New calculator puts Irish grain emissions under scrutiny

Irish tillage farmers can now calculate the carbon footprint of their crops using AgNav Tillage, a free, voluntary decision-support tool designed for growers.

The calculator estimates greenhouse gas emissions per tonne of grain using farm information including fertiliser, lime, fuel, yield, soil type and straw management. It shows which practices contribute most to a crop’s footprint and where changes may have the greatest effect.

Signpost Tillage adviser John Mahon says accurate records are essential. Growers need details of inputs, field operations, yields, drying and straw management to build a farm-specific picture. They can review results with an adviser and consider changes that may improve both their footprint and profitability.

AgNav Tillage could also become part of food and drinks processors’ sustainability programmes that offer bonuses for lower-footprint grain. In animal feed, suitable Irish grain may support local growers and reduce associated emissions, but ingredients must meet nutritional needs and remain competitive. Buyers should compare them using consistent data rather than assume local crops always have a lower footprint.

Mahon says a measured footprint and traceable sourcing can support sustainability claims. Although using the tool may not bring an extra payment next harvest, it could improve market access, help secure preference over imports or strengthen relationships with buyers.