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The Herbicidal Activity of Dimethyl Sulfoxide on Purple Nutsedge

W. Powell Anderson and Max P. Dunford
Weeds
Vol. 14, No. 3 (Jul., 1966), pp. 195-197
DOI: 10.2307/4040910
Stable URL: http://www.jstor.org/stable/4040910
Page Count: 3
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The Herbicidal Activity of Dimethyl Sulfoxide on Purple Nutsedge
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Abstract

Dimethyl sulfoxide, soil-incorporated at rates of 20 to 240 gpa, prevented the growth of roots and delayed and inhibited the growth of shoots of plants developing from purple nutsedge (Cyperus rotundus L.) tubers for a period of about two months. This effect upon growth occurred only while the tubers and developing plants remained in treated soil; transplanted to untreated soil, subsequent growth of roots and shoots was immediate and normal. The effective soil-residual life of dimethyl sulfoxide was about three months, irrespective of dosage. Dosages of 2 1/2 to 7 1/2 gpa had no effect upon the growth of the nutsedge plants. At 10 and 15 gpa, the inhibitory effect of dimethyl sulfoxide becomes apparent.

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