Assessment of a sargassum-based liquid biofertilizer for enhanced banana cultivation in small-scale family farms

Q1 Environmental Science

Case Studies in Chemical and Environmental Engineering Pub Date : 2025-06-19 DOI:10.1016/j.cscee.2025.101252

Yaset Rodríguez-Rodríguez , Laura Isabel Soldevilla-Hernández , Miguel Ángel Guevara , Gustavo Gandini , Ulises Javier Jáuregui-Haza

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Abstract

The substantial influxes of pelagic Sargassum spp. along Caribbean coasts pose environmental challenges for the region's countries, but also offer opportunities for sustainable valorization. This research develops and evaluates a Sargassum-Based Liquid Biofertilizer (SBLB) produced via anaerobic fermentation, uniquely reducing heavy metal content (e.g., arsenic from 61.6 to 4.08 mg/kg) while retaining beneficial nutrients and microorganisms. This biofertilizer was applied to banana cultivation in Dominican small-scale family farms, SBLB enhanced leaf emission (p < 0.05 in two of three farms) compared to a traditional biofertilizer (BLB) and maintained Black Sigatoka disease below intervention thresholds, matching BLB performance. Chemical and microbiological analyses confirmed SBLB’s safety and efficacy, positioning it as a sustainable alternative to chemical fertilizers. This approach mitigates Sargassum waste and supports organic farming, offering a replicable model for coastal agricultural systems.

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一种以马尾草为基础的液体生物肥料在小型家庭农场香蕉种植中的应用评估

加勒比沿岸大量涌入的远洋马尾藻对该区域各国构成了环境挑战，但也为可持续增值提供了机会。本研究开发并评价了一种通过厌氧发酵生产的马尾草基液体生物肥料（SBLB），独特地将重金属含量（如砷从61.6 mg/kg降至4.08 mg/kg）降低，同时保留了有益的营养物质和微生物。该生物肥料在多米尼加小规模家庭农场的香蕉种植中施用，SBLB提高了叶片排放(p <；与传统生物肥料（BLB）相比，3个农场中的2个（0.05），并将黑叶斑病维持在干预阈值以下，与BLB的性能相匹配。化学和微生物分析证实了SBLB的安全性和有效性，将其定位为化肥的可持续替代品。这种方法减少了马尾藻的浪费，并支持有机农业，为沿海农业系统提供了可复制的模式。

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