Authors: Andrea Basche, Marcia DeLonge | Published: March 15, 2017
The past several years have been rough for many U.S. farmers and ranchers. Net farm incomes this year could fall to 50 percent of 2013 levels in a fourth consecutive year of income declines that is leading some producers to seek alternatives. At the same time, rural and urban Americans share growing concerns related to agriculture: worries that water pollution will be increasingly costly and harmful, that water supplies are at risk from extreme swings in rainfall, and that global warming due to fossil fuel burning threatens our food system and will necessitate changes in how we farm.
What if all of these challenges could find a common solution? It might just be that they can. In a commentary published this week in the scientific journal Elementa, we contend that agroecology offers a promising approach to solving food system problems while mitigating, water and energy concerns — and propose a way to overcome the obstacles to fully embracing it.
U.S. agriculture has trended for several decades — as a result of policy, economics and other drivers — toward systems that are more simplified over both space and time. This has had adverse consequences for food, energy and water.
Agroecology takes a different approach, applying ecological concepts tocreate and maintain diverse, resilient food systems. Promising research demonstrates that bringing diversity back to farms can begin to reverse the problems simplification has created. For example, scientists have found that strategically incorporating perennial plants (including food, energy or non-crop plants) into small areas of commodity crops can significantly reduce water pollution and soil loss. Studies also show that using multiple crops rather than a monoculture is associated with improvements in the amount of carbon (important to help soils hold onto more water and mitigate climate change) and nitrogen (critical for plant growth and soil function) in the soil.