Hydroponics is a method of growing plants without soil, instead using mineral nutrient solutions in a water solvent. It involves growing plants in nutrient-rich water or hydroponic medium. There are several types of hydroponic systems that circulate this nutrient solution, including deep water culture, nutrient film technique (NFT), aeroponics, drip irrigation, and flood and drain. Key components of any hydroponic system are the container, growing medium, water, electrical system, and nutrients. The document discusses the history of hydroponics and provides details on essential plant nutrients, hydroponic nutrient recipes, and various hydroponic growing media and their characteristics.

2. What is
Hydroponics?

3. Hydroponics
Hydro Ponics

4. Every Hydroponics System
Has These Components
Container
Inert Media
Electrical
Plumbing
Water

5. Humus
Decomposed
Minerals
Soil Hydroponics
Inorganic
Component
Organic
Component
Soil
Solution
Contact Plant
Roots
Mineral & Water
Uptake
Inorganic
Fertilizers
Nutrient
Solution

6. ll the factors of plant
growth naturally supplied by soil can be coordinated artifially by the
use of water and chemicals into a crop production method capable
of competing with agriculture.
-Hydroponics Defination (By William Gericke)
the production of plants in nutrient-rich
solutions or moist inert material, instead of soil
-Hydroponics Defination (By Wester Dictionary)
the science of growing plants without the use of soil, but by use of
an inert medium, such as gravel, sand, peat, vermiculite, pumice, or
sawdust, to which is added a nutrient solution containing all the
essential elements needed by the plant for its normal growth and
development.”
-Hydroponics Definition (By Howard Resh)

16. Types of
Hydroponics System

17. Deep Water Culture
•
•
•
•
•
•

18. Plant Staging
•
•
•
•

26. Nutrient Film Technique (NFT)
•
•
•
•
•
•
•

36. Aeroponics
•
•
•
•
•
•

45. Drip Irrigation
•
•
•
•
•

52. Flood & drain / Ebb & Flow
•
•
•
•
•

58. Aquaponics
•
•
•
•
•

68. History of
Hydroponics

69. Robert Boyle (1966)

70. John Woodward (1699)

72. Jean Boussingault (1851-1855)

73. Julius Sachs & Wilhelm Knop
(1860)

75. William Gericke (1920-1930)

76. Time Magazine, March 3, 1937

79. Dennis Hoagland & Daniel Arnon

80. Hoagland
solution

84. Allen Cooper (1965)

85. James Rakocy (1970)

86. Currently, hydroponics is practiced all over the globe.
The hydroponics market is set to grow at a CAGR of 6.8%
in the coming years.
The hydroponics industry is expected to grow to 35.51
billion dollars by 2024.

87. Hydroponics
Nutrients

88. Essential plant nutrients

89. Nutrient Recipe for tomatoes (By Howard Resh)

90. Recipe for tomatoes by Cornell’s Controlled Environment
Agriculture group

91. Control over growth with nutrients
•
•
•
•
•

92. By knowing water, you
know all hydroponics.

93. Water parameters to check
TDS pH DO

94. •
•
•
•
Total Dissolved Solids (TDS)

95. •
•
•
•
•
•
pH

96. •
• less developed roots, limited nutrient
absorption, and an increased population of undesirable
bacteria and fungi.
• Water temperature is checked to check amount of dissolved
oxygen.
DO

104. Making / Adjusting Nutrients
Add Salts
•
•
•
Check TDS
•
•
Check pH
•
•
•

105. Hydroponics
Growing Medium

106. Purpose of growing media
• Structural support for your plant - something for the roots to ‘anchor’ into!
• Insulation for your plants’ roots to guard against temperature extremes.
• Retain a mix of moisture and air space for healthy roots.
• Exchange cations - retain and exchange minerals - nutrients for your plants.
• Provide a home for beneficial biology around the root zone

107. Hydroponics Medium Characteristics
Water Holding
Capacity
Air Filled
Porosity
Air Filled
Porosity

108. Coco coir
The shredded inner pith of the coconut husk.
pH 6 WHC High AFP Med CEC Med
Perlite
Superheated volcanic silicous rock
pH 7 WHC Med AFP High CEC
Rockwool
Heated basalt rock and chalk spun into a fibrous, lightweight material.
pH 8 WHC High AFP Med CEC
Low
CEC Low

109. Clay balls
Heat-expanded, round-shaped clay pebbles of mixed sizes
pH 7 WHC Low AFP High CEC Low
Oasis Cubes
Manufactured from water absorbent foam, Phenolic foam,
also known as Floral Foam
pH 7 WHC High AFP High CEC
Gravels
Heated basalt rock and chalk spun into a fibrous, lightweight material.
pH 7 WHC Low AFP High CEC
High
CEC Low