| |
| Web URL(s): | http://www.newss.org/proceedings/proceedings_1996_vol50.pdf#page=164
Last checked: 07/24/2013
Requires: PDF Reader
Notes: Item is within a single large file |
|---|
| Publication Type:
| Report |
|---|
| Content Type: | Abstract or Summary only |
|---|
| Author(s): | Dernoeden, P. H. |
|---|
| Author Affiliation: | Professor, Department of Agronomy, University of Maryland, College Park, MD |
|---|
| Title: | Annual grass weed control in fairways and roughs in northern and transition zone regions |
|---|
| Meeting Info.: | Williamsburg, VA; January 2-5, 1996 |
|---|
| Source: | Proceedings of the 50th Annual Meeting of the Northeastern Weed Science Society. Vol. 50, 1996, p. 164. |
|---|
| Publishing Information: | College Park, MD: Northeastern Weed Science Society |
|---|
| # of Pages: | 1 |
|---|
| Keywords: | TIC Keywords: Annual grass weeds; Golf fairways; Golf rough; Preemergence herbicides; Recommendations; Weed control
|
|---|
| Abstract/Contents: | "The primary annual grass weeds in fairways and roughs in the Northeastern U.S. include crabgrass (Digitaria spp.), paticulary smooth crabgrass (D. ischaemum [schreb.] Muhl.), goosegrass (Eleusine indica[L.] Gaertn), and occasionally foxtails (Setaria spp.). Annual blue grass (Poa annua L.) is an enigmatic weed with genetically annual and perennial biotypes. Dalliasgrass (Paspalum dilatatum Poir.) and smooth paspalum (P. laeve Michx.) are warm-season perennial grasses that are often confused as being annuals. Seed of crabgrass begin to germinate in late spring with peak germination periods occurring in May and June. Goosegrass seedlings appear in June, but high levels of seed germination occurs in July and August. Annual bluegrass seed germination begins in September, ceases during winter if soils become frozen, and resumes germination in March or April. Little or no P. annua seed germination occur during summer. Where a chronic problem, the most effective approach to crabgrass, goosegrass and foxtail control is through the application(s) of preemergence herbicides. The most commonly used products on fairways and roughs where turfgrasses other than creeping bentgrass are grown include the following: benefin, bensulide, DCPA, dithiopyr, oxadiazon, pendimethalin, prodiamine, and a pre-packageed mix of benefin plus trifluralin. Bensulide and DCPA are used less commonly because the provide poor goosegrass control. Only bensulide a bensulide plus oxadiazon pre-packaged mix, dithiopyr and prodiamine are labeled for using on creeping bentgrass fairways. There is great variation in recommended rates of herbicides among northern, transition zone and southern regions. Generally in northern regions low labeled rates applied once prior to weed seed germination provides satisfactory control; whereas, sequential applications are suggested for most products in the transition zone. Postemergence crabgrass and foxtail can be achieved effectively with fenoxaprop, DSMA and MSMA. For the organic arsenicals, lower rates applied in multiple applications are suggested to reduce potential discoloration to cool-season grasses. Fenoxaprop can stunt and discolor cool-season grasses, paticularly when applied during cool and moist periods. On creeping bentgrass fairways, fenoxaprop may be applied at low rates in multiple applications beginning when crabgrass or goosegrass are in the 1 to 3 leaf stage. Fenoxaprop, however, is phytotoxic to bermudagrass and may cause long periods of chlorosis in zoysiagrass fairways. Fenoxapropprovides effective postemergence goosegrass control; whereas, the organic arsenicals are ineffective. Diclofop is an excellent goosegrass graminicide, but may only be used on bermudagrass in some southern states. Diclofop is phytotoxic to most other turfgrasses. Annual biotypes of P. annua can be safely and effectively controlled in perennial ryegrass with one or two late fall applications of ethofumesate. Ethofumesate may be used at lower rates to partially control P. annua in creeping bentgrass and Kentucky bluegrass. Ethofumesate is phytotoxic to bermudagrass, zoysiagrass and many other cool-season grasses. Most preemergence herbicides can reduce annual bluegrass seed germination if applied in late summer. The level of control, however, is normally unaccaptable . Futhermore, use of preemergence herbicide on cool-season turf in late summer is not recommended because it would likely conflict with overseeding practices. Bermudagrass fairways, however, in more southern locations may be treated with either oxadiazon, prodiamine or other products for preemergence P. annua control." |
|---|
| Language: | English |
|---|
| References: | 0 |
|---|
| Note: | This item is an abstract only! |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Dernoeden, P. H. 1996. Annual grass weed control in fairways and roughs in northern and transition zone regions. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 50:p. 164. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=42180 |
| If there are problems with this record, send us feedback about record 42180. |
| Choices for finding the above item: |
|---|
| Web URL(s):
http://www.newss.org/proceedings/proceedings_1996_vol50.pdf#page=164
Last checked: 07/24/2013
Requires: PDF Reader
Notes: Item is within a single large file |
| 
MSU catalog number: SB 610 .N62 v. 50 |
| Find from within TIC:
Digitally in TIC by file name: newss1996 |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
