Wheat grain nutrient concentrations: wide scale average values may not be adequate for field nutrient budgets

Large variability is observed in grain nutrient concentrations, which results in a degree of uncertainty in developing detailed nutrient budgets on a sub-region or individual field basis. This paper examines the interaction between individual grain nutrient values and the geographic scale in which they are collected and discusses the appropriate use of grain nutrient concentrations in developing nutrient budgets.

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