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NASA crop calendars: Wheat, barley, oats, rye, sorghum, soybeans, cornCrop calenders used to determine when Earth Resources Technology Satellite ERTS data would provide the most accurate wheat acreage information and to minimize the amount of ground verified information needed are presented. Since barley, oats, and rye are considered 'confusion crops, i.e., hard to differentiate from wheat in ERTS imagery, specific dates are estimated for these crops in the following stages of development: (1) seed-bed operation, (2) planting or seeding, (3) intermediate growth, (4) dormancy, (5) development of crop to full ground cover, (6) heading or tasseling, and flowering, (7) harvesting, and (8) posting-harvest operations. Dormancy dates are included for fall-snow crops. A synopsis is given of each states' growing conditions, special cropping practices, and other characteristics which are helpful in identifying crops from ERTS imagery.
Document ID
19760007487
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Stuckey, M. R. (Department of Agriculture Washington, DC, United States)
Anderson, E. N. (Department of Agriculture Washington, DC, United States)
Date Acquired
September 3, 2013
Publication Date
January 17, 1975
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
NASA-CR-145956
Accession Number
76N14575
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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