Source : Webster's Revised Unabridged Dictionary (1913)

Cultivatable \Cul"ti*va`ta*ble\ (k?l"t?-v?`t?-b'l), a.
   Cultivable.

Source : WordNet®

cultivatable
     adj : (of farmland) capable of being farmed productively [syn: {arable},
            {cultivable}, {tillable}]