Effect of tuber size & weight on yield and quality of greater yam (Dioscorea alata L.) under southern Rajasthan conditions

Abstract

The present investigation entitled Effect of Tuber size & weight on Yield and quality of greater yam (Dioscorea alata L.) Under Southern Rajasthan Conditions was conducted during June 2017 to March 2018 at Horticulture Farm, Department of Horticulture, Rajasthan College of Agriculture, Udaipur. The experiment were comprising with different weight of tubers (25g, 50g, 75g, 100g, 125g, 150g, 175g, 200g, 225g and 250g) and three replications. The vegetative growth parameters were significantly influenced by different weight of tubers. Minimum days to sprouting (14.40 days), maximum speed of emergence (81.50%), no. of leaves per vine after four months (96.00), vine length after four months (183.76cm), girth of vines after four months (6.06 cm), leaf area (8181.76 cm2) were recorded in highest weight of tuber (250g). Maximum sprouting percentage (100%) was found in treatment T1 (25g) and T4 (100g). The maximum survival percentage (90.00%) was found in treatment T9 (225g). The minimum days to harvesting from sowing (215 days) was observed in treatment T10 (250g). The maximum number of tubers per vine (3.33), tuber length (18.18 cm), tuber diameter (9.99 cm), tuber yield per vine (1.97 kg) and yield (24.36 t/ha) were recorded highest in treatment T8 (200g). The maximum gross return (₹ 730800ha-1), net return (₹545141 ha-1) with BC Ratio (2.90) were observed under treatment T8 (200g).