| |
| Publication Type:
| Report |
|---|
| Author(s): | Lewis, W. M. |
|---|
| Author Affiliation: | Crop Science Department, North Carolina State University, Raleigh, NC |
|---|
| Title: | Application timing for preemergence crabgrass control in turf |
|---|
| Section: | Weed control in turf, pasture, and rangeland
Other records with the "Weed control in turf, pasture, and rangeland" Section
|
|---|
| Meeting Info.: | Nashville, Tennessee: January 16-18, 1989 |
|---|
| Source: | Proceedings: Southern Weed Science Society. Vol. 42, 1989, p. 139. |
|---|
| Publishing Information: | Champaign, Illinois: Southern Weed Science Society |
|---|
| # of Pages: | 1 |
|---|
| Abstract/Contents: | "A lawn care operator may service several hundred homeowners which requires preemergence herbicide applications to be spread out over a 4 to 8 week period. In these studies, we examined the potential application window for selected preemergence herbicides that control smooth crabgrass and goosegrass in turf. Also a single herbicide application was compared to split application. Studies were conducted in 1987 and 1988 on a common bermudagrass golf fairway in Oxford, NC. Herbicides evaluated with single and split rates in kg/ha were: bensulide at 14 and 8.4 + 8.4, benefin + oryzalin at 3.4 and 2.2 + 2.2, oryzalin at 3.4 and 1.7 + 1.7, oxadiazon at 3.4 and 1.7 + 1.7, pendimethalin at 3.4 and 1.7 + 1.7, prodiamine at 1.1 and 0.8 + 0.3. Application dates for single applications were: February 11 and 25 and March 11 and 25 and for split applications were February 11 + April 22, February 25 + May 7, March 11 + May 7, and March 25 + May 21. March 25 was considered to be the ideal application time for this location. A randomized complete block design with 4 replications was used. Plot size was 1.5 by 4.6 cm. Bensulide, benefin + oryzalin, oryzalin, pendimethalin, and prodiamine provided season-long smooth crabgrass control (93+%). Season-long control was rated approximately 27 weeks after the application on March 25. Control was similar for each of the four application dates, indicating a safe window of application of at least six weeks. Oxadiazon gave early season control, 12 weeks after treatment, of 97% but late season control dropped to 67%. Using a split application of a herbicide did not have any advantage over a single application in controlling smooth crabgrass because control was similar for each application method. For goosegrass, benefin + oryzalin, pendimethalin, prodiamine, and oryzalin gave season-long control of 89 to 94%. Oxadiazon provided 77 % control and bensulide 17%. Similar to the results obtained for smooth crabgrass control, goosegrass control was not affected by the four different dates of initiating the applications. Goosegrass control, however, was improved by 2 to 15% with split applications. These results indicate to the lawn care operator that satisfactory control of smooth crabgrass and goosegrass can be obtained with certain preemergence herbicide applied seven to eight weeks before expected smooth crabgrass germination. Also split applications tend to improve goosegrass control." |
|---|
| Language: | English |
|---|
| References: | 0 |
|---|
| Note: | "Finding a common ground"
This item is an abstract only! |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Lewis, W. M. 1989. Application timing for preemergence crabgrass control in turf. South. Weed Sci. Soc. Proc. 42:p. 139. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=228371 |
| If there are problems with this record, send us feedback about record 228371. |
| Choices for finding the above item: |
|---|
| 
MSU catalog number: b2207931 |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
