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The Blue Jackets

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by

Elli Kellogg

on 14 March 2013

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Transcript of The Blue Jackets

Sans the Soil: A Dive Into Hydroculture Our Results: Terms to Know Hydroculture: an alternative form of horticulture that utilizes soiless mediums, specifically, aquatic atomostpheres to grow plants. Aquaponics: a sustainable form of food production that involves aquaculture (raising aquatic life) and a symbiotic relationship with hydro-grown plants. Hydroponics: a method of growing plants that utilizes mineral nutrients and water as a medium for growth. Plants are usually placed within a certain growing medium such as clay pellets or gravel, and suspended in water. The process is an alternative method to using soil as a medium for plant growth. Did you know..... Hydroponics is derived from the Greek word "hudor" (later translated to hydro)- meaning water, and "ponos"- to work, literally translating to: "to work with water". Background Now Let's See What We Did:
-Rockwool
-Gravel
-20 Plastic Net Pots
-Five small, square planters
-Expanded Clay Pellets
-Spinach seeds
-4 3 Gallon Plant Trays
-Guano Liquid Nutrient
(for soil and water)
-Hydro Bubbler System
-Water Set Up: -5 Net Pots per 3 gal plant tray
-4 seeds per Net Pot
-Each plant tray gets 5 net pots filled
with different mediums. Box A- Clay
Pellets, Box B- Rockwool, Box C-
Rock Gravel, Box D- Soil
-In Boxes A-C: filled with one gallon
of water, with added nutrients (according
to Guano Nutrient directions). Plants in soil
are watered with nutrients diluted in water,
1 cup.
-Hydro Bubblers placed in Boxes A-C. Materials: Plant Height in Cm Quantitative: Hypothesis:
We postulate that the Spinach plants will initially grow faster in Rockwool, but will develop fuller root systems, and overall more stable fitness in the Expanded Clay Pellets. We also postulate that the plants grown in soil will develop at a slower rate than the other three growth mediums (gravel, rockwool, expanded clay pellets). -Initially the plants potted in soil
grew at a much slower rate, while the plants in the Extended Clay Pellets exhibit a steady, and faster growth rate than Rockwool or Gravel. In the end, plants potted in soil experienced a growth spurt and exceeded gravel growth.
Qualitative: -As we examined the plants during growth,
the plants grown in gravel maintained a
small and weak appearance, while Rockwool
eventually took on the same appearance in the middle of week 2. The extended clay pellets maintained bright coloring, and a healthy appearance throughtout the experiment, as did plants grown in soil. Pro's and Con's Hydro. Advantages:
-Soil gardens can offer more complete amount of nutrients and minerals to your plants.
-They also contain naturally occurring good bacteria, that a farmer does not necessarily need to add in order for healthy growth.

Soil Advantages: -Allows for greater customization for your garden.
-You are able to grow more plants, more efficiently
in a smaller area.
-Especially beneficial for urban farming, and main-
taining renewable resources such as re-using water.
-Can be self sustainable if set up as an aquaponic
system.
-Does not reuire extensive space

Hydro Disadvantages Soil Disadvantages -Require more initial work and cost
-Less complete types of nutrients.
-Less research as to what plants grow
more successful within specific mediums
so trial and error is still a part of the
growth process. -You have less control over pests and diseases.
-Not as much space for oxygen exchange.
-Soil requires more water, and water that is non
renewable.
-Requires extensive land space and can be harmful
to surrounding ecosystems from run-off and pesti-
cides.
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