Here is the Old pic taken 9 days Ago......

Could be both. Even the darker green areas from 9 days ago look better now.

One ? would a fungus Clear up That fast in 9 days??? Thanks in Advance ;)

Thank you it's getting better so it seems

How I hate being wrong, or more importantly giving inaccurate information.

Thanks Lisa-marie for making me do my homework. I went back through my "library" and found a number of pertinent articles. I just wish I had a better memory.

That type of leaf discoloration is not a usual trait of an N deficiency.

1. That isn't very clear as although I intended to be referencing the lesions, "discoloration" could certainly be interpreted as "light green" coloration.

2. Your issue could have been N based. Although the consenus seems to be that it takes weeks to balance the soil to correct. I still think your problem was a disease but it IS possible that it could have been ammonium N toxicity.

See here for one of the more "readable" explanations.

See here for an article referencing a PACE study finding ammonium to nitrate levels at which turf damage is likely.

Sorry all.

P.S, this information may be significant in establishing a lawn and for winterizing.

Ok Now I am Lost Lol Ammonium Toxicity? it was DRUNK??? Lol ;) ha ha Idk what the heck that means, I know my basic lawn stuff, can you break that down in layman terms :)

I do not have a science background, so here is a layman's explanation in my own layman's terms.

Plants only use N in two forms: ammonium and nitrate.

Within the plant the the ammonium or nitrate is processed into ammonia for/during the production of amino acids to build proteins. Young plants (seedlings) primarily use ammonium as the seedling contains a large amount of the enzyme that converts the ammonium into ammonia is the protein process.

As a plant matures , it uses and is able to use a much less proportional amount of ammonium (as it has little of the enzyme for converting ammonia) as it begins using nitrate as its primary source for protein production. (I surmise that this preference for nitrate may be advantageous to the plant in balancing its internal hydrogen content as the plant begins producing greater volumes of H+ as it matures?)

Ammonium is created in the microbial decay/processing of OM. When soil conditions are correct, other microbes can process the ammonium into nitrate. Ammonium is a cation and can bind and is therefore more likely to remain in the root layer. Nitrate is not a cation and therefore can easily be leached out of the root zone and lost. Sources of both ammonium and ntrate can also be added through the addition of N fertilizers.

Soil ammonium levels can build up due to a number of conditions, high OM, low nitrate producing microbe populations due to a lack of soil oxygen levels because of compaction/poor aeration or soil water saturation, or leaching of nitrates out of the root zone. As the levels of ammonium increase, it becomes the predominate N source available for plant uptake and because the mature plant does not have sufficient levels of the enzyme to convert the ammonium for protein production, the plant begins to suffer. The first signs are yellowing and brown/tan lesions. eventually, it can cause plant die off.

Studies have shown ammonium toxicity can occur when nitrate of ammonium soil levels fall below 2:1 or when total soil ammonium levels are greater than 7ppm for some turf grasses.

That's my take. Hope that helps.

Thanks for taking the time to explain this to me ;) I mowed it today and here is another pic just keeps getting greener ;) Thank God