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There are a total of 33 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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Thermal scanner data for studying freeze conditions and for aiding irrigation scheduling
Author(s): Bartholic, J. F.; Wiegand, C. L.; Leamer, R. W.; Namken, L. N.
Abstract: The use of thermal imagery in connection with plant water stress appears to hold considerable potential, particularly with scanners such as the RS-14 where internal calibration sources can be adjusted to bracket the ...
NASA Center: NASA (non Center Specific)
Publication Year: 1970
Added to NTRS: 2008-11-10
Accession Number: 72N12276; Document ID: 19720004627
Computer discrimation procedure comparisons using film optical densities
Author(s): Richardson, A. J.; Torline, R. J.; Weber, D. A.; Leamer, R. W.; Wiegand, C. L.
Abstract: No Abstract Available
NASA Center: NASA (non Center Specific)
Publication Year: 1970
Added to NTRS: 2008-07-02
Accession Number: 74N75204; Document ID: 19740077265; Report Number: NASA-CR-139471, SWC-422
Soil salinity detection
Author(s): Wiegand, C. L.; Richardson, A. J.; Gausman, H. W.; Leamer, R. W.; Gerbermann, A. H.; Everitt, J. H.
Abstract: The author has identified the following significant results. Growth forms and herbage biomass production varied considerably among saline and nonsaline soil range sites in Starr County. Grasses on saline soil sites were ...
NASA Center: NASA (non Center Specific)
Publication Year: 1975
Added to NTRS: 2008-07-01
Accession Number: 76N16553; Document ID: 19760009465; Report Number: E76-10131, NASA-CR-144403
Reflectance of vegetation, soil, and water
Author(s): Gausman, H. W.; Leamer, R. W.; Richardson, A. J.; Gerbermann, A. H.; Torline, R. J.; Gautreaux, M. R.; Everitt, J. H.; Guellar, J. A.; Rodriguez, R. R., et al.
Abstract: The author has identified the following significant results. Bands 4, 5, and 7 and 5, 6, and 7 were best for distinguishing among crop and soil categories in ERTS-1 SCENES 1182-16322 (1-21-73) and 1308-16323 (5-21-73) ...
NASA Center: NASA (non Center Specific)
Publication Year: 1974
Added to NTRS: 2008-07-01
Accession Number: 75N21760; Document ID: 19750013688; Report Number: E75-10235, NASA-CR-142423
Soil, water, and vegetation conditions in south Texas
Author(s): Wiegand, C. L.; Gausman, H. W.; Leamer, R. W.; Richardson, A. J.; Everitt, J. H.
Abstract: The author has identified the following significant results. Field spectral measurements and laboratory densitometric measurements showed that tree canopy reflectance differences among the Marrs, Redblush, and Valencia ...
NASA Center: NASA (non Center Specific)
Publication Year: 1976
Added to NTRS: 2008-06-30
Accession Number: 76N29677; Document ID: 19760022589; Report Number: E76-10447, NASA-CR-148524, QPR-6
Plant cover, soil temperature, freeze, water stress, and evapotranspiration
Author(s): Nixon, P. R.; Gausman, H. W.; Namken, L. N.; Leamer, R. W.; Richardson, A. J.
Abstract: There are no author-identified significant results in this report.
NASA Center: NASA (non Center Specific)
Publication Year: 1978
Added to NTRS: 2008-06-30
Accession Number: 78N21509; Document ID: 19780013566; Report Number: E78-10101, NASA-CR-155963
Soil, water, and vegetation conditions in south Texas
Author(s): Wiegand, C. L.; Gausman, H. W.; Leamer, R. W.; Richardson, A. J.; Everitt, J. H.
Abstract: The author has identified the following significant results. Software development for a computer-aided crop and soil survey system is nearing completion. Computer-aided variety classification accuracies using LANDSAT-1 MSS ...
NASA Center: NASA (non Center Specific)
Publication Year: 1976
Added to NTRS: 2008-06-30
Accession Number: 76N22630; Document ID: 19760015542; Report Number: E76-10313, NASA-CR-146825
Plant cover, soil temperature, freeze, water stress, and evapotranspiration conditions
Author(s): Wiegand, C. L.; Nixon, P. R.; Gausman, H. W.; Namken, L. N.; Leamer, R. W.
Abstract: The author has identified the following significant results. Procedures to edit cloud-contaminated pixels from those pixels representing Earth surface features were investigated. Because clouds are more reflective than Earth ...
NASA Center: NASA (non Center Specific)
Publication Year: 1979
Added to NTRS: 2008-06-30
Accession Number: 80N18521; Document ID: 19800010247; Report Number: E80-10072, NASA-CR-162643
Soil, water, and vegetation conditions in South Texas
Author(s): Wiegand, C. L.; Gausman, H. W.; Leamer, R. W.; Richardson, A. J.; Everitt, J. H.
Abstract: The author has identified the following significant results. Reflectance measurements with a field spectroradiometer on nine dates (between December 9 and April 8) during the growing season of two wheat varieties, Milam and ...
NASA Center: NASA (non Center Specific)
Publication Year: 1976
Added to NTRS: 2008-06-30
Accession Number: 77N10586; Document ID: 19770003643; Report Number: E77-10002, NASA-CR-148818, QPR-7
Soil, water, and vegetation conditions in south Texas
Author(s): Wiegand, C. L.; Gausman, H. W.; Leamer, R. W.; Richardson, A. J.; Everitt, J. H.
Abstract: The author has identified the following significant results. The best wavelengths in the 0.4 to 2.5 micron interval were determined for detecting lead toxicity and ozone damage, distinguishing succulent from woody species, ...
NASA Center: NASA (non Center Specific)
Publication Year: 1977
Added to NTRS: 2008-06-30
Accession Number: 77N27465; Document ID: 19770020521; Report Number: E77-10175, NASA-CR-153273
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