Nectarine tree named 'Smooth Texan Two'

Disclosed is a new variety of Prunus persica named 'Smooth Texan Two'. This new variety, which requires approximately 600 chilling units of dormancy, is considered to be a nectarine tree of early season maturity, which ripens in mid to late May in the medium chill zone of Texas and produces yellow fleshed fruit that are firm, attractively colored, and suitable for both local and regional markets.U