{"id":1281,"date":"2021-07-01T12:36:22","date_gmt":"2021-07-01T10:36:22","guid":{"rendered":"https:\/\/urbag.eu\/?p=1281"},"modified":"2021-07-01T12:36:22","modified_gmt":"2021-07-01T10:36:22","slug":"publication-in-science-of-total-environment","status":"publish","type":"post","link":"https:\/\/webs.uab.cat\/atmosphere\/2021\/07\/01\/publication-in-science-of-total-environment\/","title":{"rendered":"Publication in Science of The Total Environment"},"content":{"rendered":"

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See full article\/ Veure l’article complet: https:\/\/doi.org\/10.1016\/j.scitotenv.2021.148689<\/a><\/strong><\/p>\n

English:<\/strong><\/p>\n

The rise of population in urban areas makes it ever more important to promote urban agriculture (UA) that is efficient in terms of water and nutrients. How to meet the irrigation demand of UA is of particular concern in urban areas where water sources are often limited. With the aim of determining how to reduce water use for irrigation while maintaining productivity and reducing environmental impacts in UA, this study explores the agronomic performance and environmental life cycle impacts and benefits of three different fertigation management practices used in a rooftop greenhouse for tomato crop in Barcelona: 1) open management (OP); 2) recirculation (RC), in which 30% of the drained, unused water is used to irrigate the crop; and 3) the same recirculated management of RC with a further reduction in fresh water input of 15%(RR). Despite the recirculation and reduction of water and nutrients, all three irrigation management practices resulted in similar yields: 16.2, 17.9, and 16.8\u00b7kg\u00b7m\u22122<\/sup>\u00a0for OP, RC, and RR, respectively. In terms of water-use efficiency, RR management was the most efficient, requiring 48.7\u00b7liters\u00b7kg\u22121<\/sup>\u00a0of tomato, followed by RC (52.4\u00b7L\u00b7kg\u22121<\/sup>) and OP (75.2\u00b7L\u00b7kg\u22121<\/sup>). RR presented an improvement of 7% in water-use efficiency. In terms of environmental performance, RC had the best performance in almost all impact categories during the operational phase, especially in regard to marine and freshwater eutrophication, with 44% and 93% fewer impacts than OP due to the recirculation of nutrients and reduced nutrient loss through leachates. In terms of infrastructure, even though recirculation management requires additional equipment, the materials present better performance in the range from 0.2 to 14% depending on the impact category. This study can support evaluation of agricultural projects in the city, through yields and water consumption presented, incentivizing good practices aligned with the sustainability of UA.<\/p>\n

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Catal\u00e0:<\/strong><\/p>\n

L’augment de poblaci\u00f3 a les zones urbanes fa que cada vegada sigui m\u00e9s important promoure l’agricultura urbana (UA) eficient en termes d’aigua i nutrients. \u00c9s especialment preocupant com satisfer la demanda de reg de la UA en zones urbanes on sovint les fonts d’aigua s\u00f3n limitades. Amb l’objectiu de determinar com reduir l’\u00fas de l’aigua per al reg mantenint la productivitat i reduint els impactes ambientals en la UA, aquest estudi explora els impactes agron\u00f2mics del rendiment, el cicle de vida ambiental i els beneficis de tres pr\u00e0ctiques diferents de gesti\u00f3 de fertirrigaci\u00f3 utilitzades en un hivernacle al terrat per al cultiu de tom\u00e0quet a Barcelona: 1) gesti\u00f3 oberta (OP); 2) recirculaci\u00f3 (RC), en la qual s’utilitza el 30% de l’aigua drenada i no utilitzada per regar el cultiu; i 3) la mateixa gesti\u00f3 recirculada de RC amb una nova reducci\u00f3 de l’aportaci\u00f3 d’aigua dol\u00e7a del 15%(RR). Malgrat la recirculaci\u00f3 i reducci\u00f3 d’aigua i nutrients, les tres pr\u00e0ctiques de gesti\u00f3 del reg van donar lloc a rendiments similars: 16.2, 17.9 i 16.8\u00b7kg\u00b7m\u22122<\/sup>\u00a0 per OP, RC i RR, respectivament. Pel que fa a l’efici\u00e8ncia en l’\u00fas de l’aigua, la gesti\u00f3 de RR va ser la m\u00e9s eficient, amb 48,7\u00b7litres\u00b7kg\u22121<\/sup>\u00a0\u00a0 de tom\u00e0quet, seguida de RC (52,4\u00b7 L\u00b7kg\u22121<\/sup>) i OP (75,2\u00b7 L\u00b7kg\u22121<\/sup>). RR va presentar una millora del 7% en l’efici\u00e8ncia de l’\u00fas de l’aigua. Pel que fa al rendiment ambiental, la RC va tenir el millor rendiment en gaireb\u00e9 totes les categories d’impacte durant la fase operativa, especialment pel que fa a l’eutrofitzaci\u00f3 marina i d’aigua dol\u00e7a, amb un 44% i un 93% menys d’impactes que l’OP a causa de la recirculaci\u00f3 de nutrients i la reducci\u00f3 de la p\u00e8rdua de nutrients a trav\u00e9s de lixiviats. Pel que fa a les infraestructures, tot i que la gesti\u00f3 de recirculaci\u00f3 requereix equips addicionals, els materials presenten un millor rendiment en el rang del 0.2 al 14% en funci\u00f3 de la categoria d’impacte. Aquest estudi pot donar suport a l’avaluaci\u00f3 de projectes agr\u00edcoles a la ciutat, a trav\u00e9s de rendiments i consum d’aigua presentats, incentivant les bones pr\u00e0ctiques alineades amb la sostenibilitat de la UA.<\/p>\n

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Figure:<\/strong> Graphical abstract. Integrated Rooftop greenhouse<\/p>\n

 <\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

Title: Optimizing irrigation in urban agriculture for tomato crops in rooftop greenhouses \/ <\/p>\n

The rise of population in urban areas makes it ever more important to promote urban agriculture (UA) that is efficient in terms of water and nutrients. How to meet the irrigation demand of UA is of particular concern in urban areas where water sources are often limited.<\/p>\n","protected":false},"author":3153,"featured_media":1289,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[32,16,76,77,78,66,79,10,69],"class_list":["post-1281","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general","tag-agriculture","tag-barcelona","tag-greenhouse","tag-icta","tag-resources","tag-rooftop","tag-tomato","tag-urbag","tag-water"],"_links":{"self":[{"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/posts\/1281","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/users\/3153"}],"replies":[{"embeddable":true,"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/comments?post=1281"}],"version-history":[{"count":0,"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/posts\/1281\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/media\/1289"}],"wp:attachment":[{"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/media?parent=1281"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/categories?post=1281"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/webs.uab.cat\/atmosphere\/wp-json\/wp\/v2\/tags?post=1281"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}