A DOSIMETRIC TECHNIQUE FOR THE MEASUREMENT OF ULTRAVIOLET-RADIATION EXPOSURE TO PLANTS

Due to the effects of geometry, orientation, atmospheric conditions and optical properties of leaves and soils, the UV exposure to a plant may differ significantly from that of ambient radiation. This paper presents a method utilizing a passive measuring technique with polysulfone dosimeters that provides the ability of measuring the UV exposure at a number of sites simultaneously. The UV exposures are measured at selected sites over models of three canopy shapes with a computer program interpolating and summing these to provide the total UV exposure incident on the canopy.