Originally Posted by heritage
I agree with all but the part about snow mold. It's only from my experience though that when we have more fall rainfall here, more Potassium is lost and on the low end of sufficiency for healthy turf/roots/storage. Then I saw more snow mold issues as a result.
Penn State and Rutgers talked about 2/3rds of the annual Nitrogen to be applied in the 2 fall apps......1 lb when temps cool off and cool season grass is out of summer dormancy and sufficient available water, and then the late season application that was 1- 1.5 lbs N depending on the annual turf "total input". KB needs more than PR, Fescue or TTTF. You just did the math, and adjusted rate accordingly.
In the University studies about late season Nitrogen, I do not recall discussion of "test plots" Essential Macro nutrient levels of P,K,S in Low-Med and High ranges, and the different effects had on turf WITH the Late Season Nitrogen applications. I think in the "Test Plot" world (enough Ca,Mg,P,K,S) in a soil with good CEC and not too much water/leeching, just Late Season Nitrogen would not pose a snow mold issue.
Some Professors input(s) to our findings would be helpful in this thread.
What you are asking for, is to know everything at once... you want some one to give you the whole puzzle, already completed, only then
will you accept the information that was researched in part... research can only be done in part, becuz the more factors that interfere the greater the risk contaminating the data...
The details of the soil and the cause of snow mold can all be worked out later
once an understanding of the correct life processes of the plants are understood...
The following paragragh, is "The Professor" telling you about fall fertilizing strategy and what to expect, based on what they have found... When translated from OSU to CentoWisco, those stated months = Aug 15th for the first app(instead of waiting for Sept) and specifically before Oct. 15th(as opposed to the Oct., Nov., Dec. listed in the article)...
"... Turf fertilized in September and again during October, November, or December (northern, central and southern Ohio, respectively) is generally shown to possess better fall and winter color than a turf which was not fertilized at that time (1-4). In addition, signs of spring green-up have been shown to occur two to six weeks earlier if the turf has been fertilized during the previous fall. Most importantly, the enhanced rate of spring greening is realized without stimulating excessive shoot growth that accompanies the early spring nitrogen applications called for in most turf fertility programs. This can help homeowners and clients avoid the “spring mowing nightmares caused by very rapidly (easily resulting in the breaking of the 1/3 mowing rule). "
I don't know if they've actually used "Test Plots" per se , but it seems as though they had plenty of comparison plots...
The next logical move, once this paragragh is understood would be understanding WHY
these observations were observed...
Why,,, did the grass maintain Fall color with the second fall app???
Why,,, did the turf "Green Up" 2 weeks earlier in the Spring???
Why,,, did the grass green up, but not excessively grow
and Did this result change
IF,,, there was a "Winter App" applied as referenced in the opening of the article???
I want to commend you on following through as far as you have, in studying this article as far as it has gone... I think this is the first time that the contents of an article has ever been looked at this closely, in years... usually 'the Disrupter' has already come in and trashed real discussion, mocking the participants until they leave, to prevent going deeper into the understanding of what is being read...
Anyways, thanks for hanging in there, it is a pleasure chatting with you...