Method of and device for measuring chlorophyll of living leaves

摘要

In a method for measuring chlorophyll of a leaf of a plant, the light having passed through the leaf is divided into a light component of a shorter wavelength the amount of which changes with the amount of chlorophyll and another component of a longer wavelength the amount of which does not change with the amount of chlorophyll. The amount of these two components are measured at the same time and the difference therebetween is used for determining the amount of chlorophyll contained in the leaf. A chlorophyll meter utilizing the method is provided with a spectroscopic dividing means for dividing the light which has passed through the leaf into the two components.