Abstract
In this preliminary article we present data on plant nutrient concentrations in aquaponic systems, and compare them to nutrient concentrations in “standard” hydroponic solutions. Our data shows that the nutrient concentrations supplied by the fish in aquaponic system are significantly lower for most nutrients, compared to hydroponic systems. Nevertheless, plants do thrive in solutions that have lower nutrient levels than “standard” hydroponic solutions. This is especially true for green leafy vegetables that rarely need additional nutritional supplementation. It is concluded that in the highly complex system of aquaponics, special care has to be taken, via continuous monitoring of the chemical composition of the circulating water, to provide adequate concentrations and ratios of nutrients, and special attention has to be paid to the potentially toxic component, ammonium. If certain plants require nutrient supplementation, we consider that one based on organic substances would be most beneficial. However, protocols for the application of such nutrient amendments still need to be developed.
Highlights
Nutrient supply of plants in aquaponic systemsAndras Bittsanszky a, Nikolett Uzinger b, Gabor Gyulai c, Alex Mathis d, Ranka Junge d, Morris Villarroel e, Benzion Kotzen f, Tamas Komives a,g
In Bittsanszky et al (2015), we recently, briefly manage nutrient levels in a recirculating water system discussed the problems related to plant protection in in order to provide plants with optimum concentrations aquaponics and here we raise the important whilst avoiding any negative impact on the fish and the question of dealing with plant nutrition in these beneficial microorganisms within the system
The basic question we address is how to
Summary
Andras Bittsanszky a, Nikolett Uzinger b, Gabor Gyulai c, Alex Mathis d, Ranka Junge d, Morris Villarroel e, Benzion Kotzen f, Tamas Komives a,g. Our data shows that the nutrient concentrations supplied by the fish in aquaponic system are significantly lower for most nutrients, compared to hydroponic systems. Plants do thrive in solutions that have lower nutrient levels than “standard” hydroponic solutions. This is especially true for green leafy vegetables that rarely need additional nutritional supplementation. In Bittsanszky et al (2015), we recently, briefly manage nutrient levels in a recirculating water system discussed the problems related to plant protection in in order to provide plants with optimum concentrations aquaponics and here we raise the important whilst avoiding any negative impact on the fish and the question of dealing with plant nutrition in these beneficial microorganisms within the system
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