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Studies on the physiology of Philippine mint (Mentha cordifolia Opiz). III. Variation in oil yield


, : Studies on the physiology of Philippine mint (Mentha cordifolia Opiz). III. Variation in oil yield. Philippine Journal of Science 103(1): 67-71

The oil yield of vegetative tops of Mentha cordifolia is highest during March to July, reaching a peak in June. These months are preceded by a period of increasing dry weight production from January to March. A secondary peak of oil yield occurs in December and oil yield is lowest in September and in February. The young vegetative tops have a higher oil yield than older parts.

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