rule of thoumb/fungus models

[anthony]

can any of you guys share your knowedge on turf fungus outbreak.
and old golf course manager sharged with me the 150 rule.
if the max temp +the max humidity = 150 at night it is good conditions for dollor spot.

any of you guys here of this?
can you share yours?
anthony

[KirbysLawn]

Not sure about any rules, but I know what conditions make it favorable. Here when the night temps get >70 and we have high humidity or PM storms brown patch is a comin'.

[Turfdoctor]

If dollar spot is a problem, your N is too low. A slow, steady supply of N will reduce dollar spot dramatically. If you go too high on N , Mr. Brown patch is coming. If you got it bad, Banner Maxx it!!!!!!

[tremor]

Anthony,

The 150 rule is for Pythium.

Steve