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Xiaoya Cai, Laurie E. Trenholm, Jason Kruse and Jerry B. Sartain

St. augustinegrass [ Stenotaphrum secundatum (Walt.) Kuntze] is widely used as a warm-season turfgrass. This is one of the most popular turfgrass species used for home lawns throughout the southern United States. St. augustinegrass has better shade

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Baoxin Chang, Benjamin Wherley, Jacqueline Aitkenhead-Peterson, Nadezda Ojeda, Charles Fontanier and Philip Dwyer

[ Stenotaphrum secundatum (Walt.) Kuntze] lawns. Materials and Methods This study was conducted at the Urban Landscape Runoff Facility located at the Texas A&M University Soil and Crop Sciences Field Research Laboratory, College Station, TX. The first study

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Zhiyong Wang, Paul Raymer and Zhenbang Chen

Busey, P. 1986 Morphological identification of St. Augustinegrass cultivars Crop Sci. 26 28 32 Busey, P. 1995 Genetic diversity and vulnerability of St. Augustinegrass Crop Sci. 35 322 327 Busey, P. 2003 St. Augustinegrass, Stenotaphrum secundatum

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Tim R. Pannkuk, Richard H. White, Kurt Steinke, Jacqueline A. Aitkenhead-Peterson, David R. Chalmers and James C. Thomas

randomly assigned to the lysimeters within each block and included: St. Augustinegrass [ Stenotaphrum secundatum (Walt.) Kuntze.] 100% cover, Shumard red oak ( Quercus shumardii Buckl.) tree alone with bare soil, native grasses little bluestem

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Jennifer A. Kimball, M. Carolina Zuleta, Matthew C. Martin, Kevin E. Kenworthy, Ambika Chandra and Susana R. Milla-Lewis

St. augustinegrass [ Stenotaphrum secundatum (Walt.) Kuntze] is a coarse-textured, warm-season, perennial turfgrass species well adapted for home lawns and commercial landscapes across the southern United States and upward into the southern regions

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Sarah E. Cathey, Jason K. Kruse, Thomas R. Sinclair and Michael D. Dukes

turfgrass cultivars. In this repeated study, ‘Argentine’ bahiagrass ( Paspalum notatum Flugge), ‘Floratam’ st. augustinegrass [ Stenotaphrum secundatum (Walt.) Kuntze], and ‘Empire’ zoysiagrass ( Zoysia japonica Steud.) were examined for drought stress

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Manuel Chavarria, Benjamin Wherley, James Thomas, Ambika Chandra and Paul Raymer

® ) st. augustinegrass [ Stenotaphrum secundatum (Walt.) Kuntze]; and ‘Sea Isle 1’ and ‘UGA 31’ (SeaStar ® ) seashore paspalum ( Paspalum vaginatum Swartz). Before study initiation, circular sod plugs (5-cm diameter × 5-cm depth) of each entry were

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Tim R. Pannkuk

Landscape water conservation methods and techniques contribute to managing water resources. Use of reference evapotranspiration (ETo) data and landscape coefficients is one method that needs further development. Local ETo data and actual plant water use were used to calculate plant factors (PFs) for three model landscapes composed of mixtures of turfgrass and shrubs. Model landscapes using a sandy loam soil included st. augustinegrass (Stenotaphrum secundatum), privet (Ligustrum japonicum), dwarf burford holly (Ilex cornuta ‘Burfordii Nana’), and dwarf yaupon holly (Ilex vomitoria ‘Nana’) at three ratios of turfgrass to shrub vegetative cover: 80:20, 50:50, and 20:80. Soil was placed into inground lysimeters in a complete randomized block design with soil moisture sensors and a drainage system. Lysimeters were irrigated with a sprinkler system, and water was applied at a rate of 100% replacement of ETo minus precipitation. Lysimeter soil leachate was collected from the drainage system and quantified. After 2 years, the PF of 20:80 and 50:50 turfgrass/shrub combination were greater than the PF of the 80:20 combination. Plant factors for the 80:20, 50:50, and 20:80 turfgrass:shrub combinations were 0.68, 0.97, and 1.01, respectively. There were no seasonal differences in PFs. Total growing season leachate depth over 2 years was 63.4, 30.7, and 12.6 mm for 80:20, 50:50, and 20:80, respectively. Further work on PFs should include other plant combinations, and evaluation in other climatic zones.

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Subhrajit K. Saha, Laurie E. Trenholm and J. Bryan Unruh

As a result of the coexistence of turfgrass and ornamentals in traditional landscapes, it is often impractical to separate fertilization and irrigation management among species. Furthermore, limited information is available on effects of turfgrass fertilizer on ornamental plants and vice versa. This research studied effects of two quick-release fertilizers (QRF) and one slow-release fertilizer (SRF) on quality and growth of turfgrass and ornamental plants and nutrient leaching. ‘Floratam’ St. Augustinegrass (Stenotaphrum secundatum Walt. Kuntze) was compared with a mix of common Florida ornamentals, including canna (Canna generalis L.H. Bailey), nandina (Nandina domestica Thunb.), ligustrum (Ligustrum japonicum Thunb.), and allamanda (Allamanda cathartica L.). All plants were grown in 300-L plastic pots in Arredondo fine sand. Less nitrate (NO3 ) was leached from turfgrass than from ornamentals and more NO3 leached from QRF 16N–1.7P–6.6K than from SRF 8N–1.7P–9.9K. Quick-release fertilizers produced higher plant quality. This controlled environment research provides preliminary data on which in situ research may be modeled. Further research is required to verify how nutrient release rate affects turfgrass and ornamental quality and nitrate leaching in an urban landscape.

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Ben Wherley, Ambika Chandra, Anthony Genovesi, Mason Kearns, Tim Pepper and Jim Thomas

, thinner and narrower leaves, greater leaf extension rates, and reduced root mass ( Dudeck and Peacock, 1992 ). St. augustinegrass [ Stenotaphrum secundatum (Walt.) Kuntze] is considered one of the most shade-tolerant warm-season turfgrass species ( Beard