1 / 41

Identifying Turfgrasses

Identifying Turfgrasses. Agents Commercial Ornamental Horticulture In-service Training - May, 2005. Warm-season Bermudagrass Zoysia Centipedegrass St. Augustinegrass. Cool-season Tall fescue Fine fescues Kentucky bluegrass Perennial ryegrass Annual ryegrass.

dyami
Download Presentation

Identifying Turfgrasses

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Identifying Turfgrasses Agents Commercial Ornamental Horticulture In-service Training - May, 2005

  2. Warm-season Bermudagrass Zoysia Centipedegrass St. Augustinegrass Cool-season Tall fescue Fine fescues Kentucky bluegrass Perennial ryegrass Annual ryegrass Common Turfgrasses in Tennessee

  3. Rhizomes Turfgrass Growth Habit Tillers Stolons

  4. Growth Habit • Bunch: spread by tillering • Uniformity is problem long term or at low seeding rates • Tall, Chewings and Hard Fescues, and Annual and Perennial Ryegrasses

  5. Growth Habit • Rhizomatous • Below-ground lateral shoots • Storage organs • Uniform turfs • Sod production • Bermudagrass, Kentucky Bluegrass, Creeping Red Fescue and Zoysia

  6. Growth Habit • Stoloniferous • Above-ground lateral shoots • Foraging organ; grow faster than rhizomes • Uniform turfs • Close mowing preferred • Sod production • Bermudagrass and Zoysia

  7. A Turfgrass Plant

  8. Vernation Folded Rolled

  9. Leaf Tip Pointed Rounded Boat-shaped

  10. Ligule

  11. Collar

  12. Auricles

  13. Tall Fescue • Growth habit: bunch • Vernation: rolled • Ligule: med.(0.4 - 1.2 mm), blunt • Auricles: short, blunt, hairs • Collar: broad, divided, short hairs • Blade: wide (5-10 mm), flat, stiff (coarse leaf)

  14. Vernation: folded • Ligule: membranous, 0.5 mm, blunt • Auricles: none • Collar: narrow, continuous • Blade: 11/2 - 3 mm, often remaining folded Red fescue

  15. Hard fescue(Festuca longifolia) • Growth habit: bunch • Very stiff leaves, wider than sheep fescue • More tolerant of moist, fertile soils than sheep fescue • Uses: shade mixtures and soil stabilization

  16. Poa spp. • Most commonly used temperate grass • More than 200 species • Vernation: folded • Auricles: none • Leaf blade: boat-shaped tip; distinct central vein + parallel light veins • Growth habit: bunch, stoloniferous or rhizomatous depending on species • Cutting height: 1 to 4 inches

  17. Kentucky bluegrass • Ligule: membranous, very short (0.2 - 0.6 mm), blunt • Collar: broad, divided • Leaf blades: smooth, central vein, boat-shaped tip

  18. Annual bluegrass (Poa annua) • Damp/moist, fertile soils • Sun to shade • Major component of many golf greens (unintentionally) and lawns – often form conspicuous patches

  19. Ligule: long (0.8 – 3mm), membranous, pointed • Collar: broad, divided • Blade: two - 3 mm wide; light- to dark-green ecotypes Annual bluegrass

  20. Seed producer (1,190,000 seeds / lb.) Wrinkled leaves Long ligule Annual bluegrass

  21. Rough bluegrass(Poa trivialis) • Growth habit: stoloniferous • Fine-textured, light green • Damp/moist, fertile soils • Poor heat/drought tolerance • Moderate to heavy shade • turns brown & thins out in sun during summer • *Overseeding bermudagrass

  22. Ligule: long (2 - 6 mm) membranous, pointed or notched • Collar: broad, divided • Blades: one - 4 mm wide; glossy surface; sheath has “onion-skin” look Rough bluegrass

  23. Rough bluegrass Weak, small and short stolon Rough bluegrass

  24. Perennial ryegrass(Lolium perenne) • English ryegrass • Growth habit: bunch • Origin: British Isles • Annual or perennial according to location

  25. Vernation: folded • Ligule: 0.5-2 mm, membranous, blunt to rounded • Auricles: small, claw-like • Collar: broad, divided • Blades: flat, 2-5 mm wide; glossy underside Perennial ryegrass

  26. Other ID tips Very red at the base Seeds are wider above the mid-point Perennial ryegrass Perennial ryegrass

  27. Italian ryegrass • Annual or short-lived perennial • Growth habit: bunch • Vernation: rolled • Ligule: ½ - 2 mm, membranous, rounded • Auricles: pointed, claw-like • Collar: broad, continuous Annual ryegrass

  28. awns rolled folded Annual ryegrass Perennial ryegrass

  29. Bermudagrass(Cynodon spp.) • Most common southern turfgrass; highly variable • Several species and hybrids: • Common = Cynodon dactylon (18 chromosomes) • African = C. transvaalensis (36 chromosomes) • Hybrids: C. dactylon x C. transvaalensis; Sterile

  30. Bermudagrass • Vernation: folded • Ligule: fringe of hairs • Auricles: none • Collar: continuous, narrow to broad • Blades: flat, 1.5 - 4 mm wide, smooth or hairy above & below • Growth habit: stoloniferous, rhizomatous

  31. Bermudagrass

  32. Zoysia

  33. Zoysia (Zoysia spp.) • Three species used for turf: • Japanese lawngrass = Zoysiajaponica • Manilagrass = Zoysia matrella • Mascarenegrass = Zoysia tenuifolia

  34. Zoysia • Vernation: rolled • Auricles: none • Ligule: fringe of hairs • Collar: broad, continuous, w/ long hairs • Blades: flat, 2-4 mm wide, stiff, long hairs on top (bottom) • Growth habit: stoloniferous, rhizomatous

  35. Zoysia pointed, stiff, upright leaves

  36. Centipedegrass(Eremochloa ophiuroides) • Moderately coarse -textured • Stoloniferous • Adaptation and Uses • Coastal, southern transition zone • Lawns, rights-of-way • Use is increasing

  37. Centipedegrass

  38. St. Augustinegrass • Coarse-textured • Stoloniferous • Leaf blade constricted at the base

More Related