Extension of Aquaponic Water Use for NFT Baby-Leaf Production: Mizuna and Rocket Salad
Aquaponics is a recirculating technology that combines aquaculture with hydroponics. It allows nutrients from fish waste to feed plants and thus saves water and nutrients. However, there is a mismatch between the nutrients provided by the fish waste and plant needs. Because of this, some nutrients,...
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doaj-6749ca511e30414ea6d1dce3de91d5352021-04-02T09:06:38ZengMDPI AGAgronomy2073-43952018-05-01857510.3390/agronomy8050075agronomy8050075Extension of Aquaponic Water Use for NFT Baby-Leaf Production: Mizuna and Rocket SaladCarlo Nicoletto0Carmelo Maucieri1Alex Mathis2Zala Schmautz3Tamas Komives4Paolo Sambo5Ranka Junge6Department of Agriculture, Food, Natural Resources, Animals and Environment—University of Padova, Campus of Agripolis, 35122 Legnaro (PD), ItalyDepartment of Agriculture, Food, Natural Resources, Animals and Environment—University of Padova, Campus of Agripolis, 35122 Legnaro (PD), ItalyInstitute of Natural Resource Sciences, Campus Grüental, Zurich University of Applied Sciences, 8400 Wädenswil, SwitzerlandInstitute of Natural Resource Sciences, Campus Grüental, Zurich University of Applied Sciences, 8400 Wädenswil, SwitzerlandPlant Protection Institute, Hungarian Academy of Sciences, Centre for Agricultural Research, Herman Otto 15, 1022 Budapest, HungaryDepartment of Agriculture, Food, Natural Resources, Animals and Environment—University of Padova, Campus of Agripolis, 35122 Legnaro (PD), ItalyInstitute of Natural Resource Sciences, Campus Grüental, Zurich University of Applied Sciences, 8400 Wädenswil, SwitzerlandAquaponics is a recirculating technology that combines aquaculture with hydroponics. It allows nutrients from fish waste to feed plants and thus saves water and nutrients. However, there is a mismatch between the nutrients provided by the fish waste and plant needs. Because of this, some nutrients, notably N, tend to accumulate in the aquaponic water (APW or AP water). The aim of this study was to investigate how APW, which is depleted of P and K but still rich in N, could be further utilized. APW was used in a mesocosm and compared with APW from the same source that had been supplemented with macro-nutrients (complemented AP water or CAPW) and a hydroponic control (HC). Mizuna (M) and rocket salad (R) were used as short-cycle vegetable crops in a NFT system. The results revealed that the low production potential of APW was mainly caused by the lack of P and K. If these were supplemented, the yields were comparable to those in the HC. M yield in CAPW was significantly higher than that of HC, probably due to biostimulant effects connected to the organic components in the water as a result of fish farming. Water type, cultivation density, and intercropping significantly influenced the qualitative characteristics of the crop in terms of antioxidant compounds and minerals. Nitrate content in vegetables was lower than European regulation limits. The extended use of APW is viable if the missing nutrients are supplemented; this could be a strategy to increase the efficiency of water and nitrogen use, while further reducing environmental impact.http://www.mdpi.com/2073-4395/8/5/75biomass yieldnutritional qualitysustainabilityvegetables intercroppingsecondary metabolitesnutrient film technique |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Carlo Nicoletto Carmelo Maucieri Alex Mathis Zala Schmautz Tamas Komives Paolo Sambo Ranka Junge |
spellingShingle |
Carlo Nicoletto Carmelo Maucieri Alex Mathis Zala Schmautz Tamas Komives Paolo Sambo Ranka Junge Extension of Aquaponic Water Use for NFT Baby-Leaf Production: Mizuna and Rocket Salad Agronomy biomass yield nutritional quality sustainability vegetables intercropping secondary metabolites nutrient film technique |
author_facet |
Carlo Nicoletto Carmelo Maucieri Alex Mathis Zala Schmautz Tamas Komives Paolo Sambo Ranka Junge |
author_sort |
Carlo Nicoletto |
title |
Extension of Aquaponic Water Use for NFT Baby-Leaf Production: Mizuna and Rocket Salad |
title_short |
Extension of Aquaponic Water Use for NFT Baby-Leaf Production: Mizuna and Rocket Salad |
title_full |
Extension of Aquaponic Water Use for NFT Baby-Leaf Production: Mizuna and Rocket Salad |
title_fullStr |
Extension of Aquaponic Water Use for NFT Baby-Leaf Production: Mizuna and Rocket Salad |
title_full_unstemmed |
Extension of Aquaponic Water Use for NFT Baby-Leaf Production: Mizuna and Rocket Salad |
title_sort |
extension of aquaponic water use for nft baby-leaf production: mizuna and rocket salad |
publisher |
MDPI AG |
series |
Agronomy |
issn |
2073-4395 |
publishDate |
2018-05-01 |
description |
Aquaponics is a recirculating technology that combines aquaculture with hydroponics. It allows nutrients from fish waste to feed plants and thus saves water and nutrients. However, there is a mismatch between the nutrients provided by the fish waste and plant needs. Because of this, some nutrients, notably N, tend to accumulate in the aquaponic water (APW or AP water). The aim of this study was to investigate how APW, which is depleted of P and K but still rich in N, could be further utilized. APW was used in a mesocosm and compared with APW from the same source that had been supplemented with macro-nutrients (complemented AP water or CAPW) and a hydroponic control (HC). Mizuna (M) and rocket salad (R) were used as short-cycle vegetable crops in a NFT system. The results revealed that the low production potential of APW was mainly caused by the lack of P and K. If these were supplemented, the yields were comparable to those in the HC. M yield in CAPW was significantly higher than that of HC, probably due to biostimulant effects connected to the organic components in the water as a result of fish farming. Water type, cultivation density, and intercropping significantly influenced the qualitative characteristics of the crop in terms of antioxidant compounds and minerals. Nitrate content in vegetables was lower than European regulation limits. The extended use of APW is viable if the missing nutrients are supplemented; this could be a strategy to increase the efficiency of water and nitrogen use, while further reducing environmental impact. |
topic |
biomass yield nutritional quality sustainability vegetables intercropping secondary metabolites nutrient film technique |
url |
http://www.mdpi.com/2073-4395/8/5/75 |
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