Prime Minister Theresa May said that the UK needed to get the right Brexit trade deal in order for farmers to continue to export their produce to Europe, she said while visiting a Welsh farm.
Mrs May was asked whether leaving the single market would damage farmers in Wales.
She told the BBC that people voted against free movement and jurisdiction of the European Court of Justice.
"What we have to do is ensure that we get the right trade deal so that farmers can continue to export their produce to the European Union but also so we can open up avenues to trade around the rest of the world for farmers as well," she said.
"Getting that comprehensive free trade deal is clearly in my plan for those Brexit negotiations, negotiations start in 11 days after polling day, less than a fortnight from now.
"We need a government that's ready to start those negotiations that have a clearly plan and that's me and the Conservative team."
But Liberal Democrat leader Tim Farron, who was also visiting a farm in Montgomeryshire, said the future for Welsh farming was 'up for grabs'.
"We have a UK government that has not shown a commitment for direct payments for farmers like this.
"I fear that the Conservatives are not going to protect those incomes, the Liberal Democrats definitely will."
