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Soil, water, and vegetation conditions in south TexasThe 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 data for a 600 hectare citrus farm were 83% for Redblush grapefruit and 91% for oranges. These accuracies indicate that there is good potential for computer-aided inventories of grapefruit and orange citrus orchards with LANDSAT-type MSS data. Mean digital values of clouds differed statistically from those for crop, soil, and water entities, and those for cloud shadows were enough lower than sunlit crop and soil to be distinguishable. The standard errors of estimate for the calibration of computer compatible tape coordinate system (pixel and record) to earth coordinate system (longitude and latitude) for 6 LANDSAT scenes ranged from 0.72 to 1.50 pixels and from 0.58 to 1.75 records.
Document ID
19760015542
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Wiegand, C. L. (Agricultural Research Service Weslaco, TX, United States)
Gausman, H. W. (Agricultural Research Service Weslaco, TX, United States)
Leamer, R. W. (Agricultural Research Service Weslaco, TX, United States)
Richardson, A. J. (Agricultural Research Service Weslaco, TX, United States)
Everitt, J. H. (Agricultural Research Service Weslaco, TX, United States)
Gerbermann, A. H. (Agricultural Research Service Weslaco, TX, United States)
Date Acquired
September 3, 2013
Publication Date
April 1, 1976
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
E76-10313
NASA-CR-146825
Accession Number
76N22630
Funding Number(s)
CONTRACT_GRANT: NASA ORDER S-53876-AG
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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