I may try that idea with the alfafa. We had discussed it before but figured that just the heat would destroy it. I would agree on optimum ph level is no lower than 6.8 but the ceiling is around 7.6. It amazes me at the difference just in soil make up and our tracts aren't a mile apart. I suppose there is lot of silt over the years that has been deposited as a result of the small creek that runs through south tract. But the soil is sandy loam compared to clay, basically praire soil.