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1 April 2012 Selective Exposure of Yellow Nutsedge (Cyperus esculentus), Purple Nutsedge (Cyperus rotundus), and False Green Kyllinga (Kyllinga gracillima) to Postemergence Herbicides
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Abstract

Greenhouse experiments were conducted to evaluate the effect of selective herbicide placement on sedge shoot number, shoot weight, and root weight. Sulfentrazone, sulfosulfuron, and trifloxysulfuron were applied to soil only, foliage only, or soil plus foliage. Sulfentrazone provided greater yellow nutsedge and false green kyllinga growth reduction compared to purple nutsedge. Sulfosulfuron provided greater purple nutsedge and false green kyllinga growth reduction compared to yellow nutsedge; these species responded similarly to trifloxysulfuron. Soil and soil plus foliar applications provided the highest level of growth suppression, indicating herbicide–soil contact is required for optimum sedge control with these three herbicides. Future research should evaluate techniques that optimize herbicide–soil contact to improve herbicide efficacy.

Nomenclature: Sulfentrazone; sulfosulfuron; trifloxysulfuron; false green kyllinga, Kyllinga gracillima Miq.; purple nutsedge, Cyperus rotundus L.; yellow nutsedge, Cyperus esculentus L.

Weed Science Society of America
Travis W. Gannon, Fred H. Yelverton, and Lane P. Tredway "Selective Exposure of Yellow Nutsedge (Cyperus esculentus), Purple Nutsedge (Cyperus rotundus), and False Green Kyllinga (Kyllinga gracillima) to Postemergence Herbicides," Weed Technology 26(2), 294-299, (1 April 2012). https://doi.org/10.1614/WT-D-11-00047.1
Received: 4 April 2011; Accepted: 1 December 2011; Published: 1 April 2012
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