In Queensland, there has been no detailed research into the nutritional requirements of pumpkins. As a result, there is a wide range of fertiliser rates and forms used in the pumpkin production. Field experiments in north Queensland examined the response of the Jarrahdale pumpkins to rates of nitrogen and potassium. This research program provides a sound basis for modifying by soil and sap analysis the current nitrogen fertiliser recommendations. It evaluated the effects of fertiliser application regime on the eating quality of pumpkins grown in North Queensland. A guide to the nitrogen status of pumpkin plants based on sap nitrate was developed.