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Assessment of Disease-Induced Yield Reduction in Cotton Using Simulated Satellite Imagery,

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Phymatotrichum Cotton root rot is a plant disease endemic to the southwestern United States and northern Mexico. This disease, caused by the fungus Phymatotrichum omnivorum, can infect more than 2000 species of cultivated crops and native trees and shrubs. While the extent of infestation can be detected with aerial photography, the cost of periodic coverage makes this data source uneconomical. Landsat multispectral scanner coverage, while frequent, is unsatisfactory because of poor spatial resolution. Thematic Mapper Simulator TMS data, flown over a study area near Tucson, Arizona, are demonstrated to possess sufficient spatial and spectral resolution for the detection, tabulation, and mapping of Phymatotrichum root rot. The scheduled July 1982 launch of Landsat D will make Thematic Mapper data available for subsequent mapping and monitoring of root rot throughout the North American area of infestation. Author

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This article is from 'Papers Selected for Presentation at the International Symposium on Remote Sensing of Environment (16th) Held at Buenos Aires, Argentina on 2-9 June 1982. Volume 1,' AD-A134 719. p443-451.



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