Heat Units From 2009-2014

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Average Heat Unit Accumulation per Day (DD56) from May 16 through November 1 at Lewiston-Woodville for Various Categories
Average for the Interval Described
Time Period 2009 2010 2011 2012 2013 2014
May 16 to June 15 17.8 19.1 20.7 15.4 17.6 15.9
June 16 to July 15 20.1 24.5 25.2 23.0 21.2 22.5
July 16 to August 15 22.9 26.3 28.0 24.8 22.4 18.5*
August 16 to September 15 18.5 20.9 21.3 20.2 20.9
September 16 to October 15 11.9 14.4 11.1 20.3 10.6
October 16 to November 1 7.1 9.3 1.3 4.5 3.8
*Does not include August 14 and 15 (average computed on 29 days)

We appear to be slipping behind on heat unit accumulation due to cool temperatures in August. Wet soils and cloudy weather, in addition to cool temperatures, can slow maturation. What I have noticed is that the crop set the early pegs and has had minimal stress to date. With that in mind, we may not be in a situation where the limb crop is essential and therefore a delay in crop development due to the cool temperatures of late may not cause a late peanut crop for harvest. As you all know it is more complicated than one single factor. I will keep you updated as we move into September.

Article first appeared as North Carolina Peanut Note (PNNC-2014-124)