• Energy Research

Climate variability and change threaten and impact negatively on biodiversity, agricultural sustainability, ecosystems, and economic and social structures – factors that are all vital for human resilience and wellbeing. To cope with these challenges, embracing sustainability in food production is therefore essential. Practising sustainable agriculture is one way of ensuring sustainability in pro-poor farming communities in low-income countries. Sustainable agricultural practices are those practices enabling farmers to meet current and future societal needs for food, fibre, ecosystem services and healthy lives. This study evaluates the dynamics of farm-level adoption of sustainable agriculture practices and their effects on maize productivity, crop income and food adequacy, using data from the Chinyanja Triangle in southern Africa. We apply joint estimation techniques to estimate consistently the impact of sustainable agriculture practices on maize productivity, crop income and food adequacy. We establishe...

Increased frequency of droughts (especially mid-season dry spells), higher than normal temperatures and altered patterns of precipitation and intensity are some of the extreme weather events evident in southern Africa. These extreme weather events present a threat to livelihoods and sustainability of agricultural production in the region. However, several climate-smart agricultural technologies (including drought-tolerant maize) believed to offer adaptation to climate variability in maize-based farming systems have been widely adopted. Moreover, empirical work on these technologies is limited. This paper demonstrates how by adopting drought-tolerant maize, a climate-smart agricultural technology impacts on the quantities of maize produced, sold and consumed in Zimbabwe. Using primary data on smallholder farmers collected in 2011 in Zimbabwe’s four districts, we employed propensity score matching techniques to construct a suitable comparison group and calculate the average treatment effect on the treated sample. We find that, the adoption of drought-tolerant maize (DTM) in rural Zimbabwe significantly enhances overall maize productivity and consequently the quantities set aside for sale and personal household consumption. Our study therefore suggests that, systematic expansion of climate-smart agricultural technologies such as adoption of drought-tolerant maize can significantly improve maize yields, sales and consumption in rural Zimbabwe. Our empirical results, robust to sensitivity checks, strongly point to the overall importance of DTM adoption in Zimbabwe. The findings from this paper also have very important implications for overall efforts on the promotion of climate-smart agriculture technologies in Africa and other developing countries.

Purpose The purpose of this study is to discuss how enhancing the role of local institutions (LI) and incorporating indigenous knowledge (IK) in climate change adaptation planning can improve adoption and scaling success of climate-smart agriculture innovations. Design/methodology/approach A review of relevant literature from sub-Saharan Africa was used to answer the study research questions. Findings Embracing IK and LI in climate change adaptation projects can enhance adoption and scaling success of climate-smart agriculture innovations in smallholder farming. Such efforts will improve: information gathering and dissemination, mobilization of resources, establishment of useful networks with relevant stakeholders, capacity building farmers on various fronts and provision of leadership in climate adaptation programs. Practical implications Fully embracing IK and LI can improve the scaling of climate-smart innovations only if development partners recognize IK systems that are to be transformed and build on them instead of trying to replace them. Also, participatory approaches in scaling innovations will enhance input from rural people in climate change adaptation programs. Originality/value Development interventions aimed at taking proven effective climate-smart innovations to scale must, therefore, engage local communities and their indigenous institutions as active stakeholders in designing, planning and implementation of their climate adaptation programs.

The ability of farmers to acquire inputs through purchase from available markets empowers them with the autonomy and capacity to diversify inputs, consequently enhancing the resilience of their cropping activities to various shocks. This paper investigates whether climate shocks, particularly rainfall shocks, influence commercial input purchase decisions by smallholder farmers in contrasting geographic regions in Malawi, with a particular emphasis on fertilizer, agrochemicals, seed, and labor. The empirical approach integrates historical weather information, climate shock perceptions with a longitudinal household survey data set to model commercial input purchasing decisions using appropriate latent variable models. The findings suggest that exposure to recent rainfall shocks, especially droughts, stimulates commercial input purchasing across regions, especially in drier central and southern regions of Malawi. This result holds true for general input purchase decisions and for specific inputs such as agrochemicals, fertilizer, seed, and labor. Although drought shocks considerably increase the probability of acquiring inputs through purchase, they occasionally diminish the intensity of purchases. Both objective and subjective measures of lagged rainfall shocks are revealed as significant determinants of commercial input purchases across regions in Malawi. In addition to regional heterogeneity findings, further analysis shows that the relatively wealthier, male-headed families and those with access to information are more likely to invest in purchased inputs in response to drought shocks. Scaling up policies that remove demand- and supply-side barriers to smallholder farmers’ access to commercial inputs from available markets is necessary for adaptation to rainfall shocks.

Conservation agriculture, drought tolerant maize, and improved legume varieties are key climate change management strategies for smallholder farmers in southern Africa. Their complementary efforts in adaptation to climate change are sternly important for farm productivity and income. This study evaluates factors explaining individual and multiple adoption of climate change management strategies and their differential impacts on productivity and income using a sample of 1172 smallholder farmers from Malawi and Zimbabwe. The study employs multinomial logistic regression to evaluate factors of individual and multiple adoption and regression adjustment with inverse probability weighting to evaluate impacts of the different adoption regimes on farm productivity and income. The results show that multiple adoption of innovations is mostly explained by access to key resources (credit, income and information), level of education and size of land owned by the farmer. More so, the concurrent adoption of conservation agriculture, stress adapted legume varieties and drought tolerant maize has far greater dividends on productivity and income than when considered individually. However, impacts of multiple adoption of the practices are not entirely uniform across different geographic regions and gender. Results suggest that effective institutional and policy efforts targeted towards reducing resource constraints that inhibit farmers' capacity to adopt complementary climate-smart agriculture packages such as conservation agriculture, drought tolerant maize and improved legume varieties must be gender sensitive and context specific.