### Sustainability in the Horticulture Sector in LNB  
The rhetoric and initiatives for improving environmental sustainability have been increasing in the Naivasha Basin area since the 1990s, with many cases of awareness campaigns for using organic fertilizer agroforestry [22; 28]. However, they highlight that this is not sufficient to significantly address the problem of widespread environmental stress in the basin [29]. Solar water pumps are commonly sold and promoted to farmers, with many microfinance organizations offering loans. Integrated pest management (IPM) has been in use in the floriculture sector and in largescale horticulture for several years [30]. [PERSON] and [PERSON] [22] noted that there is a significant number of commercial growers within the basin that are investing seriously in conservation measures on their farms, such as efficient water usage, recycling, and moving towards production on substrate instead of soil. Non-profit and institutional actors also applied innovations to contribute towards the sustainability of the horticulture sector in LNB. For instance, WWF-Kenya, in collaboration with other partners, piloted the programme Payment for Environmental Services project that applied the principle of sustainable land management by applying conservational farming to improve productivity while sustaining the delivery of environmental services [22]. The Lake Naivasha stakeholder organization (Imarisha) mobilizes and coordinates multi-stakeholder efforts on a range of sustainability issues within the basin [22]. Despite the various efforts and interventions, the uptake of SCP practices, particularly by horticultural MSMEs in LNB, is still very low and faced a number of social, economic, and environmental challenges. Social challenges include limited SCP know-how, skills and awareness of the horticultural MSMEs [29], weak relations among key stakeholders in the FFV supply chain [4; 31; 32], and rapid population growth that exerts pressure on land and other natural resources [22; 29]. Limited access to reliable markets and access to finance are the most persistent economic challenges [26], as well as low demand for high-quality, sustainable products, limited access to market information [29], inadequate knowledge on and access to processing techniques, limited access to equipment, machinery, and infrastructure due to the costly investments, and the fragmented structure of markets, including formal and informal [33]. Environmental challenges include a high increase in demand for the hitherto scarce environmental resources and services (particularly Lake Naivasha), water and soil pollution [34], rain shortages and unpredictability, and increasingly mild highland temperatures that increase the spread of agricultural pests [29]. Other challenges include overreliance on rainfed agriculture, poor road conditions, inadequate cooling facilities [28] and inadequate policies and regulations that foster a more sustainable horticulture sector. Research about SCP practices by MSMEs in the horticultural sector in developing countries is still scarce. One of the few research papers addressing the general topic of SCP and developing countries is that of [PERSON] et al. [35], who conducted a comparative analysis of SCP practices in developed and developing countries based on a vast literature review [35]. They pointed out that MSMEs are less favoured and have received little attention on the subject of SCP implementation compared to large enterprises in both developing and developed countries [35]. In the study, [PERSON] et al. [36] indicate that multiple uses of climate-smart agriculture (CSA) strategies by farmers in SSA is mainly explained by the availability of key resources such as credit, income, and information, as well as farmers' education level and land ownership size. [PERSON] et al. [37] identified demographic factors such as age, gender, and education as factors and drivers influencing the adoption of multiple sustainable agricultural practices (SAPs).