섬유

injury and yield response of cotton to chronic doses of ozone and sulfur dioxide

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 334
the relationship between the yield of cotton crop 'stoneville 213' and application of chronic doses of sulfur dioxide and ozone was investigated. 'stoneville 213' was exposed in open-top field chambers to five doses of o//3 (seasonal 7 h d** $minus$ **1 means from 0. 026-0. 104 $mu$ l l** $minus$ **1) and four doses of so//2 (seasonal 4 h d** $minus$ **1 means from 0. 00-0. 35 $mu$ l l** $minus$ **1), singly, and in all possible combinations. stoneville 213 was sensitive to o//3-induced yield decrease and regression analyses provided models describing this relationship. compared to cotton yield in charcoal-filtered-air chambers, the measured decrease of cotton yield at levels of o//3 that occurred during the 1982 season at raleigh, nc was 11. doses of so//2 at levels greater than those occurring regionally did not significantly affect cotton and did not significantly change cotton response to o//3. (edited author abstract) 20 refs
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