X-ray fluorescent and mid-infrared spectroscopic measurements of vigor information of tomato plant

The aim of this study is to develop a simple, rapid, simultaneous and quantitative spectroscopic method to measure the plant vigor of the tomatoes. The leaves of the tomato grown using some kinds of calcium (Ca) concentrations of the culture media were used as the samples for the spectroscopic measurements, because tomato is one of the typical agricultural products cultivated by hydroponics and the leaves would be an index of the nutrimental conditions. The X-ray fluorescent (XRF) spectroscopic characteristic represented the influences of Ca concentrations in media on the tomato vigor and the mid-infrared (MIR) spectroscopic characteristic showed the organic nutrient differences might be due to the variations of Ca concentrations in the culture medium. This study presents a great possibility to grasp the plant vigor in the agricultural fields using the XRF and MIR spectroscopic methods.