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Volume 3 Issue 1, April 2017



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  • APPLIED TURFGRASS SCIENCE up

    • Zachary Reicher, Matt Sousek and Matt Giese
      Herbicide Programs for Annual Bluegrass ( Poa annua L.) Control in Nebraska
      Core Ideas
      • Research done on annual bluegrass (ABG) control in other areas of the US are likely applicable to Nebraska. However, extreme weather can dramatically affect short-term annual bluegrass cover and emphasize the need for long-term control studies.
      • Three fall POST applications of mesotrione plus prodiamine applied preemergence in August and/or November were effective for ABG control in Kentucky bluegrass fairways. Replacing mesotrione with ethofumesate was also effective when combined with prodiamine in August and November.
      • June applications of bispyribac-sodium at 4 oz/ac was highly effective for controlling ABG in creeping bentgrass fairways, and adding two more fall applications at the same rate improved control slightly, but there was no benefit to raising the rate to 6 oz/ac.
      doi:10.2134/cftm2015.0221
      Crop, Forage and Turfgrass Management 2017 3:
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    • James D. McCurdy, David W. Held, Jonathan M. Gunn and T. Casey Barickman
      Dew from Warm-Season Turfgrasses as a Possible Route for Pollinator Exposure to Lawn-Applied Imidacloprid
      Core Ideas
      • This is the first study to report warm-season turfgrass dew as a potential source for pollinator contact with imidacloprid.
      • Observed imidacloprid concentrations were similar to those reported in creeping bentgrass guttation droplets but less than those typically found in agronomic crops grown from treated seed.
      • Foliar-treated bermudagrass contained more than 10 times the imidacloprid residue of the isolated soil-only treatment.
      doi:10.2134/cftm2016.09.0063
      Crop, Forage and Turfgrass Management 2017 3:
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    • Wendy D. Gelernter, Larry J. Stowell, Mark E. Johnson and Clark D. Brown
      Documenting Trends in Land-Use Characteristics and Environmental Stewardship Programs on US Golf Courses
      Core Ideas
      • A survey of land-use characteristics and environmental stewardship programs on US golf courses was conducted in 2015 as a follow-up to an initial, 2005, study.
      • There were significant acreage reductions in maintained turf, as well as in overseeded and irrigated turf.
      • Trends in decreased acreage came about primarily through a combination of voluntary reductions in acreage and a net decrease in the number of golf facilities in the USA.
      • Variations in land-use allocations occurred regionally, as well as for public compared with private facilities and 9-hole compared with 18-hole facilities, suggesting that climate, economics, and even real estate values are involved in these decisions.
      doi:10.2134/cftm2016.10.0066
      Crop, Forage and Turfgrass Management 2017 3:
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    • Evan J. Alderman, Jared A. Hoyle, Steven J. Keeley and Jack D. Fry
      Buffalograss Divot Recovery as Affected by Nitrogen Source and Rate
      Core Ideas
      • Buffalograss treated with urea to provide 1 lb N/1,000 ft2 achieved 50% divot recovery 6.3 days faster than untreated turf.
      • Polymer-coated urea applications did not improve divot recovery rates compared with the 0 lb N treatment.
      • Under limited irrigation situations and with minimal fertilization, buffalograss exhibits improved divot recovery and, thus, playability in low input turfgrass management systems.
      doi:10.2134/cftm2016.06.0044
      Crop, Forage and Turfgrass Management 2017 3:
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  • APPLIED TURFGRASS SCIENCE—BRIEFS up

    • Cole Thompson, Jack Fry, Ross Braun and Megan Kennelly
      Rough Bluegrass Incidence in a New Tall Fescue Sward as Affected by Seeding Rate and Mowing Height
      Core Ideas
      • Cultural strategies are needed for rough bluegrass control in cool-season lawns.
      • Higher mowing reduces rough bluegrass incidence in new tall fescue swards.
      • Altering seeding rate between 174 to 522 lb/ac does not affect rough bluegrass incidence in new tall fescue swards.
      doi:10.2134/cftm2016.11.0074
      Crop, Forage and Turfgrass Management 2017 3:
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    • Aaron J. Patton and Daniel V. Weisenberger
      Suppressing Zoysiagrass in Cool-Season Turf with Topramezone
      Core Ideas
      • Zoysiagrass is a desirable turf, but it can spread into adjacent areas where it is unwanted.
      • No selective herbicide is registered for use to suppress zoysiagrass in cool-season turf.
      • Our study demonstrated that Pylex (topramezone) provides zoysiagrass supression.
      doi:10.2134/cftm2016.07.0052
      Crop, Forage and Turfgrass Management 2017 3:
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  • CROP MANAGEMENT up

    • Murali K. Darapuneni, Sangamesh V. Angadi, Sultan Begna, Leonard M. Lauriault, M.R. Umesh, Rex Kirksey and Mark Marsalis
      Grain Sorghum Water Use Efficiency and Yield Are Impacted by Tillage Management Systems, Stubble Height, and Crop Rotation
      Core Ideas
      • Tillage, stubble management, and crop rotation are important management decisions for maximizing productivity and profitability in semi-arid environments.
      • Under poor rainfall distribution conditions of sandy loam, most positive effects of tillage-stubble management were partially moderated by a significant rotation × tillage-stubble interaction.
      • Under above-average rainfall conditions of clay loam, yield characteristics were influenced by neither rotation nor tillage-stubble management.
      • Conservation tillage combined with stubble management resulted in greater WUE than conventional tillage with no residue management at one out of two locations.
      doi:10.2134/cftm2016.09.0062
      Crop, Forage and Turfgrass Management 2017 3:
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    • Daniel W. Sweeney
      Twenty Years of Grain Sorghum and Soybean Yield Response to Tillage and N Fertilization of a Claypan Soil
      Core Ideas
      • Long-term sorghum and soybean response to tillage and N on claypan soil is limited.
      • Long-term sorghum yields are often substantially less with no-till on a claypan soil.
      • Subsurface N may result in greater sorghum yield than with surface applications.
      • Anhydrous NH3 applications to sorghum may partially ameliorate the no-till yield penalty.
      • Long-term soybean yields are little affected by tillage on a claypan soil.
      doi:10.2134/cftm2016.10.0070
      Crop, Forage and Turfgrass Management 2017 3:
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    • David L. Jordan, Barbara B. Shew and Rick L. Brandenburg
      Peanut Yield and Injury from Thrips with Combinations of Acephate, Bradyrhizobium Inoculant, and Prothioconazole Applied in the Seed Furrow at Planting
      Core Ideas
      • Acephate and prothioconazole did not adversely impact peanut response to Bradyrhizobium inoculant.
      • Peanut was more responsive to Bradyrhizobium inoculant when planted in fields with no history of peanut production than in fields with recent peanut plantings.
      • Acephate, Bradyrhizobium inoculant, and prothioconazole can be applied simultaneously in the seed furrow without losing effectiveness of individual components.
      doi:10.2134/cftm2016.11.0075
      Crop, Forage and Turfgrass Management 2017 3:
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    • William Stevens, Matthew Rhine and Earl Vories
      Effect of Irrigation and Silicon Fertilizer on Total Rice Grain Arsenic Content and Yield
      Core Ideas
      • Arsenic content in rice was reduced by not flooding fields.
      • Silicon fertilizer did not affect arsenic content in rice.
      • Cultivar and hybrid selection did not affect rice arsenic content.
      doi:10.2134/cftm2016.12.0083
      Crop, Forage and Turfgrass Management 2017 3:
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    • David L. Jordan, Tommy Corbett, Clyde Bogle, Barbara Shew and Rick Brandenburg
      Residual Impact of Tall Fescue on Corn, Cotton, and Peanut Yield
      Core Ideas
      • Sod-based rotations can impact yield of agronomic crops for numerous years after termination.
      • Peanut yield can be affected by length of rotation irrespective of land use.
      • Crop response to previous land use can be influenced by weather patterns.
      doi:10.2134/cftm2016.03.0024
      Crop, Forage and Turfgrass Management 2017 3:
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    • Michael Swoish and Kurt Steinke
      Plant Growth Regulator and Nitrogen Applications for Improving Wheat Production in Michigan
      Core Ideas
      • Averaged across all plant growth regulator (PGR) application rates and timings, grain yields increased 5% across the four study years compared to no PGR application.
      • Plant growth regulator applied at 12 oz/ac decreased lodging 67 to 83% compared to untreated plots in all three years that lodging occurred.
      • Rates >12 oz/ac decreased plant height an additional 1.6 to 1.8 inches but offered no yield benefit.
      • Despite a lack of consistent yield response, if a grower encounters a high-yielding, intensively managed variety that is prone to lodging, then a PGR application might be a crop management tool to consider.
      doi:10.2134/cftm2016.06.0049
      Crop, Forage and Turfgrass Management 2017 3:
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  • FORAGE & GRAZINGLANDS up

    • Paul A. Beck, C. Brandon Stewart, John A. Jennings, Devesh Singh and M. B. Sims
      Performance of Heifers Grazing Bermudagrass Pastures Strip or Solid Seeded with Clovers
      Core Ideas
      • Strip-seeding of clovers into bermudagrass swards resulted in similar clover stand percentage compared with solid planting of clovers.
      • Heifers grazing pastures that were strip seeded performed similarly to heifers grazing clovers that were seeded in solid stands.
      • Red clovers persisted longer into the summer than either white or subterranean clovers.
      • Red clover provided greater animal performance than white and subterranean clovers.
      doi:10.2134/cftm2016.08.0056
      Crop, Forage and Turfgrass Management 2017 3:
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    • Laura K. Snell, John A. Guretzky, Virginia L. Jin, Rhae A. Drijber and Martha Mamo
      Ruminant Urine Increases Uptake but Decreases Relative Recovery of Nitrogen by Smooth Bromegrass
      Core Ideas
      • Forage mass and crude protein increase with N fertilizer rates up to 160 lb/acre in smooth bromegrass pastures.
      • Smooth bromegrass responds even more so to urine from livestock grazing.
      • Managers should encourage even grazing distribution across time to minimize nutrient losses from pastures.
      doi:10.2134/cftm2016.03.0022
      Crop, Forage and Turfgrass Management 2017 3:
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    • Robert W. Mckee, Jennifer J. Tucker, M. Kimberly Mullenix, Christopher Prevatt and Edzard van Santen
      Grazing Evaluation of Annual and Perennial Cool-Season Forage Systems for Stocker Production in the Lower Transition Zone
      Core Ideas
      • A simultaneous grazing evaluation of perennial and annual cool-season forages was conducted in the Southeast.
      • A real-world evaluation used production practices common in the lower transition zone.
      • Cool-season forages can meet stocker nutritional needs and provide high-quality forage for grazing.
      • Novel endophyte tall fescue has greater long-term profit potential compared with these annual forages.
      doi:10.2134/cftm2016.06.0048
      Crop, Forage and Turfgrass Management 2017 3:
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