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USE OF A SPECTRORADIOMETER TO STUDY AERIAL PHOTOGRAPHS OF OZONE-TREATED SOYBEANS
Citation:
Edwards, G. AND W. Cure. USE OF A SPECTRORADIOMETER TO STUDY AERIAL PHOTOGRAPHS OF OZONE-TREATED SOYBEANS. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-89/412 (NTIS PB90245838), 1989.
Description:
A scanning spectroradiometer was used to measure the optical densities of an aerial photograph of an experimental field in which soybeans were growing in response to different concentrations of ozone, an air pollutant. he plants were growing in 3 m diameter, 2.4m high open top exposure chambers. orrelation coefficients among the film densities, plant yield and visual estimates of non-green leaf area for the 16 test plots were highly significant (p<0.0); those with ozone treatment concentrations were significant (p<0.05). he early senescence induced by this form of environmental stress can thus be detected by film density differences, and these differences are well correlated with ground indicators of crop condition.
