Con, This is degree day base 42 F. Bill
On Thu, Apr 1, 2010 at 5:13 AM, Con.Traas <[email protected]> wrote: > Sorry Bill, > > Degree days on what degree base? > > Con > > > > > > In Michigan we have used approximately 284 DD42 from March 1 as the start > point for king bloom on Macs. This is in our Michigan State University Fruit > Management guide E-154, from a chart originally prepared by Phil Schwallier > of MSU. This is based on pre-1990 weather data in the Grand Rapids area of > Michigan. > > > > In recent years we have been getting more DD before March 1....so ignoring > what happens before Mar 1 is now becoming problematic. So, I generally add > on 25 DD42 to the total and use a target of 310 DD42 from January 1 as the > start point for king bloom for Macs. Not sure if this works for your > area. 1/2" green is approx 205 DD42 from March 1, or 230 DD42 from January > 1 with my fudge factor. > > > > Bill Shane > > > > > > > -- Bill Shane District Extension Educator SW Mich Res & Extension Center Michigan State University 1791 Hillandale Rd, Benton Harbor, MI 49022 269-944-1477 x 205; 269-208-1652 cell
