Bio-ethanol production potential of sweet sorghum (Sorghum bicolor) cultivars under different spacing and harvest stages
DOI:
https://doi.org/10.59797/ija.v56i1.4668Keywords:
Cultivars, Ethanol, Harvest stages, Juice quality, Millable stalk yield, Sweet sorghum, SpacingAbstract
In a field experiment conducted at Kathalagere, Karnataka during kharif 2007 and 2008, three sweet sorghum [ Sorghum bicolor (L.) Monech] cultivars (Madhura, SSV-84 and RSSV-9) were evaluated for ethanol production potential under two spacing (45 cm X 10 cm) and two stages of harvest (50% flowering and at physiological matu- rity). Among the cultivars tested Madhura produced significantly higher ethanol yield (556.7 l/ha and 571.7 l/ha) when compared with SSV-84 (378.5 l /ha and 405 .2 l /ha) and RSSV-9 (368.4 l/ha and 425.9 l/ha). Madhura harvested at physiological maturity showed significantly higher ethanol yield 929.7 l/ha and 958.3 l/ha when com- pared with that harvested at 50% flowering (183.7 l/ha and 185.2 l/ha). Similarly Madhura cultivar recorded sig- nificantly higher brix (degrees) (13.6 and 14.0), pol percent in juice (7.3 and 6.4%) and reducing sugar per cent (3.1 and 3.7%), when compared with SSV-84 and RSSV-9.The highest benefit cost ratio was recorded with Madhura (1.88 and 1.73) when sown at spacing of 45 cm X 15 cm and 45 cm X 10 cm and harvested at physi- ological maturity.References
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