Full TGIF Record # 733
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Publication Type:
i
Refereed
Author(s):Peterson, S. C.; Parochetti, J. V.
Author Affiliation:Peterson: Program Specialist, U. S. Dep. Agr., Agric. Stab. Cons. Serv.; College Park, MD; Parochetti: Assoc. Prof., Dep. of Agron., Univ. of Maryland, College Park, MD
Title:Canada thistle (Cirsium arvense) control in timothy (Phleum pratense) and red clover (Trifolium pratense) sward
Source:Weed Science. Vol. 26, No. 3, May 1978, p. 215-220.
Publishing Information:Champaign, IL: Weed Science Society of America
# of Pages:6
Related Web URL:http://www.jstor.org/stable/info/4042702
    Last checked: 05/02/2014
    Notes: Abstract only
Keywords:TIC Keywords: Cirsium arvense; Phleum pratense; Trifolium pratense; Dicamba; Picloram; 2,4-D; Necrosis
Abstract/Contents:"Two of three herbicides were applied repetitively in each of the years to a dense infestation of Canada thistle [Cirsium arvense (L.) Scop.] in timothy (Phleum pratense L.) and red clover (Trifolium pratense L.) sward in Carroll County, Maryland during the period 1969 to 1971. Picloram (4-amino-3,5,6-tricloropicolinic acid), eliminated red clover from the sward after the first year, and controlled 95 to 100% of the Canada thistle in the third year of treatment. The addition of a non-phytotoxic oil to picloram did not improve its efficiency. Dicamba (3,6-dichloro-o-anisic acid) reduced 57 to 87% of the red clover and 72% of the Canada thistle in the first year at a dosage of 1.12 kg/ha, but effected only 42% control in the third year of treatment. Both an amine and ester formulations of 2,4-D [(2,4-dichlorophenoxy) acetic acid] effected variable Canada thistle control and reduced the red clover stand 10 to 15% following the first application. The timothy yield was not significantly reduced during the 3 years of repeated application of all herbicides, but some necrosis of leaves was noted with dicamba and the high rate of 2,4-D. Soybeans [Glycine max (L.) Merr. 'Delmar'] planted 1 yr following the last picloram application had curled leaves initially, but outgrew the injury. Soybeans planted 2 yr following the last application of the herbicides showed no significant reduction in yield indicating herbicide residues had been reduced to tolerable levels."
Language:English
References:27
See Also:Other items relating to: 2, 4 - D in Turf
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Peterson, S. C., and J. V. Parochetti. 1978. Canada thistle (Cirsium arvense) control in timothy (Phleum pratense) and red clover (Trifolium pratense) sward. Weed Sci. 26(3):p. 215-220.
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http://www.jstor.org/stable/4042702
    Last checked: 05/02/2014
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http://www.jstor.org/stable/pdfplus/4042702.pdf
    Last checked: 05/02/2014
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    Access conditions: Item is within a limited-access website
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MSU catalog number: SB 610 .W38
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