date:Jan 24, 2013
yield for 2013. A second issue surrounding trend yield calculations is the length of the time period used to calculate the trend. Different periods result in different trend calculations. We continue to think that 1960 through 2012 is the correct time period for calculating the 2013 trend yield.
A second consideration for some in forming early yield expectations is the state of soil moisture going into the planting season. However, as learned again last year, the yield implications of those co