The irrigated pastures at Rodwell Farms have been intensively fertilised (and monitored) on a rotational basis, and subsequent soil and plant tissue testing has been incorporated into the management regime. Soil samples have been GPS located on transects within designated paddocks to monitor trends of nutrient status and plant tests are taken up to 4 times per annum. Fertiliser has been applied by contractors with GPS and weighing equipment on their machinery and own machinery that is calibrated on farm.
Due to the intensive nature of monitoring on the milking platform, management is moving away from complete (N, P, K, S) blends to more specific nutrient applications where required. The fact that data is available on every paddock from soil and plant tests allows this management shift to occur.