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Hort Irrigation 1
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Hort Irrigation 1






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    Hort Irrigation 1 Hort Irrigation 1 Presentation Transcript

    • Irrigation Term: Turgidity Plant: Nandina
    • Japanese Barberry
      • Shrub, deciduous
      • Hardiness Zones: 4a to 8a
      • Height: 3’ to 6’ by Spread : 4’ to 6’
      • Exposure: shade to full sun
      • Leaf Color: Green, Purple – Grown for Foliage not blooms
      • Has small red berries in fall
      • Grows very slowly
      • Looks like a red boxwood
      • Has small thorns
    • Turgidity
      • ' Turgor pressure' or turgidity is the main pressure of the cell contents against the cell wall in plant cells and bacteria cells, determined by the water content of the vacuole
    • Turgidity
      • Very important for plant strength & metabolism
      • A plant with low turgidity is “wilted”
      • Plants can recover if no vessel damage takes place
      • Metabolism and growth suffer if turgidity is lost
      • Supplemental water (irrigation) is required for any commercial production in VA.
    • Types of Irrigation
      • Surface
      • Localized
        • Drip
        • Sprinklers
      • Sub-irrigation
    • Surface Irrigation – Large Scale
      • Use gullies & aquaducts
      • Use flooding
    • Subirrigation
      • Irrigation water is applied to the roots only through underground pipes
        • Areas with high water table
        • Greenhouses
      • Area is soaked for an interval and then water is removed by pumps & stored for next watering
    • Localized
      • Drip
      • Soakers
      • Sprinklers
      • Misters
    • Greenhouse Application
      • Ebb and flow
      • Prevents leaves from getting wet
      • Incomplete drainage may cause oxygen problems for root systems
    • Capillary Mats
      • Similar to ebb & flow
      • Water is held in a saturated mat
      • Algae problems
      • http:// www.ebbandflowmat.com /
    • Spaghetti tubing
      • Works great for medium and large containers
      • Doesn’t work well for small pots or cell packs
      • Can be used in greenhouses or outside nurseries.
    • Spray/mist
      • Same delivery system
      • Change the head for different purposes
      • Mist for propagation
      • Sprinkler for growing
      • Also used for cooling and freeze protection
    • Typical Drip Irrigation System
    • Today
      • Read chapter 26. Pages 663 to 675
      • Answer in your notebook:
        • What plant processes require water?
        • Why would water in the soil be unavailable? How can you measure it?
        • When is the best time of day to water?
        • How can you tell when turfgrass needs water?
        • How many inches of water per week do grass & most plants need?
        • What is a pop-up sprinkler. Where is it used?
        • How deep should the water penetrate in good watering?