Taiwan Agricultural Research Institute, Council of Agriculture, Executive Yuan--Publication-Journal of Taiwan Agricultural Research

Journal of Taiwan Agricultural Research

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Effects of Pre-Harvest Water Management on Quantitative Changes of Quality Attributes in ‘Ponkan’ Mandarin (Citrus reticulata Blanco)

Tang, C. H. 2017. Effects of pre-harvest water management on quantitative changes of quality attributes in ‘Ponkan’ mandarin. J. Taiwan Agric. Res. 66(2):126–133.

Effects of Pre-Harvest Water Management on Quantitative Changes of Quality Attributes in ‘Ponkan’ Mandarin (Citrus reticulata Blanco)

Chia-Hui Tang1,*

Abstract

    To study the effect of pre-harvest water management on medium size (25 cm) ‘Ponkan’ mandarin, irrigation was suspended 56, 28, 14, 7 and 3 days prior to harvest and irrigation was withheld as a control in two consecutive years. Withholding water supply 7 days prior to harvest produced earlier the incidence of granulation than in the other treatments. After 1-month of fruit storage, withholding water supply 56 days prior to harvest produced more juice content than in the other irrigation treatments. At the initial storage, the total soluble solids (TSS) was observed increased at 2005 over the treatments. After 2-month of storage, it was found decreased, but not in fruit harvested from 2006. The TSS content of fruit decreased gradually with the advancement of the storage period and the decreasing trend was influenced significantly by different treatments.

Key words: ‘Ponkan’ mandarin, Storage, Granulation, Quality.


* Corresponding author, e-mail: tang@dns.caes.gov.tw
1 Assistant Research Fellow, Department of Horticulture, Chiayi Agricultural Experiment Station, Taiwan Agricultural Research Institute, Chiayi, Taiwan, ROC.

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