Environmental Minister Christianne van der Wal called on farmers to accept the government's offer to discuss the issues of concern.

However, the LTO, the largest of the farmers' associations, is refusing to talk with government negotiators.

Other organisations have also declined to take part in discussions.

Late on Wednesday night, police and protesters clashed again.

In Blijswijk, near The Hague, police units dispelled a blockade of several supermarket warehouses and arrested 19 protesters.

About 200 farmers also protested with tractors outside the local administration buildings in Arnheim in the eastern Netherlands.

In other parts of the country, farmers burned haystacks near highways.

The protests are against government plans to curtail nitrogen emissions by 50 per cent by 2030.

This could spell the end for 30 per cent of livestock farmers, according to the government's own estimates.

Dutch Prime Minister Mark Rutte had appointed former minister Johan Remkes as a negotiator in the conflict.

However, Remkes was rejected by the farmers, who blame him for the nitrogen policy.

They are demanding fundamental changes to the plans.

Australian Associated Press