I have always heard that if there is one the that could be called a magnet for turkeys, its chufa. However the growningseason for us in the northern state is quite often not long enough for them to mature and have the tubers available for fall and winter.You may want to considerother thingsthat may not work as well but will still help. Early greening clover for spring, seed producing crops for summer and early fall, and mast producing shrubs the tend to hold fruits or nuts into winterand are available even with snow on the ground.