Effects of Glyphosate on Growth and the Chlorophyll and Carotenoid Levels of Yellow Nutsedge (Cyperus esculentus)
- 1 September 1985
- journal article
- Published by Cambridge University Press (CUP) in Weed Science
- Vol. 33 (6) , 751-754
- https://doi.org/10.1017/s0043174500083284
Abstract
Growth and the chlorophyll and carotenoid contents were measured in greenhouse-grown yellow nutsedge (Cyperus esculentusL. ♯ CYPES), following treatment with glyphosate [N-(phosphonomethyl)glycine]. Herbicide was applied as a foliar spray at concentrations of 0.1, 1.0, 5.0, and 10.0 mM. After 2 weeks, growth was inhibited, and chlorosis and leaf apex necrosis were observed. Plant height was reduced, leaf fresh weight was decreased by 40%, and leaf dry weight was slightly affected. Rhizome, tuber, and secondary shoot formation was strongly inhibited, but root development was not affected by glyphosate treatment. With the 10-mM treatment, dry weight of the underground system was reduced by 80%. Chlorophyll and carotenoid levels were decreased by 52 and 54%, respectively, following glyphosate treatment.Keywords
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