Tony, John and Mark Bugeja Final Report

Region: Mackay

Who: Tony, John and Mark Bugeja

Location: Rosella

To use crop sensors to spatially locate variations in soybean yield and to create nitrogen application maps to match the variability without having a negative impact on sugarcane yield

Soybean are commonly planted during a fallow season to assist in fixing nitrogen in the soil for the following cane crop. The yield of the soybean crop is a reliable indicator of how much nitrogen the soybean plant will have fixed. As is the case with most agricultural crops, variability in yields often exists in the soybean crops and hence the amount of nitrogen that it has fixed. Low yielding crops will fix less nitrogen to the soil than high yielding crops and therefore needs to be accounted for when calculating the N requirements for the subsequent cane crops.