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EFFECTS OF UV-B RADIATION ON SOYBEAN YIELD AND SEED QUALITY: A 6-YEAR FIELD
Citation:
Teramura, A., J. Sullivan, AND J. Lydon. EFFECTS OF UV-B RADIATION ON SOYBEAN YIELD AND SEED QUALITY: A 6-YEAR FIELD. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-90/489 (NTIS PB91196287), 1990.
Description:
Two soybean, [Glycine max (L.) Merr.] cultivars, Essex and Williams, were grown in the field for 6 consecutive seasons under ambient and supplemental levels of ultraviolet B radiation to determine the potential for alterations in yield or seed quality with a reduction in the stratospheric ozone column. he supplemental UV-B fluences simulated a 16 or 25% ozone depletion. he data presented here represent the first field experiment conducted over multiple seasons which assesses the effects of increased UV-B radiation on seed yield. verall, the cultivar Essex was found to be sensitive to UV-B radiation (yield reductions of 20%) while the cultivar Williams was tolerant. owever, the effectiveness of UV-B radiation in altering yield was strongly influenced by the seasonal microclimate, and the 2 cultivars rest differently to these changing factors. ield was reduced most in Essex during seasons in Mich vater availability was high and was reduced in Williams only when water was severely limiting. he results of these experiments demonstrate the necessity for multiple-year experiments and the need to increase our understanding of the interaction between UV-B radiation and other environmental stresses in order to assess the potential consequences of stratospheric ozone depletion.
