| |
| Web URL(s): | http://www.bioone.org/perlserv/?request=get-document&doi=10.1614%2FWT-03-109R
Last checked: 03/29/2006 |
|---|
| Publication Type:
| Refereed |
|---|
| Author(s): | Williams, Walker;
Wehtje, Glenn;
Walker, Robert H. |
|---|
| Author Affiliation: | Walker: Former Graduate Research Assistant; Wehtje and Walker: Professors, Agronomy and Soils Department, Auburn University, Auburn University, Alabama |
|---|
| Title: | Quinclorac: Soil behavior and foliar vs. root absorption by torpedograss (Panicum repens) |
|---|
| Section: | Research
Other records with the "Research" Section
|
|---|
| Source: | Weed Technology. Vol. 18, No. 3, July-September 2004, p. 626-633. |
|---|
| Publishing Information: | Champaign, IL: Weed Science Society of America. |
|---|
| # of Pages: | 8 |
|---|
| Keywords: | TIC Keywords: Quinclorac; Foliar uptake; Roots; Panicum repens; Herbicide evaluation; Herbicide translocation; Soil sorption; Mobility; Soil pH
|
|---|
| Abstract/Contents: | "Selective placement studies were conducted under greenhouse conditions to determine the relative importance of root vs. foliar absorption of postemergence-applied quinclorac by torpedograss. Foliar + soil and soil-only applications were more effective than foliar-only in reducing torpedograss foliage at 4 wk after treatment (WAT). However, foliar-only and foliar + soil were more effective than soil-only in suppressing regrowth at 10 WAT. Quinclorac foliqar absorption by torpedograss and subsequent translocation, as determined with radiotracer techniques, was minimal. After 72 h, only 26% of the applied quiniclorac had been absorbed, and 13.7% of the amount applied remained within the leaf. Only 0.3% of applied was recovered in the roots, and none was detected in the developing rhizomes. Quinclorac was readily root absorbed and translocated. After 6 h, a 26.7 μg/ plant dose of quinclorac had been absorbed, and 54% of this quantity remained in the roots; the remaining 46% having been translocated throughout the plant. The youngest leaf and the immature rhizomes accumulated 5 and 9% of the amount absorbed, respectively. Quinclorac was not readily soil sorbed as determined by soil solution experiments. Quinclorac was displaced nearly concomitant with the wetting front in soil chromotography. Soil solution concentration and soil mobility were greater at pH 6.7 than at 5.7. Results establish that consistent control of torpedograss with quinclorac is dependent on soil entry and root absorption. Unfortunately, the propensity of quinclorac to be water displaced could negatively affect this control." |
|---|
| Language: | English |
|---|
| References: | 20 |
|---|
| See Also: | Other items relating to: Foliar Feeding & Uptake |
|---|
| Note: | Tables |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Williams, W., G. Wehtje, and R. H. Walker. 2004. Quinclorac: Soil behavior and foliar vs. root absorption by torpedograss (Panicum repens). Weed Technol. 18(3):p. 626-633. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=110217 |
| If there are problems with this record, send us feedback about record 110217. |
| Choices for finding the above item: |
|---|
| Web URL(s):
http://www.bioone.org/perlserv/?request=get-document&doi=10.1614%2FWT-03-109R
Last checked: 03/29/2006 |
| 
MSU catalog number: SB 610 .W44 |
| Find from within TIC:
Digitally in TIC by record number. |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
