New figures from the Central Statistics Office show that the overall cost of agricultural inputs rose 37% in the 12 months to last September.
But the CSO noted that inflation on some items was much higher.
Fertiliser costs soared by 122%, while energy costs rose by 40%.
Animal feed was up 33% over the previous September, today's figures also show.
Meanwhile, prices paid to farmers for agricultural produce also rose in September.
Overall, the value to outputs rose 29% but the value of milk rose 49%, while grain prices increased by 47%.
Pig prices were up by 34% while eggs prices were 20.2% higher, the CSO added.