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Reduction in soya-bean yield after a brief exposure to nitrogen dioxide

Published online by Cambridge University Press:  27 March 2009

G. Gupta  and
S. Sabaratnam
G. Gupta
Affiliation:
University of Maryland Eastern Shore, Princess Anne, MD 21853, U.S.A.
S. Sabaratnam
Affiliation:
University of Maryland Eastern Shore, Princess Anne, MD 21853, U.S.A.
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Extract

The most harmful of gaseous air pollutants include ozone (03), sulphur dioxide (SO2) and nitrogen dioxide (N02). These three pollutants are responsible for up to 90% of the total crop losses due to air pollution (Heck et al. 1981). Reduction in crop yield is one of the most common consequences of pollutant-crop interaction (Koziol & Whatley, 1984; Treshow, 1984). Mean yields of four soya-bean cultivars, York, Dare, Cutler and Clark, grown in open-top chambers with non-filtered air, were reduced by 20% compared with those grown in carbon-filtered air (Kohut et al. 1982). The major components affected were number of pods, number of seeds per filled pod and weight of seeds; a linear reduction in seed weight per plant was reported with increasing concentration of O3.

Type
Short Notes
Information
The Journal of Agricultural Science , Volume 110 , Issue 2 , April 1988 , pp. 399 - 400
Copyright
Copyright © Cambridge University Press 1988

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