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2017 Annual Meeting | Oct. 22-25 | Tampa, FL

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105958 Preemergence Herbicide Effects upon Hybrid Bermudagrass Root Growth and Architecture.

Poster Number 800

See more from this Division: C05 Turfgrass Science
See more from this Session: Turf Management: Pests Poster (includes student competition)

Tuesday, October 24, 2017
Tampa Convention Center, East Exhibit Hall

Erick Begitschke, Plant and Soil Sciences, Mississippi State University, Stakville, MS, James D. McCurdy, 117 Dorman Hall, PO Box 9555, Mississippi State University, Mississippi State University, MS, Te Ming (Paul) Tseng, Plant and Soil Sciences, Mississippi State University, Starkville, MS, Casey Barickman, Plant and Soil Sciences, Mississippi State University, Verona, MS, Barry Stewart, Plant and Sol Sciences, Mississippi State University, Mississippi State, MS, Christian M. Baldwin, Mississippi State University, Mississippi State, MS, Michael Richard, Box 9555, Mississippi State University, Mississippi State, MS and Maria Tomaso-Peterson, Biochemistry, Molecular Biology, Entomology, and Plant Pathology, Mississippi State University, Mississippi State, MS
Poster Presentation
  • 2017 CSSA GH Poster.pdf (859.3 kB)
    • Abstract:

    PREEMERGENCE HERBICIDE EFFECTS UPON HYBRID BERMUDAGRASS ROOT GROWTH AND ARCHITECTURE

    By

    Erick Begitschke, Jay McCurdy, Paul Tseng, Casey Barickman, Barry Stewart, Christian Baldwin, Michael Richard, Maria Tomaso-Peterson

    Abstract:

    Preemergence herbicides may negatively affect hybrid bermudagrass establishment. However, little is known about the effects upon root architecture and development. Research was conducted to evaluate the effects of atrazine (1.12 kg ha-1), atrazine (1.12 kg ha-1) + S-metolachlor (0.86 kg ha-1), dithiopyr (0.56 kg ha-1), flumioxazin (0.286 kg ha-1), indaziflam (0.033 kg ha-1), liquid and granular applied oxadiazon (2.24 kg ha-1), S-metolachlor (2.78 kg ha-1), pendimethalin (1.66 kg ha-1), prodiamine (0.594 kg ha-1), and simazine (2.24 kg ha-1) on ‘Latitude 36’ hybrid bermudagrass growth. Other than atrazine (31 to 40 d) and granular applied oxadiazon (23 to 29 d), treatments increased days required to reach 50% cover (24 to 33 d). All herbicide treatments reduced root mass when harvested 6 WAT relative to the nontreated. By 10 WAT, all treatments reduced root mass in run 1, but during run 2, only prodiamine (0.293 kg m-3), pendimethalin (0.334 kg m-3), simazine (0.405 kg m-3), atrazine + S-metolachlor (0.394 kg m-3), liquid applied oxadiazon (0.379 kg m-3), and indaziflam (0.154 kg m-3) reduced dry root mass compared to the nontreated (0.861 kg m-3). At 4 WAT, all treatments other than simazine (7.0 mm cm-3) and granular applied oxadiazon (11.1 mm cm-3) reduced root length when compared to the nontreated (10.4 mm cm-3). By 10 WAT, only dithiopyr (14.7 mm cm-3), S-metolachlor alone (14.9 mm cm-3), and indaziflam (9.9 mm cm-3) reduced root length when compared to the nontreated (22.1 mm cm-3). No differences were detected in the total amount of nonstructural carbohydrates within the roots in either run of the experiment. Results suggest that hybrid bermudagrass roots were able to grow out of the initial herbicidal injury for every treatment other than indaziflam by 10 WAT; however, future research should evaluate tensile strength of treated sod.

    See more from this Division: C05 Turfgrass Science
    See more from this Session: Turf Management: Pests Poster (includes student competition)

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