Abstract: An automatic soil sampler for taking samples of topsoil has a soil breakdown assembly that cuts a shallow furrow in the soil and moves debris to the side. Soil is collected with a sampling knife having a series of empty chambers adapted to receive samples of topsoil. A rotating discus is disposed opposite the soil sampling empty chambers for urging soil into the soil sampling empty chambers. A cup carrousel carries empty identified cups for receiving soil samples. A delivery assembly places one of the empty identified cup in a cup receiving station. A filling assembly connects the knife chambers carrying collected soil samples with the cup receiving station. The cups are filled with soil samples in a collecting station. Each filled cup has its identifier sent to memory along with the location at which the sample was taken.