Effect of harvesting time and nitrogen application on essential oil yield and quality of a methyl chavicol rich cultivar of Indian basil (Ocimum basilicum).

摘要

An experiment was conducted in Lucknow, Uttar Pradesh, India, in 2000 to study the effects of harvest date and nitrogen rates on a methyl chavicol-rich Indian basil (O. basilicum) cv. Vikarsudha. Treatments comprised: 3 harvest dates (75 days after planting (DAP) + 60 days after first harvest (DAFH); 90 DAP + 60 DAFH; and 105 DAP + 60 DAFH) and 5 nitrogen rates (0, 40, 80 120 and 160 kg/ha). Basil harvested at 75 DAP + 60 DAFH and supplied with 80 kg N/ha recorded the highest biomass, oil yields and nitrogen uptake compared to other treatments. Harvest dates and nitrogen rates did not affect the oil content and quality and nitrogen concentration in biomass.