The Nitrogen Cycle

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The Nitrogen Cycle

• And its affects on Short Season Sweet Corn Growth
  And Development
• BY Heather Sloss, Rebecca Hipp, Bob Cowan

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Purpose

• The purpose of this project is to study the
  affects that different amounts of nitrogen in the
  soil has on short season sweet corn growth and
  development as well as to demonstrate the Law of
  Diminishing Returns.

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The Nitrogen Cycle

• The sequence of chemical and biological
  changes undergone by nitrogen as it moves from
  the atmosphere into water soil, and living
  organisms, and upon death of these organisms
  (plants and animals) is recycled through a part
  or all of the entire process.

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Short Season Sweet Corn
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History of Nitrogen Supplementation

• Fish Squanto
• Manure Phosphates
• Ammonium Haber

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Squanto
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Fish
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• (Not actual Indian tool used.)

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MMM MMM GOOD!
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Smarty Pants Pilgrim
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OOHHH! NOOOO!
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I hope this is all you European people want!?
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They finally got it right!!!
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YEEE HAAWWW!!!
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Manure
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Pay the to Transport Manure
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The Manure Discus
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Manure Recycling Makes For Good Soil
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Problems

• Phosphorus Deficiency
• Over Watering
• Weeds
• Temperature
• Depth of Seeds
• Size of the Pots

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Phosphorus Deficiency

• Plants laying over
• Leaves and stems turned purple
• Stunted growth

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Over Watering

• Leaching of nutrients
• Seeds rotting

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Weeds

• Competition with plants

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Temperature

• Inadequate absorption of nutrients (active uptake
  diffusion)

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Other Uses For Nitrogen
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Sources

• 1. Brady, Nyle C. and Weil, Ray R. The Nature and
  Properties of Soils. 13th ed. Prentice Hall,
  1990.
• 2. Gardner, Pierce, and Mitchell. Physiology of
  Crop Plants.
• 3. The Nitrogen Cycle.htm. August 5, 2003.
• 4. http//www.econutrients.com/images/Eco_Nutrient
  s_Fish_Manual.pdf Unknown author and date of
  publication. Page last viewed 04-23-04.(2) Maureen
  Gilmer.
• 5. http//www.gardenforum.com/Green_Manures.html
  Unknown author and date of publication. Page
  last viewed 04-23-04.(3)
• 6. http//www.nobel.se/chemistry/laureates/1918/ha
  ber-bio.html The official website of the Nobel
  Foundation. Unknown author and date of
  publication. Page last viewed 04-23-04.