Irrigation Nutrition Linkages Evidence From Northern Ghana

We analyze the linkages between irrigation and nutrition using data from irrigators and non-irrigators in Northern Ghana. The results show that (i) there is a modest difference in the overall household dietary diversity score between irrigators and non-irrigators, (ii) there are significant differences in the consumption of animal source foods between irrigators and non-irrigators, (iii) there are significant differences in the consumption of fruits and vegetables as well as sugar and honey between irrigators and non-irrigators, and (iv) the sources of food consumption differ between irrigators and non-irrigators. The analysis shows strong association between households’ nutritional status and their access to irrigation, with evidences suggesting that the irrigation-nutrition linkages play out both through the income and production pathways in Northern Ghana.

The evidence on the potential for agricultural interventions to contribute to improved nutrition has grown considerably over the past decade (Ruel et al., 2018). Numerous studies have explored both positive and negative effects of agriculture on nutrition and health (Ruel and Alderman, 2013; Herforth and Harris, 2014; Masset et al., 2012; Hoddinott, 2012). However, as an important and growing component of agriculture, smallscale irrigation has not yet been given the attention it deserves. The Innovation Laboratory for Small Scale Irrigation (ILSSI) set out, among others, to fill the evidence gap on irrigation-nutrition linkages. Domènech (2015) describes several potential pathways through which irrigation can influence food security, nutrition, and health outcomes, including 1) a production pathway, 2) an income pathway, 3) a water supply pathway, and 4) a women’s empowerment pathway. To illustrate these pathways, we adapted the agriculturenutrition framework of Herforth and Harris (2014) to include irrigation (Figure 1), while also noting a fifth, negative pathway that links irrigation to water pollution and disease via the application of fertilizers and pesticides and via supporting vector-borne diseases, such as malaria or schistosomiasis, respectively (Passarelli et al., 2018).

Women’s empowerment is important to improve the status of women and achieve greater gender equity. It is also an important vehicle for achieving other development goals related to food security, nutrition, health, and economic growth. Increasingly, researchers seek ways to measure women’s empowerment, trace the pathways through which women’s empowerment is achieved, and provide guidance for policymakers and practitioners aiming to facilitate women’s empowerment through their interventions. This paper explores local perceptions of empowerment in the Upper East Region of Ghana in the context of a small-scale irrigation intervention targeted to men and women farmers. Using data collected through qualitative interviews and focus groups, the paper traces the linkages between small-scale irrigation and aspects of women’s empowerment, identified as important to men and women farmers themselves. The relationship between the components of empowerment and small-scale irrigation are placed within a larger context of social change underlying these relationships. Finally, this paper explores the ways that the introduction of modern technologies for small-scale irrigation may contribute to women’s empowerment.

Irrigated agriculture can support food and nutrition security, increase rural employment and incomes and can act as a buffer against growing climate variability and change. However, irrigation development has been slow in Africa south of the Sahara and Ghana is no exception. Out of a total potential irrigated area of close to 2 million ha, less than 20,000 ha large-scale irrigation and less than 200,000 ha of small-scale irrigation have been developed; but the latter is only an estimate. To identify entry points for accelerating small-scale irrigation development in Ghana, a national and a regional stakeholder Net-Map workshop were held in Accra and Tamale, respectively. The workshops suggest that a wide variety of actors from government, the private sector, international organizations and funders, research organizations and NGOs are involved in the diffusion of small-scale irrigation technologies. However, there are important differences between actors perceived to be key at the national and at the regional levels in northern Ghana. At the national level, diffusion of small-scale irrigation technologies is considered to be largely influenced by the Ghana Irrigation Development Authority together with a series of private sector actors focused on importation, distribution and financing of technologies. Farmers are considered to have no influence over the diffusion of small-scale irrigation, suggesting that small-scale irrigation is largely considered a supply-driven process. In northern Ghana, on the other hand, farmers are considered to be key influencers, although participants noted that much of this was potential influence, together with a larger and more diversified set of government stakeholders that are seen as regulators and possibly gatekeepers. For irrigation diffusion to successfully move from importation to distribution to benefiting smallholder farmers, all of these actors have to come together to better understand farmers’ needs and challenges. A multi-stakeholder platform could help to increase communication between farmers as the ultimate beneficiaries of small-scale irrigation technologies and the many other actors interested in supporting this process.

Agriculture in Africa south of the Sahara (SSA) is still largely rainfed. SSA also exhibits the lowest crop yields for major staples in the world, largely due to low use of irrigation and fertilizer. Rainfed agriculture poses growing production risks with increased climate variability and change. At the same time, smallholder irrigation in the region developed rapidly over the past decade, albeit starting from very low levels. In addition to largely demand-driven irrigation development by smallholders, there is a significant push by donors for large-scale irrigation development, as well as some push for smallholder irrigation. There has also been a long-standing debate about whether irrigation in SSA should be large scale or small scale to achieve its potential. However, given the potentially high rewards, but also high possibility of failure, the assessment of irrigation potential must go beyond large scale versus small scale to integrate concerns regarding environmental sustainability, resource use efficiency, nutrition and health impacts, and women’s empowerment. The hypothesis underlying this review paper is that how irrigation gets deployed in SSA will be decisive not only for environmental sustainability (such as deciding remaining forest cover in the region) and poverty reduction, but also for health, nutrition, and gender outcomes in the region. The focus of this paper is on the health, nutrition, and gender linkage. We find that to date, few studies have analyzed the impact of irrigation interventions on nutrition, health, and women’s empowerment, despite the large potential of irrigation to affect these important variables. Irrigation interventions may have differential effects on different members in the household and in the community, such as irrigators, non-irrigators, children, and women. Measuring and understanding such differences, followed by improving design and implementation to maximize gender, health, and nutrition outcomes, could transform irrigation programs from focusing solely on increased food production toward becoming an integral component of poverty-reduction strategies.

Conceptual framework for agriculture/nutrition linkages; Investment in agricultural research; Modernization and technological change in agriculture; Time allocation, nurturing behavior, and income-control linkages; Nutrition as an input into agriculture.