Stephenson, R. A.; Gallagher, E. C.; Pepper, P. M.
Abstract:
Phosphorus fertiliser was applied to mature macadamia trees on 3 plantations with relatively low soil P in south-eastern Queensland at rates of 0, 10, 20, 40, 80, 160, and 320 kg P/ha at El Briale and Como Park and 0, 15, 30, 60, 120, 240, and 480 kg P/ha at Haylock. High rates of P were being applied to macadamias throughout the Australian industry and this study was designed to provide a basis for determining optimum application rates and critical soil P levels. Soil P was 33