SAFS 405 Lecture Notes - Lecture 7: Hydroponics, Vermicompost
9 Dec 2017
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Document Summary
Hydroponic: a system of growing plants in a nutrient solution with or without the use of an artificial medium (sand, gravel, vermiculture) Aquaponic: a system of aquaculture in which the waste produced by farmed fish or other aquatic animals supplies nutrients necessary for plants (which in turn purify the water) Hydroponics are done in controlled environments (greenhouse) Rockwool: uses an inert media made from molten rock that is spun into a mass of fibers. Holds no nutrients, but holds the plant in place. Nutrient film technique (nft): doesn t use media. Nutrient solution is pumped and run past the plants that growing. Wick, ebb and flow, drip, water culture, aeroponic, nft. When it leaves the system, you have to then dispose of it. Closed systems: nutrients are captured and reused. You also need to monitor for pathogens and see if there is enough nutrients to be plant available.
