we are all pretty smart here, but I'll toss this in just in case....... when we talk fert, I see folks using tripple 19, 46 0 0........ when it all comes down to it, we should keep in mind the content of what we are using, those numbers mean something, and it is easy to forget and just go at a bags per acre, but in reality, there is a big difference. lets say you have 20 20 20, and want 40 lbs of N per acre..... it is way to easy to grab 2 50 lb bags and think you are doing it right. but that is only half of what you are trying to apply, 100 lbs of 20 20 20 only adds 20 lbs N to the plot, you would need 4 bags. if I am babbling, let me know, otherwise, just trying to help.