Why did farmers stop cultivating NERICA upland rice varieties in central Benin?

New Rice for Africa (NERICA) was developed by the Africa Rice Center by crossing high-yielding Asian rice (Oryza sativa L.) with locally adapted African rice (Oryza glaberrima Steud.). Community-based seed production of NERICA varieties was introduced in a village in central Benin in 2006 through seed dissemination projects. It was reported that high-adoption rates of these varieties were mainly due to high demand by development projects for seed dissemination, and to incentives (i.e. selling the rice seed at a higher than local market price to a local extension service) for farmers to grow NERICA varieties. A follow-up survey was undertaken after the seed dissemination projects ended to examine the change in the cultivation of NERICA varieties. About half of the farmers had ceased cultivation of NERICA varieties in 2011. The reasons for abandonment were the combined effects of reduced seed demand and low yields, which were attributed to a lack of access to credit and training on NERICA cultivation practices. The majority of the farmers did not abandon rice cultivation, but grew other high-yielding varieties, including one aromatic variety for which there was market demand. We conclude that to avoid immediate reductions in the adoption of new varieties after projects are terminated and to enhance agricultural sustainability, the varieties should be introduced in conjunction with appropriate group training on their cultivation, and the project should target farmers who do not have off-farm businesses. Furthermore, access to credit should also be enhanced, and the marketability of the varieties should be assessed.     

Institutions and agricultural productivity in Sub-Saharan Africa

Agricultural productivity in 41 Sub-Saharan Africa (SSA) countries from 1960 to 1999 is examined by estimating a semi-nonparametric Fourier production frontier. Over the four decades the estimated rate of productivity change was 0.83% per year, although the average rate from 1985 to 1999 was a strong 1.90% per year. Former UK colonies exhibited significantly higher productivity gains than others, while Liberia and countries that had been colonies of Portugal or Belgium exhibited net reductions in productivity. We measure a significant reduction in productivity during political conflicts and wars, and a significant increase in productivity among those countries with higher levels of political rights and civil liberties.     

Does Conservation Agriculture Change Labour Requirements? Evidence of Sustainable Intensification in Sub-Saharan Africa

Population growth, increasing wealth and changing diets require agriculture in Sub-Saharan Africa to intensify to meet future food demand and ensure food security in the region. Conservation agriculture can increase yields in the long run and reduce the negative environmental impacts of intensive farming. In changing the mix of resources used and how they are managed, the adoption of conservation agriculture can have a direct impact on farm labour. We study the relationship between conservation agriculture and labour input requirements as observed in five Sub-Saharan African countries. We focus on the amount of work required and the source of the work employed (household or hired, by gender, by children and by production stage). We apply multinomial endogenous switching regression models on a panel of household and farm data from Ethiopia, Kenya, Malawi, Mozambique and Tanzania. We find that conservation agriculture increases farms’ labour input requirements. Higher demand is driven by more work during the harvesting and threshing stages. Increases in labour requirements are usually met by household labour, not paid work. The workload change is also higher for women than for men, and, in certain cases, is met by children.     

Stories of Rural Accumulation in Africa: Trajectories and Transitions among Rural Capitalists in Senegal

This paper analyzes primary qualitative evidence from life histories of rural capitalists in contemporary Senegal. Various common themes in the declining literature on rural capitalism in Africa are discussed with reference to the specific individual trajectories of rural farm capitalists in Senegal. The themes include the emergence of rural capitalism in the context of protracted, uneven and gradual rural social differentiation and the various processes that have accompanied it; the condition of 'entrepreneurship' in such changing historical contexts; the symbiotic relationship between different spaces (loci) of accumulation, especially trade, transport and farming and the historical context in which they take place; the crucial but sometimes contradictory role of the state in spurring or constraining rural capitalist accumulation; and the variety of 'idioms of accumulation', which reflect transitions and synthesis between non-capitalist and capitalist forms of labour surplus appropriation at the level of individual capitalists, despite some uniformity in the general logic of capital and the spread of capitalist relations of production and exchange. The paper also discusses the methodological power and limitations of oral narratives as a method to gather evidence on long-term processes of agrarian change and accumulation in rural Africa. Finally, the life histories shed some light on the origins of rural capitalists and show that there is a combination of instances of 'capitalism from above' and 'from below' but that no dominant pattern can be clearly discerned at least in the space of one or two generations.     

Agricultural land-use change during economic reforms in Ghana

Land-use change is driven by many interrelated factors including national policies formulated in response to the forces of globalization. This study integrates remote sensing data with social surveys to identify the role of demographic, technology and market-related variables in cropland expansion during economic reforms in Ghana. Macroeconomic changes increased the commercial orientation of farming as the sources of food supply changed from import to domestic production. However interest rates liberalization increased the use of labor at the expense of fertilizer and other complementary inputs. Demographic variables were more important in explaining cropland change after structural adjustment. Public agricultural support services are required for sustainable market-induced agricultural change in Ghana.     

Research and Development Towards Sustainable Agriculture by Resource-Poor Farmers in Sub-Saharan Africa: Some Strategic and Organisational Considerations in Linking Farmer Practical Needs with Policies and Scientific Theories

Sustainable agricultural development is presented as a diverse and dynamic process through which it copes with agro-ecological and socio-economic diversity at field level and with ever-changing needs and opportunities of (smallholder) farmers. In support, agricultural research—aimed at locally appropriate and environmentally friendly technologies—should contribute to bridging the currently increasing gaps between scientific theories and government agricultural policies as opposed to the practical field realities that farmers are facing.

These gaps are best illustrated by—what in the West is often presumed to be—a stagnant African agricultural (in reality it is not!) in spite of many ambitious policies and projects by national governments and international donors for several decades. Disappointing adoption rates by resource-poor smallholders of the proposed ‘modern’ agricultural technologies have often been blamed. However, the actual local systems are primarily based on ‘ecological’ and ‘organic’ concepts. Localised intensification through recycling of organic by-products is an integral part of such systems. Consequently, these systems are uniquely adapted to the diverse framer needs resulting from widespread variations in soil, climate and socio-economic conditions. By contrast most international R&D support for the African agricultural sector is aimed implicitly at creating a modern conventional system of farming based on external inputs and along a Western industrial model.

To cope with diverse and complex, location specific problems inherent in development, sustainability and poverty alleviation, requires strong national research and development (R&D) institutions that adopt comprehensive, people-centred approaches as opposed to the technocratic nature of most formal international development assistance. The development debate therefore should be turned around. The ‘existing’ smallholder farming systems and their needs should be a point of departure, while the various development initiatives and policies should be handled by including the related institutional aspects.     

秦皇岛市第四方物流发展前景研究

秦皇岛市是国务院1984年认定的全国首批14个沿海开放城市之一,其交通条件和地理位置对物流业的发展十分优越。河北省"十一五规划"也将秦皇岛列为十大物流基地,但就其优质的物流资源而言,我们关注这个城市能否加速超车、将物流变成经济强劲增长的引擎之一?本文从这个角度探讨了秦皇岛能否在河北省率先发展第四方物流(简称4PL),以使物流成为支柱产业。本文讨论了秦皇岛发展4PL的基础条件、必要性、具体举措,研究内容对于其他城市也具有一定的参考价值。