5 25 peaches - drupes
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5 25 peaches - drupes

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5 25 peaches - drupes 5 25 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.