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Catalogue: GRDC Updates
There were limited yield responses to topdressing N in 2005 and 2006 (1/11 sites) Top-dressing resulted in increases in grain protein rather then grain yield indicating that N application needs to occur before the 8 leaf stage to maximise yield responses... The aim of the research was to determine whether in-crop N application is a useful practice in wheat and sorghum for farmers in the northern cropping zone... In contrast to grain yield, grain protein showed a more frequent increase with top-dressing indicating that N application may have occurred too late to contribute to yield...
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