Review of Sorghum Production Practices: Applications for Bioenergy

Turhollow, Anthony; Webb, Erin; Downing, Mark

doi:10.2172/982121

Cited by 22 publications

(17 citation statements)

References 9 publications

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“…Sweet sorghum cv. Sucro 506 is an hybrid with high biomass production ranging from 22 to 33 Mg ha −1 d.w. and 1.5 Mg ha −1 of grain, plant height is about 4 m (Turhollow et al, 2010) and°Brix degrees between 15 and 16. On the other hand the PR32F73 maize hybrid is characterised as a late maturing cultivar with a high potential for silage, biomass, and grain production (e.g.…”

Section: Plant Materials and Treatmentsmentioning

confidence: 99%

Water uptake efficiency and above- and belowground biomass development of sweet sorghum and maize under different water regimes

2011

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Background and aims Lately sweet sorghum (S) has attracted great interest as an alternative feedstock for biofuel production due to its high yielding potential and better adaptation to drought than maize (M). However, little is known about the response of newly developed sweet sorghum genotypes to water deficits, especially at the root level and its water uptake patterns. The objective of this study was to compare the water uptake capacity, growth and developmental characteristics at the root and canopy levels of a sweet sorghum hybrid (Sorghum bicolor cv. Sucro 506) with those of maize (Zea mays cv. PR32F73) at two water regimes. Methods The trial was setup in a total of 20 rhizotrons (1 m 3 ), where calibrated soil moisture probes were installed for monitoring and adjusting the soil moisture content to 25% (well-watered, W) and 12% (drought stress, D). Results DS was able to sustain its physiological activity close to that of WS plants, while maize was not. The biomass production potential of DS was reduced about 38%, while in maize the reduction was 47%. The water use efficiency (WUE), however, was increased by 20% in sweet sorghum and reduced in 5% in maize. Moreover, in contrast to maize the root length density and water uptake capacity of DS was enhanced. Root water uptake efficiency in DM was sustained close to its potential, but not in sweet sorghum. Conclusions In summary, the better adaptation to drought of sweet sorghum is explained by increased WUE, sustained physiological activity and enlarged root system. It is also associated with a reduced water uptake efficiency compared to its control but maintained compared to maize.

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Section: Plant Materials and Treatmentsmentioning

confidence: 99%

Water uptake efficiency and above- and belowground biomass development of sweet sorghum and maize under different water regimes

2011

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“…It can be cultivated on marginal land, mainly drought prone areas where other crops cannot survive [5]. The morphology of sweet sorghum is relatively different from grain sorghum, which is generally have taller plant height and possess high biomass [6]. Furthermore, stalk of sweet sorghum produce juice that has high sugar content, which can be use as a main source of ethanol production [7,8], whereas grain of sorghum can also be used as raw materials for food, feed and functional food [9].…”

Section: Introductionmentioning

confidence: 99%

Varieties of sweet sorghum Super-1 and Super-2 and its equipment for bioethanol in Indonesia

Pabendon¹,

Efendi²,

Santoso³

et al. 2017

IOP Conf. Ser.: Earth Environ. Sci.

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Abstract. The demands for alternative sources of energy are currently growing because people now are more aware of the many negative impacts fossil fuel gives to the environment. Plant based renewable energy provides potential sources of energy with advantages of cleaner fuel effect and capability of integration with food crop production. Sorghum have been considered to be a highly potential source of food, feed and fuel, especially sweet stalk sorghum that posses both functions as source of food from its grain and fuel made from its stalk juice. Sorghum varieties are well known to have excellent adaptability in marginal areas, especially drought prone areas where other food crops are unable to thrive. The current paper aimed to share ongoing research on many functional uses of sweet stalk sorghum varieties released at Indonesian Cereals Research Institute (ICERI). Among many varieties that had been released were two sweet stalk sorghum varieties SUPER-1 and SUPER-2 released in 2013 that stands out in biomass yield and bioethanol production. Based on various researches conducted at different location and planting season, yield potential of biomass ranged at 30 -40 t/ha with higher yield occurred during dry season. Stalk juice sugar content in brix were found to be higher in dry season ranged at 13.6 % to 18.4 %, and the amount of juice stalk was obtained at about 30-50 % from total biomass yield. Furthermore, bioethanol production from stalk juice after fermentation was at the range of 8 to 10 % from total stalk juice volume. Modification of processing equipment of bioethanol have also been carried out and was able to increased the concentration of ethanol being distilled from 85% -92% to 90% -95%. Another result obtained was able to decreased fermentation time from 14-21 days to 6-10 days. Furthermore, the yield of ethanol from juice was also from an average of 4.95% to 6.75%.

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“…An advantage of sorghum compared to maize is that it has a comparatively lower seed requirement because only 10 to 15 kg/ha are used compared with 40 kg/ha required by other cereals (Kundiyana, 1996). In some regions is possible to produce multiple crops per year, either from seed (replanting) or from ratoon (Saballos, 2008;Turhollow et al, 2010).…”

Section: Botanical Features and Agronomic Characteristicsmentioning

confidence: 99%

“…The sweet sorghum juice is not commonly used for crystallized sugar production because of the presence of significant amounts of inverted sugars (glucose and fructose) that makes difficult crystallization in large-scale processes. However, the sweet sorghum juice, rich in fermentable sugars, has an excellent potential for yeast fermentation (Turhollow et al, 2010;Woods, 2000). The sweet sorghum juice is obtained through a mechanical operation with a roller mill composed by a set of cylinders, similar to the ones employed by the sugar cane mills.…”

Section: Ethanol Fuel From Sweet Sorghum Juicementioning

confidence: 99%

“…The creation of new varieties for ethanol production is not an easy task because the relevant traits, such as plant height, total soluble solids, juice production and lignin : cellulose : hemicellulose ratio are "non additive" . On the other hand and according to Turhollow et al (2010), the genetic mapping combined with its relatively fast hybridation and field tests, can facilitate the design and development of dedicated bioenergy cultivars. It is also of upmost importance to develop machinery to harvest sweet and biomass sorghums because the use of existing sugarcane equipments reduce yields and efficiencies.…”

Section: Future Trendsmentioning

confidence: 99%

See 1 more Smart Citation

Sorghum as a Multifunctional Crop for the Production of Fuel Ethanol: Current Status and Future Trends

et al. 2012

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Review of Sorghum Production Practices: Applications for Bioenergy

Cited by 22 publications

References 9 publications

Water uptake efficiency and above- and belowground biomass development of sweet sorghum and maize under different water regimes

Water uptake efficiency and above- and belowground biomass development of sweet sorghum and maize under different water regimes

Varieties of sweet sorghum Super-1 and Super-2 and its equipment for bioethanol in Indonesia

Sorghum as a Multifunctional Crop for the Production of Fuel Ethanol: Current Status and Future Trends

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