MAR 28, 2020 7:41 AM PDT

What's really important in organic agriculture

Agriculture takes up over a third of the land area around the globe. In the last several decades, the politicization of organic agriculture has become mainstream, with perspectives on both sides of the organic versus intensive agriculture becoming fierce. Recently, a study in Nature Communications claimed that organic agriculture is in fact worse for the climate because it ultimately uses more land to compensate for lower yields. The claim published in that study arrived at this conclusion by an analysis of the environmental impacts of agriculture and food through Life Cycle Assessment (LCA), the most common assessment method for such matters. However, in response to that study and the wide audience it received, a new study published in the journal Nature Sustainability argues that this perspective lacks the complexity of organic agriculture, and is thus unfounded.

This responding study comes from three researchers from France, Denmark, and Sweden who have taken it upon themselves to analyze the LCA system. They claim that the LCA method is overly simplistic and misses the benefits of organic farming.

"We are worried that LCA gives too narrow a picture, and we risk making bad decisions politically and socially. When comparing organic and intensive farming, there are wider effects that the current approach does not adequately consider," says Hayo van der Werf of the French National Institute of Agricultural Research.

The researchers say that LCA does not consider several key factors such as biodiversity, soil quality, pesticide impacts, and societal shifts.

"Our analysis shows that current LCA studies rarely factor in biodiversity, and consequently, they usually miss that wider benefit of organic agriculture," says Marie Trydeman Knudsen from Aarhus University, Denmark. "Earlier studies have already shown that organic fields support biodiversity levels approximately 30% higher than conventional fields."

Additionally, they are concerned that the LCA method concentrates primarily on product yields, evaluating environmental impacts per kilogram of product. This, they say, misses the bigger picture.

"LCA simply looks at the overall yields. Of course, from that perspective, it's true that intensive farming methods are indeed more effective. But this is not the whole story of the larger agroecosystem. A diverse landscape with smaller fields, hedgerows and a variety of crops gives other benefits -- greater biodiversity, for example," says Christel Cederberg of Chalmers University of Technology, Sweden.

Given the oversights in Life Cycle Assessment, the researchers are urging a revamping of the system. "Current LCA methodology and practice is simply not good enough to assess agroecological systems such as organic agriculture. It, therefore, needs to be improved and integrated with other environmental assessment tools to get a more balanced picture" says Cederberg.

Sources: Nature Sustainability, Science Daily

About the Author
  • Kathryn is a curious world-traveller interested in the intersection between nature, culture, history, and people. She has worked for environmental education non-profits and is a Spanish/English interpreter.
You May Also Like
DEC 03, 2020
Cannabis Sciences
Ozone Reacts with THC in Thirdhand Cannabis Smoke
DEC 03, 2020
Ozone Reacts with THC in Thirdhand Cannabis Smoke
Researchers from the University of Toronto have found that ozone, a component of outdoor and indoor air, reacts with tet ...
JAN 21, 2021
Plants & Animals
Western Monarch Migration Near Extinction
JAN 21, 2021
Western Monarch Migration Near Extinction
Earlier this week, the Xerces Society for Invertebrate Conservation reported that the western monarch butterfly populati ...
JAN 27, 2021
Earth & The Environment
How would nuclear war affect fisheries?
JAN 27, 2021
How would nuclear war affect fisheries?
New research published in the journal Communications Earth & Environment contemplates a post-apocalyptic world, ...
JAN 28, 2021
Earth & The Environment
Using supercomputers to predict the next massive earthquake
JAN 28, 2021
Using supercomputers to predict the next massive earthquake
A new prototype called RSQSim (Rate-State earthquake simulator) offers new insight into predicting massive earthquakes i ...
MAR 03, 2021
Earth & The Environment
Ginormous iceberg breaks off Antarctica ice sheet
MAR 03, 2021
Ginormous iceberg breaks off Antarctica ice sheet
According to observations from the British Antarctic Survey (BAS) at the Halley Research Station, a massive iceberg has ...
MAR 29, 2021
Earth & The Environment
Just discovered, already endangered
MAR 29, 2021
Just discovered, already endangered
Research published recently in Zootaxa details the finding of two species of screech owls that live in the Amazon and At ...
Loading Comments...