I would guess that grandpa was not too good handling money , or he did not know how to run a farm . Eee iii eee iiii oooo , hear a piggie , there a piggie , or some thing like that . Maby he planted a weed crop with his other crop and got caught , it does happen .
P.s. The phrase bought the farm goes back to ww2 . A guy got killed in battle , the insurance would pay the blance owed on the farm . I dont think this has any thong to do with grandpa , but just wanted to include it .