For the first six months after planting, trickle systems are commonly used. Once plants start to mature then under tree sprinklers are then necessary. Nitrogen is the main fertiliser required, and is commonly applied as urea, through the irrigation system. Regular desuckering is necessary to prevent unwanted suckers from taking nutrients from parent plants and reducing yield. Dead leaves on plants cause rubbing damage on fruit therefore trashing of these leaves is important to maintain fruit quality.
Some growers trim the lower hands of bunches to increase the size of remaining hands of fruit.
Bunch covers may be used to increase winter temperatures around bunches, reduce sunburn and prevent rubbing damage. Bananas must be handled carefully to prevent fruit damage. After removing the hands from the bunch, fruit may be dipped in a fungicide solution to increase shelf life. The optimum storage temperature is 13 o C. Most growers market their produce individually to Perth wholesalers. The Sweeter Banana Company is Carnarvon's only banana grower group.