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Background An effective and expeditious approach to assess plant nitrogen status is urgently needed in rice production and management as the conventional chemical methods are laborious and time-consuming. Results Fourier transform infrared photoacoustic spectroscopy (FTIR-PAS) was used to record the spectra of rice leaves for the effective diagnosis of nitrogen nutrition status. The band in the...
Recent progress in microphone sensitivity has dramatically increased the performance of Fourier transform mid-infrared photoacoustic spectroscopy (FTIR-PAS). This technique offers benefits over reflectance spectroscopy techniques because the level of sample reflectance has little effect on the PAS signal. This also means that it should be advantageous for soil analysis because of its highly opaque...
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