Agricultural carbon footprint

The agricultural carbon footprint is the total of greenhouse gas emissions associated with crop and livestock production. Unlike other sectors, where carbon dioxide from energy dominates, in agriculture other, more potent gases of biological origin play a decisive role.

It is a sector-specific variant of the carbon footprint, also expressed in CO2 equivalent so that gases with different warming power can be added into a single figure.

The three main sources

Agricultural emissions are split across three gases with different origins:

• Carbon dioxide (CO2): comes from energy use, machinery fuel, transport, drying and land-use change.
• Methane (CH4): produced mainly by enteric fermentation in ruminant livestock, manure and slurry management and flooded rice cultivation.
• Nitrous oxide (N2O): released mainly from the use of nitrogen fertilisers, both synthetic and organic, applied to soils.

Methane and nitrous oxide have a far higher global warming potential than CO2, so they weigh heavily on the result despite being emitted in smaller quantities. In fact, in agriculture methane and nitrous oxide usually explain most of the footprint, unlike in industry or energy.

How it is measured

The most complete way to quantify it is through life cycle assessment, which tracks emissions across the whole production process, from inputs (fertilisers, feed, energy) to the farm gate. The calculation combines activity data with specific emission factors for each process, crop or type of livestock, which requires granular and traceable information for the result to be reliable.

For the corporate inventory, the accounting reference is the GHG Protocol Land Sector and Removals Standard, whose implementation guidance was published in June 2026. It covers emissions from land management and land use change, CO2 removals, and biogenic product emissions across the supply chain.

Why it matters: food-sector scope 3

Agriculture is one of the largest sources of emissions globally. For the food and retail industry, most of their impact is not in their factories or stores but in the field, that is, in the scope 3 of their supply chain.

This makes the agricultural carbon footprint a key piece of any decarbonisation strategy in the food sector and a figure increasingly demanded by customers, investors and regulators, as well as a prerequisite for setting credible climate targets.

Relationship with water

Analysis of the agricultural carbon footprint usually goes hand in hand with the agricultural water footprint, since water and carbon are the two most decisive environmental vectors in food production and are often linked to each other.

Calculate your agricultural footprint with Manglai

Measuring agricultural scope 3 takes granular data and emission factors suited to each crop and farm. With Manglai's carbon footprint module you can calculate it with recognised methodologies and auditable results.