Soiless Farming Alternatives to Soil Farming Hydroponics Hydroponics Hydroponics cultivating plants using mineral nutrient solutions dissolved in water Substrates used ID: 310635
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Alternative Methods:Soiless Farming
Alternatives to
Soil FarmingSlide2
Hydroponics
Slide3
Hydroponics
Hydroponics
: cultivating plants using mineral nutrient solutions dissolved in water.
Substrates used:Slide4
Hydroponics
Hydroponics
: cultivating plants using mineral nutrient solutions dissolved in water.
Substrates used:
Only water
Perlite
Gravel
Expanded clayMineral woolCoconut huskSlide5
Hydroponics
Where is it used:-
NASA: possibility of growing plants in large space stations or on other planets.Slide6
Hydroponics
Where is it used:-
NASA: possibility of growing plants in large space stations or on other planets.Greenhouses: most of the lettuce you eat is grown hydroponically. Slide7
Hydroponics
Where is it used:-
NASA: possibility of growing plants in large space stations or on other planets.Greenhouses: most of the lettuce you eat is grown hydroponically.
Laboratories: you can
control more variables
(amount of nutrients, pH)Slide8
Advantages of a Hydroponic System
No soil needed
Water can be reused many times before it needs to be flushed = saves waterSlide9
Advantages of a Hydroponic System
No soil needed
Water can be reused many times before it needs to be flushed = saves waterCan control plant nutrition (it is only in the water if you put it there)
High yields
Ease of harvestingSlide10
Disadvantage of Hydroponics
If something goes wrong with the water all the plants are effected = may lose whole crop
There is no soil to buffer changes:
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Disadvantage of Hydroponics
If something goes wrong with the water all the plants are effected = may lose whole crop
There is no soil to buffer changes:
eg
. In soil pH drops in soil breaking down calcium rock which brings the pH back up.
Without a buffer the pH can rise and fall uncontrollably which might kill the plantsSlide12
Two Main Types of Hydroponics
Solution Hydroponics:
Uses only water with dissolved nutrientsSolute:
Solvent:
Medium Hydroponics:
Eg: use gravel
=
use rockwool =Slide13
Two Main Types of Hydroponics
Solution Hydroponics:
Uses only water with dissolved nutrientsSolute: a substance that is dissolved = fertilizer
Solvent:
Used to dissolve solute = solvent
Medium Hydroponics:
Eg: use gravel
= use rockwool
=Slide14
Two Main Types of Hydroponics
Solution Hydroponics:
Uses only water with dissolved nutrientsSolute: a substance that is dissolved = fertilizer
Solvent:
Used to dissolve solute = solvent
Medium Hydroponics:
Uses a solid substance for the roots. Named after the type of solid they use.
Eg: use gravel = gravel culture
use
rockwool
=
rockwool
cultureSlide15
Other Forms of Hydroponics
Static Solution Culture: Most common form used in personal gardens.
Parts:-Slide16
Other Forms of Hydroponics
Static Solution Culture: Most common form used in personal gardens.
Parts:-
B
ucket with lid
-Airline to aerate water
-Basket for plants
-Water soluble nutrientsSlide17
Other Forms of Hydroponics
Continuous flow Solution Culture
: A thin constant stream of nutrient
rich water
passes the root system of the plants.
Parts:
-Slide18
Other Forms of Hydroponics
Continuous flow Solution Culture
: A thin constant stream of nutrient
rich water
passes the root system of the plants.
Parts:
-
Pipes with holes or buckets attached to them-Large container of water-Pump system that moves
water from the container
through the pipes
-Water soluble nutrientsSlide19
Nutrients Needed for Hydroponics
Slide20
Nutrients Needed for Hydroponics
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Nutrients Needed for Hydroponics
Slide22
Nutrients Needed for HydroponicsSlide23
Nutrients Needed for HydroponicsSlide24
Assignment
Article and QuestionsSlide25
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Aeroponics
Slide27
Aeroponics
Aeroponics:
Aero = air Growing plants without the use of soil or aggregates. Water and nutrients are brought to the roots by mist or humidity
.Slide28
Aeroponics
Basic A
eroponics System:Plants are grown on a support structure (mesh or mesh baskets). Roots grow out the bottom and hang in a closed off space
Roots are sprayed with fertilized water by spray bars or mist bar