This study assesses changes over the past decade in the farm size distributions of Ghana, Kenya, Tanzania and Zambia. Among all farms below 100 hectares in size, the share of land on small-scale holdings under five hectares has declined except in Kenya. Medium-scale farms (defined here as farm holdings between five and 100 hectares) account for a rising share of total farmland, especially in the 10 to 100 hectare range where the number of these farms is growing especially rapidly. Medium-scale farms control roughly 20% of total farmland in Kenya, 32% in Ghana, 39% in Tanzania, and over 50% in Zambia. The rapid rise of medium-scale holdings in most cases reflects increased interest in land by urban-based professionals or influential rural people. About half of these farmers obtained their land later in life, financed by non-farm income. The rise of medium-scale farms is affecting the region in diverse ways that are difficult to generalize. Many such farms are a source of dynamism, technical change and commercialization of African agriculture. However, medium-scale land acquisitions may exacerbate land scarcity in rural areas, which could have important effects given the projected 60% increase in rural Africa's population between 2015 and 2050. Medium-scale farmers tend to dominate farm lobby groups and influence agricultural policies and public expenditures to agriculture in their favor. Nationally representative Demographic and Health Survey (DHS) data from six countries (Ghana, Kenya, Malawi, Rwanda, Tanzania and Zambia) show that urban households own 5% to 35% of total agricultural land and that this share is rising in all countries where DHS surveys were repeated. This suggests a new and hitherto unrecognized channel by which medium-scale farmers may be altering the strength and location of agricultural growth and employment multipliers between rural and urban areas. Given current trends, medium-scale farms are likely to soon become the dominant scale of farming in many African countries.

The Beta version of the Land Matrix (http://landportal.info/landmatrix) was launched in April 2012 as a tool to promote public participation in building a constantly evolving database on largescale land deals, and making the data visible and understandable. The aim of the Land Matrix partnership is to promote transparency and open data in decision-making over land and investment, as a step towards greater accountability. Since its launch, the Land Matrix has attracted a high degree of attention, and stirred some controversy. It provides valuable lessons on the challenges and benefits of promoting open data on practices that are often shrouded in secrecy. This paper critically examines the ongoing efforts by the Land Matrix partnership to build a public tool to promote greater transparency in decision-making over land and investment at a global level. It intends to provoke discussion of the extent to which such a tool can ultimately promote greater transparency and be a step towards greater accountability and improved decision-making. It will present the Land Matrix and its value addition, before detailing the challenges it encountered related to the measurement of the large-scale land acquisition phenomenon. It will then specify how it intends to address these issues in order to establish a dynamic and participatory tool for open development.The Land Matrix (LM) is a global, independent initiative for monitoring land deals. It is facilitated by a partnership of organizations 1 concerned by decision-making over largescale land deals, their implications for communities and the environment, and the fact that many directly affected stakeholders are currently excluded from such decisionmaking. The LM provides tools for widening citizen involvement in making data available and understandable, thus promoting transparency and accountability. It is ultimately an effort in improved decision-making over land resources and their use.

This study presents evidence of profound farm‐level transformation in parts of sub‐Saharan Africa, identifies major sources of dynamism in the sector, and proposes an updated typology of farms that reflects the evolving nature of African agriculture. Repeat waves of national survey data are used to examine changes in crop production and marketed output by farm size. Between the first and most recent surveys (generally covering 6 to 10 years), the share of national marketed crop output value accounted for by medium‐scale farms rose in Zambia from 23% to 42%, in Tanzania from 17% to 36%, and in Nigeria from 7% to 18%. The share of land under medium‐scale farms is not rising in densely populated countries such as Kenya, Uganda, and Rwanda, where land scarcity is impeding the pace of medium‐scale farm acquisitions. Medium‐scale farmers are a diverse group, reflecting distinct entry pathways into agriculture, encouraged by the rapid development of land rental, purchase, and long‐term lease markets. The rise of medium‐scale farms is affecting the region in diverse ways that are difficult to generalize. Findings indicate that these farms can be a dynamic driver of agricultural transformation but this does not reduce the importance of maintaining a clear commitment to supporting smallholder farms. Strengthening land tenure security of local rural people to maintain land rights and support productivity investments by smallholder households remains crucial.

According to portfolio managers, agriculture in general, and farmland in particular, can be considered an emerging asset class. Specialized financial vehicles, such as private equity and mutual funds, are emerging and competing to attract potential investment in this asset class. In recent years, there has been significant development of such vehicles targeting South Africa's farming sector. These innovations are led by a group of market intermediaries (e.g. asset managers or consultants) who endeavour to “re-shape” South African farmland as an opportunity for institutional investors. These “pioneers” engage in a multifaceted mediation process between global financial investors on one hand, and the South African agricultural sector on the other. Drawing upon an empirical study of such intermediaries in South Africa, this paper analyses the concrete mechanisms that facilitate this particular form of commodification. The paper presents and compares the intermediaries, giving particular attention to their structure, governance mechanisms and asset allocations within this “market in the making”. It describes how intermediaries develop different paths of asset valorization to unlock the “financial value” of South African farmlands (i.e. “liquifying”, standardizing, neutralizing, and depoliticizing agriculture as an asset). But, it also highlights some of the difficulties faced in the process of translating between international investors and local managers, questioning the “land-asset fiction” that is materializing through the subordination of farmland to the needs of financial society. (Résumé d'auteur