| |
| Web URL(s): | http://www.newss.org/proceedings/proceedings_2010.pdf#page=39
Last checked: 07/22/2013
Requires: PDF Reader
Notes: Item is within a single large file |
|---|
| Publication Type:
| Report |
|---|
| Content Type: | Abstract or Summary only |
|---|
| Author(s): | Post, A.;
Goddard, M.;
Askew, S. |
|---|
| Author Affiliation: | Virginia Tech, Blacksburg, VA |
|---|
| Title: | Application placement and humidity effects on mesotrione bioefficacy |
|---|
| Meeting Info.: | Cambridge, MA: January 4-7, 2010 |
|---|
| Source: | Proceedings: 64th Annual Meeting of the NortheasternWeed Science Society. Vol. 64, 2010, p. 23. |
|---|
| Publishing Information: | Ithaca, NY: Northeastern Weed Science Society |
|---|
| # of Pages: | 1 |
|---|
| Keywords: | TIC Keywords: Application methods; Digitaria ischaemum; Festuca arundinacea; Foliar feeding; Herbicide application; Herbicide efficacy; Herbicide evaluation; Herbicide injury; Herbicide trials; Humidity; Mesotrione
|
|---|
| Abstract/Contents: | "Though mesotrione activity has been examined for several crop and weed species, information is inconsistent or lacking on the effects of humidity and soil versus foliar application on bioefficacy. Three experiments conducted at Virginia Tech's Glade Road Research Facility in Blacksburg, VA evaluated mesotrione activity when applied to foliage, soil, and soil plus foliage at 50 and 90% relative humidity (RG). The crop and weed species for this trial were tall fescue (Schedonorus phoenix (Scop). Holub) and smooth crabgrass ( Digitaria ischaemum (Schreb.) Schreb. ex Muhl.), respectively. Tall fescue injury ranged for 0 to 21% and was significant in 6 of 20 comparisons. Application placement significantly influenced tall fescue response to mesotrione; however, RH only influenced tall fescue response to soil plus foliar applications. Mesotrione injured tall fescue most with soil plus foliar followed by foliar only applications, and least with soil only applications. Mesotrione applied to soil and foliage injured tall fescue 2 to 4% at 50% RH and 8 to 21% at 90% RH. For smooth crabgrass, application placement significantly influenced plant response to mesotrione. Mesotrione effects on smooth crabgrass were influenced by RH only when applied exclusively to foliage. Mesotrione injured smooth crabgrass least when applied to foliage only and highest when applied to soil plus foliage. Increasing RH from 50 to 90% caused a 4- to 18-fold increase in smooth crabgrass phytotoxicity when mesotrione was applied to foliage only. At 14 days after treatment when averaged over RG, white leaves comprised 16% of leaves when only foliage was treated and 55 and 62% when applied to soil plus foliage and soil only, respectively. Furthermore, when mesotrione was applied to soil or soil plus foliage, white tissue was found predominately in the youngest two leaves, but when applied to foliage only, white tissue was noted predominately in older leaves. Mesotrione absorbed through roots appears to move quickly to the growing point and has an equal or greater impact on plant phytotoxcity than mesotrione absorbed through foliage. In addition, increasing RH significantly increases injury from foliar absorbed mesotrione, however, the product appears to remain at or near the point of absorption." |
|---|
| Language: | English |
|---|
| References: | 0 |
|---|
| Note: | This item is an abstract only! |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Post, A., M. Goddard, and S. Askew. 2010. Application placement and humidity effects on mesotrione bioefficacy. Proc. Annu. Meet. Northeast. Weed Sci. Soc. 64:p. 23. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=162720 |
| If there are problems with this record, send us feedback about record 162720. |
| Choices for finding the above item: |
|---|
| Web URL(s):
http://www.newss.org/proceedings/proceedings_2010.pdf#page=39
Last checked: 07/22/2013
Requires: PDF Reader
Notes: Item is within a single large file |
| 
MSU catalog number: SB 610 .N62 v. 60 |
| Find from within TIC:
Digitally in TIC by file name: newss2010 |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
