My apologies, I was doing the math while I was getting ready to leave work. Double checked it and it is only a 3 month barrier for 2lbs/k of .37% prodiamine. It is not linear.
Just curious, how are you calculating how long the barrier will last?
Or are you going by experience/using a table to determine how long a certain number of ounces of AI lasts?
That's crazy. I had no idea the two halves in the spreader were supposed to be the same product until you said it. Thought maybe one was Pendimethalin and the other was something else. Were those both your bags, and from the same batch?
Btw, Grassfactor...I just watched your video on Screamin' Green 16-2-3, a fertilizer that I bought about two years ago, and was super excited about, as well. Problem was, I haven't been able to find it since then. Thanks to this forum, I found out that SIteOne sells it, so I plan to use it again this year. I liked seeing your enthusiasm and the technical details about the product in your video.
Edi: just found your granular pre-M video. Watching it now for more details on what you posted above.
Thanks. 0.65 (of what unit?) per acre?
Do they have a recommendation for late Summer or early Fall as well? At this point, that's the only time of year I use Prodiamine, and only on areas that used to have an annual bluegrass issue. (I use Dimension in the Spring.)
Active Ingredient. But I'm not sure what people mean in this thread by:
"0.38 active ingredient rate"
or
"0.38 active ingredient per acre"
or
"0.38 active ingredient / rate"
I've never heard any of those 3 terminologies before. To me, there are units missing. Hopefully someone will clarify. Maybe I'm just being stubborn, but it doesn't make sense.
I looked at the water granular label. Max rate is 1.5lb/acre of that product that it is 65% ai.
That's 1lb ai/acre. An acre is 43.5ksqft and a pound is 16oz (dry).
That's 0.358oz ai/ksqft. (Yearly max).
Your bag is 0.38% ai by weight. 1lb x 0.0038 x 16 = 0.0608oz of ai/ksqft for every 1lb you apply. Multiply by 6 and you get 0.3648oz of ai/ksqft. So your max is right at 6lb of that product per year (account for your spring application.)
Me, too. I'm going to have to read it about 25 times. I don't feel like it, though! :lol:
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