A £20m annual support package has been pledged for hill farmers if the Welsh Liberal Democrats form part of the next government, the party announced.
They promised to provide small-scale grants to farmers to enable them to diversify and reduce their carbon emissions.
And support for hill farmers worth £20m a year by introducing an 'Areas of Natural Constraint' scheme.
Party leader Kirsty Williams said: “Farmers in Wales produce some of the greatest produce in the world, but too often they are not getting the support they need.
"Every member state of the EU and each of the UK devolved administrations has some form of financial support for those who farm in difficult areas, all except here in Wales.
"The Welsh Liberal Democrats would end this unfair competitive disadvantage."
Elizabeth Evans, Assembly candidate for Ceredigion, said: “These are ambitious proposals that will support our farmers.
"Unlike Labour in Cardiff and the Tories in Westminster, we know what farmers need, having represented Welsh rural communities for over a hundred years. We recognise the struggle many face, with average farm business incomes being forecast to decrease by nearly 16%
"Labour and Plaid’s Glastir system has been a source of great confusion and frustration for many farmers.
"The Welsh Liberal Democrats will simplify the existing scheme and ensure that farmers receive payments on time.
"We would also look to offer more small scale, accession grants for farmers to invest in animal welfare, reducing carbon emissions, and more efficient IT so they can increase diversity and profitability.”
William Powell, Assembly candidate for Mid and West Wales, said: "More needs to be done to support and encourage young people to enter the farming industry.
"We will promote succession planning to combine the experience of the older generation with the energy of the younger generation.
"This will help drive business forward and encourage share farming to help young people get their foot on the farming ladder."
Also in the party’s agri manifesto, to be launched on a farm in Llanilar today, is a pledge to provide small-scale grants to farmers.
This would help them to diversify, cut carbon emissions and improve competitiveness, said Elizabeth Evans, Assembly candidate for Ceredigion.
The Welsh Conservatives also launched their bid for the rural vote with a pledge to create a cabinet post for rural Wales and a red meat charter.
Welsh Conservative leader and farmer Andrew RT Davies said: "Now – more than ever – Welsh rural communities need more support and empowerment.
"With the challenges they face at an all-time high, we want to see local people having a far bigger say in the decisions that affect them.
"As First Minister, I would give rural communities the opportunity to make decisions for themselves.
"We would listen to feedback and provide all possible support for a bright and vibrant future.
"Eighty five per cent of Wales is rural, one third of the Welsh population live in rural Wales and the rural economy is worth over £13bn.
"Welsh Conservatives would stand up for the farming industry and the rural communities around it.
"Assessing the impact of government policies shouldn’t be done by the same civil servants who draw it up.
"That responsibility should lie with the people who know best – rural communities themselves.
"From boosted promotion of Welsh food to a stronger voice in Cardiff Bay; these proposals provide a clear taster of a simple Welsh Conservative message: We are standing up for countryside communities and we will bring rural Wales in from the cold."
