Vol. 11, Special Issue 9 (2022)

Author(s):
Chikkanna GS, Shashidhar KR, Jyothi Kattegoudar and Ambika DS

Abstract:
The low cost ripening chamber is commercially used for ripening of Mango where ethylene gas is used and Temperature, Relative humidity and other parameters are maintained during ripening process. The cost of ripening chamber and operating cost are the major limiting factors for its adoption by small and Marginal farmers or traders. In this technology the mixture of water (1.0 litre), Etherel (0.95 ml) and sodium hydroxide (0.6 g) was used for release of ethylene gas in the chamber. The chamber capacity is about 1.5 to 2 tons. The unripe mature Mangoes (Alphonso) in plastic crates were kept inside the air tight ripening chamber for 24 h for enhancing ripening process. This technology was demonstrated as Field Level Demonstration (FLD) to Mr Ashok, Rampua, Kolar tq in 2017-18, and 2018 -19 he was ripened the Mangoes by conventional method by 1 ton and demonstrated technology by 1.5 tons and 4 tons and he received net profit of Rs. 90,000/- and Rs. 3,35,000/- respectively. In the conventional ripening method the ripening time (days), TSS (O Brix), shelf life and Colour were recorded as follows 14, 14.33, 7.33 and More Green Patches and small black spots respectively and meanwhile the demonstration technology values as follows like 5.33, 19.33, 12.33 and Light pale yellow colour and less green patches respectively. In the year 2019-20 and 2020-21 this technology was demonstrated to Mr. Venkatesh Gowda, Kasavanahalli, Srinivasapura Tq. He was ripened the Mangoes by using the demonstrated technology by 6 ton and 8.5 tons respectively and he has received net profit of Rs. 5,78,000/- and Rs 7,52,000/- respectively. The demonstration technology ripening time (days), Colour, TSS (O Brix), and shelf life were recorded as follows 13.33,15.33, 6.0 and More Green Patches and small black spots respectively and meanwhile the values as follows like 5.33, 18.33, 11.66 and Light pale yellow colour and less green patches respectively. The cost of ripening chamber for 1000 kg fruits on per day interest and ethylene gas was considered for calculating the cost of ripening. The sensory study showed that Mangoes ripened with ethylene gas were superior to untreated ones. Hence, Low cost ripening chamber has been demonstrated to farmers to ripen and marketing of Mangoes. The operating cost for mango ripening was 0.89 paise per kilogram.