NASA Technical Reports Server (NTRS) : Remote pdf

NASA Technical Reports Server (NTRS) : Remote

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A method and apparatus for remote sensing of parasitic nematodes in plants, now undergoing development, is based on measurement of visible and infrared spectral reflectances of fields where the plants are growing. Initial development efforts have been concentrated on detecting reniform nematodes (Rotylenchulus reniformis) in cotton plants, because of the economic importance of cotton crops. The apparatus includes a hand-held spectroradiometer. The readings taken by the radiometer are processed to extract spectral reflectances at sixteen wavelengths between 451 and 949 nm that, taken together, have been found to be indicative of the presence of Rotylenchulus reniformis. The intensities of the spectral reflectances are used to estimate the population density of the nematodes in an area from which readings were taken

• Creator/s: NASA Technical Reports Server (NTRS
• Date: 12/1/2007
• Year: 2007
• Book Topics/Themes: NASA Technical Reports Server (NTRS), REMOTE SENSING, PARASITES, FARM CROPS, SPECTRAL REFLECTANCE, COTTON, EXTRACTION, INFRARED RADIATION, DETECTION, WORMS, SPECTRORADIOMETERS, Lawrence, Gary W., King, Roger, Kelley, Amber T., Vickery, John

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