Agriculture has to be kept at the top of the political agenda in the event of a No Deal Brexit.
That's according to the President of the Irish Farmers Association who met with Presidents of the Farmers Union in Northern Ireland and England.
Joe Healy, Ivor Ferguson and Minette Batters met on a dairy farm on the border near Newry this afternoon.
Joe Healy said while farmers in Ireland, Northern Ireland, England, Scotland and Wales may be in competition for various markets; they have similar production standards and costs of production.
"A no deal Brexit that might allow cheaper foreign imports into any of our countries could decimate agriculture for each of us", he said.
He said no deal could be "armageddon" for the Irish beef sector - considering that 50% (300,000 tonnes) of Irish beef last year went in to UK.
"It's our closest market, we know what the UK requires and we supply that but it won't be able to compete on shelves against cheaper foreign imports", he added.
While there are no tariffs from Southern Ireland to Northern Ireland, President of the Ulster Famers' Union Ivor Ferguson said in the event of no deal, Northern Irish farmers would face full World Trade Organisation tariffs into Southern Ireland.
He said the infrastructure on the border wouldn't matter because tariffs like 18p per litre, for which farmers currently receive around 25p, would simply mean the product "couldn't go over the border".
Minette Batters who is the President of the National Farmers Union in the UK said farmers across the UK, Ireland and Northern Ireland share a lot of the same interests and challenges.
She said the NFU works closely with the Ulster Farmers Union and the Irish Farmers Association under the Common Agriculture Policy.
Commenting on today's "fact finding mission", she said it was "interesting to see dynamics around the border when you can't see any border".