EFFECT OF FRUIT HANDLING AND FRUIT COATINGS ON BLACKHEART (INTERNAL BROWN SPOT) AND OTHER ASPECTS OF FRESH PINEAPPLE QUALITY
From 1987 to 1991 a program to improve fresh fruit pineapple quality was conducted in Queensland. Fruit outturn studies at major Australian markets identified quality issues. Primary among these were winter blackheart (IBS) incidence, fruit abrasion and water blister (Thielaviopsis paradoxa). An extension and marketing skills program was run to improve fruit quality. Concurrently research occurred on the effect of the handling system on blackheart development and fruit quality. Several trials were also run to assess the ability of fruit coatings to reduce the incidence of blackheart symptoms during winter. Field chilling was clearly identified as the major contributor to blackheart symptoms seen at consumption. The effect of chilling during handling did not significantly increase symptoms within two weeks of harvest. Fruit coatings were found to reduce, but not eliminate, winter blackheart symptoms. During the summer months fruit coatings eliminated any symptoms of blackheart induced by cool storage shipment. Given the cost of treatment fruit coatings are not considered to be useful for winter fruit as a guarantee of blackheart freedom cannot be given.
Swete Kelly, D.E. and Bagshaw, J. (1993). EFFECT OF FRUIT HANDLING AND FRUIT COATINGS ON BLACKHEART (INTERNAL BROWN SPOT) AND OTHER ASPECTS OF FRESH PINEAPPLE QUALITY. Acta Hortic. 334, 305-316