GRDC Grains Research Update Campbell Town 2018
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Under-fertilising appears to be a major cause of yield gaps in cropping systems in the high rainfall zone (HRZ). Yield gaps need to take into account seasonal risk and relative crop and fertiliser prices. Soil test critical values should be higher than commonly used because of the higher yield potential of the HRZ....
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The final yields and gross margins in 2017 of wheat and barley were strongly influenced by key weather events. • Delayed sowing of wheat by nearly three weeks at one site significantly improved establishment and average yields by 1.5t/ha by avoiding a 56mm rainfall event a day after sowing. • Minimum temperatures at Westmere on four consecutive day...
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Annual ryegrass has evolved resistance to most post-emergent herbicides in the high rainfall zone (HRZ). Individual pre-emergent herbicides tend to have variable efficacy making mixtures and sequences better. Crops mature later in the HRZ meaning that more than 50% of the annual ryegrass seed can shed prior to harvest. This makes harvest weed seed ...
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In 2017 second year research results from the Hyper Yielding Cereals (HYC) project produced maximum yields of wheat of 13t/ha with above average temperatures during grain fill and a generally harder finish. With the barley research, despite two contrasting seasons the same three cultivars topped the yield rankings, these were RGT Planet, RGT Conque...
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