Grass specific herbacides are very expensive. The hardest part about doing foodplots by hand is spreading enough lime and mixing it into the soil.

This link has two QDMA articles back to back. The second article is the best I' ve seen in the last 4 years on hand equiptment foodplots, check it out ...

http://members.tripod.com/~mmbqdm/ar.../foodplots.htm