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| Web URL(s): | https://scisoc.confex.com/crops/2015am/webprogram/Paper92773.html
Last checked: 11/23/2015 |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Jeffries, Matthew D.;
Gannon, Travis W. |
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| Author Affiliation: | Gannon: Crop Science; Jeffries: North Carolina State University, Raleigh, NC |
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| Title: | Effect of edaphic conditions on hybrid bermudagrass injury following indaziflam applications |
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| Section: | C05 turfgrass science
Other records with the "C05 turfgrass science" Section
Turfgrass weeds, diseases, and insect pests
Other records with the "Turfgrass weeds, diseases, and insect pests" Section
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| Meeting Info.: | Minneapolis, Minnesota: November 15-18, 2015 |
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| Source: | ASA, CSSA and SSSA International Annual Meetings. 2015, p. 92773. |
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| Publishing Information: | [Milwaukee, Wisconsin]: [American Society of Agronomy and the Entomological Society of America] |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Cynodon dactylon x Cynodon transvaalensis; Edaphic factors; Edaphic stress; Growth factors; Herbicide evaluation; Hybrid bermudagrasses; Image analysis; Indaziflam; Soil water content
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| Abstract/Contents: | "Since indaziflam's 2010 US registration, sporadic cases of hybrid bermudagrass (HB; Cynodon dactylon L. x C. transvaalensis) injury have been reported; however, causes are not well understood. Field research was conducted to elucidate the effects of various edaphic conditions on HB growth following indaziflam applications. The objectives of the research were to evaluate the effect of soil organic matter (SOM) and soil volumetric water content (VWC) prior to (PRE), and following (POST) fall-only and fall-plus-spring indaziflam applications on HB growth. The effect of SOM was evaluated at two levels, 5.5 and 1.4 % w w-1 at the soil surface in high and low SOM, respectively. The effect of soil VWC was evaluated PRE (2 wk prior to application) and POST (6 wk following application) by covering low VWC plots during irrigation/precipitation events. High VWC plots received > 3.8 cm H2O wk-1. Following indaziflam applications at 50 or 100 g ai ha-1, data collections during non-dormant HB periods included visual cover and injury (0 to 100 %), normalized difference vegetation index (0 to 1), and cover determined via digital image analysis (0 to 100 %). Further, soil cores were collected from plots 70 and 98 d after treatment to quantify indaziflam-soil mobility and bioavailability. Overall, data suggest HB cover was reduced most in low SOM. Soil VWC did not adversely affect HB cover in high SOM; however, PRE/POST high VWC reduced HB cover in low SOM. Bioassay data suggest the increased adverse effects on HB growth in low SOM - high VWC plots was due to increased indaziflam-soil bioavailability, as significant reductions in bioindicator growth were observed at deeper depths than cores collected from corresponding high SOM plots. Data from this research will aid turfgrass managers to effectively use indaziflam without adversely effecting HB growth." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only!
"339-1" |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Jeffries, M. D., and T. W. Gannon. 2015. Effect of edaphic conditions on hybrid bermudagrass injury following indaziflam applications. Agron. Abr. p. 92773. |
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Last checked: 11/23/2015 |
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