (October II, November I and II fortnights) as main plots, two nigella varieties (AN 1 and AN 20) as sub plots and four crop geometry (22.5 x 10 cm, 30.0 x 10 cm, 37.5 x 10 cm and 45.0 x 10 cm) as sub-sub plots and replicated thrice. The pooled data of two years revealed that, sowing of nigella during November I fortnight with AN 1 variety at 45.0 x 10 cm spacing (D₂V₁S₄) recorded significantly higher content of essential oil and protein in seeds (0.70% and 205.70 g kg^-1, respectively). The oil yield due to interaction effect was significantly higher in sowing window of November I fortnight with AN 1 variety at spacing of 30.0 x 10 cm (D₂V₁S₂, 9.71 kg ha^-1). The interaction of sowing window, variety and crop geometry differed non-significantly for germination, field emergence and total seedling length.