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Pacific

AGRISUB – Organic farming substrates for the sustainable use of natural resources, carbon sequestration and the control of invasive species

Territory

French Polynesia

Thematic scope

Sustainable management

Implementing partners

VAIHUTI FRESH

Linked to

France

Programme

Budget

50,000.00 €
© Thierry Lison De Loma

Description: The project aimed to mitigate agricultural impacts on coral reefs caused by erosion and sedimentation by introducing alternative cultivation substrates. Recent research findings indicating the benefits of compost and biochar in improving crop yields and soil carbon storage prompted the utilisation of invasive plant biomass for their production, showcasing their technical and economic viability. The project’s core activities involved inventorying invasive plant species, harvesting their biomass, creating compost and biochar, and testing diverse substrates to enhance agricultural yields and carbon sequestration. Through this initiative, 6 hectares of invasive species were repurposed, yielding 2.2 tons of biochar and 6 tons of compost. Notably, soil carbon content increased by an average of 975g C/m2 per cultivation cycle. Additionally, the project empowered 10 farmers through training sessions led by DAG technicians in biological agriculture techniques. Leveraging invasive species, this project effectively demonstrated the sustainable production of substrates, aiming to minimise coral reef harm from conventional farming practices.

Duration: 12 months

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