| |
| Publication Type:
| Report |
|---|
| Content Type: | Abstract or Summary only |
|---|
| Author(s): | McCarty, L. B.;
Lowe, D. B.;
Whitwell, T. |
|---|
| Author Affiliation: | Department of Horticulture, Clemson University, Clemson, SC 29634-0375 |
|---|
| Title: | Identifying important Cyperus and Kyllinga species in southern turfgrasses |
|---|
| Meeting Info.: | 50th Annual Meeting, Houston, TX, January 20-22, 1997 |
|---|
| Source: | Southern Weed Science Society Proceedings. Vol. 50, January 1997, p. 70-71. |
|---|
| Publishing Information: | Champaign, IL: Southern Weed Science Society. |
|---|
| # of Pages: | 2 |
|---|
| Abstract/Contents: | "Sedges (primary, Cyperus spp.) and Kyllinga spp. are major weed problems in fine turf. Reasons for this include: (1) a marked increase in preemergence herbicide use specifically targeted for annual grass control which are not effective on sedges and kyllingas; (2) a marked decrease of postemergence herbicides for annual grass and broadleaf weed control which also suppressed sedge/kyllinga. These include the arsenical herbicides MSMA and DSMA and the phenoxies herbicides 2, 4-D and others; and, (3) the South has had consecutive "wet" summers in terms of excessive rainfall, conditions which typically favor sedge/kyllinga establishment and encroachment. Taxonomically, a major distinguishing characteristic between nutsedges and kyllinga is the presence or absence of tubers (or nutlets). Perennial nutsedges reproduce primarily by tubers while annual sedges and kyllingas spread by seed. Perennial kyllinga species lack tubers, and reproduce vegetatively by rhizomes and possibly stolons, and less so, by seed. The literature indicates much confusion and overlap of Cyperus and Kyllinga spiecies. The primary species in turf include: Cyperus spp. perennials: C. rotundus L., "Purple" nutsedge; C. esculentus L., "Yellow" nutsedge; C. globulosus Aubl., [Cyperus croceus Vahl], "Globe" sedge; C. retrorsus Champm., "Cyclindric" sedge, annuals: C. compressus L., "Annual" or "Water" sedge; C. polystachyos Rottb., "Texas" sedge; C. iris L., "Rice Flat" sedge, Kyllinga spp. perennials: K. brevifolia Rottb.=C. brevifolius (Rottb.) Hassk., "Perennial" or "Green" kyllinga; K. gracillima Miq.=K. brevifolioides, proposed common name: "Green" kyllinga (subspecies); K. nemoralis Endl.=C. kyllinga, "White" kyllinga, annuals: K. pumila Michx.=C. Tenuifolius, proposed common name:???; K. squamulata Thonn (Vahl)=C. metzii, proposed common name: "Spur" kyllinga; K. odorata Vahl=C. sesquiflorus (Torr.) Mattf. & Kuekenth, "Annual" kyllinga, however, proposed changed common name to "Sweet" kyllinga (note: K. odorata acts as an annual in the U.S. but is a short-lived perennial in the Tropics). Currently, . nemoralis (or "White" kyllinga) is thought to be restricted in the U.S. to Hawaii. However, it probably can survive in portions of the mainland including Southern California and South Florida. Postemergence control options include: bentazon; MSMA/DSMA; imazaquin alone and combined with MSMA/DSMA; halosulfuron; and potentially, sulfetrazone. For perennial species, single applications rarely provide acceptable (>90%) control, therefore, repeat applications are needed 1 to 4 weeks following the initial treatment. |
|---|
| Language: | English |
|---|
| References: | 0 |
|---|
| Note: | This item is an abstract only! |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
McCarty, L. B., D. B. Lowe, and T. Whitwell. 1997. Identifying important Cyperus and Kyllinga species in southern turfgrasses. South. Weed Sci. Soc. Proc. 50:p. 70-71. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=42203 |
| If there are problems with this record, send us feedback about record 42203. |
| Choices for finding the above item: |
|---|
| 
MSU catalog number: SB 611 .S6 v. 50 |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
