Can putting green N applications be scheduled using Kreuser's GDD model for trinexapac-ethyl?
21 April 2014
Yes, the timing of applications can be scheduled to coincide with the GDD model, but the rate of N must change. I've written about this in an analysis of summer conditions in Sydney. This chart shows why. Full explanation and case study in this report.
Hi Micah
Interesting stuff as always.
Any thoughts on using clipping yield as a measure of indication for PGR application?
For example, would using an accumulated total of clippings removed in a similar manner as GDD be effective in determining timing of application? If a site specific target was established (say 40 catchers) when this had been reached the count would reset as PGR is applied.
Posted by: Grant Saunders | 29 April 2014 at 08:47
Hi Grant,
Yes, I think cumulative clipping yield might give a similar result. But one would need to do a lot of site-specific testing to figure out just what that site target yield would be. The cool thing about the 200 GDD model is that it seems to be transferable across a pretty broad area. But cumulative clipping yield certainly sounds like a promising approach.
Micah
Posted by: Micah Woods | 02 May 2014 at 16:15