Cannot complete this Contract

[greenbelt]

Playing on Riverside Farms Map. Selected a plowing contract on Field 6, but it wont allow me to work the field. I am using a Kuhn DC 401 subsoiler which as far as I know can be used for plowing. So why is this not working? What have I overlooked?

[norfolk farmer]

I don't do contracts but have you tried using an actual plough as I seem to remember subsoilers even though they give a ploughed state are not recognised for contracts.

[TobiHH]

That is correct. Plough contracts can only be done with a plow.

[greenbelt]

Thanks guys. I was thinking that was what the problem was. It was very late at night and I decided I needed to go to sleep anyways.