A new approach to farming is needed to safeguard human health and avoid rising air and water pollution, high greenhouse gas emissions and biodiversity loss, a group of 20 leading agronomists, health, nutrition and social scientists has concluded.

Rather than the giant feedlots used to rear animals or the uniform crop monocultures that now dominate farming worldwide, the solution is to diversify agriculture and re-orient it around ecological practices, says the report (pdf) by the International panel of experts on sustainable food systems (IPES-Food).

The benefits of a switch to a more ecologically oriented farming system would be seen in human and animal health, and improvements in soil and water quality, the report says.

The new group, which is co-chaired by Olivier De Schutter, former UN special rapporteur on food, and includes winners of the World Food prize and the heads of bio-science research groups, accepts that industrial agriculture and the global food system that has grown around it supplies large volumes of food to global markets.

But it argues that food supplies would not be greatly affected by a change to a more diverse farming system.

The group’s members, drawn from rich and poor countries with no affiliations to industry, say that industrial agriculture’s dependence on chemical fertilisers, pesticides and antibiotics to manage animals and agro-ecosystems, has led to ecological, social and human health crises.

“Today’s food and farming systems led systematically to negative outcomes and vulnerabilities. Many of these problems can be linked specifically to the industrial-scale feedlots and uniform crop monocultures that dominate agricultural landscapes, and rely on chemical fertilisers and pesticides as a means of managing agro-ecosystems,” the group says.

In place of an intensive global food system they propose that agriculture diversifies production and optimises biodiversity to build fertile, healthy agro-ecosystems and secure livelihoods.

De Schutter said: “Many of the problems in food systems are linked specifically to the uniformity at the heart of industrial agriculture, and its reliance on chemical fertilisers and pesticides.” He said that simply tweaking industrial agriculture will not provide long-term solutions and a fundamentally different model was needed.

“It is not a lack of evidence holding back the agro-ecological alternative. It is the mismatch between its huge potential to improve outcomes across food systems, and its much smaller potential to generate profits for agribusiness firms.”