Additional topics on aquaponics
Sustainable, local alternatives for aquaponic inputs
Organic plant fertilizers Chapter 6 discussed how even balanced aquaponic systems can experience nutrient deficiencies. Although fish food pellets are a whole feed for fish, they do not necessarily have the right quantities of nutrients for plants. Generally, fish feeds have low iron, calcium and potassium values. Plant deficiencies can also arise in suboptimal growing conditions, such as cold weather and winter months. Thus, supplementary plant fertilizers may be necessary, particularly when growing fruiting vegetables or those with high nutrient demands.
· Food and Agriculture Organization of the United NationsSecuring water levels for a small-scale unit
One of the most common disasters for small-scale or commercial aquaponic units is a loss-of-water event where all of the water drains from the unit. This can be catastrophic and kill all of the fish, destroying the system. There are several common ways for this to happen, including electricity cuts, blocked pipes, drains left open, forgetting to add new water or disruption of water flow by animals. All of these issues can be fatal for fish in a matter of hours if problems are not dealt with immediately.
· Food and Agriculture Organization of the United NationsIntegrating aquaponics with other gardens
Aquaponics can be used alone, but it becomes a stronger tool for the small-scale farmer when used in conjunction with other agriculture techniques. It has already been discussed how other plants and insects can be grown to supplement the fishes’ diet, but aquaponics can also help the rest of the garden. Generally, the nutrient-rich water from the aquaponic units can be shared among other plant production areas. Irrigation and fertilization Aquaponic units are a source of nutrient-rich water for vegetable production.
· Food and Agriculture Organization of the United NationsExamples of small-scale aquaponic setups
Aquaponics has been used successfully in a wide range of locations. Moreover, aquaponic techniques have been revised to meet diverse needs and goals of farmers beyond the common IBC or barrel methods (described throughout this publication). There are many examples, but these were chosen to highlight the adaptability and diversity of the aquaponic discipline. Aquaponics for livelihood in Myanmar A pilot-scale aquaponic system was built in Myanmar to promote micro-scale farming during the implementation of an e-Women project funded by the Italian Development Cooperation.
· Food and Agriculture Organization of the United Nations