Determine the P requirements for different pulse crops in two different climatic x soil type scenarios using wheat as the benchmark crop.

 To validate the correlation of the current wheat P response curves and the P requirement of pulses, by conducting a series of field trials within the Esperance and Albany Port Zone.

This project developed a P response trial dataset consisting of four trial sites across three seasons (2021-2023) with a combination of 2-3 pulse crops in addition to wheat used as the benchmark. The dataset has outlined that using all response parameters, addressing P deficiency for all pulse crops is important to maximise gross margins. Relative response to P and P requirements of pulses are either in line with wheat or greater suggesting that current soil testing guidelines for wheat are appropriate for pulse crops and if there needs to be a shift it would be slightly higher than what is currently used for cereals. In line with recent GRDC investment assessing current crop response to applied P across broad acre cropping regions of WA this project supplements these findings and by expanding the messaging to pulses in rotation.