Plant population and row spacing on biomass sorghum yield performance

May, A.; Souza, Vander Fillipe de; Gravina, Geraldo de Amaral; Fernandes, Pedro Gonçalves

doi:10.1590/0103-8478cr20141133

Cited by 19 publications

(20 citation statements)

References 7 publications

(5 reference statements)

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“…After this period, growth and development of tillers were drastically suppressed, and the occurrence of new tillering was negligible across genotypes. Intentionally, this resulted in a population density of ∼75,000 plants ha −1 for all locations, lying closer to the low range of population densities studied in sweet and biomass sorghums by [30] and [31], respectively.…”

Section: Field Design and Phenotypingsupporting

confidence: 57%

Assessment of Stalk Properties to Predict Juice Yield in Sorghum

Carvalho

Rooney

2017

Bioenerg. Res.

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Sweet sorghum is an outstanding feedstock choice for bioethanol production, but the gap between theoretical and commercial ethanol yields must be reduced to improve economic viability. Extractable juice yield is a primary limiting factor for higher ethanol yield, but current phenotyping techniques to measure juice yield in sorghum can be laborious. Therefore, alternative approaches to measuring juice yield during selection are needed. The objectives of this study were to investigate the relationship between stalk-related traits and juice yield and to assess the ability to predict juice yield using agronomic traits and stalk properties across and within a diverse set of sorghum ideotypes (photoinsensitive, photosensitive, biomass, grain, and sweet types). Stalk weight, stalk volume, stalk diameter, and plant height had significantly strong associations with juice yield, which were consistent across different sorghum ideotypes. The direct and indirect effects of multiple predictive traits on juice yield varied greatly with the distinct sorghum subsets. However, equation modeling demonstrated that juice yield is satisfactorily predicted by jointly assessing stalk weight and stalk moisture. Moreover, alternative prediction models involving distinct combinations of agronomic and stalk-related traits had similarly good prediction accuracy. Altogether, this suggests that several prediction models can be used to accelerate phenotyping for juice yield, which will improve the selection process. Overall, the results indicate that increasing sorghum juice yield via indirect selection is possible, but the choice of prediction model depends on the ideotypes and resources available in a breeding program.

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Section: Field Design and Phenotypingsupporting

confidence: 57%

Assessment of Stalk Properties to Predict Juice Yield in Sorghum

Carvalho

Rooney

2017

Bioenerg. Res.

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“…The adjustment of plant spacing can elevate the yield of a crop per area. However, planting in high densities intensifies the intraspecific competition, and it reduces yield crop due to the limitation of the growth resources, such as water and nutrients (MAY et al, 2016).…”

Section: Resultsmentioning

confidence: 99%

“…This fact may be a result of lower efficiency in the use of solar radiation, water, and nutrients. Narrower spacings can provide better control of weeds due to faster canopy closure, reduce erosion, the cover of the soil surface, and improve planting quality through the slower rotational speed of seed distribution systems (MAY et al, 2016). Therefore, the wider spacing is not a good alternative since the productive indexes of fresh matter and juice weight are reduced.…”

Section: Resultsmentioning

confidence: 99%

“…Sweet sorghum (Sorghum bicolor (L.) Moench.) is an alternative in ethanol production, especially in areas during sugarcane off-season (MAY et al, 2016). Short cycle (90 to 120 days), ease of mechanization and high levels of fermentable sugars present in the stems are advantages of the sweet sorghum compare to others plants (RATNAVATHI et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

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Effects of weed management and plant arrangements on yield index of sweet sorghum

et al. 2019

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Sweet sorghum is currently an important alternative for ethanol production in sugar cane off-season. In this study was to evaluate the effects of plant arrangements and the application of atrazine and Smetolachlor on growth and productivity of sweet sorghum. An experiment was conducted in randomized block design and, arranged in split plots with four repetitions. Plots consisted of spacing (0.25 m, 0.45 m 0.45-0.45-0.90 m) and sub-plots of weed control methods -atrazine (2000 g ha -1 ), atrazine + S-metolachlor (2000 + 720 g ha -1 ), atrazine + S-metolachlor (2000 + 960 g ha -1 ), atrazine + S-metolachlor (2000 + 1200 g ha -1 ), atrazine + Smetolachlor (2000 + 1440 g ha -1 ). Besides that, manual hoeing control was added. The intoxication of sorghum plants and weed control was evaluated at 7, 14 e 28 days after herbicides application (DAA). Plant height, stem diameter, total fresh matter, juice mass and total soluble solids (°Brix) were evaluated at 120 days after crop emergence (DAE). There was no interaction between the factors spacings and control method for variables total matter fresh (TMF), height (H), stem diameter (D), juice mass (JM), and Brix. Application of the mixture (atrazine + S-metolachlor) in the highest doses reduced total fresh matter and °Brix. The spacing of 0.25 m provided the highest productivity of fresh matter, juice mass and increased the °Brix. The application of mixture (atrazine + S-metolachlor) controlled 90% of the weeds at 28 days after application. The increasing in doses of S-metolachlor elevates the intoxication in sorghum plants. The mixture (atrazine + S-metolachlor) has a potential for use in weed control in sweet sorghum, but at doses below 960 g ha -1 of S-metolachlor.

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“…The production of sorghum in Brazil reached 2 million tons during the 2016/2017 harvest year. Sorghum, grain, forage, grazing, biomass, and saccharin are fundamental to Brazil's agroeconomic scenario (May et al, 2016). However, rice straw, elephant grass, coffee, corn, coconut fibers, banana, and sisal rachis present high bioenergetic potential (García et al, 2015;Silva et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Chemical and Energetic Characteristics of African Sweet Sorghum as a Source of Bioenergy

et al. 2019

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The aim of this study was to evaluate the energetic potential achieved by the application of phyto-regulators to sweet sorghum cultivars. A randomized complete block design was used. Experiments were conducted using two sweet sorghum cultivars (BRS 508 and BRS 509), four phyto-regulators (ethephon, ethyl-trinexapac, glyphosate, and sulfometuron-methyl), and a control; four replicates were performed 70 days after sowing, at the beginning of the flowering phase of the plants, with the aid of a CO2pressurized coastal sprayer. The plants were harvested after 40 days, with the stems being cleared at the height of the apical bud, and were subjected to grinding for the extraction of broth. The following analyses were carried out: chemical (total extractives, lignin, and holocellulose contents), proximate (volatile matter, fixed carbon, and ash contents), and energetic (higher heating value). Multiple comparison (Tukey) and linear correlation (Pearson) analyses were carried out at a 5% significance level. The phyto-regulators positively and significantly influenced the chemical attributes and contents of lignin and fixed carbon. It was concluded that glyphosate, sulfometuron-methyl, and ethephon enhanced the biomass/bioenergy potential of sweet sorghum cultivars.

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Plant population and row spacing on biomass sorghum yield performance

Abstract: Biomass sorghum is one of the most promising crops for the production of electricity through the burning in (0.5, 0.7, 0.9 and 1.1m), and four plant populations (80,000; 100,000; 120,000 and 140

Cited by 19 publications

References 7 publications

Assessment of Stalk Properties to Predict Juice Yield in Sorghum

Assessment of Stalk Properties to Predict Juice Yield in Sorghum

Effects of weed management and plant arrangements on yield index of sweet sorghum

Chemical and Energetic Characteristics of African Sweet Sorghum as a Source of Bioenergy

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