I do believe this to be MeliaMelia azedarach, also known as Chinaberry or Bead Tree. (Not to be confused with Azadirachta indica as so many Google images appear to portray).
A photo of flowers or fruits could help confirm.
http://blog.growingwithscience.com/2012/09/seed-of-the-week-chinaberry/
http://research.pomona.edu/bfs/2012/11/05/new-bfs-plant-melia-azedarach-chinaberry/
It is sometimes referred to as "Neem". Perhaps it was planted at the farm since the branches are commonly chewed as a natural oral antiseptic.