Greek farmers plan to paralyse the capital Athens with their tractors on Tuesday as they step up demands for more support from the state. The mobilization has already begun and tractors from more distant parts of the country are on their way, Greek media reported on Monday. The planned demonstration is the culmination of a wave of protests that has been going on for weeks and has seen farmers block key motorways in the country for hours at a time. The farmers’ associations are demanding lower fuel and fertilizer prices and lower electricity costs. Citizens’ Protection Minister Michalis Chrisoc…