Liberal Democrat rural spokesperson Baroness Kate Parminter has said the Conservatives have let down farmers who have failed to guarantee to replace EU subsidies for the long term.
Visiting Cornwall for the election campaign, she said rural communities have been 'taken for granted'.
"We need a new reformed system for agricultural support for farmers to ensure British farming remains competitive and doesn't lose out after Brexit," she said.
"We also need to encourage new and younger people to come into farming by championing different forms of ownership including longer tenancies, share farming and community ownership.
"Our rural communities have been taken for granted by the Conservatives and their needs ignored.
"We would invest £2bn to ensure the provision of universal high speed broadband, and work with Ofcom to ensure that mobile phone companies provide fast and reliable coverage in rural areas."
'Not a penny less'
Defra secretary Andrea Leadsom said the Conservatives have committed to the same funding levels as CAP.
She said: "If elected on June 8, Theresa May’s Conservatives will commit to the same spending on farming and food production over the next Parliament as is now provided by the EU’s Common Agriculture Policy.
"As we translate the body of European law into our domestic regulations, it means that the rules around the environment, food and farming will be set in the UK."
A Welsh Labour candidate for Brecon and Radnor constituency said he would 'chain himself' to the rails of Westminster if funding was cut.
"We have got to keep farmers in business because the rural economy is reliant on farming," he said.
"The starting point for negotiations should be not a penny less.
"Wales needs special treatment and if that is not forthcoming I would chain myself to the railings of Westminster.
"Every £1 farmers spend in the local economy is worth £7 to the wider community."
