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Volume 3 Issue 1, October 2017



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  • CROP MANAGEMENT up

    • Ethan C. Wyatt, Jacob T. Bushong, Natasha E. Macnack, Jeremiah L. Mullock, Randy Taylor and William R. Raun
      Influence of Droplet Size of Foliar-Applied Nitrogen on Grain Protein Content of Hard Red Winter Wheat
      Core Ideas
      • Application of foliar-applied N postanthesis increased grain protein concentration (GPC).
      • Increasing GPC of wheat may allow producers to avoid costly discounts and obtain premiums.
      • No differences were observed in performance among three common agronomic droplet sizes.
      • Improvement in GPC is related to the amount of N measured in the flag leaf after foliar N application.
      • Larger increases in GPC are observed when grain yields are at or above average.
      doi:10.2134/cftm2016.10.0068
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  • REVIEWS up

    • Vijayasatya N. Chaganti and Steve W. Culman
      Historical Perspective of Soil Balancing Theory and Identifying Knowledge Gaps: A Review
      Core Ideas
      • A soil with an ideal basic cation saturation ratio (BCSR) is said to maximize crop yields.
      • Previous studies concluded higher crop yields are possible over a wide range of ratios.
      • Scientific community generally disregards BCSR theory.
      • Soil balancing effects on weeds, soils, and crop quality are critical knowledge gaps.
      doi:10.2134/cftm2016.10.0072
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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
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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
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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
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    • Diana M. Miller, Carl T. Redmond, Michael D. Flythe and Daniel A. Potter
      Evaluation of ‘Jackal’ AR601 (Avanex) and Kentucky-31 Endophytic Tall Fescues for Suppressing Types of Invertebrates that Contribute to Bird Strike Hazard at Airports
      Core Ideas
      • Endophytic grasses have been suggested for reducing bird strike hazard at airports.
      • Besides deterring geese, such grasses might suppress insects that attract birds.
      • Avanex tall fescue has been marketed as a bird-deterrent grass for use at airports.
      • Avanex and KY-31 were tested against invertebrates in field and greenhouse trials.
      • Neither grass is likely to appreciably reduce the food base for insectivorous birds.
      doi:10.2134/cftm2017.03.0023
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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
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  • APPLIED TURFGRASS SCIENCE—BRIEFS up

    • Luqi Li, Matthew Sousek, Roch Gaussoin and Zachary Reicher
      Herbicide Tolerance of Established Buffalograss
      Core Ideas
      • Proper calibration and application is important when using herbicides on buffalograss.
      • Established ‘Bowie’ buffalograss was most tolerant to carfentrazone + quinclorac, halosulfuron, indaziflam, quinclorac, quinclorac + MCCP + dicamba, simazine, sulfosulfuron, or thiencarbazone + iodosulfuron + dicamba.
      • Herbicide injury on established buffalograss is relatively short-lived with the exception of imazapic at the 2× rate.
      doi:10.2134/cftm2016.10.0065
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    • Micah Gould, Alec Kowalewski, Clint Mattox, Brian McDonald and Conner Olsen
      Effects of Winter Foot Traffic on Annual Bluegrass Putting-Green Quality in Western Oregon
      Core Ideas
      • The objective was to document effects of winter foot traffic on an annual bluegrass putting green.
      • Foot traffic applied at 440 rounds per day produced the greatest reduction in turf quality and color.
      • Traffic should be limited to 220 rounds per day to prevent unacceptable turf quality and color from developing during winter months.
      • Rounds per week can be increased in the final week of March, when annual bluegrass is able to recover from traffic.
      doi:10.2134/cftm2016.08.0054
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    • 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
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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
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  • CROP MANAGEMENT up

    • Lori J. Abendroth, Krishna P. Woli, Anthony J.W. Myers and Roger W. Elmore
      Yield-Based Corn Planting Date Recommendation Windows for Iowa
      Core Ideas
      • Three distinct site-groupings resulted, with different recommended planting windows.
      • Two planting windows were developed for each site-grouping: 98–100% grain yield or 95–100% grain yield.
      • The north-central and northeast grouping had the earliest recommended planting window to maximize grain yield.
      doi:10.2134/cftm2017.02.0015
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    • 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
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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
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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
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    • Aaron P. Brooker, Laura E. Lindsey, Steven W. Culman, Sakthi K. Subburayalu and Peter R. Thomison
      Low Soil Phosphorus and Potassium Limit Soybean Grain Yield in Ohio
      Core Ideas
      • Twenty-one percent of the soil samples were within the build-up range for P.
      • Twenty-three percent of the soil samples were within the build-up range for K.
      • Soybean yield decreased when soil test P and K were within the build-up range.
      doi:10.2134/cftm2016.12.0081
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    • David L. Jordan, Tommy Corbett, Clyde Bogle, Barbara Shew, Rick Brandenburg and Weimin Ye
      Effect of Previous Rotation on Plant Parasitic Nematode Population in Peanut and Crop Yield
      Core Ideas
      • A diverse crop rotation reduces soil parasitic nematode population.
      • Impact of previous rotation can persist for multiple years.
      • Wheat yield was greater after continuous peanut than yield of rotations including corn and cotton.
      doi:10.2134/cftm2016.12.0086
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    • Maxwel C. Oliveira, Dave Feist, Steve Eskelsen, Jon E. Scott and Stevan Z. Knezevic
      Weed Control in Soybean with Preemergence- and Postemergence-applied Herbicides
      Core Ideas
      • Herbicide premixes provided good (>90%) broadleaf and grass weed control in Nebraska.
      • Preemergence-applied herbicide premixes with different sites of action will help manage resistance weeds.
      • Preemergence-applied herbicides should be a foundation for weed management in soybean.
      doi:10.2134/cftm2016.05.0040
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    • Shelby R. Rajkovich, Deanna L. Osmond, Randy Weisz and Carl Crozier
      Evaluation of Environmentally Smart Nitrogen in Winter Wheat in North Carolina
      Core Ideas
      • Environmentally Smart Nitrogen (ESN) and ESN mixtures with ammonium sulfate did not increase grain yield over urea–ammonium nitrate.
      • Effects of ESN timing varied due to year and physiographic region.
      • Environmentally Smart Nitrogen does not appear to provide agronomic benefit to wheat in North Carolina.
      doi:10.2134/cftm2016.0017
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    • Matthew C. Vann, Loren R. Fisher, Randy Wells, David L. Jordan and Joshua L. Heitman
      Alternative Ridging Practices for Flue-Cured Tobacco Production in North Carolina
      Core Ideas
      • Alternative ridging methods could prove beneficial for tobacco producers.
      • Conservation tillage efforts have demonstrated little success.
      • Fine-textured soils will require special management considerations.
      • Soil resistance is considered to be a limiting production factor.
      • Coarse-textured soils appear to be better suited than fine-textured soils.
      doi:10.2134/cftm2017.02.0016
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    • Justin W. Moss, R. Scott Tubbs, Timothy L. Grey, Nathan B. Smith and Jerry W. Johnson
      Assessment of Double-Crop and Relay-Intercropping Systems of Peanut with Soft Red Winter Wheat and Residual Herbicides
      Core Ideas
      • The southern United States has long warm seasons where relay-intercropping could have benefits.
      • Wheat followed by peanut can be a successful cropping system if managed correctly.
      • Herbicide strategies are important when considering relay-intercropping systems.
      • Double-cropping peanut after wheat was more successful than relay-intercropping.
      • Neither imazapic nor pyroxasulfone caused injury to peanut or Clearfield wheat.
      doi:10.2134/cftm2016.10.0069
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    • Rosemary Bulyaba and Andrew W. Lenssen
      Influence of Bradyrhizobium Inoculation and Fungicide Seed Treatment on Development and Yield of Cowpea, Lablab, and Soybean
      Core Ideas
      • Cowpea did not require Bradyrhizobium inoculation for nodulation.
      • Lablab required Bradyrhizobium inoculation for nodulation.
      • Fungicide seed treatment did not compromise nodulation of cowpea or lablab.
      doi:10.2134/cftm2017.01.0007
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    • C.J. Bryant, L.J. Krutz, L. Falconer, J.T. Irby, C.G. Henry, H.C. Pringle III, M.E. Henry, D.P. Roach, D.M. Pickelmann, R.L. Atwill and C.W. Wood
      Irrigation Water Management Practices that Reduce Water Requirements for Mid-South Furrow-Irrigated Soybean
      Core Ideas
      • Irrigation water management practices reduced total water use 21%.
      • Irrigation water management practices increased irrigation water use efficiency 36%.
      • Sensor-based scheduling reduced irrigation by 50%.
      doi:10.2134/cftm2017.04.0025
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    • Anserd Foster, Sam Atwell and David Dunn
      Sensor-based Nitrogen Fertilization for Midseason Rice Production in Southeast Missouri
      Core Ideas
      • Sensor-based N management used with a nitrogen-rich strip was a very effective decision support tool for midseason N management.
      • Sensor-based N management provided opportunity to take advantage of year-to-year environmental variation.
      • Sensor-based N management approach reduced the amount of total N applied without any yield penalty compared with the traditional practice.
      doi:10.2134/cftm2017.01.0005
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    • C.W. Wood, L.J. Krutz, L. Falconer, H.C. Pringle III, B. Henry, T. Irby, J.M. Orlowski, C. J. Bryant, D.L. Boykin, R.L. Atwill and D.M. Pickelmann
      Surge Irrigation Reduces Irrigation Requirements for Soybean on Smectitic Clay-Textured Soils
      Core Ideas
      • Surge irrigation reduced the amount of water applied per irrigation event by 22%
      • Surge irrigation reduced the total amount of seasonal irrigation water application by 24%
      • Surge irrigation increased irrigation water use efficiency by 29%
      doi:10.2134/cftm2017.04.0026
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    • Matthew D. Inman, David L. Jordan, Alan C. York, Katie M. Jennings and David W. Monks
      Long-term Management of Palmer Amaranth with Herbicides and Cultural Practices in Cotton
      Core Ideas
      • Deep tillage reduced Palmer amaranth populations
      • Hand-removal of Palmer amaranth over 4 yr reduced the soil seedbank and maintained a low frequency of glyphosate resistance
      • Hand-removal of Palmer amaranth was more effective than deep tillage in preventing an increase in glyphosate resistance
      doi:10.2134/cftm2017.03.0017
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    • Ian A. Knight, Phillip M. Roberts, Wayne A. Gardner, Kerry M. Oliver, Alana Jacobson and Michael D. Toews
      Effect of Beauveria bassiana (Hypocreales: Clavicipitaceae) and Fungicide Applications on Megacopta cribraria (Hemiptera: Plataspidae) in Soybean
      doi:10.2134/cftm2017.05.0034
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    • A. Chatterjee, S. Lovas, H. Rasmussena and R.J. Goos
      Foliar Application of Iron Fertilizers to Control Iron Deficiency Chlorosis of Soybean
      Core Ideas
      • Iron deficiency chlorosis reduces soybean yield in the Northern Great Plains.
      • Fe-ortho-ortho-EDDHA performed better than other iron forms.
      • Foliar application after iron deficiency chlorosis appearance did not increase yield.
      doi:10.2134/cftm2017.05.0037
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    • M. Joy M. Abit, Lance M. Shepherd, David A. Marburger and D. Brian Arnall
      On-Farm Winter Wheat Response to Nitrogen-, Phosphorus-, Potassium-, and Sulfur-Rich Strips in Oklahoma
      Core Ideas
      • Thirty-two percent of the locations had an increase in grain yield with increased nutrient inputs.
      • Wheat response to additional N was potentially due to underestimated yield potential or N losses attributable to ammonia losses, immobilization, leaching, or environmental conditions.
      • Response of wheat to additional P was likely a result of underapplication of P fertilizer, especially on low-pH soils
      • Winter wheat grain yield response to K fertilization in the high soil test K environment was potentially due to enhanced vegetative growth of wheat during drought conditions.
      • Soil test SO4–S levels were adequate to produce grain yields above estimated yield goals.
      doi:10.2134/cftm2017.02.0014
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    • Oliver W. Carter III, Eric P. Prostko and Jerry W. Davis
      Commercial Safened ALS-herbicide Formulation Effects on ALS-sensitive Field Corn Hybrids
      Core Ideas
      • Corn hybrid sensitivity to ALS herbicides is an issue.
      • Herbicide safeners may not provide complete crop safety.
      • Growers who want to use safened ALS herbicides on sensitive corn hybrids must be aware of yield loss potential.
      doi:10.2134/cftm2017.03.0019
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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
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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
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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
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  • CROP MANAGEMENT—BRIEFS up

    • Amitava Chatterjee and Norman Cattanach
      Can We Increase Sugar Beet Yield with Lime, Cultivar Selection, and Fertilizer Applications?
      Core Ideas
      • Lime and cultivar had no effect on sugar beet production.
      • Liquid starter can reduce the seed germination.
      • Recommended fertilizer application is enough for fields with history of sand syndrome.
      doi:10.2134/cftm2016.12.0089
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    • Peter R. Thomison, Alexander J. Lindsey, Allen B. Geyer, Emerson D. Nafziger, Jeffrey A. Coulter and Mark E. Zarnstorff
      Tassel Deformation in Corn Following Early-Season Defoliation
      Core Ideas
      • Severe early-season defoliation, such as hail injury, may cause abnormal growth and development of corn tassels.
      • If defoliation induced tassel deformation occurs within a large field, poor pollen production could greatly reduce yield.
      • Certain genetic backgrounds may be more likely to express tassel deformation in response to early-season defoliation.
      doi:10.2134/cftm2017.01.0004
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    • Barbara S. Gilmore, Ruth C. Martin, James E. Dombrowski, Stephen C. Alderman, Robert R. Martin, Nola J. Mosier, Clare S. Sullivan, Nicole P. Anderson, George D. Hoffman and Paul L. Guy
      Virus Incidence in Orchardgrass ( Dactylis glomerata L.) Seed Production Fields in the Willamette Valley
      Core Ideas
      • Cocksfoot mottle virus (CfMV) is increasing in severity in the Willamette Valley of Oregon.
      • Cereal yellow dwarf virus (CYDV) is the most prevalent yellow dwarf virus in orchardgrass in Oregon.
      • CfMV and CYDV could be contributing to reduced stand longevity in orchardgrass seed production fields in Oregon.
      doi:10.2134/cftm2016.12.0087
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    • John M. Orlowski, William R. Serson, Maythem AL-Amery, Gary L. Gregg and Chad D. Lee
      Early-season Stress Can Have Small Effect on Soybean Seed Protein and Oil Content
      Core Ideas
      • Early-season stress can increase or decrease seed protein.
      • Early-season stress can increase or decrease seed oil.
      • Changes in protein and oil were inconsistent across years and sites.
      doi:10.2134/cftm2016.12.0082
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  • CROP MANAGEMENT up

    • Daniel Barker and John Sawyer
      Evaluation of Nitrogen Fertilizer Additives for Enhanced Efficiency in Corn on Iowa Soils
      Core Ideas
      • Landscape position was selected and N fertilizer treatments were designed to promote significant denitrification and enhanced potential volatilization.
      • No agronomic benefit was found using urea with nitrification and urease inhibitors or urea with a polymer coating.
      • Lack of response to inhibitor products and coated urea were likely due to rainfall timing and amount shortly after application, reduced volatilization due to high soil retention of NH4, and slowed nitrification rates from cool soil temperatures after application.
      doi:10.2134/cftm2017.02.0010
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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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    • Brent L. Brock, Lynnette Evans and Clenton E. Owensby
      Spatial and Temporal Grazing Patterns on Intensive-early Stocked and Season-long Stocked Pastures
      Core Ideas
      • Temporal grazing patterns influence forage quality.
      • Temporal and spatial grazing patterns aid in grazing system design.
      • Uniformity of grazing distribution is enhanced by increased stocking density.
      doi:10.2134/cftm2016.0016
      Crop, Forage and Turfgrass Management 2017 3:
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    • Kimberly McCuistion, Jamie L. Foster, Greta Schuster, David Wester, Zachary Lopez, Alinna M. Umphres and Adrian Coronado
      Forage Mass, Nutritive Value, and In situ Degradation of Sorghum Silage Treated with Fibrolytic Enzymes
      Core Ideas
      • Xylanase and cellulase treatment of sorghum silage did not affect sorghum silage nutritive value.
      • The brown midrib trait and harvest timing have more influence on silage quality than fibrolytic enzymes.
      doi:10.2134/cftm2016.12.0077
      Crop, Forage and Turfgrass Management 2017 3:
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    • Lisa Baxter, Chuck West, Philip Browna and Paul Green
      Nondestructive Determination of Legume Content in Grass-Legume Pastures
      Core Ideas
      • Procedures were more successful when forage species were distinct hues of green.
      • Overall, predictive accuracy of PowerPoint model was best in Old World bluestem–legume pasture.
      • Only the visual model showed potential in tall wheatgrass–alfalfa pasture.
      doi:10.2134/cftm2016.12.0088
      Crop, Forage and Turfgrass Management 2017 3:
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    • Sandya R. Kesoju and Stephanie L. Greene
      Practices that Support Coexistence: A Survey of Alfalfa Growers
      Core Ideas
      • Genetically engineered alfalfa adoption is higher in areas where alfalfa is not exported.
      • Most respondents practice coexistence strategies, but only 4% test hay seed prior to planting.
      • No respondents in Washington reported testing seed, despite reporting the highest level of export.
      • Growers underestimate the risk of seed spillage during planting and seed harvest and transport.
      • Hay and seed growers need education about transgene dispersal risk and coexistence practices.
      doi:10.2134/cftm2016.12.0080
      Crop, Forage and Turfgrass Management 2017 3:
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    • Joseph G. Robins, Ray F. Smith, Marvin H. Hall, Chris D. Teutsch and Daniel J. Undersander
      Associations among U.S. Locations for Orchardgrass Production
      Core Ideas
      • Orchardgrass exhibits strong genotype × environment interaction across U.S. production area.
      • There is limited association between US orchardgrass production areas.
      • The choice of best orchardgrass cultivar should be based on local production conditions.
      doi:10.2134/cftm2017.02.0012
      Crop, Forage and Turfgrass Management 2017 3:
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    • Christine H. Gelley, Renata L. G. Nave and Gary E. Bates
      Influence of Height-Based Management on Forage Nutritive Value of Four Warm-Season Forage Grasses
      Core Ideas
      • Change in nutritive value was analyzed based on height for warm-season grasses.
      • Herbage mass was estimated for each species at designated height.
      • Predictive models based on herbage mass may be helpful for producers.
      doi:10.2134/cftm2016.10.0067
      Crop, Forage and Turfgrass Management 2017 3:
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    • J.K. Yarborough, J.M.B. Vendramini, M.L.A. Silveira, L.E. Sollenberger, R.G. Leon, J.M.D. Sanchez, F. Leite de Oliveira, F. Kuhawara, U. Cecato and C.V. Soares Filho
      Potassium and Nitrogen Fertilization Effects on Jiggs Bermudagrass Herbage Accumulation, Root–Rhizome Mass, and Tissue Nutrient Concentration
      Core Ideas
      • Bermudagrass K fertilization affects forage characteristics.
      • Bermudagrass K fertilization effects are influenced by N fertilization.
      • K fertilization is crucial to increase belowground reserves of bermudagrass.
      doi:10.2134/cftm2017.04.0029
      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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  • FORAGE ﹠ GRAZINGLANDS up

    • Daniel W. Sweeney and Joseph L. Moyer
      Nitrogen Management for Seed Production from Endophyte-Free Tall Fescue Grown on Claypan Soil
      Core Ideas
      • Pastures may be replanted with endophyte-free seed to avoid harmful alkaloids.
      • Better N management may be required for endophyte-free fescue seed production.
      • Nitrogen fertilizer placement has little effect on endophyte-free seed production.
      • Fescue seed yield may be maximized with 150 lb N/acre applied in late winter.
      doi:10.2134/cftm2017.04.0027
      Crop, Forage and Turfgrass Management 2017 3:
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  • FORAGE & GRAZINGLANDS—BRIEFS up

    • Edward B. Rayburn, William L. Shockey, David A. Seymour, Brad D. Smith and Thomas J. Basden
      Calibration of Pasture Forage Mass to Plate Meter Compressed Height Is a Second-Order Response with a Zero Intercept
      Core Ideas
      • Forage density has a linear relation to pasture height.
      • The regression of forage density to pasture height is a measure of plant morphology within the sward.
      • Forage mass is the product of forage density and pasture height resulting in a second-order relation with zero intercept.
      • The form of the second-order relation of forage mass to pasture height can be diminishing return, linear, or exponential, depending on the distribution of forage density within the pasture.
      doi:10.2134/cftm2017.01.0003
      Crop, Forage and Turfgrass Management 2017 3:
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    • Cristian J. Moscoso and Natalie L. Urrutia
      Overview of the Forage Land-Use in Southern Chile in a Thirty-Year Period
      Core Ideas
      • Land-use for forage decreased in the three regions, but not at the country level.
      • Naturalized land without cultural treatment represents the 88% of all forage land.
      • Cultivated forages represented less than 3.6% of all forage use at the country level.
      • Total forage area in the main grazing regions are being reduced over time.
      doi:10.2134/cftm2017.04.0032
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    • James K. Rogers
      The Effect of Vitazyme, a Liquid Bio-Stimulant, in Combination with Nitrogen on Yield and Nutritive Value of Bermudagrass in Southern Oklahoma
      Core Ideas
      • Vitazyme did not increase bermudagrass yield at the manufacture’s recommended application rate.
      • Vitazyme did not improve nutritive value of bermudagrass when applied at the manufacturer’s recommended rate.
      • Bermudagrass response to nitrogen rate was linear but was not influenced by Vitazyme application.
      doi:10.2134/cftm2017.03.0020
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