| |
| Publication Type:
| Report |
|---|
| Content Type: | Abstract or Summary only |
|---|
| Author(s): | Gregg, M. F.;
Higingbottom, J. K.;
McCarty, L. B. |
|---|
| Author Affiliation: | Department of Horticulture, Clemson University, Clemson, South Carolina |
|---|
| Title: | Annual weed control with oasis (Imazapic + 2,4-D) |
|---|
| Section: | Weed management in turf, pasture, and rangeland
Other records with the "Weed management in turf, pasture, and rangeland" Section
|
|---|
| Meeting Info.: | 55th Annual Meeting, Atlanta, GA: January 28-30, 2002 |
|---|
| Source: | Southern Weed Science Society Proceedings. Vol. 55, 2002, p. 59-60. |
|---|
| Publishing Information: | Champaign, IL: Southern Weed Science Society. |
|---|
| # of Pages: | 2 |
|---|
| Abstract/Contents: | "Annual ryegrass (Lolium multiflorum), little barley (Hordeum pusillum) and field sandspur (Cenchrus incertus) are common annual grass weeds in turf. These species invade poorly maintained sites in sandy soils, such as bermudagrass roadsides and pastures. Field studies were conducted in April and September 2001 to evaluate herbicides for postemergence control of annual ryegrass, little barley and field sandspur. Postemergence annual ryegrass and little barley control was evaluated in a roadside rough turf area in Clemson, S.C. Plot size measured 5 x 5 ft and three replications utilized. Field sandspur control was established in a coastal bermudgrass [bermudagrass] pasture in Hopkins, S.C. Plot size measured 5 x 10 ft with three replications. Experimental design of each study was a randomized complete block with data subjected to ANOVA with means separated using LSD (α=0.05). The annual ryegrass and little barley control study included 8 treatments. Annual ryegrass control was applied on March 9, 2001 to dormant turf, and April 19, 2001 to 50% green turf. Little barley control was applied initially to dormant turf on March 28, 2001 and April 19, 2001 to 50% green turf. Treatments applied on dormant turf included Oasis 6 EC (imazapic + 2,4-D) at 0.18 lb ai/A, 0.28 lb ai/A, or 0.37 lb ai/A; Gramoxone 1.0 SL (paraquat) at 0.18 lb ai/A. Treatments applied to 50% green turf consisted of Oasis 6 EC at 0.18 lb ai/A, 0.28 lb ai/A or 0.37 lb ai/A. All treatments applied to dormant and 50% dormant turf were applied with Optima surfactant at 0.25% V/V. Treatments were applied with a CO2 pressurized sprayer calibrated to deliver 20 gal/A. The sandspur control study included 10 treatments applied on July 2, 2001. Treatments included Oasis 6 EC at 0.18 lb ai/A, 0.18 lb ai/A + 32-0-0, 0.28 lb ai/A, 0.28 lb ai/A + 32-0-0; Drive 75 DF (quinclorac) at 0.75 lb ai/A; MSMA 6.6 EC; and Princep 4L (simazine) at 1.0 lb ai/A. Treatments applied on July 13, 2001 included Image 70 DG (imazaquin) at 0.375 lb ai/A and Image 70 DG at 0.375 lb ai/A + MSMA 6.6 EC at 1.0 lb ai/A. Oasis treatments without fertilizer were applied with Optima surfactant at 0.25% V/V. Oasis treatments with fertilizer delivered 65 lbs. of actual nitrogen/acre. Drive 75 DF & MSMA 6.6 EC treatments were applied with a MSO surfactant at 1.5 pt/A. Treatments were applied with a CO2 pressurized sprayer calibrated to deliver 20 gal/A. Annual ryegrass control was rated May 1, 2001; little barley seedhead suppression rated April 19, 2001; and field sandspur rated August 30, 2001. Weed control was visually rated on a 0-100%, scale with 0% = no control, and 100% = complete control. Seedhead suppression was visually rated with 0% = no suppression and 100% = full suppression. Oasis 6 EC at 0.28 lb ai/A initially applied to dormant turf provided 100% annual ryegrass control on May 1, 2001. Treatments providing >90% control include Oasis 6 EC at 0.18 lb ai/A, 0.37 lb ai/A and Gramoxone 1.0 SL at 0.18 lb ai/A. On May 1, 2001, Oasis 6 EC at 0.18 lb ai/A, 0.28 lb ai/A, and 0.37 lb ai/A provided greater than 70% annual ryegrass control on 50% treated green turf. Oasis 6 EC at 0.37 lb ai/A provided >80% seedhead suppression on little barley while Oasis at 0.28 lb ai/A provided >75% suppression when treatments were initially applied to dormant turf. No measurements were recorded past May 1, 2001 due to drought weather and recent mowing inhibiting true herbicide effects. MSMA 6.6 EC at 2.0 lb ai/A provided >95% control of field sandspur. Image 70 DG at 0.37 lb ai/A + MSMA 6.6 EC at 1.0 lb ai/A and Oasis 6 EC at 0.28 lb ai/A + 32-0-0 provided >60% control. All other treatments provided <35% control at this rating date." |
|---|
| Language: | English |
|---|
| References: | 0 |
|---|
| Note: | This item is an abstract only! |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Gregg, M. F., J. K. Higingbottom, and L. B. McCarty. 2002. Annual weed control with oasis (Imazapic + 2,4-D). South. Weed Sci. Soc. Proc. 55:p. 59-60. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=83547 |
| If there are problems with this record, send us feedback about record 83547. |
| Choices for finding the above item: |
|---|
| 
MSU catalog number: SB 611 .S6 v.54 |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
