94-415 Makapipipi St Mililani, HI 96789 www.marisgardens.com
Lettuce Production 28 lettuce benches Total: 10,560 sq ft · Average of 800-1000 lbs sold a week
Diversification of Leafy Crops in Aquaponics Tropical climate encourages ideal environment for growing lettuce year-round Hawaii is capable of producing 100% of locally consumed lettuce Red Lollo “Natividad“, Red Lollo “Antago“ (L to R) Red Romaine, Green Romaine, and Green Oak (L to R)
Japanese Cucumbers · 378 15 gallon cucumber plants
OTHER SUCCESSFUL CROPS Blueberries “Emerald” Green Onions Chinese parsley Blueberry “Jewel”
UNSUCCESSFUL CROP DEFORMED CARROTS
HAWAII PRODUCE IMPORTS • Vegetables: 34% locally grown 66% imported • Fruits: 36% locally grown 64% imported • Every dollar spent on imported food supports agribusinesses outside of the Hawaii economy
SUPPLEMENTAL FERTILIZERS • BONE MEAL • KELP • CHEALATED IRON
WATER CHEMISTRY Moving water and adding air to the system is costly, but maintaining water quality optimizes production.
INPUTS Labor and Building Materials Fish Feed
WASTE EQUALS FOOD Composting worms are used in our biofilters to consume fish waste and produce worm castings. We are producing our own worms using the waste from our produce in this worm composting bin.
FISH RACEWAYS • We are using a total of 7 raceways: • Utilizing about 73,000 gallons of • water • - Raising 12,000 fish in our aquaponic systems
WEAKNESSES OF AQUAPONIC PRODUCTION • Lack of technical knowledge to produce product at a commercial scale. • Lack of human resources to work with aquaponics systems. • Lack of fishmeal for organic based feed. • Mechanization of the planting and harvesting procedures have not been created and will be costly. • Competing with the industrial growers on the mainland on a price point basis will be difficult. • Delivering small quantities of one crop is inefficient. • High start up costs for infrastructure will prohibit some farmers from entering aquaponics. • Economic viability of this farming method is still questionable.
BENEFITS OF AQUAPONIC PRODUCTION · Uses 2% of the water that conventional farming requires · Zero use of petrochemical fertilizers and pesticides ·Demands healthy water chemistry for the fish which limits organic pesticides and other additives even further · Does not require agricultural land and may be built on various landscapes such as asphalt, rooftops, and in urban areas · Uses existing technologies, infrastructure, power and water of the site · Only energy input is electrical and may be supplied off the grid · The most environmentally sustainable method of farming available to current technology
AQUAPONIC RESOURCES Aquaponic Tours in Hawaii Mari’s Gardens – Mililani, Oahu Friendly Aquaponics –Hilo, Hawaii Olomana Gardens – Waimanalo, Oahu Suppliers Island Grower Supplies –liners and net pots Waimanalo Feed –residential systems, supplies Aquatic Eco-Systems, Inc (Apopka, Fl) –Aquaculture supplies Education UH College of Tropical Agriculture and Human Resources (CTAHR)