Management options for a frosted crop

Page last updated: Wednesday, 18 August 2021 - 12:14pm

Please note: This content may be out of date and is currently under review.

Frost is difficult to manage. It has a significant economic and emotional impact on the whole community. A good understanding of the extent of damage after a frost event will help inform salvage options and minimise the impact on the following season. The department has several climate tools which provides up to date information about the current season and its potential impacts on cropping and agriculture. This page outlines those climate tools and explores the possible salvage options and harvest considerations of a frosted crop.

Climate resources

Frost risk maps are produced July to October each year for growers and advisors to observe the severity and occurrence of frost events for the south west land division. These maps aid in strategic monitoring of crops for frost damage and help inform salvage options.  Historic maps have been compiled for the years 1975 - 2018 showing the occurrence and severity of frost events for each month (July, August, September and October). The August, September and October data has then been combined to show occurrence and severity over these sensitive months in one map. These maps can be viewed below or follow the links on the right.

Historic Frost Severity Map - July, August, September, October

Historic Frost Occurrence Map - July, August, September, October

Historic Frost Severity Map - Combined months

Historic Frost Occurrence Map - Combined month

An additional resource is the Seasonal climate information frost risk map. Frost risk maps show the average number of low temperature events occurring in the months when crops are at most risk of frost damage.

The Extreme weather events tool uses data from DPIRD's extensive weather station network to map extreme temperatures, either below or above a specified threshold. It provides real-time information about the location, duration and severity of frost and heat stress events, to help grain growers manage accordingly to reduce their financial impact.



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