Pell Lime is going to be your only option. Get at co-op or many other sources (there's a good one online that ships to you- i could look it up if needed and get you address). Get PH, get phone # of Agronomist at your co-op, call him and tell him your PH, amount of acreage and he'll tell you rates. Probably going to need to re-apply every year or 2.