| |
| Web URL(s): | http://www.newss.org/proceedings/proceedings_2004_vol58.pdf#page=3
Last checked: 07/23/2013
Requires: PDF Reader
Notes: Item is within a single large file |
|---|
| Publication Type:
| Report |
|---|
| Content Type: | Abstract or Summary only |
|---|
| Author(s): | Curran, W. S.;
Loux, M. M. |
|---|
| Author Affiliation: | Curran: Penn State University, University Park, Pennsylvania; Loux: Ohio State University, Columbus, Ohio |
|---|
| Title: | Dandelion control as influenced by spring application timing |
|---|
| Section: | Agronomy section
Other records with the "Agronomy section" Section
|
|---|
| Meeting Info.: | Marriott Cambridge Center, Cambridge, Massachusetts: January 5-8, 2004 |
|---|
| Source: | Proceedings: NortheasternWeed Science Society. Vol. 58, 2004, p. 3. |
|---|
| Publishing Information: | Ithaca, NY: Northeastern Weed Science Society |
|---|
| # of Pages: | 1 |
|---|
| Keywords: | TIC Keywords: 2,4-D + Glyphosate; Application timing; Herbicide application; Herbicide efficacy; Taraxacum officinale; Weed control
|
|---|
| Abstract/Contents: | "Three herbicide treatments were applied at different times in the spring at four locations over two years in Pennsylvania and at two locations in Ohio for control of dandelion (Taraxacum officinale Weber in Wiggers.). The herbicides 2,4-D LVE, glyphosate, and 2,4-D plus glyphosate were applied using a CO2 backpack sprayer. Glyphosate and 2,4-D were applied at 0.75 and 1.0 lb ae/acre, respectively at 20 GPA up to six different times starting in early April and ending the third week of May. Dandelion rosettes ranged from 3 to 5 inches in diameter in central Pennsylvania up to 12 inches in diameter in Ohio at the early April timing. Fall timing was included at three locations in the 2003 experiment. Visual estimates of percent control were taken several times during the season as well as weed density and/or biomass at some locations. The study was conducted as a randomized complete block with three replications. Control data were analyzed for significance looking at location, treatment and herbicide timing differences. The fall treatments averaged 84% at the mid-May evaluation. Emergence of new seedling dandelion reduced fall control as the season progressed at the Pennsylvania locations. In general, the fall-applied glyphosate and glyphosate plus 2,4-D treatments provided better control than 2,4-D. Control with the spring timings averaged 76% at the June evaluation, but both herbicide and timing had an impact. In general, the early applications timings were less effective than later; by June evaluation the May applications provided greater than 80% control, while control in the early April timing was 64%. When averaged over location and timing, 2,4-D applied in the spring provided 68% control, glyphosate 75% control, and glyphosate plus 2,4-D, 87% control of dandelion. In 2003, dandelion control from the spring applications averaged 63% at the NW Ohio location, 85% at the western Ohio location, 80% at the central Pennsylvania location, and 78% in southeastern Pennsylvania. In 2003, Ohio had almost 10 inches of rainfall in April and May, while the Pennsylvania locations had 6.6 to 7.3 inches. Frequent showers may have impacted the control of some treatments and may account for some variability between locations and treatment timings. Degree day (DD) accumulation, base temperature of 40 F, from March through July ranged from a low of about 2500 in central Pennsylvania to a high 3100 in western Ohio. Differences in DD across locations, probably does not account for the variability observed. These data show that fall application is an effective time for control of dandelion and that the performance of spring application is variable. In general, dandelion control was better with the May applications compared to the early and mid April timings and the combination of glyphosate plus 2,4-D tended to be better than either herbicide alone. This study also shows that regardless of herbicide or application timing, an integrated approach that combines several tactics will be necessary for long-term dandelion control." |
|---|
| Language: | English |
|---|
| References: | 0 |
|---|
| Note: | This item is an abstract only! |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Curran, W. S., and M. M. Loux. 2004. Dandelion control as influenced by spring application timing. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 58:p. 3. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=94861 |
| If there are problems with this record, send us feedback about record 94861. |
| Choices for finding the above item: |
|---|
| Web URL(s):
http://www.newss.org/proceedings/proceedings_2004_vol58.pdf#page=3
Last checked: 07/23/2013
Requires: PDF Reader
Notes: Item is within a single large file |
| 
MSU catalog number: SB 610 .N62 v. 57 |
| Find from within TIC:
Digitally in TIC by file name: newss2004 |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
