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DEPRESSION OF GROWTH AND YIELD IN WINTER BARLEY EXPOSED TO SULPHUR DIOXIDE IN THE FIELD
Author(s) -
BAKER C. K.,
COLLS J. J.,
FULLWOOD A. E.,
SEATON G. G. R.
Publication year - 1986
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1986.tb00648.x
Subject(s) - hordeum vulgare , yield (engineering) , agronomy , sulfur , environmental science , growing season , grain yield , biology , zoology , chemistry , poaceae , materials science , organic chemistry , metallurgy
SUMMARY A field exposure system designed for the controlled release of sulphur dioxide (SO 2 ) was used in two contrasting seasons to expose commercial crops of winter bailey ( Hordeum vulgare L.) to SO 2 concentrations ranging from 40 to 200 ppb [parts per billion (10 9 ) by volume] above ambient. During winter and early spring, growth of the plants was depressed at high SO 2 concentrations but later recovered; in spring and summer, low concentrations stimulated growth above that of controls, but there was no corresponding increase in grain yield. Yield depression is discussed in relation to SO 2 concentration and dose.