The quality of theessential oil is also equally important as it determines its marketprice for the farmer and its marketability for different end-uses.The quality of the essential oil is determined by its composition.Both these traits are well known to be affected by several fac-tors such as genetic, ontogenic, environmental factors, parts of theplant, post-harvest drying of the herb, distillation methods, dura-tion of distillation etc.