New figures from the Central Statistics Office show that the price of fertilisers jumped by more than 134% in February compared to the same time last year.
Fertiliser prices are up 7.5% on a monthly basis, the CSO said.
Most of those increases come before the impact of Russia's attack on Ukraine is seen. The two countries are major global suppliers of fertiliser, with Russia also a significant fuel supplier.
The CSO's latest Agricultural Price Indices also shows that energy and feed prices are up 33.3% and 19.3% respectively in February compared to February last year.
Today's CSO figures show that the monthly agricultural output and input price indices were both up by 2.9% from January to February.
On an annual basis, the agricultural output prices index is up 19.2% while the input price index is up 28.3%.
However, prices farmers are getting for produce in most sectors also improved in February.
Milk prices are up 28% in the year, cattle prices up 18% and poultry up 4.4%. Prices for pig meat fell by 7%.
The CSO's agricultural output price indices measure trends in the price of agricultural produce sold by farmers, while the agricultural input price indices measure trends in the prices paid by farmers for purchases of goods and service.
