Assessing the Impact of Organic Farming Practices on Tomato Yield and Quality in Green Valley Cooperative

Thesis Abstract

The increasing global demand for sustainable agricultural practices has prompted an urgent need to evaluate the efficacy of organic farming methods, particularly in the context of high-value crop production such as tomatoes. This study investigates the impact of organic farming practices on both yield and quality attributes of tomatoes within Green Valley Cooperative, a prominent community-based agricultural organization committed to sustainable development. The primary aim is to determine the extent to which organic inputs and management techniques influence crop productivity and nutritional quality, thereby informing best practices for smallholder farmers and cooperative stakeholders. Specific objectives include examining differences in tomato yield between organic and conventional practices, assessing qualitative attributes such as nutrient content and aesthetic quality, and identifying key organic practices associated with optimal outcomes. The research adopted a comparative cross-sectional design, targeting tomato farms operated under organic and conventional regimes within Green Valley Cooperative. The study population comprised 150 farmers actively engaged in tomato cultivation, from which a stratified random sample of 90 farmers was selected to represent both farming approaches equitably. Data collection involved structured questionnaires to gather quantitative data on farming practices, input types, and yield parameters, complemented by farm visits for physical measurement of tomato yield and quality assessment through laboratory analysis for nutrient content, including vitamin C and lycopene levels, utilizing high-performance liquid chromatography (HPLC). Qualitative data on farmer perceptions and experiential insights were obtained through semi-structured interviews, which were analyzed thematically. Data analysis employed statistical techniques such as descriptive statistics, independent samples t-tests, and analysis of variance (ANOVA) to compare yield and quality measures between groups. Multiple regression analysis was conducted to identify organic practice variables that significantly predict tomato yield and nutritional quality. The theoretical framework underpinning the study integrates the Diffusion of Innovations theory to understand adoption patterns of organic practices and the Sustainable Agriculture paradigm, emphasizing ecological balance and resource conservation. The anticipated findings suggest that organic farming practices significantly increase tomato nutritional quality, especially vitamin C and lycopene content, though effects on total yield may vary depending on specific methods employed. It is expected that organic management, characterized by composting, biological pest control, and crop rotation, positively correlates with both qualitative and quantitative outcomes compared to conventional methods. The study aims to contribute to existing knowledge by providing empirical evidence on the benefits and limitations of organic practices in smallholder tomato farming within a sub-Saharan African context. This research underscores the importance of targeted organic management techniques in enhancing crop quality without compromising yield, supporting the case for broader adoption among small-scale farmers. The main conclusion emphasizes that sustainable organic practices can improve tomato nutritional value and potentially increase market competitiveness. Based on these findings, recommendations include promoting farmer training on organic inputs, establishing organic certification schemes, and encouraging policy frameworks that support organic agriculture adoption. The study advocates for further longitudinal research to assess long-term impacts of organic farming on soil health and productivity, and the exploration of economic analyses to evaluate cost-effectiveness and market accessibility of organic tomatoes within local and export markets.