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by Green
September 12th, 2023, 3:43 pm
Forum: Cool-season grasses
Topic: Later Summer Lawn Quality
Replies: 2
Views: 504

Re: Later Summer Lawn Quality

Carbohydrates are lowest right now, so any continuing Summer stress can rapidly lower turf quality this time of year. Keep the blades sharp, fungicides at the ready just in case, and start fertilizing again as soon as your weather permits. This is a great time of year for the high lift blade you men...
by Green
September 12th, 2023, 3:39 pm
Forum: Cool-season grasses
Topic: Fungicide PGR Effect
Replies: 6
Views: 567

Re: Fungicide PGR Effect

Hey oze. Great observation! I was actually just talking with an expert PGR user on this exact topic. He said that on short maintained turf, the growth suppression from Propiconazole (measured in clipping reduction) is likely about 18%, and the duration of that being around 400 to 600 growing degree ...
by Green
August 15th, 2023, 1:53 am
Forum: Cool-season grasses
Topic: Late September planting - Minnesota
Replies: 5
Views: 543

Re: Late September planting - Minnesota

Definitely incorporate Perennial Ryegrass. If it starts cooling off and you're desperate, you could throw some of the annual rye in...but it will make a mess of the lawn next Spring.
by Green
August 15th, 2023, 1:51 am
Forum: Cool-season grasses
Topic: All Crabgrass?
Replies: 3
Views: 516

Re: All Crabgrass?

The photos are tough to evaluate, but something doesn't look right to me. My gut feeling and advice: see if you can rule out Dallisgrass/Field Paspalum/Bull Paspalum. These species have the V-shaped seedhead, and grow in tight upright bunches or flat mats, depending on the species. The don't root at...
by Green
August 1st, 2023, 1:04 am
Forum: Cool-season grasses
Topic: Grub treatment now
Replies: 5
Views: 499

Re: Grub treatment now

Dylox is much more risky to the applicator than the preventative insecticides.
by Green
July 30th, 2023, 12:23 am
Forum: Cool-season grasses
Topic: Grub treatment now
Replies: 5
Views: 499

Re: Grub treatment now

There are 4 main grub prevention active ingredients used today. The first two are chemical insecticides: Chlorantraniliprole and Imidacloprid. They are used in tye first half of the season. It's too late now. There are also two biological products... The first being Milky Spore, but it's next to wor...
by Green
May 1st, 2023, 8:05 pm
Forum: Cool-season grasses
Topic: Fertilizer and rainfall.
Replies: 6
Views: 550

Re: Fertilizer and rainfall.

[quote=MorpheusPA post_id=353201 time=1682947767 user_id=112] Modest to high. I vaguely considered dropping urea on the garden yesterday when we were "supposed" to get 0.5" of rainfall. Surprise, there was a thunderstorm in there that dumped 2" of pouring rain on us in the middle of that as temperat...
by Green
April 30th, 2023, 5:42 pm
Forum: Cool-season grasses
Topic: Reseeding lawn and pre soak grass seed
Replies: 8
Views: 822

Re: Reseeding lawn and pre soak grass seed

Regarding the pre-germination itself: Ideally, you don't want the seed container submerged in the water the entire time. More like a few hours in water, then out of water for a longer period...rewetting for short periods every so often so it doesn't dry out. Grass is not an aquatic plant, after all....
by Green
April 29th, 2023, 6:13 pm
Forum: Cool-season grasses
Topic: Suspected poa triv not lighting up (white) from Tenacity
Replies: 12
Views: 749

Re: Suspected poa triv not lighting up (white) from Tenacity

Sometimes, I think when energy is going to produce seeds, as Poa annua is now, it takes grasses longer and/or takes a higher dose of herbicide to impact them. Maybe there is less translocation going on. I've also seen the inverse: Triv switching to more seed production after hitting it with Mesotrio...
by Green
April 29th, 2023, 6:07 pm
Forum: Cool-season grasses
Topic: Fertilizer and rainfall.
Replies: 6
Views: 550

Re: Fertilizer and rainfall.

Morph,

What's your take on how much risk there is of losing nutrients if you apply your soluble fertilizers toward the end of a large rain event when most of the rain accumulation has already occurred, but the ground is already saturated?
by Green
April 29th, 2023, 1:13 am
Forum: Cool-season grasses
Topic: Fertilizer and rainfall.
Replies: 6
Views: 550

Re: Fertilizer and rainfall.

A forecast of 1.5 inches can easily turn into 2, 2.5, or even over 3.5 inches, as I found out recently.
by Green
April 25th, 2023, 1:34 am
Forum: Cool-season grasses
Topic: Runoff a major concern after heavy rain?
Replies: 4
Views: 299

Re: Runoff a major concern after heavy rain?

I also sprayed an 8% humic product. On some areas, I did it right before the rain; other areas got it a week ago. Saw this quote: "The organic combination of humic acid (HA) and urea can form stable chemical bonds, which decreases the nitrogen release rate and increases utilization efficiency of fer...
by Green
April 24th, 2023, 6:46 pm
Forum: Cool-season grasses
Topic: Runoff a major concern after heavy rain?
Replies: 4
Views: 299

Re: Runoff a major concern after heavy rain?

The pre-M is the most important part. Good to hear it probably bound. The fertilizer was a mix of urea, polymer coated urea, and Milorganite. Mostly water soluble urea at 70%. I applied no more than 0.25 lb of N per thousand, total, counting all three sources. On the sloped portion in the front, I a...
by Green
April 24th, 2023, 8:17 am
Forum: Cool-season grasses
Topic: Runoff a major concern after heavy rain?
Replies: 4
Views: 299

Runoff a major concern after heavy rain?

An inch and a half of rain was forecast. I put down fertilizer and pre-M. Of course, we get almost 3.75 inches. For areas that border roads, what happens after that much rain? Environmental activists want you to believe that everything in the soil solution (or a portion) will tend to move with the w...
by Green
April 24th, 2023, 8:04 am
Forum: Cool-season grasses
Topic: Who all has put down Pre Emergent?
Replies: 23
Views: 1161

Re: Who all has put down Pre Emergent?

Finally got it all applied over the past week or so. Then the rain came the other night...and didn't stop unitl almost 3.75 inches came down. Good for the fright, but probably not so good for pre-M and fertilizer as far as the environment and runoff goes.
by Green
April 24th, 2023, 8:01 am
Forum: Cool-season grasses
Topic: Suspected poa triv not lighting up (white) from Tenacity
Replies: 12
Views: 749

Re: Suspected poa triv not lighting up (white) from Tenacity

They don't even put the manufacture date on it anymore.
by Green
April 21st, 2023, 1:49 am
Forum: Cool-season grasses
Topic: Who all has put down Pre Emergent?
Replies: 23
Views: 1161

Re: Who all has put down Pre Emergent?

So far, I have applied my first split app of pre-M on less than 6,000 square feet. Additionally, only 0.55K or so has been watered in. Some is Prodiamine, and some is Dimension. I know I'm flirting with being a little late (especially with the Prodiamine as it's less soluble). I recommended to my fr...
by Green
April 17th, 2023, 9:42 pm
Forum: Cool-season grasses
Topic: Spring PreM with large fall overseed?
Replies: 5
Views: 306

Re: Spring PreM with large fall overseed?

Keep in mind that Quinclorac and Mesotrione can both act as short-term pre-Ms due to a 20-45 day (or so) residual in the soil. This is a good thing, because you get a pre-M type of effect without using a real pre-M.
by Green
April 17th, 2023, 9:40 pm
Forum: Cool-season grasses
Topic: Best Grass For Low pH Soil?
Replies: 10
Views: 804

Re: Best Grass For Low pH Soil?

Morph, Are you saying older varieties weren't created through hybridization of other varieties? First I've heard of this distinction. Regarding newer varieties appearing in box store seed, I've seen it happening more and more lately. Remember that "Summer" TTTF I told you about? Saw it a couple of w...
by Green
April 16th, 2023, 11:28 pm
Forum: Lawn Care Basics 101
Topic: Near instant roundup reaction
Replies: 7
Views: 7901

Re: Near instant roundup reaction

Looks like they're combining the glyphosate with Pelargonic acid to speed up browning. See the wikipedia article for a bit more info. This reminds me, a while back, 2023 was stated as being the year that Scotts would cease selling glyphosate on the residential market (because they couldn't tolerate ...