In 2012, nearly 70% of the country suffered severe drought. USDA stated that much of the fertilizer farmers applied did not get used due to lack of rainfall. Just thought I'd mention this, cuz it tarted me thinking.
Does it always matter what type of fertilizer one applies? Maybe so. Maybe yes. Not sure really sure.
I never used to, but .... from now on, I will promote more core aeration (especially in the fall). During the past 2 or 3 years, most folks around here aerated lawns in August & September when we were still under drought conditions. Hard/dry soil - then only pulling out 1/2 inch plugs. But we always waited until we got rains to allow good plugs -- might be late October or even late November. I aerated my lawn in late November the past 2 years. Plenty of soil moisture, nice plugs, and even the weather was warm (just have to keep an eye on the forcast).
my 2 cents
A million people attended osama's inauguration & only 14 people missed work.