I am beginning to question when will fertilizer become cost inefective. We put it out right before it rains, look at the new growth the next day and go wow, that really worked. But have you ever seen how green and fast it grows with just rain and humid temps. We look like the middle of summer around here with the warmer temps and rainfall. I have not thrown fertilizer on my grazing pastures yet, but really how do you know it works as well as we have been trained to believe. I will fertilize my hay fields at the end of the month. But with every rainfall grass grows like crazy anyway. But we credit the fertilizer