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Popcorn and Ornamental Corn. Key points Popcorn characteristics Growing popcorn Harvesting & shelling Popping Ornamental corn Problems. Popcorn ( Zea mays ). Introduction Was probably the __________ type of corn to be consumed Began in _____________ region of South America

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popcorn and ornamental corn
Popcorn and Ornamental Corn

Key points

  • Popcorn characteristics
  • Growing popcorn
  • Harvesting & shelling
  • Popping
  • Ornamental corn
  • Problems
popcorn zea mays
Popcorn (Zea mays)

Introduction

  • Was probably the __________ type of corn to be consumed
    • Began in _____________ region of South America
    • Also widely used by North American natives
  • Actually a type of flint corn
characteristics of popcorn
Characteristics of Popcorn
  • Generally has ________________ ears
    • May be 2 to 3 ears per stalk
    • Comes in a range of colors
      • Red, blue, _______________, purple, orange
      • Standard cultivars are yellow or white
  • Popcorn can be grown both for popping or as an _________________
popcorn kernels
Popcorn Kernels
  • Pointed at the __________

and apex

  • Very hard endosperm
  • Have _________ pericarps
  • _______________ content very important for good popping
    • When heated the water expands
    • Causes kernel to turn itself inside out
growing popcorn
Growing Popcorn
  • Plant in _____- _____ when soils have warmed
    • Popcorn has slow ___________ and seedling growth
growing popcorn1
Growing Popcorn
  • Pollination
    • Plant in _________________ to ensure good pollination
    • Not necessary to isolation from other types of corn
  • If popcorn sheds ______ at same time as sweet corn, sweet corn quality can be reduced
popcorn harvesting
Popcorn Harvesting
  • Ears must reach full maturity
  • Allow ears to remain on plants until they reach about _______% moisture (about first frost)
  • Harvest ___________ and remove husks
  • Store ears for about 3 weeks in a sheltered, dry place, outdoors
    • Well ventilated to avoid mold
    • Brings moisture content down to ~____%; ideal for popping
hand shelling popcorn
Hand-shelling popcorn
  • Remove kernels from the ear by a vigorous _______ motion against your hands
  • Store the kernels in ________ containers
  • Popping ______ critical – ______ of popped corn from given weight of _______ kernels
popping
Popping
  • __________ integrity is of utmost importance
    • It is like a pressure vessel
      • Heat _________ the moisture
      • Steam provides the driving force for _________ of the kernel
  • Popping occurs when the _______ ruptures
    • Rupture should not occur until ________ lbs per sq. inch of pressure is applied
popping1
Popping
  • Poor popping
    • Often occurs if moisture content is too low
      • Without proper storage, popcorn will dry to _______% moisture, which is too low for good popping
      • Can increase moisture by adding one tablespoon of water per ____________ of popcorn, shaking, and sealing in a container
    • If pericarp is broken, popping quality is greatly __________________
    • If popcorn is “chewy” after popping then too much _________
popcorn as a food
Popcorn as a food
  • Nutritionally _________ popcorn is one of best snack foods
  • Popcorn contains:
    • More _________ and protein than a similar weight of whole wheat bread
    • 67% as much _______, 110% as much iron, and as much ______ as equal amount of beef
  • Added oil and salt lowers nutritional value
ornamental corn
Ornamental Corn
  • New ornamental corns have________ in their parentage
    • Smaller ear size
  • Plant in mid-to-late May for mid- _______ harvest
  • Can find cultivars with _________ stalks, husks, and kernels
ornamental corn1
Ornamental Corn
  • Harvest ears when ________ is dry and ears beginning to dry down
  • Pick ears carefully so ________ not damaged
  • Pull husks back – so _____ and ears dry quickly
  • Tie ears together into bunches
problems of popcorn and ornamental corn
Problems of popcorn and ornamental corn
  • Stalk standabilty and ear ______ important
    • Insect problems _________ to sweet corn
    • Damage from corn earworm, European corn borer, & corn _________
    • Diseases – stalk rots & ear molds
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