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Interesting case study
http://byap.backyardmagazines.com/forum/viewtopic.php?f=13&t=9638		 Page 1 of 1
Author:  chippy [ May 10th, '11, 19:26 ]
Post subject:  Interesting case study
http://www.kennedyltu.net/research/PDF% ... %20AEM.pdf
Author:  swanberg [ May 15th, '11, 13:56 ]
Post subject:  Re: Interesting case study
That PDF is "ECONOMIC BENEFITS OF INTEGRATING A HYDROPONIC-LETTUCE SYSTEM INTO A BARRAMUNDI FISH PRODUCTION SYSTEM."
(I dislike clicking on unidentified links, so this is to help anyone else with that phobia... :headbang: )
Author:  arbe [ May 15th, '11, 13:59 ]
Post subject:  Re: Interesting case study
I've only managed to print it out so far. Haven't had a chance to read it yet but am about to sit diwn with a cuppa so I might read it now.
Author:  Stuart Chignell [ May 15th, '11, 14:47 ]
Post subject:  Re: Interesting case study
The first thing I noted was that 550m2 of growing area only uses 5% of the available N and P. I guess that includes walkways and stuff were we would actually count growung area as distinct grim area in which things are grown.

The second was the small number of benefits from integration. Since they are essentially two systems run side by side there are no capital benefits of integration. Similarly there are no electricity savings.
Author:  arbe [ May 15th, '11, 15:33 ]
Post subject:  Re: Interesting case study
And still lots of waste. The water was fed through NFT Channels once and then disposed of.
Author:  earthbound [ May 15th, '11, 15:46 ]
Post subject:  Re: Interesting case study
That is more bioremediation of aquaculture effluent rather than AP as most people would know it...
Author:  Stuart Chignell [ May 15th, '11, 16:19 ]
Post subject:  Re: Interesting case study
I don't think it is very good AP or at least not realising the potential of the concept but I'd still call it AP.

Third thing I noticed was the sensitivity of the model. How easy would it be for barra prices to drop below $12/kg and lettuce below $0.5/head?
Author:  chippy [ May 16th, '11, 18:48 ]
Post subject:  Re: Interesting case study
Sorry, should have titled it proper.
Author:  Aquastud [ May 17th, '11, 19:52 ]
Post subject:  Re: Interesting case study
Stuart Chignell wrote:
I don't think it is very good AP or at least not realising the potential of the concept but I'd still call it AP.


It is not AP because the water does not return to the fish tank.

I think the system would have great potential if the lettuce production matched the fish waste output?
Author:  earthbound [ May 18th, '11, 12:24 ]
Post subject:  Re: Interesting case study
I wouldn't think so, it's still AP, just because it's not recirculating doesn't mean it's not AP, just AP many people wouldn't do.. I think that might be why this topic was started..

viewtopic.php?f=13&t=9688
Author:  freoboy [ May 18th, '11, 12:47 ]
Post subject:  Re: Help 21 DAY OLD SYSTEM
Image should we start another thread?
Author:  chillidude [ May 18th, '11, 12:49 ]
Post subject:  Re: Interesting case study
earthbound wrote:
I wouldn't think so, it's still AP, just because it's not recirculating doesn't mean it's not AP, just AP many people wouldn't do.. I think that might be why this topic was started..

viewtopic.php?f=13&t=9688

Ahh, was wondering why Stuart started tht thread - makes sense now
Author:  Stuart Chignell [ May 18th, '11, 14:20 ]
Post subject:  Re: Interesting case study
Yeah I was trying to keep the two discussions seperate. Probably foolhardy but oh well.
:dontknow:
Author:  freoboy [ May 18th, '11, 14:22 ]
Post subject:  Re: Help 21 DAY OLD SYSTEM
freoboy wrote:
Image should we start another thread?

wtf is this doing here on this thread :shock: :?
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