National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
A field experiment was conducted at Nileswaram farm, Regional Agricultural Research Station, Pilicode, Kerala Agricultural University during 2014-2016 to study the Influence of varieties on yield and qualities of coconut inflorescence sap. The varieties tried were Malayan Yellow Dwarf, Kerasree, West Coast Tall and Keraganga. Fully emerged unopened bunches were selected for tapping. The sap yield was measured for the harvesting 21st day after starting of tapping. Sample for chemical analysis were also collected on the same day. From the results it was revealed that the varieties varied significantly with respect to coconut inflorescence sap yield. It was maximum in the tall variety West Coast Tall (3.14 L/day) followed by the hybrid varieties Kerasree (2.09 L/day) and Keraganga (1.80 L/day). The dwarf variety Malayan Yellow Dwarf gave the lowest coconut inflorescence sap yield of 0.84 L/day. The varieties did not vary significantly with respect to pH and phenol content of coconut inflorescence sap. Non reducing sugar dominated over reducing sugar in all the varieties. More than 95 % of the total sugars in all varieties were contributed by non reducing sugars. Non reducing sugar content of sap was significantly higher in the dwarf variety Malayan Yellow Dwarf and tall variety West Coast Tall. Reducing sugar was highest in the tall variety West Coast Tall which was on par with hybrid Kerasree and significantly superior to the hybrid Keraganga and dwarf variety Malayan Yellow Dwarf. The varieties West Coast Tall and Malayan Yellow Dwarf were superior with respect to vitamin C content.
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