Use of Recovered Struvite and Ammonium Nitrate in Fertigation in Tomato (Lycopersicum esculentum) Production for Boosting Circular and Sustainable Horticulture
Use of Recovered Struvite and Ammonium Nitrate in Fertigation in Tomato (Lycopersicum esculentum) Production for Boosting Circular and Sustainable Horticulture
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DOI：
10.3390/agriculture11111063
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发表时间：
2021-11-01
影响因子：
3.6
通讯作者：
Biel, Carmen
中科院分区：
文献类型：
--
作者：
Carreras-Sempere, Mar;Caceres, Rafaela;Biel, Carmen
鸟粪石和硝酸铵是从广泛研究的从废物流中去除磷（P）和氮（N）的工艺中获得的产物。为了促进园艺的循环，这些回收的产品应该应用于食用作物。特别是，鸟粪石还没有实施灌溉施肥作为唯一的磷肥来源。为此，进行了两个生长季的番茄无土栽培系统温室试验。本研究的目的是比较农业和环境效益的回收产品用于营养液施肥灌溉（NS）合成肥料处理。此外，两个不同的N浓度的NS进行了测试，以评估对N-浸出的影响。此外，进行鸟粪石溶解试验以确保其溶解度。鸟粪石的增溶效果令人满意。结果表明，这两种营养回收产品可以用作NS的肥料，因为它们在总产量生产和果实品质方面的非统计学意义。然而，硝酸铵处理，取决于作物品种，表现出较低的商品产量。此外，氮浓度输入的变化表现出渗滤液浓度的差异，与N淋溶的百分比值从36%到13%。这些结果为未来利用养分回收产品和技术数据优化灌溉施肥策略提供了更深入的见解。
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.