System Efficiency and Resource Recovery in Circular Horticulture

A special issue of Agriculture (ISSN 2077-0472). This special issue belongs to the section "Agricultural Product Quality and Safety".

Deadline for manuscript submissions: closed (31 December 2021) | Viewed by 3974

Special Issue Editors


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Guest Editor
Department of Agricultural, Forest, and Food Sciences (DISAFA), Vegetable Crops and Medicinal and Aromatic Plants (VEGMAP), University of Turin, Grugliasco, Italy
Interests: horticultural sciences; advanced production systems; postharvest of fresh produce; urban horticulture
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Research Institute on Terrestrial Ecosystems-National Research Council (IRET-CNR), Via Madonna del Piano 10, 50019 Sesto Fiorentino, FI, Italy
Interests: plant ecophysiology; plant responses; signalling under abiotic stress; antioxidant compounds; trace metals; soil-plant-water-nutrient relations; biostimulants; cropping system modelling; crop physiology; photosynthesis and chlorophyll fluorescence; greenhouses gas emissions; biosphere-atmosphere interactions; micrometeorological measures; precision agriculture
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Ensuring that nutritious food and water are available, accessible and affordable for all is one of the main goals of present time. The ever-increasing world population is challenging food production. Solutions to achieve these goals are unfolding. With growing importance, there is a need to produce more with less inputs, especially under conditions of scarcity—we need solutions of high resource efficiency, sustainability, and with limited effect on the environment. Advanced production techniques for farm, crop and climate management, precise application and choice of resources, as well as circularity of production systems, can ensure smart and environmentally sustainable food systems by using irrigation water, nutrients and horticulture resources (such as substrate composition and energy consumption) more efficiently. Promising technologies and management options that increase productivity of horticultural products to meet the growing food demand without deteriorating production environments are necessary, as is life cycle assessments of materials, processes and products. Residues and waste recovery and reuse are especially valuable during production, postharvest processing and along the supply chain.

This Special Issue welcomes original research and review articles that provide insights into all topics related to sustainable and circular horticulture. The scope of submission includes all aspects of sustainability (economic, environmental, and social) in horticulture, as well as the efficiency of resources, input and outputs, in different climatic conditions and agrosystems. Work related to reducing, reusing, recycling and recovering materials in the horticultural sector is welcome.

Prof. Dr. Silvana Nicola
Dr. Sara Di Lonardo
Guest Editors

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Published Papers (1 paper)

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Research

15 pages, 5880 KiB  
Article
Use of Recovered Struvite and Ammonium Nitrate in Fertigation in Tomato (Lycopersicum esculentum) Production for boosting Circular and Sustainable Horticulture
by Mar Carreras-Sempere, Rafaela Caceres, Marc Viñas and Carmen Biel
Agriculture 2021, 11(11), 1063; https://doi.org/10.3390/agriculture11111063 - 28 Oct 2021
Cited by 12 | Viewed by 3206
Abstract
Struvite and ammonium nitrate are products obtained from widely studied processes to remove phosphorus (P) and nitrogen (N) from waste streams. To boost circularity in horticulture, these recovered products should be applied to edible crops. Particularly, struvite has not been implemented in fertigation [...] Read more.
Struvite and ammonium nitrate are products obtained from widely studied processes to remove phosphorus (P) and nitrogen (N) from waste streams. To boost circularity in horticulture, these recovered products should be applied to edible crops. Particularly, struvite has not been implemented in fertigation as the unique source of P fertilizer. Therefore, a soilless system greenhouse experiment was conducted for tomato crops during two growing seasons. This study aims to compare the agronomic and environmental effectiveness of recovered products used in a nutrient solution for fertigation (NS) to synthetic fertilizer treatment. Moreover, two different N concentrations of the NS were tested to evaluate the impact on the N-leaching. Additionally, struvite dissolution tests were performed to ensure its solubility. Satisfactory results of struvite solubilization were obtained. Results show that both nutrient-recovered products can be used as fertilizers in NS, due to their non-statistical significance in total yield production and fruit quality. However, ammonium nitrate treatment, depending on the crop variety, showed a lower marketable yield. Moreover, the variation on N concentration input exhibited leachate concentration differences, with N leached percentage values from 36 to 13%. These results give deeper insights into the future potential utilization of nutrient-recovered products and technical data to optimize fertigation strategies. Full article
(This article belongs to the Special Issue System Efficiency and Resource Recovery in Circular Horticulture)
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