hydroponics
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Hydroponics. Textbook pages 124-127. Essential Questions:. What is hydroponics? What are the advantages and disadvantages associated with hydroponics? What requirements must hydroponic systems meet in order for plants to grow? - PowerPoint PPT PresentationTRANSCRIPT
HydroponicsTextbook pages 124-127
Essential Questions:What is hydroponics?What are the advantages and
disadvantages associated with hydroponics?What requirements must hydroponic
systems meet in order for plants to grow?What are some of the common types of
hydroponic systems and how do they operate?
What is hydroponics?The term hydroponics is a
combination of two Greek words:
Hydro = waterponics = labor
Hydroponics is growing plants with their roots in a medium other than soil
Hydroponics was documented over 300 years ago!!!
ADVANTAGES: no insects, no weeds, optimal nutrients
ADVANTAGES: Because hydroponics does not
use soil, harmful insects that live in soils cannot damage hydroponic crops.
Soils contain dormant weed seeds that may compete with crops for water, nutrients and light.
Hydroponic systems allow for every plant’s optimal nutrient needs to be addressed.
What are the advantages and disadvantages associated with
hydroponics?
ADVANTAGES: can adjust amount of nutrients & pH, and grow in many growing conditions
ADVANTAGES continued: The amount of nutrients can be
adjusted as the plants grow.
Hydroponic systems allow the pH levels available to plants to be adjusted quickly to help in nutrient uptake.
Hydroponic allows for high quality yields in parts of the world where there is nonproductive land or poor growing conditions.
What are the advantages and disadvantages associated with
hydroponics?
What are the advantages and disadvantages associated with
hydroponics?
DISADVANTAGES:The initial investment in a
commercial hydroponic system is high
Some diseases can spread rapidly throughout the system
Flower pollination can be difficult in greenhouses
DISADVANTAGES: expensive, diseases, difficulties in pollination
What requirements must hydroponic systems meet in order for plants to grow?
Hydroponically grown plants have the same basic requirements as plants grown in soil.
What are the requirements for plants to grow in soil? Temperature Light Water Oxygen Nutrients Support
The major differences in a hydroponic system are the way in which plants receive support and the method in which nutrients are made available.
What requirements must hydroponic systems meet in order for plants to grow?
Nutrients – since hydroponic systems do not use soil, essential nutrients must be provided in a water solution
Support – in hydroponic systems, artificial support can be provided. This can be accomplished through string stakes, trellises, and mesh materials
Bell Ringer: 3/16/11How are macronutrients
and micronutrients different?
What are the three primary nutrients?
If a plant’s leaves are beginning to yellow, what is the most likely nutrient deficiency?
What type of fertilizer should you use for houseplants?
Macronutrients are nutrients that are needed in larger amounts than micronutrients.
Nitrogen, Phosophorous, Potassium
Nitrogen
A fertilizer high in nitrogen is used for
houseplants.
What are some of the common types of hydroponic systems and how do they
operate?
There are two common hydroponic systems:
Aggregate culture – involves the use of materials that help support plants and allow them to take root
Water culture (nutriculture) – Most of the roots grow in a nutrient solution
What are some of the common types of hydroponic systems and how do they
operate?Aggregate culture
Common materials include sand, perlite, vermiculite, gravel, peat moss, and rockwool
These materials do not provide nutrients to the plant
SAND PERLITE VERMICULITE
GRAVEL PEAT MOSS ROCKWOOL
What are some of the common types of hydroponic systems and how do they
operate?
Water Culture (nutriculture)Some plants are started in rockwool, most of the
roots grow in a nutrient solutionThere is a continuous flow or mist of nutrient
solution that is recycledCirculating systems
REVIEWDon’t forget to write your CER Summary!!!
Support your Claim with Evidence and ReasoningUse specific examples from your notes
Exit Slip Questions:What is the Greek translation of hydroponics?
Name 2 advantages of hydroponics.
Name 2 disadvantages of hydroponics.
What is the difference between an aggregate culture and a water culture (or nutriculture)?