ANALYSIS OF FACTORS INFLUENCING ON-FARM BIODIVERSITY AMONG MAIZE FARMERS IN ONDO STATE, NIGERIA

Background: On-farm biodiversity is essential for ecological resilience, food security, and the preservation of indigenous genetic resources. In Ondo State, Nigeria, maize is a primary staple crop, yet the diversity of varieties cultivated on individual farms is increasingly threatened by the drive for commercialization and the adoption of high-yielding monocultures. Objective: This study analyzed the factors influencing on-farm biodiversity—specifically cultivar richness—among maize farmers in Ondo State, Nigeria Methodology: A multi-stage sampling technique was employed to select maize farmers across the three senatorial districts of the state. Primary data were collected through structured questionnaires and focused group discussions. The data were analyzed using descriptive statistics, the Simpson Diversity Index to measure the level of biodiversity, and Poisson regression analysis (or Multiple Regression) to identify the socio-economic and institutional determinants of on-farm diversity Findings: Results indicated that a significant majority (approximately 76%) of maize farmers in the study area practice in situ conservation by cultivating more than one variety on their land. The analysis revealed that: Socio-economic Factors: Farm size, household size, and years of farming experience were positively and significantly correlated with higher levels of biodiversity. Institutional Factors: Access to extension services and membership in farmers' associations played dual roles; while extension services often promoted improved varieties (potentially reducing diversity), they also provided the technical knowledge necessary for managing multi-crop systems. Technological Factors: The number of agricultural technologies adopted and the level of information received regarding climate-resilient seeds significantly influenced the retention of traditional varieties.