TY - JOUR
T1 - Environmental Tradeoffs between Nutrient Recycling and Greenhouse Gases Emissions in an Integrated Aquaculture-Agriculture System
AU - Groenveld, Thomas
AU - Lazarovitch, Naftali
AU - Kohn, Yair Y.
AU - Gelfand, Ilya
N1 - Funding Information:
We thank Matthias Overduin, Angelika Yurina, and Mais Dzhafarov for help with the field work at the Arava R&D station where the experiments were performed. Financial support for this work was provided by the Israel Ministry of Agriculture and Rural Development, Israel (grant number 3000013059), the Keren Kayemeth Le Israel-Jewish National Fund, Israel, the Goldinger Trust, USA, the Daniel Koshland Fund for Interdisciplinary Research, USA, and the JCA Foundation.
Publisher Copyright:
Copyright © 2020 American Chemical Society.
PY - 2020/8/4
Y1 - 2020/8/4
N2 - The unlimited nitrogen (N) availability that has characterized crop production in the last few decades is accompanied by environmental burdens, including the greenhouse gas (GHG) emissions associated with fertilizer production, post-application nitrate (NO3-) pollution of water bodies, and emissions of reactive gaseous N forms into the atmosphere. Here, we quantified the environmental tradeoffs of replacing mineral N fertilizer with NO3- and ammonium (NH4+) originating from effluent water of aquaculture in a cucumber (Cucumis sativus) cultivation system. While the yield, nitrogen use efficiency (NUE), and NO3- leaching were similar between the cucumbers fertilized and irrigated (fertigated) by aquaculture effluent water containing 100 mg of NO3-N L-1 (AN), by aquaculture effluent water supplemented with NH4+ (AN+), or by tap water with NO3- and NH4+ added (FN+), there were significant differences in the nitrous oxide (N2O) emissions between the systems. The N2O emissions peaked after each irrigation event followed by an exponential decline. The cumulative N2O emissions were between 60 and 600 g N2O-N ha-1, smaller than predicted based on a fertilizer application rate of 600 kg N ha-1 and were in the order AN+ ≫ FN+ > AN.
AB - The unlimited nitrogen (N) availability that has characterized crop production in the last few decades is accompanied by environmental burdens, including the greenhouse gas (GHG) emissions associated with fertilizer production, post-application nitrate (NO3-) pollution of water bodies, and emissions of reactive gaseous N forms into the atmosphere. Here, we quantified the environmental tradeoffs of replacing mineral N fertilizer with NO3- and ammonium (NH4+) originating from effluent water of aquaculture in a cucumber (Cucumis sativus) cultivation system. While the yield, nitrogen use efficiency (NUE), and NO3- leaching were similar between the cucumbers fertilized and irrigated (fertigated) by aquaculture effluent water containing 100 mg of NO3-N L-1 (AN), by aquaculture effluent water supplemented with NH4+ (AN+), or by tap water with NO3- and NH4+ added (FN+), there were significant differences in the nitrous oxide (N2O) emissions between the systems. The N2O emissions peaked after each irrigation event followed by an exponential decline. The cumulative N2O emissions were between 60 and 600 g N2O-N ha-1, smaller than predicted based on a fertilizer application rate of 600 kg N ha-1 and were in the order AN+ ≫ FN+ > AN.
UR - http://www.scopus.com/inward/record.url?scp=85089192339&partnerID=8YFLogxK
U2 - 10.1021/acs.est.0c00869
DO - 10.1021/acs.est.0c00869
M3 - Article
C2 - 32790417
AN - SCOPUS:85089192339
SN - 0013-936X
VL - 54
SP - 9584
EP - 9592
JO - Environmental Science & Technology
JF - Environmental Science & Technology
IS - 15
ER -
