Qualitative analysis of some firewood shrubs

Singh, B. P.; Khanduja, S. D.; Srivastava, G. S.

doi:10.1016/0144-4565(84)90076-3

Cited by 15 publications

(8 citation statements)

References 2 publications

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“…Woodfuel species with high D have high fiber tissue per unit volume and thick fiber walls than those with low D [29], more carbon and energy content per unit volume [30], and produce long-lasting embers [19,31]. However, like the findings of [32], this investigation also found that F. natalensis with a low D (Table 2) has a high GCV. Although it was not investigated during study, high GCVs have been attributed to high concentrations of extractives and lignins in wood [31] and is therefore a plausible explanation for this exception.…”

Section: Densitysupporting

confidence: 52%

Fuel value indices of selected woodfuel species used in Masindi and Nebbi districts of Uganda

2015

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Background: Biomass currently meets more than 97% of the total energy requirements in Uganda. However, contrary to this heavy reliance on biomass, there is paucity of information regarding the fuel value indices (FVIs) of woodfuel species used in different locations of the country such as Masindi and Nebbi districts. This study therefore sought to identify ten woodfuel species commonly used by the communities in these two districts and examine their FVIs from basic properties, namely; moisture content, density and gross calorific value. Methods: A semi-structured interview using a checklist of guiding questionnaire was conducted to generate a woodfuel species list. The familiarity index (FI) was calculated for each species and then used to rank ten commonly used species for further analysis. The moisture content, density and gross calorific value of the selected species were determined in triplicate. The FVI of each species was then determined from these basic properties. One-way ANOVA, Pearson product moment correlation, and Spearman rank correlation coefficient analyses were performed in SPSS ver.16.0 to examine the variation and relationship of variables. Results: Ten woodfuel species belonging to seven families and eight genera were identified as commonly used species. Combretum collinum was mentioned by every respondent as a suitable woodfuel species. A significant variation in moisture content and density was recorded among the species (F (df = 9) = 92.927, p = 0.0001) unlike in gross calorific value (F (df = 9) = 1.400, p = 0.253). There was a positive correlation between density and gross calorific value (r = 0.895, n = 30, p = 0.0001) and a negative correlation between moisture content and gross calorific value (r = −0.518, n = 30, p = 0.003). The FVIs obtained ranged from 1.10 in Ficus natalensis to 13.09 in Albizia grandibracteata. There was also a positive relationship (rho = 0.62) between FVIs and FIs using Pearson rank correlation coefficient. Conclusions: Moisture content and density are important properties in the selection of woodfuel species than gross calorific value. On the proposition of the FVIs, A. grandibracteata is a suitable woodfuel species than F. natalensis. These findings fit well into the ongoing efforts by Government and Civil Society Organizations to encourage woodlot management to ensure the sustainability of woodfuel in the country.

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Section: Densitysupporting

confidence: 52%

Fuel value indices of selected woodfuel species used in Masindi and Nebbi districts of Uganda

2015

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“…Samples 1 and 2 must take precedence as a firewood shrub. Nyctanthes arbortristis firewood data of Singh et al (1984) have a low calorific value, low density, low silica content, low biomass/ash ratio and high ash percentage, indicating less suitable as firewood than our investigated Seuli wood. This variation was may occur at different geographical locations.…”

Section: Discussionmentioning

confidence: 64%

“…However, no significant difference was found in biomass/ ash ratios of samples 3 and 7. Singh et al (1984) reported that the moisture content (50?0%), calorific value (17?12 kJ g to dry weight basis and 17?56 kJ g to ash free dry weight basis), density (0?81 g cm 23 ), ash (2?5%), silica (1?2%), carbon (27?0%), nitrogen (0?25%) and biomass/ash ratio (40?0) were found in the Nyctanthes arbortristis wood from India.…”

Section: Resultsmentioning

confidence: 99%

“…It is cultivated in gardens almost throughout Bangladesh. To the best of our knowledge, there is no published report on the elemental composition of this plant; on the other hand, without Singh et al (1984), there is no published report on the wood biomass properties in this plant. The goal of this study was to determine the potential of Seuli wood for the use as a biomass fuel, to evaluate the elemental composition of Seuli wood as a soil improver when used as ash or allowed to decompose, and also to evaluate the variation of these properties between the seven different places in Bangladesh.…”

Section: Introductionmentioning

confidence: 97%

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Fuel potential and elemental composition of the shrub Seuli wood,Nyctanthes arbortristisLinn

Rahman

Shahjahan

2012

International Wood Products Journal

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This study presents the fuel properties and elemental composition of Nyctanthes arbortristis Linn wood, obtained from seven different areas of Bangladesh. It was evaluated to determine its potential utilisation as a biomass fuel; its elemental components were evaluated to determine the wood's value as a soil improver when used as ash or allowed to decompose in soil. Results indicated the varying suitability of Seuli as firewood and it is concluded that the samples from Khulna Division were most suitable. The results showed the order of major element concentrations to be Ca.K.Si.

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“…Posee terpenoides, esteroides y alcaloides (Ghisalberti, 2000) que le otorgan a la hoja propiedades antimicrobianas, fungicidas y nematicidas (Chavan & Nikam, 1982;Sharma & Sharma, 1989;Begum et al, 2000). Además, es empleada como ornamental para cercos vivos (debido a su fácil mantenimiento e inflorescencias vistosas), como cobertor de suelos en jardinería y como leña (Singh et al, 1984;Ramírez-Hernández et al, 2012).…”

Section: Palabras Claveunclassified

Sistema reproductivo y biología floral de Lantana camara (Verbenaceae) en una población ribereña del Río de la Plata

García¹,

Aquino

Bouza

et al. 2019

Bol. Soc. Argent. Bot.

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Background and aims:The floral biology of Lantana camara, a native species of Central and South America and invasive cosmopolitan, still presents poorly-known and controversial aspects. The aim of this work was to determine the reproductive system, floral attributes and pollinators in a coastal population of Río de la Plata. M&M: The usual methods in pollination biology were employed. The study was performed in Ciudad Universitaria, Ciudad Autónoma de Buenos Aires, Argentina, during the spring of 2012. Results: The flowers emit mild and sweet odor by osmophores arranged around the floral tube entrance, in coincidence with the absorption-reflection pattern in the UV spectrum. Nectar accumulates in the floral tube, probably secreted by trichomes situated at the petals base. During anthesis, three floral phases succeed, distinguished by changes in corolla coloration, aroma intensity, reward quantity and anther and stigma maturity. The psychophilous flowers were visited by diurnal lepidopterans and by hymenopterans, dipterans and hummingbirds. The highest reproductive success occurred with free pollination; the self-incompatibility and P/O indexes showed partial self-compatibility and facultative xenogamy, respectively. Conclusions: L. camara is capable of successful spontaneous self-pollination, probably one reason of its global spread. Due to their activity on the flowers, visited floral phase, pollen load and frequency of visits, only the butterflies Agraulis vanillae maculosa, Dryas iullia alcionea and Cymaenes sp. would pollinate in this site.

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Qualitative analysis of some firewood shrubs

Cited by 15 publications

References 2 publications

Fuel value indices of selected woodfuel species used in Masindi and Nebbi districts of Uganda

Fuel value indices of selected woodfuel species used in Masindi and Nebbi districts of Uganda

Fuel potential and elemental composition of the shrub Seuli wood,Nyctanthes arbortristisLinn

Sistema reproductivo y biología floral de Lantana camara (Verbenaceae) en una población ribereña del Río de la Plata

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