Alastair Sloss from Coagh near Cooktown has died after it is believed he fell into a slurry tank at his farm near Coagh, sometime between 5pm and 6pm on Friday.
The slurry ban in Northern Ireland came into place this weekend stopping farmers from spreading slurry.
Another Fermanagh farmer was overcome with fumes whilst mixing slurry on Tuesday afternoon making this the second slurry incident in the space of a few days
The 30-year-old Letterbreen man was taken to hospital, while five of his cows died in the incident.
A spokesman for the Health and Safety Executive said “The Health and Safety Executive can confirm it is investigating a fatal farm accident in the Coagh area. Our deepest sympathies are with the man’s family at this most difficult time.”
Local councillors and MLA’s have also paid tribute to Mr Sloss.
Ulster rugby player Nevin Spence, his brother Graham and father Noel lost their lives on their farm in September 2012