>>2270632It's a staple of German row crop tractors. These were developed in the 50s, mainly for weeding and sowing and were quite popular back in the day. It has a water cooled 2 cylinder Diesel engine producing some 20 hp and is also incredibly loud.
These are an example of neat, unique machines built in small factories for specialty use. The company still exists and although they don't build tractors anymore, they are a mainstay of planters, sprayers and hoes in Germany.