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Modelling predicts varied nitrogen responses

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Results from technology that measures soil moisture across the Western Australian grainbelt indicates that nitrogen fertiliser 'top-ups' applied in coming weeks could have variable yield benefits, depending on location... "Analysis of sites hosting new soil moisture probes suggests that potential benefits range from nil to more than 0.5 tonnes per hectare," Precision Agronomics Australia's Frank D'Emden said... " the modelling suggested that responses to top-up nitrogen ranged from nil at the Beacon, Bonnie Rock, Southern Cross and Merredin sites - where soil moisture is marginal - to at least 0.5t/ha at the Coomberdale, Bindi Bindi, Dowerin, Lake Grace and Jerramungup sites - where soil moisture levels are reasonable," he said...
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