Farm costs rose by 0.3% in March and now stand 5.2% higher than last year, according to the latest figures from the Central Statistics Office (CSO).
Meanwhile, prices paid to farmers fell by 0.3% that month and are now 0.7% lower than a year ago, further shrinking the space available to make a margin.
Jump in diesel price
Diesel was one of the the fastest rising costs, jumping by 2.6% in March compared with the previous month.
The price of seed, too, was hiked by 9.2% in one month.
Fertiliser and feed prices were back marginally, but remained stubbornly high.
Fertilisers were 0.5% cheaper than in February, but still 7.9% dearer than last year.
Similarly, feed prices reduced by just 0.1% during March, but remained 9.4% higher than a year ago.
Sheep prices now stand 12.4% lower than last year and cattle 9% lower, with no improvement in March.
Pigs were the only stock seeing a price improvement that month, up 2.3%.
Milk prices were down 1.1% during the month, ending up 3.5% lower than last year.
'Dairy farms running faster to stand still without a rise in milk price'
Market alone not enough for beef production