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Soil testing conducted on the farm near Lake Bolac in Victoria’s Western District showed low overall potassium levels with high variability, ranging from reasonable values on higher elevations, dropping significantly in lower lying areas. Potassium being a high value input, Neil and Charlie Vallance had to evaluate the profitability of the blanket rate application of MOP (N:0 P:0 K:50 S:0) previously used to address the issue.
