Efficacy of hot water treatment, wrapping and waxing on blue mould rot of kinnow (Citrus reticulata) fruits.

摘要

Investigation on effect of hot water treatment, wrapping and waxing on blue mould rot due to Penicillium italicum was carried out in kinnow (Citrus reticulata) fruits under artificial inoculation using cork-borer injury method. Hot water treatment at 55C proved most effective in checking the blue mould severity. Heat shrinkable polyethylene film provided maximum protection of the disease. The percent disease reduction index recorded was higher in heat shrinkable polyethylene film and perforated polyethylene bag than other packing materials, like butter paper, news paper and plain paper. The dipping of fruits in potassium metabisulphite solution (0.25%) followed by treating with paraffin wax (20%) gave maximum control of blue mould rot. Boric acid (0.25%) along with paraffin wax treatment used at higher concentrations i.e. 15 and 20% also reduced the disease significantly over the untreated control.