Nov 1 Nov 13 Nov 25 Dec 7 Dec 19
A graph (Figure 8.4) is generated which reveals that the greatest frequency of frost incidence of this magnitude (temp < -2°C) is in the period from July 11 to August 25. However, the last frost can occur as late as September 14.
The anthesis time of a wheat crop that corresponds to the highest yield potential is also the period of maximum frost risk at Dubbo. As the season progresses, both frost risk and yield potential are strongly reduced. The farmer, while choosing the sowing date to avoid frost risk, should carefully consider the trade-offs between risk and production potential.
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