Basic research of the acquisition of biological information towards the construction of agricultural support system

摘要

In recent years, record and analysis of environmental information have become easier by using ICT. However, Grasp of the growing conditions of crops have been left to the decision of a skilled farmers. We need new sensing technology that new farmers and young farmers can find the condition of the crops. Skilled farmers decide growing conditions from the color of leaves. This study aims to develop a new sensor using the method. For that, we did the basic research on the leaf color and the growing of crops. The absorption spectrum of the leaves is analyzed by spectrometer. In addition, the amount of chlorophyll is measured by chlorophyll meter. It compare with absorption spectrum of the leaf. From the measurement results, The wavelength (676.791nm) which is most affected by chlorophyll in the leaf was ascertained. In addition, the relation between the absorption spectrum at the characteristic wavelength and the change in the chlorophyll amount was obtained. These results suggest that this measurement can be used for comprehension of the growth condition of crops.