EVALUATION OF COCONUT HYBRIDS FOR GROWTH, PRODUCTIVITY AND TENDER NUT UNDER CENTRAL DRY ZONE OF KARNATAKA
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Date
2019-08
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University of Horticultural Sciences, Bagalkot (COLLEGE OF HORTICULTURE, BAGALKOT)
Abstract
The present study entitled, “Evaluation of coconut hybrids for growth, productivity and tender nut under Central Dry Zone of Karnataka” was carried out at Horticulture Research and Extension Station, Arsikere, University of Horticultural Sciences, Bagalkot during 2018-19 with nine coconut hybrids and one local variety. Among the hybrids evaluated, WCT x GBGD recorded highest palm height (10.59 m) and husk thickness (3.51 cm), where as WCT x MYD recorded highest palm girth (127.95 cm). The number of functional leaves (34.17), total leaf length (5.25 m), number of female flowers produced (23.85), number of bunches per palm (8.83), number of tender nuts per bunch (11.84), number of mature nuts harvested per palm (62.33), dehusked nut weight (516 g), copra yield (9.54 kg/palm), highest reducing sugar (3.77 g/100 ml), total sugar (5.41 g/100 ml), protein content (1.11%) were recorded highest in Kalpa Ganga (GBGD x FJT). Kera Sankara (WCT x COD) recorded significantly maximum kernel weight (258.17 g), kernel thickness (1.52 cm), highest copra content (153.67 g/nut) and oil percent (68.70). Whereas, maximum length of mature nut (31.91 cm) and shell weight were recorded in Vasista Ganga (195.10 g).
Significantly, highest whole nut weight (1246.93 g), breadth of nut (20.17 cm), husk weight (784.84 g), oil yield (6.27 kg/palm) and tender nut characters viz., maximum volume of nut water (306.67 ml/nut), maximum qualitative characters such as TSS (5.77 ˚Brix), pH (5.35), non reducing sugar (2.01 g/100 ml), optimum level of sodium (24.80 ppm), potassium content (1771.05 ppm), phosphorous (5.83 mg/100 ml), calcium (60.33 mg/100 ml), magnesium (19.17 mg/100 ml) and highest organoleptic score (8.25) in tender nut water were recorded by Abhaya Ganga (GBGD x LCOT).
Among the hybrids evaluated, Kalpa Ganga (GBGD x FJT) performed best with respect to yield (62.33), Kera Sankara (WCT x COD) with respect to oil content (68.70 %) and Abhaya Ganga (GBGD x LCOT) was found to be best with respect to tender nut quality under Central Dry Zone of Karnataka.