Leading scientist says agroecology is the only way to feed the world

Hans Herren, Ph.D. is an internationally recognized scientist specializing in sustainable agriculture. He is president of the Millennium Institute, a non-profit development research and service organization dedicated to sustainable development. Dr. Herren co-chaired the International Assessment of Agricultural Knowledge, Science & Technology (IAASTD), an initiative sponsored by the World Bank and United Nations in partnership with the World Health Organization that assessed global agriculture and recommended agroecological solutions to world hunger.

Dr. Herren has earned numerous awards that recognize his research achievements. These include the 2002 Brandenberger Preis for improving the living standards of Africa's rural population, the 2003 Tyler Prize for Environmental Achievement, and the 1995 World Food Prize for his work developing a successful biological control program that saved the African cassava crop, and averted Africa’s worst-ever food crisis.

Dr. Herren’s work in agroecology in Africa has been credited with saving millions of lives by enabling African people to produce the food they need. He developed the “push-pull” system that uses simple but powerful bio-control strategies to effectively manage corn pests, resulting in large increases in yields.


There is much discussion today about the need to “feed the world” because of the growing global population. What do you think needs to be done in order to ensure there is adequate food for everyone in the world?

HH: The issue is less on how to feed the world than how to nourish the poor and hungry. Today we produce 4600 calories per person per day, so there is enough food to feed twice the present population. The problem is that we produce mostly cheap commodities rather than quality food. These cheap products, in addition to being of low nutritional value, are based on a few crops that carry a large ecological, social, and economic footprint. What is needed is to support farmers in developing countries to grow their own healthy food by providing information, know-how, financial support for inputs, and support for them to access markets, among others.

Food security is achieved when availability, access, stability, and utilization are assured equally for all. There is also a need for new and participatory research into sustainable agricultural practices, based on the principles of agroecology and organic farming, which would free farmers from dependence on external inputs such as chemical pesticides and fertilizers.


Some agricultural “experts” are calling for another Green Revolution. What are your thoughts on this?

HH: What we need least is another Green Revolution. What is needed now is to move forward with the lessons learned from the Green Revolution, taking forward what has worked and leave behind most of it, since the Green Revolution has left agriculture dependent on external inputs that are non-sustainable and becoming more and more expensive since they are based on oil, a finite resource, and also synthetic fertilizers, also based on finite natural resources.

The way forward is to understand and work with the system in a holistic and integrated manner. Silver bullets, reductionism as often promoted by the agri-chemical industry are not solutions.

More at the link