Ipil-Ipil (Leucaena Leucocephala): A Multipurpose Leguminous Tree For Agrobiodiversity Conservation And Climate-Resilient Farming

Leucaena leucocephala (ipil-ipil) is a fast-growing, multipurpose leguminous tree with significant potential for agrobiodiversity conservation and climate-resilient farming. This review synthesizes current knowledge on its ecological, agronomic, socioeconomic, and policy relevance. Botanically, Leucaena is a deep-rooted nitrogen-fixing species that thrives across diverse tropical soils and climates. Its multipurpose roles include provision of high-protein fodder, fuelwood, timber, green manure, and erosion control. Integration into agroforestry systems enhances soil fertility, carbon sequestration, and biodiversity by supporting pollinators, birds, and soil microorganisms. Climate-resilience benefits include drought tolerance, soil stabilization, microclimate regulation, and improved crop-livestock interactions. Socioeconomic contributions are evident in livestock productivity, reduced fertilizer dependency, and diversified income sources, although challenges such as mimosine toxicity, pest susceptibility, and invasive potential require careful management. Case studies from Latin America, Asia, and Africa demonstrate improved yields, milk production, and soil conservation under Leucaena-based silvopastoral and alley cropping systems. Policy frameworks such as Climate-Smart Agriculture (CSA) and Nepal’s National Biodiversity Strategy and Action Plan (NBSAP) provide opportunities for mainstreaming Leucaena into sustainable land management. Addressing knowledge gaps, strengthening extension services, and promoting community-based seed systems are essential for scaling adoption. With its ecological versatility and livelihood benefits, Leucaena leucocephala can serve as a model species for integrating biodiversity conservation with climate-resilient agriculture