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Title: SPATIAL AND TEMPORAL CORRELATIONS BETWEEN CROP YIELD AND REMOTELY SENSED PLANT CANOPY CHARACTERISTICS

Author
item MAAS, STEPHAN - TEXAS TECH. INSTITUTE
item Fitzgerald, Glenn
item Detar, William

Submitted to: Biannual Workshop in Color Photography and Videography in Resource
Publication Type: Proceedings
Publication Acceptance Date: 5/6/1999
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: A study was conducted to investigate the spatial correlation of cotton (Gossypium hirsutum L.) yield with remotely sensed plant canopy characteristics (near-infrared reflectance and ground cover). High-resolution multispectral imagery of two fields was obtained on 10 observation dates during the 1998 growing season. Yield maps were obtained for the two fields at the end of the growing season using a cotton yield monitor. Image digital counts were converted to reflectance and used to estimate cotton canopy ground cover. Remote sensing data and yield maps were coregistered and resampled for direct comparison of near-infrared reflectance, ground cover, and yield on a pixel-by-pixel basis. For each field and observation date, simple linear regressions were determined between yield and reflectance, and yield and ground cover. The statistical significance of the coefficients of determination (r2) for each regression was tested. Analysis of these results suggests a temporal progression in the statistical significance of the correlation between yield and remotely sensed plant canopy characteristics over the course of the growing season.