POSTHARVEST CALYX RETENTION OF CITRUS FRUIT

Control of postharvest decay of citrus fruit with calcium polysulfide

Incidence of green mold of citrus, caused by Penicillium digitatum, was reduced by 80% or more by the immersion of lemons or oranges for 1–4 min in warm (40.6–43.3°C) ‘liquid lime-sulfur’ (LLS) solution that contained 0.75% (wt vol) calcium polysulfide. The incidence of sour rot, caused by Geotrichum citri-aurantii, was reduced 35–70% by this treatment. LLS was similar in effectiveness to other...

Reduction of postharvest decay in organic citrus fruit by a short hot water brushing treatment

The marketing of organic citrus fruit has markedly increased during the last few years. However, these fruits are not treated with chemical fungicides and suffer from relatively high rates of decay. In this study, we examined the possible use of a new hot water brushing (HWB) treatment, to disinfect the fruits and reduce decay development during postharvest storage. Preliminary observations hav...

Effectiveness of Postharvest Fungicides for the Control of Citrus Fruit Decays

Thiabendazole and benomyl were the most effective fungicides for the control of Diplodia natalensis Pole Evans stem-end rot, a major decay of early degreened fruit. This decay was also significantly reduced by imazalil and guazatine, but the level of control was not as consistent as that obtained with thiabendazole or benomyl. Control of Dip lodia stem-end rot was not obtained with DF-1OO or po...

Biocontrol of Citrus green mould and postharvest quality parameters

The potential for using Pichia guilliermondii BCC 5389 or Bacillus subtilis ABS-S14 by themselves or in combination for the control Penicillium digitatum in citrus, and their effects on postharvest quality of fruit was investigated. The percentage of disease with the combined antagonists was completely inhibited. Rapid colonization of P. guilliermondii was observed in the wounds during the firs...

Rapid Screening and Quantitation of Postharvest Fungicides on Citrus Fruit Using AxION DSA/TOF and Flexar SQ MS