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| Web URL(s): | http://www.swss.ws/wp-content/uploads/docs/2012 Proceedings-SWSS.pdf#page=144
Last checked: 08/07/2013
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Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Flessner, M. L.;
McElroy, J.;
Wehtje, G. R. |
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| Author Affiliation: | Auburn University, Auburn, AL |
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| Title: | Soil versus foliar application of methiozolin and indaziflam for Poa annua control |
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| Section: | Posters
Other records with the "Posters" Section
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| Meeting Info.: | Charleston, South Carolina: January 23-25, 2012 |
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| Source: | 2012 Proceedings, Southern Weed Science Society. Vol. 65, 2012, p. 72. |
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| Publishing Information: | Champaign, Illinois: Southern Weed Science Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Application methods; Biosynthesis; Comparisons; Foliar versus granular applications; Herbicide efficacy; Indaziflam; Methiozolin; Poa annua control; Uptake
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| Abstract/Contents: | "Methiozolin is a new herbicide believed to inhibit cell wall biosynthesis. Methiozolin controls Poa annua through multiple, timely applications. Both foliar and root up-take have been suspected, but the best control is believed to be achieved through soil application. This evidence may indicate that root-absorption leads to better control. However, there is no published, peer-reviewed research on the matter. Greenhouse experiments were conducted to evaluate Poa annua control from POST applied soil-only, foliage-only, and soil + foliage, and from PRE applied methiozolin. Indaziflam (Specticle) inhibits cellulose biosynthsis and exhibits excellent Poa annua control when applied PRE, with some limited POST activity. Therefore, indaziflam was applied in the same manner as methiozolin for comparison. PRE and POST treatments included methiozolin at 1680 and 3360 g ai ha-1 and indaziflam at 175 and 350 g ai ha-1. PRE, foliar-only, and foliar + soil treatments were applied over-the-top in a conventional manner using a moving-belt sprayer calibrated to deliver 280 L ha-1. Foliar-only treatments were applied after covering the soil surface with perlite. The perlite was removed one day after treatment (DAT). Soil-only treatments were applied by calculating the amount of spray solution that would contact the soil surface. This amount of spray solution was diluted in 10 mL of water and applied to the soil avoiding foliar contact. PRE pots contained 8 Poa annua seeds each. Seeds were scattered on the soil surface and pressed into the soil surface to ensure adequate seed-to-soil contact but seeds were not buried. POST pots contained 5 plants that were approximately 5 to 6 tillers. Overhead irrigation was withheld for 3 DAT. Wickham sandy loam (pH 6.3) was used. Each treatment was replicated 4 times, and the experiment was repeated-in-time. Above ground biomass was harvested 25 DAT. POST applied treatments were harvested again 14 days later (39 DAT). Data were transformed to percent reduction relative to the nontreated (i.e. control) within POST and PRE application types, respectively. PRE and POST data were analyzed separately. Herbicide rate was not significant 25 DAT (P = 0.33) and but was significant 39 DAT (P = 0.02). Data are presented accordingly. Herbicide-by-application type interaction was significant for both POST evaluation dates. Therefore the interaction is discussed. Both rates of both herbicides applied PRE resulted in complete (100%) Poa annua control. Across all POST methiozolin treatments, foliar + soil resulted in the greatest control; foliar-only was better than soil-only at times. Across herbicide rates, methiozolin POST foliar + soil resulted in 35% 25 DAT and 69% 39 DAT. Foliar-only applied methiozolin resulted in better control compared to soil-only 39 DAT (51% compared to 7.2%, respectively). However, this distinction could not be made 25 DAT. Treatments were similar within indaziflam and resulted in <=19 % control 25 DAT and <=53% control 39 DAT. The higher methiozolin rate resulted in better control for foliar + soil and foliar-only 39 DAT, but no differences were observed between indaziflam rates. Methiozolin resulted in better POST Poa annua control than indaziflam, but neither herbicide resulted in complete control. Treatment of younger plants at lesser growth stages would likely result in better control; this is an area of future research. Soil-only applied methiozolin resulted in <=12% reduction across rating dates. This finding is contrary to previous indications that soil application results in superior control relative to foliar application. This study was limited to a single application of methiozolin. Previous research indicates that multiple applications result in better Poa annua control." |
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| Language: | English |
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| References: | 0 |
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| See Also: | See also related dissertation, Interaction of Methiozolin With Soil and Subsequent Influence on Poa annua Control, 2014, R=277446. R=277446 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Flessner, M. L., J. McElroy, and G. R. Wehtje. 2012. Soil versus foliar application of methiozolin and indaziflam for Poa annua control. South. Weed Sci. Soc. Proc. 65:p. 72. |
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| Web URL(s):
http://www.swss.ws/wp-content/uploads/docs/2012 Proceedings-SWSS.pdf#page=144
Last checked: 08/07/2013
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2207931 |
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