Jerry Jeff Walker does a song by Bill Stains titled "Quiet Faith of Man". Not all about farming but there is a verse in it that captures a picture in ones mind. Goes like this:

A tractor makes its way along the fence line,
And drops the seeds precisely in a row.
If the rains are kind and the winds don't take the topsoil,
Before too long the crops will start to show.
The farmer sees the fields around him growin'
He wispers something low beneath his breath.
Perhaps a little prayer to help the growin'
Perhaps a word of thanks for all the rest.
Chorus
You trust the moon to move the mighty oceans,
You trust the sun to shine upon the land.
You take the little that you know,
And you do the best you can.
You see the rest with the quiet faith of man.

Beer