measuring soil temps.....for crabgrass

[katisan]

Split application rates are normally calculated from the recommended single application rate divided by two. With that said, I don't believe in that method to base split applications on, and I can see why timturf doesn't believe in split applications either. Our firm's fertilizer package contains split applications of pre emergent at a heavier rate. We've found this works extremely well. Rainfall and irrigation effects how long a pre emergent application is active, each year is different. By applying the second application, the pre emergent is guaranteed to remain active for a longer period of time.

[steve-o]

I don't believe in split applications. Will be making my first and only pre emerge application using barricade the first week of april. In my location 1/2 between richmond and washington dc, the average date for the soil temps to reach the proper temp is april the 20, 20 year history. My intention this year was to move my date up to 3/1 to 3/15, with a higher % quick release nitrogen source with my pre emerge to get better root growth with very little leaf growth out of fert app. Problem was, my material fell behind. I prefer barricade over dimension, less root prunning

Just my thought and experience

tim

with only that single application, what rate do you put it down at? do you just throw the maximun yearly rate down or do you do something different? also, how do you price it when you are using so much product?


steve