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Hydroponics

Hydroponics

Assessment

Presentation

•

Biology, Science, Other

•

11th - 12th Grade

•

Medium

Created by

Lennon Roberts

Used 23+ times

FREE Resource

22 Slides • 13 Questions

1

Hydroponics

A guide to hydroponic systems

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2

FOR BEST RESULTS PLEASE TURN DEVICE SIDEWAYS!

(with 'auto rotate' on)

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3

What does hydroponics mean?

Hydro - ponics

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4

Lets look at the word


"HYDRO - PONICS"

Lets split it into two

5

Multiple Choice

What do you think the word "Hydro" means?

1

Water

2

Soil

6

"Hydro" means

WATER

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7

Multiple Choice

What do you think the word "ponics" mean?

1

to cultivate

2

to destroy

8

"Ponics" means

to cultivate or work

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9

"HYDROPONICS"

is therefore the cultivation of crops using NUTRIENT WATER as the MAIN component, some systems also include a MEDIUM (special material)

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10

2 Main Types of HYDROPONIC systems

-Systems that use nutrient water ONLY


-Systems that use a growth medium (special material) & nutrient water

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11

Multiple Choice

What hydroponic system type do you think we have installed in school?

1

Nutrient Water ONLY system

2

Nutrient Water & Medium (special material) system

12

Yes! The system at School is a Nutrient Water with Medium (Special Material) system.

(Cocopeat is the special media)

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13

Nutrient Water ONLY systems

These systems only use WATER (with nutrients)

14

[1st example] DEEP WATER SYSTEM

[plants are suspended in a large volume of nutrient water]

- roots are in greater contact with nutrient water

- simple setup compared to other water only systems

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15

[2nd example] NFT (Nutrient Film Technique)

[plants a suspended in a thin layer of nutrient water]

-less water used

-less contamination closed system

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16

Systems that use a MEDIUM (special material) and NUTRIENT WATER

These systems use a medium and water (with nutrients)

17

[1st example] Bucket System

Uses buckets or bags filled with media which are fed by nutrient water

- can grow root crops (carrots, beet)

- can grow bearing crops (peppers, tomatoes)

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18

[2nd example] Grow Bed system

Uses a bed of material that is fed with nutrient water.

- open system less disease spread

- no need to aerate water

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19

The various types of SPECIAL MEDIUM used.

1)rockwool

2)oasis cube

3)expanded clay

4) Coco peat/fibre (used in our school system)

5) Perlite

6) Vermiculite

7)Rocks/Gravel

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20

The hydroponics system at RLSS stats:

- Two systems in one (box and bag system)

- Drip irrigation used (fully automated)

- Electricity driven system (pumps)

- Uses Cocopeat as its media

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21

There are many DIFFERENT types of hydroponic systems used throughout the world

...and many more being developed

22

Poll

Which type of system do you prefer?

Water only system

Water and Medium

23

Multiple Choice

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How are the nutrients delivered to the plants in hydroponic systems?

1

Through the water

2

It is sprinkled on the plants

3

It is placed in the growing media

4

It is already present in the growing media

24

Leafy crops & seasonings are best suited for hydroponic systems

- e.g Lettuce, pakchoi, Celery, Chive

- They are shallow rooted

- They are short term

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25

Multiple Choice

Which one of these Hydroponic systems uses nutrient Water ONLY to grow crops?

1

Grow Bed

2

Deep Water

26

Multiple Choice

Which one of these systems uses a Medium and Nutrient Water to grow crops?

1

Bucket system

2

NFT (Nutrient Film Technique)

27

Multiple Choice

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What type of crops are BEST suited for hydroponic systems?

1

Leafy greens (e.g. lettuce) & seasonings (e.g. chive)

2

Flowering crops (e.g. tomato, sweet pepper)

3

Tree crops (e.g. mango)

4

Vine crops (e.g. watermelon, pumpkin)

28

Why use Hydroponics?

Major Advantages

- Save water

- Uses less space

- Fewer pests

- Fewer Weeds

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29

Some Drawbacks

Disadvantages include

- high setup costs

- technical knowledge/skill needed to setup & maintain

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30

Multiple Choice

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What is the name of this type medium (special material) used in the RLSS hydroponic system?

1

Soil

2

Manure

3

Cocopeat or coconut fibre

4

compost

31

Multiple Choice

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What is a major ADVANTAGE of the hydroponic system.

1

It costs very little

2

It is low maintenance

3

Plants grow slower

4

It has many weeds

32

Multiple Choice

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What is a major DISADVANTAGE of the hydroponic system?

1

High start up costs

2

Low maintenance

3

Less weeds

4

More water will be used

33

Multiple Select

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Two main features of the Hydroponics system at RLSS are (Choose 2)

1

The system uses drip irrigation

2

The system utilizes pumps

3

The system uses gravel as its growth media

4

The system is solar powered

34

Poll

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Did you learn something NEW today?

Yes

No

35

END

Hydroponics

A guide to hydroponic systems

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