||Plant Stress Detection by Remote Measurement of Fluorescence.
McFarlane, J. C. ;
Watson, R. D. ;
Theisen, A. F. ;
Jackson, R. D. ;
Ehrler, W. L. ;
||Environmental Monitoring Systems Lab., Las Vegas, NV.
Remote sensing ;
Air pollution ;
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
||Plant growth and development are based on the capture and transformation of electromagnetic radiation by chlorophyll. The efficiency of photosynthesis depends upon the presence of sufficient amounts of water, mineral nutrients, carbon dioxide, and light; and it can be regulated by any factor which interferes with the availability or mixture of those items. Plant damage by pollutants, water stress, or pathogens usually results in a reduced rate of photosynthesis. If damage is severe, visible symptoms may be evident on the leaves or stems. However, a decreased photosynthetic rate may not be visually evident but can result in reduced production that may be recognized only at harvest or when ameliorative measures no longer help. Measurement of the depression of photosynthetic rates is, therefore, an important criterion in the evaluation of pollutant effects, water sufficiency, and other stress conditions on plants.
||Pub. in Applied Optics, v19 p3287-3289, 1 Oct 80.
|NTIS Title Notes
||Reprint: Plant Stress Detection by Remote Measurement of Fluorescence.
|PUB Date Free Form
||9 May 80
||PC A02/MF A01