The effect of AVG and GA on Mauritius pineapple
2003
Mohammed Selamat M. | Ahmad Tarmizi S.
A study was conducted to determine the effect of pre-harvest application of AVG (Aminoethoxyvenylglycine) and GA (Gibberellic acid) on the fruit size and quality of Mauritius pineapple. Field treatments were carried out in a farmer`s plot in Kampong Parit Raja Darat, Parit Raja, Johor during Mei-June 2003. AVG treated fruits were sprayed with 250 ppm AVG at 26, 19 and 12 days before harvest. GA treated fruits were sprayed with 20 ppm GA at 26 and 19 days before harvest. The control plot was sprayed with distilled water at 26 days before harvest. Fruits were harvested at 125 days after flower induction, on the 8th June 2003. Results obtained showed that fruits treated with GA were significantly heavier than those treated with AVG and the control. The GA treated fruits have longer and heavier crown compared to the fruits sprayed with AVG and the control. There was no significant difference with respect to the fruit sugar content indicated by the TSS (total soluble solid) values, among the treatments. Fruits treated with GA had the highest acidity (0.72 and 0.71 percent citric acid equivalent) and significantly different from the control. However, there was no significant difference between the treatments with regards to the sugar to acid ratio. The average values of the sugar to acid ratio was 19.33.
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