Spectral signature reflectance of rice to monitor the response of rice to ozone stresses using in-situ measured hyperspectral remote sensing technology
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Abstract
The purpose of this research was to study spectral signature reflectance of RD43 rice variety on stress conditions from the effect of ozone gas at the concentrations which was less than 10 ppb (control), 40 ppb and 80 ppb measured by the hyperspectral remote sensing technology in each growth phases. The results showed that the in-situ measured hyperspectral remote sensing technology was able to classify the RD43 rice that has received ozone compared with the control group (no ozone fumigation) at reproductive growth phase (14 days ozone fumigated). The strong correlations of the reflectances of green band, red band, near-infrared (NIR) and shortwave infrared (SWIR) were clearly observed between experimental group and control group with significantly different at p<0.05. During the reproductive growth; under near infrared wave of 740 - 1350 nm, the concentration of ozone gas 80 ppb exhibited the highest reflectivity of the electromagnetic wave by 0.385 ± 0.024, followed by the concentration of 40 ppb (0.373 ± 0.019) and control group (0.256 ± 0.011), respectively. The findings of this research could benefit for using as a guideline to monitor the effects of ozone gas on rice with hyperspectral remote sensing technology.
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References
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