Spectrophotometer for real-time underground soil sensing.
S Shibusawa, MZ Li, K Sakai, A Sasao, H Sato… - 1999 - cabidigitallibrary.org
S Shibusawa, MZ Li, K Sakai, A Sasao, H Sato, S Hirako, A Otomo
1999•cabidigitallibrary.orgA real-time on-line portable spectrophotometer was developed for collecting underground
soil reflectance at depths below 20 cm. Wavelengths available were 400-1700 nm with
resolution of below 6 nm. Test runs in the field were completed to get spectral reflectance at
35 cm depth with 23 cm interval. Using the spectral reflectance, soil moisture, pH, EC and
soil organic matter could be estimated.
soil reflectance at depths below 20 cm. Wavelengths available were 400-1700 nm with
resolution of below 6 nm. Test runs in the field were completed to get spectral reflectance at
35 cm depth with 23 cm interval. Using the spectral reflectance, soil moisture, pH, EC and
soil organic matter could be estimated.
Abstract
A real-time on-line portable spectrophotometer was developed for collecting underground soil reflectance at depths below 20 cm. Wavelengths available were 400-1700 nm with resolution of below 6 nm. Test runs in the field were completed to get spectral reflectance at 35 cm depth with 23 cm interval. Using the spectral reflectance, soil moisture, pH, EC and soil organic matter could be estimated.
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