Private sector agricultural extension has expanded rapidly in many developing countries in the wake of drastic funding cuts made to public extension systems in the 1980s and 1990s. Motivated by the increase in sales or contract farming revenues that extension can generate, private providers include seed and input companies, distributors and dealers, service providers, food processors and retailers, and mobile phone companies. Mixed public-private systems are now becoming common. How well can the private sector fill the gap left by dysfunctional public systems?

To feed the world’s growing population, more food needs to be produced. In addition to cropland expansion, which faces a variety of constraints, increasing cropping intensity may provide a promising means of boosting global crop production. Yet information on the size and location of cropping intensity gaps—the difference between the maximum cropping intensity that is theoretically possible and the cropping intensity that is realized today—for current global croplands, and how much additional production can potentially be achieved by closing these gaps, is lacking.

Ethiopia’s agricultural sector has recorded remarkable rapid growth in the last decade. This paper documents aspects of this growth process. Over the last decade, there have been significant increases - more than a doubling - in the use of modern inputs, such as chemical fertilizers and improved seeds, explaining part of that growth. However, there was also significant land expansion, increased labor use, and Total Factor Productivity (TFP) growth, estimated at 2.3 percent per year.

"The dramatic rise and volatility of food prices over the last year have shaken the global food system. Governments and the international development community generally have responded to various aspects of the food crisis, but questions remain about whether the right actions are being pursued, how best to respond, and what the future holds.

In 2008, a year in which the global population—particularly the world’s poor—was confronted by both the financial and food-price crises, agricultural systems faced changes that led to market disruptions, reduced growth, mass protests, and a string of political efforts to reshape the design and governance of food systems.

El dramático aumento y la volatilidad de los precios de los alimentos durante el último año han sacudido al sistema alimentario mundial. Por lo general, tanto los gobiernos como la comunidad dedicada al desarrollo internacional han respondido ante diversos aspectos de la crisis alimentaria, pero todavía permanecen las preguntas sobre si se han tomado o no las acciones más adecuadas, cuál es la mejor forma de responder y qué nos aguarda en el futuro.

The report includes three essays about Responding to the World Food Crisis: Getting on the Right Track by Joachim von Braun, High Global Food Prices: The Challenges and Opportunities by Josette Sheeran, and Policy Implications of High Food Prices for Africa by Namanga Ngongi.

"African agriculture is at a crossroads. The current high food prices and the instability they have provoked in several countries have added impetus for African countries to review their agricultural policies and programs. New agricultural policies will have to be more focused on staple food crops and on their main producers-smallholders, most of whom are women. The new policies must remove constraints that impede access by smallholder farmers to the knowledge, technology, and financial services they need to increase farm productivity in a profitable and environmentally sustainable manner.

High food prices are not only causing a humanitarian crisis, but also putting at risk the development potential of millions of people. Global agriculture markets are undergoing structural changes, and the next three to four years will pose great challenges for achieving an affordable and accessible food supply for the world's most vulnerable. Soaring food and fuel prices are creating a "perfect storm" for the world's most vulnerable.

"Part of the difficulty in responding to the food crisis is the lack of credible and up-todate data on the impacts of food prices on poor people and on the effects of policy responses. Such information would allow international and national decision makers to use feedback to adjust their responses and achieve maximum effectiveness. Much more investment and sound coordination is needed in this area. So far, national and international responses to the food crisis are mixed in terms of their likely effectiveness.

Policymaking initiatives in agriculture and public health are often pursued in a parallel and unconnected fashion. Yet coherent, joint action in agriculture and health could have large potential benefits and substantially reduce risks for the poor. Among development professionals there is growing recognition that agriculture influences health, and health influences agriculture, and that both in turn have profound implications for poverty reduction.

"This paper describes the emergence of improved traditional planting pits (zaï) in Burkina Faso in the early 1980s as well as their advantages, disadvantages and impact. The zaï emerged in a context of recurrent droughts and frequent harvest failures, which triggered farmers to start improving this local practice. Despair triggered experimentation and innovation by farmers. These processes were supported and complemented by external intervention. Between 1985 and 2000 substantial public investment has taken place in soil and water conservation (SWC).