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2025 CHU accumulations will commence on May 1, 2025.
FYI , So far in April, from 1st to 22nd at Harrow we have accumulated 108 CHU compared to a year ago of 136 . It takes 160 CHU for emergence to occur.
Updated April 22, 2025
It would appear ECCC has recalibrated weather station data and adjusted the GDD accumulation. This is more in line with what we are seeing in the change in wheat growth. Stem elongation is likely occurring now, field conditions will dictate N and S applications.