11 17 Peaches   Drupes
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11 17 Peaches Drupes

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    11 17 Peaches   Drupes 11 17 Peaches Drupes Presentation Transcript

    • Introduction to Horticulture Plant: Peach Tree Term: Drupe
    • Peach tree Prunus perisca
      • Deciduous flowering Tree
      • USDA Hardiness Zones: 5b to 8a
      • Height & Spread: 15 to 25 ft
      • Exposure: full sun for optimum fruit growth
      • Fruit: Mid July to Mid August
      • Soil: moist neutral to acidic, Well drained
    • Drupe :
      • A stone fruit having a hard, nut-like inner part surrounded by a fleshy or fibrous outer layer (i.e. cherry, peach, olive, walnut);
    • Open form
      • Pruned to
    • Propagating Fruit
      • Apples
        • Cross pollinated
        • Seed will not grow true
        • Seeds can be used to grow root stock
        • Cuttings (genetically identical) used for scions
      • Peaches
        • Self pollinated
        • Seed usually grows true
        • Growing from seed takes longer
        • Most commercial growers used grafted plants
    • Growing Peaches
      • Peaches are very sensitive to disease, drought and cold
      • Peaches have a chilling requirement expressed in # of hours below 45 deg F
      • All non-citrus fruits & nuts have a winter dormancy period
      • There are two phases:
        • Endo-dormancy – winter cold – certain # hours rqd
        • Ecto-dormancy – spring warmth – spurs budding
    • Annual Cycle for Fruit
    • Grafting
      • Bottom is root stock
      • Top is scion
    • Virginia Varieties
      • Select variety based on chilling period – need >800 chilling hours for Virginia
      • Freestone or Cling stone
      • Peaches and nectarines are basically the same. Nectarines have been bred for fuzzless skin.
      • Do not require cross pollination
      • Irrigation is usually required in Va. during July and August
    • Virginia Peaches
      • Some fruit produced by third year
      • Full fruit production by 6 or 7 th year
      • Redhaven, Cresthaven, Encore, Harken, and Harcrest are best varieties for Virginia’s winters.
      • Trunks are frequently painted white in winter to decrease temperature changes.
    • Types of grafting
    • Creative grafting
    • Cleft Graft
    • Bark Graft