Assessment of the Effect of Soil Conservation Practices on Sustainable Crop Production in Ngororero, Rwanda
Azalie Bazambanza *
Department of Environmental Studies, Faculty of Environmental Studies, University of Lay Adventists of Kigali (UNILAK), P.O. Box 6392, Kigali, Rwanda.
Eric Sibomana
Department of Environmental Studies, Faculty of Environmental Studies, University of Lay Adventists of Kigali (UNILAK), P.O. Box 6392, Kigali, Rwanda.
*Author to whom correspondence should be addressed.
Abstract
Aims: This study assessed the effectiveness of soil conservation practices (SCPs) in controlling soil erosion and examined their contribution to sustainable crop production, using the Food Basket Sites (FoBaSi) programme of Ngororero District, Rwanda, as a case study.
Study Design: A cross-sectional, descriptive-explanatory research design combining quantitative and qualitative methods was adopted.
Place and Duration of Study: The study was conducted between 2025 and 2026 across 50 Food Basket Sites in the 13 sectors of Ngororero District, an East African highland agricultural landscape in Western Province, Rwanda.
Methodology: Cross-sectional mixed-methods was employed for the study of 367 farming households (Yamane's formula, stratified sampling) plus 39 key informants across Ngororero District. Data came from household surveys, field observations, interviews, and secondary records. Quantitative data were analyzed using descriptive statistics, correlation, and multiple regression in SPSS; qualitative data were analyzed thematically.
Results: Radical terracing (85%) and progressive terracing (78%) were the most widely adopted SCPs, whereas cover cropping (45%) and water harvesting (40%) showed relatively low adoption. Indicators of soil erosion remained prevalent, including bare soil patches (70%), rills (65%), and gullies (40%), suggesting inadequate maintenance and limited integration of biological conservation measures. Soil conservation practices were significantly and positively associated with crop yield, yield stability, land productivity, and household food security (p < 0.01). Multiple regression analysis showed that terracing, agroforestry, mulching, and cover cropping explained 68% of the variation in sustainable crop production (R = 0.825, R² = 0.680, Adjusted R² = 0.676; F (4,362) = 45.2, p < 0.001), with terracing (β = 0.45) and agroforestry (β = 0.35) being the strongest predictors. Furthermore, 80% of farmers reported increased and more stable crop yields, 65% reported higher farm income, and 74.1% perceived improved resilience to climate variability.
Conclusion: Integrated implementation of structural and biological soil conservation practices significantly enhances sustainable crop production despite persistent erosion challenges. Strengthening maintenance, expanding biological conservation measures, and improving extension support and financial access are essential to increase agricultural productivity and climate resilience in Rwanda's highland Food Basket Sites.
Keywords: Soil conservation practices, sustainable crop production, soil erosion, food basket sites, climate resilience.