Agricultural machine for spreading manure in cultivation land, has swirl plate with multiple turns, where each turn forms pitch, that is formed by single part, having blades separated by uneven zones obtained by folding part of plate
The machine has a tumbril to be fixed to a tractor, and a spreading bar disposed behind the tumbril. An endless metal swirl plate (3) having multiple turns (T) is rolled around a central tube (2) of the bar. Each turn forms a pitch (P) having blades (4) separated by uneven zones (5), where each pitch is formed by a single part. The zones are obtained by folding a part of the swirl plate.
