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What iAVs Is
- 1. What iAVS Is A Brief Overview of the Integrated Aqua-Vegeculture System Gary Donaldson www.iavs.info
- 2. www.iavs.info iAVs is a multitrophic polyculture food production method - that establishes (and benefits from) the symbiotic interdependence (mutualism) between the cultivation of freshwater fish species and higher plants – notably vegetables.
- 3. www.iavs.info Put simply, it’s a food production system in which plants derive nutrients from the metabolic wastes of fish.
- 4. www.iavs.info Its most tangible outcomes are clean fresh fruit and vegetables…
- 6. www.iavs.info iAVs was the brainchild of Dr Mark R McMurtry and was developed and investigated in the Department of Horticulture Science at North Carolina State University in the mid-1980’s.
- 7. www.iavs.info iAVs was also the first successful ‘closed loop’ integration of fish and edible plants – and is the progenitor of all ‘systems’ subsequently referred to as Aquaponics.
- 8. www.iavs.info iAVs was experimentally proven and described – and the results were published in peer- reviewed scientific journals.
- 9. www.iavs.info Following completion of the iAVs research program, the United States Department of Agriculture funded a successful commercial demonstration trial in 1991-92… …after which, NCSU determined that the iAVs was ready for commercialisation.
- 10. For practical purposes, iAVs consists of… www.iavs.info
- 12. …a grow bed full of sand... www.iavs.info
- 13. ...and a timer-controlled water pump. www.iavs.info 00:00:00
- 14. www.iavs.info Various fruit and vegetable seedlings are planted in the sand grow bed… 00:00:00
- 15. …and the fish tank is filled with water and stocked with freshwater fingerlings. www.iavs.info Various fruit and vegetable seedlings are planted in the sand grow bed… 00:00:00
- 16. At predetermined intervals, the pump starts… www.iavs.info 00:00:01
- 17. …and raises water (and fish wastes) from the fish tank to the sand grow bed. www.iavs.info 00:00:02
- 18. The water flows into and along the furrows… www.iavs.info 00:00:10
- 19. …before percolating down through the sand… www.iavs.info 00:02:00
- 20. …and draining back into the fish tank. www.iavs.info 00:04:00
- 21. Once the beds are saturated, the timer stops the pump. www.iavs.info 00:30:00
- 22. As the water drains, it draws a full charge of fresh air into the sand bed. www.iavs.info 00:30:00 Fresh air
- 23. …and for the ensuring 90 minutes, the bed rests. www.iavs.info 01:59:00 Fresh air
- 24. At about the 2-hour mark, the pump starts again…and the cycle repeats itself. www.iavs.info 00:00:01
- 25. www.iavs.info 00:00:01 About 8 such irrigation events occur – during daylight hours – per day.
- 26. www.iavs.info 00:00:01 The beds rest overnight – no pumping.
- 27. www.iavs.info During the flood and drain cycles, the solid wastes in the water are trapped on the surface in the furrows…
- 28. www.iavs.info …where they form a detritus layer which feeds soil microbes that live in the sand.
- 29. www.iavs.info The microbes convert the wastes into plant nutrients…
- 30. www.iavs.info …which feed the plants and cause them to grow.
- 31. Essentially, iAVs is a food production method in which we feed the fish. The fish produce wastes that, left untreated, will eventually become toxic – and kill them. iAVs facilitates the conversion of the wastes into plant nutrients. In taking up the nutrients, the plants grow to produce food – while cleaning the water for the fish. www.iavs.info
- 32. iAVs is among the most productive, resilient and sustainable food production systems ever devised… www.iavs.info
- 33. …and it’s infinitely scalable, too. www.iavs.info
- 34. Copyright Notice © 2018 Mark R McMurtry PhD and Gary Donaldson All rights reserved. Apart from fair dealing for the purposes of study, research, criticism or review, as permitted under the Copyright Act, no part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise without the written permission of the authors. While every precaution has been taken in the preparation of this presentation, the authors assume no responsibility for errors and omissions. Neither is any liability assumed for damages resulting from the use of the information contained therein. -o0o- www.iavs.info
Editor's Notes
- iAVs is multitrophic polyculture food production method that establishes and benefits from the symbiotic interdependence (mutualism) between the cultivation of freshwater fish species and higher plants – notable vegetables.
- Basically, it’s a food production system in which plants derive nutrients from the metabolic wastes of fish.
- Its most tangible outcomes are clean fresh fruit and vegetables…
- …and freshwater fish.
- iAVs was the brainchild of Dr Mark R McMurtry and was developed and investigated in the Department of Horticulture Science at North Carolina State University in the mid-1980’s. Co-investigations included Professors Emeritus Paul V Nelson, Dr Douglas C Sanders, Merle H Jensen – and others.
- iAVs was also the first successful ‘closed loop’ integration of fish and edible plants – and is the progenitor of all ‘systems’ subsequently referred to as Aquaponics.
- iAVs was experimentally proven and described – and the results were published in peer-reviewed scientific journals.
- Following completion of the iAVs research program, the United States Department of Agriculture funded a successful commercial demonstration trial in 1991-92… …after which, NCSU determined that the iAVs was ready for commercialisation.
- For practical purposes, iAVs consists of a fish tank…
- For practical purposes, iAVs consists of a fish tank…
- …a grow bed full of sand...
- ...and a timer-controlled water pump.
- The fish tank is stocked with freshwater fingerlings and various fruit and vegetable seedlings are planted in the sand grow bed.
- The fish tank is stocked with freshwater fingerlings and various fruit and vegetable seedlings are planted in the sand grow bed.
- At predetermined intervals, the pump starts and moves water (and fish wastes) from the fish tank to the sand grow bed.
- At predetermined intervals, the pump starts and moves water (and fish wastes) from the fish tank to the sand grow bed.
- At predetermined intervals, the pump starts and moves water (and fish wastes) from the fish tank to the sand grow bed.
- At predetermined intervals, the pump starts and moves water (and fish wastes) from the fish tank to the sand grow bed.
- At predetermined intervals, the pump starts and moves water (and fish wastes) from the fish tank to the sand grow bed.
- Once the beds are saturated, the timer stops the pump. The beds drain completely…drawing in a complete charge of fresh air….
- Once the beds are saturated, the timer stops the pump. The beds drain completely…drawing in a complete charge of fresh air….
- Once the beds are saturated, the timer stops the pump. The beds drain completely…drawing in a complete charge of fresh air….
- At predetermined intervals, the pump starts and moves water (and fish wastes) from the fish tank to the sand grow bed.
- At predetermined intervals, the pump starts and moves water (and fish wastes) from the fish tank to the sand grow bed.
- At predetermined intervals, the pump starts and moves water (and fish wastes) from the fish tank to the sand grow bed.
- …a grow bed full of sand...
- …a grow bed full of sand...
- …a grow bed full of sand...
- …a grow bed full of sand...
- Essentially, iAVs is a food production method in which we feed the fish. The fish produce wastes that, left untreated, will eventually become toxic – and kill them. iAVs facilitates the conversion of the wastes into plant nutrients. In taking up the nutrients, the plants grow to produce food – while cleaning the water for the fish.
- Essentially, iAVs is a food production method in which we feed the fish. The fish produce wastes that, left untreated, will eventually become toxic – and kill them. iAVs facilitates the conversion of the wastes into plant nutrients. In taking up the nutrients, the plants grow to produce food – while cleaning the water for the fish.
- Essentially, iAVs is a food production method in which we feed the fish. The fish produce wastes that, left untreated, will eventually become toxic – and kill them. iAVs facilitates the conversion of the wastes into plant nutrients. In taking up the nutrients, the plants grow to produce food – while cleaning the water for the fish.