By Bruno Barrionuevo Sarmiento (GeoSense)
When we think about the environmental impact of farming, what comes to mind?
Maybe tractors burning fuel, or fertilisers running off into rivers. But the truth is that the story is much bigger than that.
Every product we grow, harvest, and consume has an invisible web of environmental effects behind it: from the energy used to make fertilisers, to the plastic in irrigation pipes, to the packaging that keeps food fresh.
That’s why Life Cycle Assessment (LCA) is such a powerful tool for agriculture: it helps us see the whole picture, not just what’s happening in the field.
Modern agriculture feeds billions of people, but it’s also responsible for some of the largest environmental pressures on our planet in the form of water consumption, land use, soil degradation, water ecotoxicity, different forms of eutrophication, and greenhouse gas emissions.
The challenge is not just to produce more so as to feed a growing world population, but to produce smarter, with fewer resources, lower emissions, and healthier ecosystems. And that’s where LCA comes in.
LCA lets us trace every input and output involved in a farming system -from seed to harvest, from fertiliser production to waste disposal- and calculate its actual environmental footprint.
Instead of guessing, we can measure where the biggest impacts occur and where improvements make the most difference.
Seeing the Bigger Picture
Let’s take an example. Imagine two farmers growing the same crop: one uses a tractor for spraying pesticides, while the other uses a drone.
At first glance, the drone seems cleaner, since it relies on electricity and therefore doesn’t burn diesel.
When we take the whole life cycle into account, we start to see more details:
- The energy needed to manufacture the drone and its batteries
- The electricity used for charging,
- The mineral and fossil materials used for its sensors, batteries, and electronic components.
Only by taking into account and comparing all those aspects with the conventional method, LCA helps us understand the real environmental trade-offs.
It might confirm that drones are greener overall, or that in certain categories of impact, they have a higher footprint than their conventional alternative.
Drones and Smarter Farming
In the ICAERUS project, we’re applying LCA to five different drone-based applications:
- Crop health monitoring
- Crop spraying
- Livestock monitoring
- Forest health and fire-risk assessment
- Deliveries to remote rural areas
Each one replaces a more conventional practice, and each one changes the balance of energy use, emissions, and efficiency.
With LCA, we can see where drones genuinely help reduce environmental impact, and where innovation still needs a push to achieve more environmental sustainability.
Why This Matters
The insights from these assessments don’t just stay in scientific papers, but aim at helping farmers, engineers, and policymakers make better choices.
Knowing where resources are wasted or where pollution occurs allows us to design smarter technologies and fairer policies.
And for everyone else, it’s a reminder that sustainability is not about doing things “new” or “high tech” but doing them better, that is, with knowledge, care, and a view of the whole system.
Coming Next
In our next post, we’ll dive deeper into how we actually compare drones and conventional methods: what we measure, how we collect data, and how we make sure the comparison is fair.
Stay tuned, because the real magic of LCA happens when we start to see how every innovation, no matter how small, connects to the bigger picture of sustainability.
