Response of two Canada thistle (Cirsium arvense) varieties to herbicides
Author(s) -
Zand Eskandar,
Hugh J. Beckie,
C. D. Myhre,
H. Loeppky
Publication year - 2002
Publication title -
canadian journal of plant science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.338
H-Index - 59
eISSN - 1918-1833
pISSN - 0008-4220
DOI - 10.4141/p01-168
Subject(s) - thistle , cirsium arvense , hexazinone , biology , agronomy , weed control
Field observations suggested that control of Canada thistle variety horridumby hexazinone was greater than that of variety integrifolium. To confirm these observations, the response of these two varieties to hexazinone and 13 other herbicides was examined under controlled environment conditions. The tolerance of the variety integrifoliumto hexazinone was 40% greater compared with the variety horridum. Differences in shoot growth response between the two varieties were not detected from any of the other herbicides. Key words: Canada thistle, Cirsium arvense, variety horridum, variety integrifolium, hexazinone
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