Use of Tithonia Compost (Tithonia diversifolia) as an Alternative Fertilizer in the Disaster-Prone Area of Bukik Batabuah

Abstract

This study aims to examine the effectiveness of Tithonia (Tithonia diversifolia) compost as an alternative fertilizer in the disaster-prone area of Nagari Bukik Batabuah, Canduang District, Agam Regency, West Sumatra. The method involved the production of Tithonia compost using locally available materials, with the addition of EM4 and molasses as bioactivators to accelerate the decomposition process. Results indicated that Tithonia compost contains high nutrient content, particularly nitrogen (2.7–3.59%), phosphorus (0.14–0.47%), and potassium (0.25–4.10%), which has the potential to reduce dependency on chemical fertilizers. The application of Tithonia compost improved soil structure, increased organic matter content, and enhanced soil porosity, thereby contributing to increased land resilience against erosion and landslides—the primary disaster threats in Bukik Batabuah. Economic analysis showed savings of approximately 50–75% compared to conventional chemical fertilizer costs. Implementation of this technology among farmers requires a participatory approach through the establishment of compost producer groups at the jorong (hamlet) level and support from various stakeholders. In conclusion, Tithonia compost represents an effective, economical, and sustainable organic fertilizer alternative that can support agricultural resilience in disaster-prone areas.