Flowering pattern of biodiesel plant Jatropha in frost- and drought-prone regions of Botswana

Ishimoto, Yasuko; Kgokong, Sylvia; Yabuta, Shin; Tominaga, Jun; Coetzee, Tidimalo; Konaka, Takafumi; Mazereku, Charles; Kawamitsu, Yoshinobu; Akashi, Kinya

doi:10.1080/15435075.2017.1339041

Cited by 8 publications

(7 citation statements)

References 14 publications

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“…121207-1, hereafter referred to as JK) [13], together with one accession from Ghana (hereafter GA), were used in this study. They were planted in 2011 in an experimental field at the Department of Agricultural Research, Gaborone, Botswana, and grown for more than five years, as described previously [14]. Fully matured seeds were harvested in the 2016/2017 season, dried under ventilation, and stored in a freezer at −30 • C. The 5-15 seeds were randomly selected from each accession and thawed at room temperature of 25 ± 2 • C before measurement.…”

Section: Plant Materialsmentioning

confidence: 99%

“…It suggested Jatropha as a potential feedstock in this country [11,12]. Since then, various studies have been undertaken on the development and assessment of Jatropha bioenergy in Botswana, including cultivation management [13][14][15][16], plant physiology [17][18][19], the assessment and utilization of seed oils and non-oil biomass feedstock [20][21][22], and environmental and socio-economic impacts [12,14,23,24]. The research also revealed dozens of unique Jatropha accessions in the drought-and frost-prone regions of Botswana, among which several potentially superior genotypes with high yields, insect pest tolerance, and environmental adaptations have been nominated [13,15,25].…”

Section: Introductionmentioning

confidence: 99%

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Multivariate Analysis of Seed Chemical Diversity among Jatropha curcas in Botswana

et al. 2021

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Jatropha (Jatropha curcas L.) has been identified as a potential bioenergy feedstock in arid regions, but knowledge of the diversity of its chemical characteristics is limited. In this study, 61 Jatropha accessions growing in Botswana, where both severe drought and winter frosts frequently occur, were analyzed for their seed chemical properties. Histogram analyses and meta-analysis comparisons with seeds from other countries/continents showed that the median/mean dry seed weight, toxic compound phorbol esters, and C18:0 fatty acid levels in the Botswanan accessions were lower than those from other countries/continents. A clustered heat map analysis indicated five clades for the Botswanan accessions, and their physicochemical traits were also categorized into five groups. Many positive and negative correlations were observed among the chemical traits, including negative correlations between the C18:3 (linolenic acid) content and yield-related traits (lipid content and dry seed weight). Principal component analysis highlighted the existence of accessions with highly deviated seed chemical compositions, such as those enriched in C18:0/C18:1 and C16:0/C16:1/C18:3 fatty acids. Overall, the present study suggests considerable diversity in the seed chemical compositions of Botswanan Jatropha accessions. Various accessions could be useful as feedstock for specific industrial products, as well as for breeding materials for the fortification of specific chemical ingredients.

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Section: Plant Materialsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multivariate Analysis of Seed Chemical Diversity among Jatropha curcas in Botswana

et al. 2021

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“…Fallen leaves of jatropha were collected in July (winter) 2016 from a jatropha cultivation site [24] located approximately 4 km northeast of the Department of Agricultural Research station in Gaborone, Botswana. The cold-induced defoliation of jatropha in this climatic region has been described previously [24,25]. The fallen leaves were dried in the sun and subsequently used for biochar production.…”

Section: Production and Analysis Of Jatropha Fallen Leaf Biocharmentioning

confidence: 99%

“…Jatropha plants growing in the temperate zone are deciduous, losing their leaves in the cold season, so the fallen leaf biomass of this species cannot be neglected when considering whole-crop biorefineries [5,24,25]. A cultivation trial in Patancheru, India, estimated that jatropha trees produce 550 g of fallen leaves per plant at one year old and 1450 g at three years old, while the total plant biomass for four-year-old trees was estimated at 6.14 kg plant −1 [26], suggesting that fallen leaves make up a major proportion of the biomass that is produced during jatropha cultivation.…”

Section: Introductionmentioning

confidence: 99%

“…In this study, fallen leaves of jatropha derived from a cultivation trial in Botswana [24,25] were pyrolyzed and applied to an acidic and undernourished soil to evaluate the use of jatropha fallen leaves as a feedstock for producing a soil conditioner. In addition, we investigated the performance of a simplified and inexpensive oil-drum carbonizer for the production of jatropha fallen leaf biochar to facilitate the implementation of biochar production in resource-poor villages in rural areas [39][40][41].…”

Section: Introductionmentioning

confidence: 99%

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Use of Carbonized Fallen Leaves of Jatropha Curcas L. as a Soil Conditioner for Acidic and Undernourished Soil

et al. 2019

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Jatropha (Jatropha curcas L.) represents a renewable bioenergy source in arid regions, where it is used to produce not only biodiesel from the seed oil, but also various non-oil biomass products, such as fertilizer, from the seed cake following oil extraction from the seeds. Jatropha plants also generate large amounts of fallen leaves during the cold or drought season, but few studies have examined the utilization of this litter biomass. Therefore, in this study, we produced biochar from the fallen leaves of jatropha using a simple and economical carbonizer that was constructed from a standard 200 L oil drum, which would be suitable for use in rural communities, and evaluated the use of the generated biochar as a soil conditioner for the cultivation of Swiss chard (Beta vulgaris subsp. cicla “Fordhook Giant”) as a model vegetable in an acidic and undernourished soil in Botswana. Biochar application improved several growth parameters of Swiss chard, such as the total leaf area. In addition, the dry weights of the harvested shoots were 1.57, 1.88, and 2.32 fold higher in plants grown in soils containing 3%, 5%, and 10% biochar, respectively, compared with non-applied soil, suggesting that the amount of biochar applied to the soil was positively correlated with yield. Together, these observations suggest that jatropha fallen leaf biochar could function as a soil conditioner to enhance crop productivity.

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Sustainable biofuel production in Sub‐Saharan Africa: Exploring transesterification process, nonedible feedstocks, and policy implications

Kichonge,

Kivevele

2024

WIREs Energy & Environment

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The world is currently dealing with an energy crisis, primarily due to heavy reliance on finite fossil fuels and the associated rise in energy demand. In response to this crisis, replacing heavy reliance on finite fossil fuels with biodiesel has gained attention as an alternative solution. Sub‐Saharan African (SSA) biodiesel studies have traditionally focused on improving transesterification but overlook socio‐economic, policy, and institutional impacts on production sustainability. To address this gap, this study comprehensively reviews the sustainability of transesterification‐based biodiesel production from nonedible feedstocks in SSA. The study's incorporation of socio‐economic factors, policy considerations, sustainability concerns, and institutional frameworks reveals the complex prospects and challenges facing biodiesel production in SSA. The findings reveal that sustainability challenges in SSA stem from a lack of an integrated approach, resulting in conflicting local and global policies. The study determines that neglecting socio‐economic factors, policy considerations, sustainability concerns, and institutional frameworks weakens regional biodiesel production sustainability. Evidence from the study emphasizes the role of an integrated approach in promoting biofuel production, establishing markets, and improving the livelihoods of the region's population. Furthermore, the review shows that transesterification can yield biodiesel with comparable physical properties to conventional diesel, making it a wide region's favored option.This article is categorized under: Human and Social Dimensions > Energy and Climate Justice Sustainable Energy > Bioenergy Sustainable Development > Goals

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Flowering pattern of biodiesel plant Jatropha in frost- and drought-prone regions of Botswana

Cited by 8 publications

References 14 publications

Multivariate Analysis of Seed Chemical Diversity among Jatropha curcas in Botswana

Multivariate Analysis of Seed Chemical Diversity among Jatropha curcas in Botswana

Use of Carbonized Fallen Leaves of Jatropha Curcas L. as a Soil Conditioner for Acidic and Undernourished Soil

Sustainable biofuel production in Sub‐Saharan Africa: Exploring transesterification process, nonedible feedstocks, and policy implications

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