Soilless Growing Media By: Johnny M. Jessup Agriculture Teacher/FFA Advisor.
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Transcript of Soilless Growing Media By: Johnny M. Jessup Agriculture Teacher/FFA Advisor.
![Page 1: Soilless Growing Media By: Johnny M. Jessup Agriculture Teacher/FFA Advisor.](https://reader035.fdocuments.in/reader035/viewer/2022062421/56649dda5503460f94acff6b/html5/thumbnails/1.jpg)
Soilless Growing Media
By: Johnny M. JessupAgriculture Teacher/FFA
Advisor
![Page 2: Soilless Growing Media By: Johnny M. Jessup Agriculture Teacher/FFA Advisor.](https://reader035.fdocuments.in/reader035/viewer/2022062421/56649dda5503460f94acff6b/html5/thumbnails/2.jpg)
Soils & Growing Media
• Made up of two types of materials….• Organic Matter• Inorganic Compounds
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Organic Matter
• Dead plant or animal tissue.• Contains carbon.• Usually has diseases or insects.
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Types of Organic Matter
• Compost• Mixture of partially decayed organic
matter.
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Types of Organic Matter
• Bark• Particles too
large to use in seed germination media.
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Types of Organic Matter
• Mulch• Material placed on soil to break the
fall of raindrops (prevents erosion), prevent weeds from growing, or improve the appearance of the area.
• Used to cover soil to help hold moisture and prevent weeds.
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Mulch
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Types of Organic Matter
• Straw
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Types of Organic Matter
• Peat Moss• Type of organic matter made from
sphagnum moss.
![Page 10: Soilless Growing Media By: Johnny M. Jessup Agriculture Teacher/FFA Advisor.](https://reader035.fdocuments.in/reader035/viewer/2022062421/56649dda5503460f94acff6b/html5/thumbnails/10.jpg)
Types of Organic Matter
• Sphagnum• Pale & ashy mosses used to condition
soil.
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Types of Organic Matter
• Sawdust & Wood Shavings• High carbon to nitrogen ratio that
makes nitrogen unavailable for plant use.
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Inorganic Compounds
• Do not contain carbon• Usually sterile.
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Types of Inorganic Compounds
• Soilless Media• Artificial soil.
• Perlite• Natural volcanic material.• Helps aeration.• Improves water-holding capacity.
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Perlite
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Vermiculite
• Vermiculite• Mica mineral matter used to start
seeds and cuttings.• Helps hold moisture.• Has neutral pH.
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pH
• Most organic matter is acid.• Most artificial media is neutral.
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Hydroponics
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Hydroponics
• The process of growing plants without soil.
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Types of Systems
• Aggregate System• Using sand or gravel to support plant
roots.
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Types of Systems
• Water Culture• Also called solution culture or
nutriculture.• Plant roots grow in water containing
dissolved nutrients.
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Types of Systems
• Aeroponics• Plant roots hang in air and are misted
regularly with a nutrient solution.
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Types of Systems
• Continuous Flow System• Nutrient solution flows constantly over plant
roots.• Most commonly used for commercial
production.
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Advantage of Hydroponics
• No soil & problems associated with soil.
• Easy to control nutrient content of plants.
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Disadvantages of Hydroponics
• Plant support must be provided with strings, wires, or stakes.
• Water quality must be high.• Diseases spread through water.• More moisture or humidity in air to
cause favorable environment for disease organisms.
• More expensive.
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Hydroponic Lettuce
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Designed By:
• Johnny M. Jessup; FFA Advisor• Hobbton High School