Abstract
Horticultural production is an increasingly important activity in Senegal that is mainly located in the Niayes region between Dakar and St Louis. However, the increasing use of pesticides and inorganic fertilizers has many implications for the environment. The recognition that conventional horticulture might have a negative impact on farmers and consumers health, and on the atmosphere through the emission of GHGs, has increased in recent years, leading some NGO’s to promote organic farming. Therefore, the rising level of environmental hazards from conventional farming system made it attractive to farmers in the Niayes to adopt sustainable agriculture practices based on organic farming. A whole farm model is used to compare the economic and environmental performances of the organic and conventional horticultural farming systems in the Niayes region in Senegal. The gross margin is regarded as the economic indicator, while carbon emissions are regarded as environmental indicators. The results indicate that the conventional farming system is still more attractive than the organic farming because the sale price is the same for both systems. There is no market for organic food in the region. Simulation results also reveal that there exists a “win-win” situation for conventional farmers when they partially adopt organic farmingsystem. However, environmental results in terms of carbon emissions reduction suggest that the organic system is more effective in mitigating climate change. Our study suggests that, through appropriate investment in agro-ecological research to improve organic management and the establishment of a local market for organic crops, organic farming can become a competitive alternative to conventional farming, when it comes to healthy food production with less environmental impact in the horticultural sector. However, further studies are needed on components of sustainable intensification to see which system of production is more profitable for farmers of the Niayes region, but also beneficial for the environment, and at regional and even national levels.
Highlights
The impact of agriculture on greenhouse gas emissions and climate change is important
The results indicate that the conventional farming system is still more attractive than the organic farming because the sale price is the same for both systems
Through appropriate investment in agro-ecological research to improve organic management and the establishment of a local market for organic crops, organic farming can become a competitive alternative to conventional farming, when it comes to healthy food production with less environmental impact in the horticultural sector
Summary
The impact of agriculture on greenhouse gas emissions and climate change is important. Agriculture is a cause and victim of climate change. Climate is one of the main determinants of agricultural productivity and climate change is expected to influence crop and livestock production [1]. The majority of households in developing countries depend on agriculture for their livelihoods and this dependency on agriculture make them more vulnerable to the effects of climate change [2]. Billions of people, those in developing countries, will face changes in rainfall patterns that will contribute to severe water shortages or flooding, and raising temperatures that will cause shift in crop growing seasons [3]. While there is a growing concern about the impact of climate changes on agriculture, another ongoing process in agriculture is its contribution to climate change
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