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I read this article, in which a person claims that Aquaponics bring crop quality down by having more water than actual nutritional value.

I have read many other sources that say the opposite. Can anyone guide me towards the research that says that aquaponics/hydroponics yields crops with lower nutritional value? I couldn't find open access peer reviewed articles that say as much, but maybe I left a stone unturned.

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    $\begingroup$ this is a type of question that is a litle off topic not only here but probably on biology too,a good answer will involve a lot of things,if aquaponics is done right it is probably equal to traditional farming.it is easyer to measure the nutrient content in water then in soil,in soil you need to use more fertilizer then the plants actually need,in water culture one can measure what nutrients that needs to be added.less pesticides neds to be used in aquaponics too. $\endgroup$ – trond hansen May 3 '17 at 16:22
  • $\begingroup$ I did some research and can't find anything substantive either way. There are a variety of peer-reviewed sources that demonstrate that aquaponics are better nutritionally than hydroponics; also one paper that showed that aquaponic animal feed is nutritionally inferior to regular feed (though, not the same plants) but I couldn't find any direct comparison between aquaponic crops and soil-grown crops. I'll have to side with John's assessment of unable to refute such a broad claim. $\endgroup$ – kingledion May 5 '17 at 15:26
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First look at the article, is cites no sources and is not written by an an expert. It is written without peer review and does not seem to understand how to measure nutritional content (brix is only a measure of sugar not minerals) or what controlled conditions are. No methodology for collection, type of hydroponics, sample size, or anything else is given, this is important becasue many many thing unrelated to the farming method can effect Brix. So you can safely ignore the unscientific claim of the article and go with scientific ones, which show no difference when tested.

First always look at the source of a claim and when in doubt search google scholar first.

This is clearly editorial click bait.

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  • $\begingroup$ i dont think one can test only tomatoes nutrient content one have to compare several types of plants to be able to compare nutrient content in soil vs aquqaponics $\endgroup$ – trond hansen May 4 '17 at 19:17
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    $\begingroup$ except you are not comparing the contents of the soil you are comparing the contents of the final product, in this case tomatoes. since the original claim is baseless and you have a study showing no difference in a major hydroponic product you can safely assume no difference. More studies would be better, but that is always true. $\endgroup$ – John May 4 '17 at 21:24
  • $\begingroup$ @john.i do sort of mention this in my comment to the question so i do agree whith you,one gets out what has been put in to the system. $\endgroup$ – trond hansen May 5 '17 at 4:43
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    $\begingroup$ The article makes such a broad sweeping claim completely refuting it is impossible, If you try hard enough I am sure you could grow a plant poor in some nutrient hydroponically just as you could in soil, use nutrient poor media for instance. this is why the burden of proof would be on the claimant since they are making such a strong an broad claim. I used tomatoes because that is the only product the article actually names and it is one of the more widely cultivated hydroponic crop so it makes a good reference. $\endgroup$ – John May 5 '17 at 4:46
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    $\begingroup$ If your actually looking papers on factors that effect nutrients in hydroponics you might start with papers on "response to variable nutrient media". But again each will be species or at least crop specific, since different plants need/tolerate different nutrient levels $\endgroup$ – John May 8 '17 at 1:36

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