Title :
Complex permittivity of the potato leaf during imposed drought stress
Author :
Colpitts, Bruce G. ; Coleman, Warren K.
Author_Institution :
Dept. of Electr. Eng., New Brunswick Univ., Fredericton, NB, Canada
fDate :
7/1/1997 12:00:00 AM
Abstract :
Complex permittivity of the potato leaf is measured over a range of expected moisture conditions in the context of relating synthetic aperture radar scattering to crop moisture status. Measurements were performed on excised leaves to determine complex relative permittivity, and leaf water relations including gravimetric moisture, relative water content, osmotic potential, water potential, and turgor pressure. Relationships between plant water relations and complex permittivity are shown and do not conform to the dual-dispersion model of Ulaby and El-Rayes (1987)
Keywords :
agriculture; backscatter; geophysical techniques; hydrological techniques; permittivity; radar cross-sections; remote sensing by radar; synthetic aperture radar; SAR; Solanum tuberosum; agricultural crops; backscatter; complex permittivity; crop moisture status; drought stress; geophysical measurement technique; gravimetric moisture; hydrology; leaf water relations; moisture conditions; osmotic potential; potato leaf; radar remote sensing; radar scattering; relative water content; soil moisture; synthetic aperture radar; turgor pressure; vegetation canopy; vegetation mapping; water potential; Backscatter; Crops; Electromagnetic scattering; Frequency measurement; Moisture measurement; Permittivity measurement; Pressure measurement; Probes; Radar scattering; Stress;
Journal_Title :
Geoscience and Remote Sensing, IEEE Transactions on
