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Pastures the answer to beat long-term N decline
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For grain growers who thought they were already shovelling out the nitrogen every year, 's a sobering thought... Dr Angus says the rate of decrease appears to be linear over 10 to 30 years but after about 50 years, turns out to be curved and soil N eventually flat-lines... Dr Angus says it is likely that gross margins underestimate the profitability of the mixed pasture-crop system by not accounting for other synergies between pastures and crops...
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