GRDC Grains Research Update Bendigo 2019
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Presented at
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• Surveys have shown that Russian wheat aphid (RWA) is distributed throughout Australian cereal growing regions. While population numbers have declined over summer, preliminary data suggests their overall range may remain the same, due to green bridge reservoirs in towns and irrigated regions. It is advised to monitor for the aphid itself on green ...
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• It is estimated that wheat yields in the high rainfall zone (HRZ) of the Southern Region are generally only producing 41% to 47% of water-limited yield potential (Yield Gap Australia). • There is a need to bridge the gap between actual and potential grain yields in the HRZ. • The biggest single driver of yield gap is nitrogen fertiliser rate. • ...
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• Resistance to pre-emergent herbicides in annual ryegrass is increasing and the resistance patterns are complex. • Mixtures of pre-emergent herbicides can help manage resistant annual ryegrass populations when coupled with seed set control tactics. • Resistance to 2,4-D in broadleaf weeds is increasing. Low level resistance is easy to control, but...
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