I've only ever had Ladino clover in our food plots and the turkeys (&deer) seem to like it pretty well. A friend who has some land just down the road from our lease planted Chufa and said the trukeys absolutely wore that stuff out. He said that you would see every turkey that lived in the area, because once they figured out Chufa was there, they'd be around almost any time of day. Chufa doesn't like all types of soil and it is prohibitively expensive, but it is a turkey magnet. You'd also have to plant well in advance of turkey season so the nuts would have time to mature first.
Luck Counts, good or bad