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| Publication Type:
| Refereed |
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| Author(s): | Reddy, Kirshna N.;
Bendixen, Leo E. |
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| Author Affiliation: | Ohio State University and University of Massechusetss (Respectively) |
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| Title: | Toxicity, Absorption, and Translocation of Soil-Applied Chlorimuron in Yellow and Purple Nutsedge (Cyperus esculentus and C. rotundus). |
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| Source: | Weed Science. Vol. 37, No. 2, March 1989, p. 147. |
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| Publishing Information: | Champaign, IL: Weed Science Society of America |
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| Keywords: | TIC Keywords: Distribution; Phytotoxicity; Preemergence herbicides; Toxicity; Absorption; Translocation; Cyperus esculentus; Cyperus rotundus; Tuber sprouting
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| Abstract/Contents: | "The activity of soil-applied chlorimuron in yellow and purple nutsedge was studied in greenhouse and laboratory experiments. Soil-applied chlorimuron decreased tuber sprouting by 80% in yellow nutsedge and by 30% in purple nutsedge at 60 g ai/ha. Chlorimuron decreased shoot emergence by 53 to 83% and shoot growth by 85 to 99% in both species at rates as low as 10 g/ha. Previous exposure to tubers to chlorimuron-treated soil reduced tuber resprouting by 20 to 25% in herbicide-free soil at 60 g/ha in both species. There was no rate response in shoot emergence from tubers previously exposed to chlorimuron, but shoot dry weight decreased by 60 to 81% in both species at 60 g/ha. At 12 h after application, 47% of the total 14C applied to the shoot in yellow nutsedge and 32% of that applied in purple nutsedge were absorbed. However, less than 1% of the total 14C applied was translocated out of the shoot and into the roots and tuber in either species. In both species, 1.3% of the 14C applied to the roots and tuber was absorbed and 0.1% was translocated out of the roots and tuber into the shoot at 12 h after application. The pattern of root- and tuber-absorbed 14C distribution indicated that the 14C absorbed by the tuber remained in the tuber and that Absorbed by the roots was translocated to the shoots." |
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| Language: | English |
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| References: | 0 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Reddy, K. N., and L. E. Bendixen. 1989. Toxicity, Absorption, and Translocation of Soil-Applied Chlorimuron in Yellow and Purple Nutsedge (Cyperus esculentus and C. rotundus).. Weed Sci. 37(2):p. 147. |
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MSU catalog number: SB 610 .W38 |
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