Because Kilimanjaro and its economy are largely dependent on the smallholder-based agriculture sector, they are particularly vulnerable to the impacts of climate change. Approximately 90% of Tanzania’s population, as with the rest of Sub-Saharan Africa, is dependent on rain-fed crops for their food security. Climate change negatively impacts such crop production through rainfall variability and temperature shocks, threatening the livelihoods of farmers (Arslan, Belotti & Lipper, 2017; Moore et al., 2011).
Natural Extracts Industries (NEI) is working hard to address this. Our work firstly addresses deforestation through agroforestry. Because vanilla requires shade to grow, forest conservation is promoted throughout our network of farmers. This is vital, as cutting down forests releases the carbon stored within them into the atmosphere, a
process accounting for 17% of carbon emissions globally (Gorte & Sheikh, 2010). An estimated 500 to 750 tonnes of carbon are stored in each hectare of forest, with Tanzania losing approximately 400,000 hectares every year (Khatun et al., 2015; Komba & Muchapondwa, 2015). These emissions have drastically changed the local climate.
In order to help our farmers mitigate the effects of climate change on their vanilla and other crops, we have begun implementing several strategies, one of which is our rainwater harvesting project, funded by our partner organization MEDA. Farmers are selected for the program based on their level of water-stress, with priority given to our women farmers as well. They receive a rainwater harvesting tank and all required infrastructure installed at their farm free of charge. The size of the tank varies based on the number of vanilla vines each farmer grows.
After receiving tanks from NEI, farmers are trained both on how to use the tanks and on how to most effectively utilize the harvested water for their irrigation purposes. Each vanilla vine requires approximately one litre of water a week, which can be achieved by implementing a bottle-drip irrigation system. NEI has already installed 74 tanks to 74 farmer beneficiaries, and aims to reach a total of 200 tanks by the end of 2018. In addition, NEI is also repairing water furrows.
Mary Ulomi lives in the village of Uswaa in Kilimanjaro with her husband and five children. Her livelihood is solely dependant on agriculture. Using her extra income generated from growing vanilla with NEI, Mary was able both to send her children to school and invest in other economic activities such as maize cultivation.
In the past, however, Mary has struggled with drought at her farm. She has even lost vanilla plants, which dried up due to the lack of water. In order to address this issue, NEI installed a rainwater harvest tank at Mary’s farm in August, and provided her with training on how to use her tank. She is now utilizing bottle-drip irrigation for her vanilla as well. Since the installation of the tank, her plants have remained in good health and she hopes to achieve increased yields in the coming season.
Arslan, A., Belotti, F., & Lipper, L. (2017). Smallholder productivity and weather shocks: Adoption and impact of widely promoted agricultural practices in Tanzania. Food Policy, 69, 68-81. doi:10.1016/j.foodpol.2017.03.005 (http://www.sciencedirect.com/science/article/pii/S0306919217301872)
Gorte, R. W., & Sheikh, P. A. (2010). Deforestation and Climate Change. Congressional Research Service. (http://forestindustries.eu/sites/default/files/userfiles/1file/R41144.pdf)
Khatun, K., Gross-Camp, N., Corbera, E., Martin, A., Ball, S., & Massao, G. (2015). When Participatory Forest Management makes money: insights from Tanzania on governance, benefit sharing, and implications for REDD. Environment and Planning A, 47(10), 2097-2112. doi:10.1177/0308518×15595899 (http://journals.sagepub.com/doi/abs/10.1177/0308518X15595899)
Komba, C., & Muchapondwa, E. (2016). An analysis of factors affecting household willingness to participate in the REDD programme in Tanzania. Climate and Development, 1-14. doi:10.1080/17565529.2016.1145098 (https://www.researchgate.net/publication/296475511_An_analysis_of_factors_affecting_household_willingness_to_participate_in_the_REDD_programme_in_Tanzania)
Moore, N., Alagarswamy, G., Pijanowski, B., Thornton, P., Lofgren, B., Olson, J., . . . Qi, J. (2011). East African food security as influenced by future climate change and land use change at local to regional scales. Climatic Change, 110(3-4), 823-844. doi:10.1007/s10584-011-0116-7 (https://link.springer.com/article/10.1007/s10584-011-0116-7)