Attendees at BCG’s recent Main Field Day were reminded that if there is a big frost event then crop damage is likely, so inspect your paddocks shortly after and make appropriate decisions.
Senior researcher Kelly Angel urged farmers to identify damage and know what temperatures they were dealing with, because “if you don’t measure you can’t manage”. Ms Angel was joined by Think Agri consultant Kate Burke, and together they showed the crowd how to identify frost damage and what to think about when dealing with frost-prone areas.
Dr Burke summed up the common feeling growers have when thinking about frost, especially as the season to date holds lots of promise in the Wimmera and Mallee.
“Frost leaves you feeling sick, but we need to think with our head,” she said.
While people have a fear that discussing frost will mean it will happen, this is exactly what needs to occur. Talking about the issue, identifying risks and discussing solutions is a great way to assist with many agronomic challenges, not just frost.
As we approach the business end of the season, the question is what is the value of the crop you are trying to protect now? If frost damage is large, subsequent management or crop salvage options include hay or grazing. While hay prices are low, cutting for hay provides other benefits such as weed management. Livestock prices are reasonable and could provide a good financial return.
Thinking about future seasons, Dr Burke said growers need to determine their property’s frost risk, both frequency and severity, to begin the conversation on how to reduce risk. Emphases was made on knowing you optimum flowering time, because this allows you to make management decisions.
Formulating rules for these areas, including sowing varieties less susceptible to frost and managing these areas through sowing time to reduce risk at the critical flowering window, will assist in minimising damage.
For more about BCG’s involvement in the GRDC National Frost Initiative, phone 5492 2787.
