Technical Bulletin No 9. 29.7.2022

• Insect activity is increasing under favourable conditions, though few cases have reached economic thresholds for control.
• Low levels of stripe rust are being detected across Western Victoria, however growers with robust programs that included fungicide at sowing are reporting little to no evidence of foliar disease.
• Low GSR deciles, frosts in early September and favourable prices have growers considering cutting crops for hay instead of harvesting for grain.
• Preparations for harvest are underway.

Very warm oceans to our north are creating an enhanced moisture source, and a blocking high hanging around in the Tasman Sea is stalling the passage of fronts, lows and troughs, which has led to persistent harvest rainfall. There still is no La Nina…

• Recent rainfall has kept growers busy applying nitrogen, fungicides, herbicides and insecticides.
• Low levels of stripe rust have been detected in the Mallee. Low levels of scald and spot form of net blotch in barley in the Wimmera and low levels of Septoria in wheat in the Wimmera and Mallee.
• In the Mallee, the window for nitrogen applications to boost yield is closing as cereal crops move into ear emergence. In the Wimmera, cereals range from late tillering through to stem elongation and flag leaf emergence, while canola is at early flowering in many districts.
• Low levels of insect activity are also being reported, including locusts in the Mallee, lucerne flea and redlegged earth mite (RLEM) in the Wimmera, cowpea aphids and blue green aphids in vetch, and lucerne leaf roller, RLEM and cowpea aphids in the North Central region.

• Sowing programs are generally continuing as planned with close attention paid to emergence of dry sown crops.
• BCG’s sowing program is approximately 20 per cent complete.
• With ongoing challenges with accessing feed, lower wool prices and shearing costs, many producers are responding by downsizing flocks or shifting more focus to lamb production.

In this edition:

• Canola windrow timing
• Windrowing barley
• Crop desiccation
• Frost
• Grain market update
• BCG research update