NITROGEN AND SULPHUR APPLICATION AFFECT PHENOLOGY AND ESSENTIAL OIL PRODUCTIVITY OF FRENCH BASIL (Ocimum basilicum)
Journal Title: International Journal of Agriculture Sciences - Year 2016, Vol 8, Issue 35
Abstract
Experiments were conducted on Ocimum basilicum with five levels of nitrogen (0,40,80, 120 and 160 kg per ha) and four levels of sulphur (0,30, 60 and 90 kg per ha) in a split plot design with three replications during rainy seasons 2011-12, 2012-13 and 2013-14. Nitrogen and sulphur application delayed onset and transition of phenological stages of French Basil except secondary and tertiary branching and 50% flowering. Nitrogen up to 120 and sulphur application up to 60 kg per ha noticed delayed primary branching, floral initiation, first fruit maturity, physiological and physical maturity. Response of nitrogen in increasing percentage accumulation of aromatic oil in Ocimum was positive with each increase in nitrogen and sulphur dose up to 80 and 90 kg per ha respectively during all growth stages with their maximum essential oil of 0.020 %.120 kg nitrogen /ha was the most responsive dose to get the maximum essential oil yield of 185 kg per ha which was 74.69 % more as compared to aromatic oil yield (105.90 kg per ha) when no nitrogen was applied. Nitrogen beyond this dose did not increase oil yield but instead decreased. Hence nitrogen above 120 kg per ha is detrimental effect on essential oil yield in Ocimum crop. Sulphur application also proved beneficial up to their maximum dose of 90 kg /ha in enhancing essential oil yield. The maximum aromatic oil yields of 32.00, 64.00, and 200.00 kg per ha respectively was recovered during 30, 60 and 90 days after transplanting with 90 kg sulphur applied to crop.
Authors and Affiliations
GYANENDRA TIWARI
Keywords
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