An experiment was conducted at the Regional Agricultural Research Station. Lumle during 2001/2002 to find out the effectiveness of fruit stalk, yellowness and chemicals for controlling blue mould disease in mandarin orange in cellar store. This experiment was conducted in a three-factor RCBD with three replications. Twenty treatments were set with 20 fruits for each treatment. Observations were recorded on the number of healthy fruits at different intervals (30, 40, 60, 70, 100 and 120 days after storage).Fruits infected with blue mould were avoided after the disease occurrence. Fruits were kept in the cellar store for 120 days. After 120 days, total juice, equatorial and polar diameters, the TSS and TA %, were recorded.  The application of acetic acid fumigation @ 2.Sµl/liter of water on the stalked fruits with 50% yellow color was found better for controlling blue mould in cellar store. Similarly, the by dipping the fruits for ten minutes in garlic extract (1% solution) was also found effective in controlling the blue mould for long term storage ( 120 days).

 An experiment was conducted at the Regional Agricultural Research Station. Lumle during 2001/2002 to find out the effectiveness of fruit stalk, yellowness and chemicals for controlling blue mould disease in mandarin orange in cellar store. This experiment was conducted in a three-factor RCBD with three replications. Twenty treatments were set with 20 fruits for each treatment. Observations were recorded on the number of healthy fruits at different intervals (30, 40, 60, 70, 100 and 120 days after storage).Fruits infected with blue mould were avoided after the disease occurrence. Fruits were kept in the cellar store for 120 days. After 120 days, total juice, equatorial and polar diameters, the TSS and TA %, were recorded.  The application of acetic acid fumigation @ 2.Sµl/liter of water on the stalked fruits with 50% yellow color was found better for controlling blue mould in cellar store. Similarly, the by dipping the fruits for ten minutes in garlic extract (1% solution) was also found effective in controlling the blue mould for long term storage ( 120 days).