Niels Röling

The top 100 questions of importance to the future of global agriculture

Despite a significant growth in food production over the past half-century, one of the most important challenges facing society today is how to feed an expected population of some nine billion by the middle of the 20th century. To meet the expected demand for food without significant increases in prices, it has been estimated that we need to produce 70–100 per cent more food, in light of the growing impacts of climate change, concerns over energy security, regional dietary shifts and the Millennium Development target of halving world poverty and hunger by 2015. The goal for the agricultural sector is no longer simply to maximize productivity, but to optimize across a far more complex landscape of production, rural development, environmental, social justice and food consumption outcomes. However, there remain significant challenges to developing national and international policies that support the wide emergence of more sustainable forms of land use and efficient agricultural production. The lack of information flow between scientists, practitioners and policy makers is known to exacerbate the difficulties, despite increased emphasis upon evidence-based policy. In this paper, we seek to improve dialogue and understanding between agricultural research and policy by identifying the 100 most important questions for global agriculture. These have been compiled using a horizon-scanning approach with leading experts and representatives of major agricultural organizations worldwide. The aim is to use sound scientific evidence to inform decision making and guide policy makers in the future direction of agricultural research priorities and policy support. If addressed, we anticipate that these questions will have a significant impact on global agricultural practices worldwide, while improving the synergy between agricultural policy, practice and research. This research forms part of the UK Governments Foresight Global Food and Farming Futures project.

Linking science and farmers' innovative capacity: diagnostic studies from Ghana and Benin

The article is an introduction to a series of articles about diagnostic studies carried out by eight PhD students in Ghana and Benin. These studies form a prelude to their experimental action research with groups of farmers to develop technologies that work in local conditions and are acceptable to farmers. A last article reports on a comparison of these eight studies by the ninth PhD student in the Convergence of Sciences (CoS) project. In this introductory article, it is argued that the need to ground agricultural research in the needs and circumstances of farmers is as strong as the need to ground research in the international scientific discourse. It explores the reasons why the West African context requires careful diagnostic studies to be able to design agricultural research that is of any use. It introduces preanalytical choice as an overriding concept to explain why choices that reduce the degrees of freedom have to be made explicitly on the basis of criteria. Such criteria are suggested for the quality of preanalytical choices, and the paper ends by examining the way the CoS project made some of its choices

Farmers’ reasons for changing or not changing to more sustainable practices: An exploratory study of arable farming in the Netherlands

Abstract The paper describes the results of an exploratory study of farmers’ reasons for changing or not changing to more sustainable production methods in arable farming in the Netherlands. The background of the research is the disappointing adoption of Integrated Arable Farming Systems (iafs). Perceived production risk was expected to be an important factor constraining adoption. This study suggests, however, that perceived risk is not a satisfactory explanation. One reason is that iafs as it has become in Dutch practice cannot be easily distinguished from conventional arable farming systems. A continuum of gradual adoption of iafs methods, mainly for economic reasons, was observed. A real watershed difference was observed between partial adopters of iafs and organic farmers who used no chemicals at all. Secondly, dealing with production risks, such as weather‐dependent problems with weeds, pests and diseases, is considered part of professionalism of both conventional and iafs farmers and hence not a reason for avoiding a specific crop husbandry technique. However, uncertainties emanating from market conditions and environmental policy were found to be important considerations. JAgr Educ Ext (2001, 7, 3, pp 153–166)

Facing strategic narratives: In which we argue interactive effectiveness

The multiple commons is an important context in a world facing the eco-challenge. The platform for land use negotiation is a perspective concerning the good governance of the multiple commons. Platforms are devices or procedures for social learning and negotiation about effective collective action. They create collective decision making capacity at eco-system levels at which critical ecological services need to be managed. Taking platforms seriously as an option for designing a more sustainable society assumes a belief in the human capacity to engage in collective action. Unfortunately, human thinking about humans is dominated by perspectives that emphasize either technical solutions to given human ends, or perspectives that emphasize the selfish nature of human ends. This article focuses especially on the latter: the strategic narratives that have become dominant as society increasingly becomes designed on economic principles. The paper seeks to explain the dominance of strategic narratives and provides social science evidence for alternative perspectives. It concludes with cornerstones for an alternative narrative.

Weeds as agricultural constraint to farmers in Benin: results of a diagnostic study

Weeds are an emerging constraint on crop production, as a result of population pressure and more intensive use of cultivated land. A diagnostic study was carried out from June through August 2002 in the five agro-ecological zones of Benin (1) to identify the relative importance of weeds among major production constraints, (2) to better understand farmers’ perceptions of weed problems, and (3) to take cognizance of their reactions and the different actors involved in weed management technology development. The study also aimed at suggesting the development of weed management strategies that work and are acceptable under small-scale farmers’ conditions. Data were collected through semi-structured and unstructured group and/or individual interviews, and through participant observation, transect studies and weed identification during field visits. The results show considerable diversity in biophysical constraints and socio-economic conditions. Population density has led to high pressure on arable land, resulting in land degradation and weed problems. In all situations, pernicious ( Imperata cylindrica , Cyperus spp., Commelina spp.) and parasitic ( Striga spp.) weeds are difficult to eradicate, causing substantial food crop yield losses and threatening the livelihood of people. Land and labour shortage, low commodity prices and lack of credit were the main constraints hindering weed management. Causes, effects and consequences were analysed, taking into account the socio-economic context. The study’s findings with respect to weed management measures, and their adaptation and constraints in using them, suggest that effective and acceptable weed management strategies should be developed, taking into account both biological and social science perspectives with a focus on adding value to indigenous knowledge. Promising strategies for discovery learning about weed management were identified, in order to fostersustainable crop production in Benin.

From causes to reasons: the human dimension of agricultural sustainability

The point of departure of this paper is the familiar instrumental perspective that focuses on causes and effects and on actions to do something about them. This perspective is appealing and familiar and exemplified here by the Pressure, State, Response (PSR) Model used by the OECD to analyse environmental issues. After presenting the details of this approach, the paper then presents the other side of the coin: an approach based not on causes but on human reasons. In trying to explain sustainability, it does not look for causes and effects in the physical world, but for human reasons in terms of peoples ‘gets’, ‘wants’, ‘knowing’ and ‘doing’. This translates as an exercise in interpreting the perfectly valid instrumental discourse about agricultural sustainability into a totally different discourse based on cognition and learning. This translation seems to add something that is worth taking into account. The ‘pressure’ in OECDs PSR model takes on a new appearance. After providing examples on how the new perspective can be applied, the paper draws implications for the combination of the domains of knowledge we need to look at agricultural sustainability. It concludes with an example based on research of a social learning approach in a Dutch water catchment.

Facilitating the use of alternative capsid control methods towards sustainable production of organic cocoa in Ghana

Cocoa (Theobroma cacao L.) is an important foreign exchange earner for Ghana. However, production is constrained by a high incidence of pests and diseases. Based on farmers’ needs, this study focused on the control of capsids, mainly Sahlbergella singularis Haglund and Distantiella theobroma (Distant) (both Hemiptera: Miridae). Annual crop loss caused by capsids is estimated at 25-30%. To control capsids, formal research recommends application of synthetic insecticides four times between August and December. However, farmers hardly adopt this recommendation, which they consider unsuitable for their conditions and context. Three alternative control methods were tested with farmers: mass trapping, using sex pheromones; applying crude aqueous neem Azadirachta indica A. Juss. (Meliaceae) seed extract (ANSE) and using the predatory ant Oecophylla longinoda Latreille (Hymenoptera: Formicidae) as a biological control agent. Contrary to most previous reports, studies on temporal distribution of cocoa capsids indicated that the population peaked in March. ANSE was effective against capsids and other cocoa insect pests and did not affect the predatory ant. When O. longinoda occurred in high numbers, capsid incidence was low. Shade did not influence ant or capsid abundance significantly. ANSE caused 100% mortality of capsids in cage and 79-88% in field experiments. The sex pheromone was as effective as ANSE or ants in suppressing capsids. All the three methods were effective and compatible; hence, they can be used in an integrated pest management strategy for cocoa, including organic production in Ghana.

Converging farmers' and scientists' perspectives on researchable constraints on organic cocoa production in Ghana: results of a diagnostic study

A diagnostic study was conducted to identify the major constraints on organic cocoa production at Brong-Densuso and surrounding communities in the Suhum-Kraboa-Coaltar District, Eastern Region, Ghana. The study followed a technographic study that highlighted cocoa as a public crop requiring broad techno-social innovations. In the technographic study, problems identified included low yields, persistent pest management constraints and a low adoption rate of technologies developed by the Cocoa Research Institute of Ghana. The diagnostic study adopted a Participatory Learning and Action Research approach to set up and implement fieldwork with relevant stakeholders leading to problem identification, prioritization, and collective design of an action plan (research agenda). Cocoa farmers within the study area are conscious of the environmental problems associated with the use of inorganic pesticides and the high cost of using them. Hence, they produce cocoa without applying any pesticides. Quite recently, however, their association with an organic marketing company led to a search for non-chemical pest and disease control measures and for ways to certify their cocoa beans as organic. A misconception as to what species of cocoa pests constitute ‘capsids’ was settled between farmers and scientists using a cage experiment on capsid damage. The farmers became convinced that the Cocoa Mosquito (Helopeltis spp.) (Hemiptera: Miridae), which they had previously considered an important pest, was a capsid species that caused little or no damage to the beans inside the pods. After this clarification,

Institutional change towards sustainable agriculture in West Africa

This paper describes why inter- and trans-disciplinary research, accompanied by innovation platforms, is essential in the context of agricultural development in West Africa. The institutional context in West Africa can become a trap for smallholder farmers and for society at large. Therefore, we argue that an enabling institutional context is necessary to achieve an increase in agricultural production. This will have consequences for setting priorities of agricultural research and the way research should be organized in order to have impact. Within the framework of two consecutive programmes, attempts were made to create such an enabling context. The first programme, focusing on participatory technology development, showed that smallholders can capture only limited benefits from technologies because of their constrained opportunities. The point of departure for the second programme was that institutions explain a large portion of variance in agricultural output and that multi-stakeholder innovation platforms at local, district, and national levels are needed to create change. The paper concludes with an overview of this special issue, which provides nine case studies of institutional factors that influence smallholder innovation. Each of these case studies identifies and analyses institutional mechanisms at aggregation levels higher than the household, farm, or village.

Can convergence of agricultural sciences support innovation by resource-poor farmers in Africa? The cases of Benin and Ghana

The article introduces the IJAS special issue on the Convergence of Sciences (CoS) research programme that took place in Benin and Ghana between 2002 and 2006. CoS sought to develop pro-poor pathways of science. Starting initially from the assumption that science impact could be improved by developing farm technologies that are appropriate for the circumstances of resource-poor farmers, the nine researchers soon ran into the very limited windows of opportunity that the farmers face. Improving productivity at the farm level is thwarted by limited access to markets, infrastructure, inputs, credit and services, and by cheap imports. Farmers have no political clout, and agriculture is a source of rent for a host of actors including local and national governments. In these conditions, poverty reduction requires institutional change rather than participatory technology development. All nine researchers tried in their own way to deal with the institutional dimension. This special issue reports on these attempts. The introductory article provides background and context for understanding the institutional issues involved.