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Title : रिठ्ठाको वीउ उपचार विधि वारे जानकारी Material Type: printed text Authors: Hasta Bahadur Thapa, Author ; D. Lamichhane, Author ; GAUTAM, S.K., Author Publisher: Kathmandu : Department of forest Research and Survey DFRS Publication Date: 2009 (2066 BS) Pagination: 1 brochure Languages : Nepali (nep) Keywords: Brochure, Soapnut, Seed treatment Link for e-copy: http://lib.frtc.gov.np/elibrary/?r=561 रिठ्ठाको वीउ उपचार विधि वारे जानकारी [printed text] / Hasta Bahadur Thapa, Author ; D. Lamichhane, Author ; GAUTAM, S.K., Author . - Kathmandu : Department of forest Research and Survey DFRS, 2009 (2066 BS) . - 1 brochure.
Languages : Nepali (nep)
Keywords: Brochure, Soapnut, Seed treatment Link for e-copy: http://lib.frtc.gov.np/elibrary/?r=561 E-copies
http://nkcs.org.np/dfrs/ecfl/?r=561URLAbove-ground tree biomass and allometric relationships of Cinnamomum tamala grown in the western hill regions of Nepal / B. S. Poudel in BANKO JANAKARI - वनको जानकारी : A Journal of Forestry Information for Nepal, 21 : 1 (January - June 2011)
Title : Above-ground tree biomass and allometric relationships of Cinnamomum tamala grown in the western hill regions of Nepal Material Type: printed text Authors: B. S. Poudel, Author ; GAUTAM, S.K., Author ; D.N. Bhandari, Author Publication Date: 2011 Article on page: 3-12 p. Languages : English (eng) Keywords: Regression models fresh weight bark foliage branch wood stem wood Abstract: Biomass regression models are presented describing total above-ground biomass, stem wood, branch
wood, foliage and bark production for Tejpat (Cinnamomum tamala), a multi- purpose tree which is
found abundantly distributed and grown in western hill districts of Nepal. A total of 56 Tejpat
trees between 6.2 and 16.5 cm diameter at breast height (DBH) from farmers’ farmland and marginal
land in Arghakhanchi, Gulmi and Palpa districts were sampled and harvested. Mean fresh weight of
total above-ground biomass, stem wood, branch wood, foliage and bark was 77.03, 36.39, 15.16, 17.53
and 8.2 kg tree -1, respectively. Allocation of biomass was more in stem (47.24% tree-1) than in
foliage (22.75% tree-1), branch (19.69% tree-1) and bark (10.31% tree-1). Weight of tree component
was estimated as a function of DBH. After removal of the outliers, data were randomly divided into
two datasets: 70% for model calibration and another 30% for model validation. Correlation analysis
showed positive stronger linear relationship between DBH and biomass. Five regression models
(linear, logarithmic, quadratic, power and exponential) were developed. All models were
statistically significant, with R2 ranging from 0.64 to 0.83. Model validation was based on root
mean square error (RMSE). RMSE percentage for the best-fit equation varied between 16.64% and
44.82%. Linear model resulted in the least error and was selected as the best-fit model for
prediction of biomass of bark, foliage, branch, stem and total above ground tree biomass. Biomass
models developed could be applied to obtain biomass of different tree components of Tejpat grown in
the study area and could even be applied to other areas which have similar conditions; but it
should be validated before using them in new sites and conditions.Link for e-copy: http://lib.frtc.gov.np/elibrary/?r=7
in BANKO JANAKARI - वनको जानकारी : A Journal of Forestry Information for Nepal > 21 : 1 (January - June 2011) . - 3-12 p.[article] Above-ground tree biomass and allometric relationships of Cinnamomum tamala grown in the western hill regions of Nepal [printed text] / B. S. Poudel, Author ; GAUTAM, S.K., Author ; D.N. Bhandari, Author . - 2011 . - 3-12 p.
Languages : English (eng)
in BANKO JANAKARI - वनको जानकारी : A Journal of Forestry Information for Nepal > 21 : 1 (January - June 2011) . - 3-12 p.
Keywords: Regression models fresh weight bark foliage branch wood stem wood Abstract: Biomass regression models are presented describing total above-ground biomass, stem wood, branch
wood, foliage and bark production for Tejpat (Cinnamomum tamala), a multi- purpose tree which is
found abundantly distributed and grown in western hill districts of Nepal. A total of 56 Tejpat
trees between 6.2 and 16.5 cm diameter at breast height (DBH) from farmers’ farmland and marginal
land in Arghakhanchi, Gulmi and Palpa districts were sampled and harvested. Mean fresh weight of
total above-ground biomass, stem wood, branch wood, foliage and bark was 77.03, 36.39, 15.16, 17.53
and 8.2 kg tree -1, respectively. Allocation of biomass was more in stem (47.24% tree-1) than in
foliage (22.75% tree-1), branch (19.69% tree-1) and bark (10.31% tree-1). Weight of tree component
was estimated as a function of DBH. After removal of the outliers, data were randomly divided into
two datasets: 70% for model calibration and another 30% for model validation. Correlation analysis
showed positive stronger linear relationship between DBH and biomass. Five regression models
(linear, logarithmic, quadratic, power and exponential) were developed. All models were
statistically significant, with R2 ranging from 0.64 to 0.83. Model validation was based on root
mean square error (RMSE). RMSE percentage for the best-fit equation varied between 16.64% and
44.82%. Linear model resulted in the least error and was selected as the best-fit model for
prediction of biomass of bark, foliage, branch, stem and total above ground tree biomass. Biomass
models developed could be applied to obtain biomass of different tree components of Tejpat grown in
the study area and could even be applied to other areas which have similar conditions; but it
should be validated before using them in new sites and conditions.Link for e-copy: http://lib.frtc.gov.np/elibrary/?r=7
Title : Augmentation of germination in Sapindus mukorossi due to acid scarification in Jhanjhatpur nursery Material Type: printed text Authors: THAPA, H.B., Author ; GAUTAM, S.K., Author Publication Date: 2006 Article on page: 14- 20 p. Languages : English (eng) Keywords: Sapindus mukorossi, germination, acid, pre-treatment Abstract: The study on ‘effects of pre-sowing treatments on germination of Sapindus mukorossi Gaertn,’ was carried out in Jhanjhatpur nursery, Kailali district in April 2004. About 15- months old healthy seeds were treated in one of thirty ways before sowing and sown from 1 to 7 April 2004 in drills in a nursery bed at a spacing of 5 cm x 10 cm. The analysis revealed that thirty pre-treatments significantly differed in germination in 1-month (4-weeks) and 2-months (9-weeks) but these pre-treatments did not vary in 3-months (13-weeks). In 4-weeks, the pre-treatment, 90-minutes in concentrated hydrochloric acid significantly differed with twenty-five pre-treatments except the four pre-treatments of 15, 45, 60 and 75 minutes in concentrated acid. The highest germination (90%) was found in the pretreatment, 90-minutes in acid, which was followed by the germination (63%) in the pretreatment, 75-minutes in concentrated acid in 3-weeks. The highest non-germinated good seeds were in pre-treatment, 30% in 96 hours in cold water, followed by the pre-treatment, 27% in 5-minutes in boiled water and 72-hours in cold water. The highest non-germinated rotten seeds were in the pre-treatments, 3-minutes in boiled water and 72-hours in cold water and 10 minutes in acid, followed by the five pre-treatments, 3-minutes in boiled water and 120 hours in cold water, 5-minutes in boiled water then 24 and 72 hours in cold water, 5-minutes and 60-minutes in concentrated acid. The two pre-treatments, 75 and 90 minutes in concentrated acid can be used to get quicker and higher germination. The four pre-treatments, 3 minutes in boiled water and 48 hours in cold water, 5-minutes in boiled water and 120 hours in cold water, 144 hours in cold water and 120 hours in cow dung slurry are suggested as an alternative to acid treatments, if acid is not readily available in the market and there is a problem of handling the acid. Link for e-copy: http://www.nepjol.info/index.php/BANKO/article/view/358/350
in BANKO JANAKARI - वनको जानकारी : A Journal of Forestry Information for Nepal > 16 : 1 (January - June 2006) . - 14- 20 p.[article] Augmentation of germination in Sapindus mukorossi due to acid scarification in Jhanjhatpur nursery [printed text] / THAPA, H.B., Author ; GAUTAM, S.K., Author . - 2006 . - 14- 20 p.
Languages : English (eng)
in BANKO JANAKARI - वनको जानकारी : A Journal of Forestry Information for Nepal > 16 : 1 (January - June 2006) . - 14- 20 p.
Keywords: Sapindus mukorossi, germination, acid, pre-treatment Abstract: The study on ‘effects of pre-sowing treatments on germination of Sapindus mukorossi Gaertn,’ was carried out in Jhanjhatpur nursery, Kailali district in April 2004. About 15- months old healthy seeds were treated in one of thirty ways before sowing and sown from 1 to 7 April 2004 in drills in a nursery bed at a spacing of 5 cm x 10 cm. The analysis revealed that thirty pre-treatments significantly differed in germination in 1-month (4-weeks) and 2-months (9-weeks) but these pre-treatments did not vary in 3-months (13-weeks). In 4-weeks, the pre-treatment, 90-minutes in concentrated hydrochloric acid significantly differed with twenty-five pre-treatments except the four pre-treatments of 15, 45, 60 and 75 minutes in concentrated acid. The highest germination (90%) was found in the pretreatment, 90-minutes in acid, which was followed by the germination (63%) in the pretreatment, 75-minutes in concentrated acid in 3-weeks. The highest non-germinated good seeds were in pre-treatment, 30% in 96 hours in cold water, followed by the pre-treatment, 27% in 5-minutes in boiled water and 72-hours in cold water. The highest non-germinated rotten seeds were in the pre-treatments, 3-minutes in boiled water and 72-hours in cold water and 10 minutes in acid, followed by the five pre-treatments, 3-minutes in boiled water and 120 hours in cold water, 5-minutes in boiled water then 24 and 72 hours in cold water, 5-minutes and 60-minutes in concentrated acid. The two pre-treatments, 75 and 90 minutes in concentrated acid can be used to get quicker and higher germination. The four pre-treatments, 3 minutes in boiled water and 48 hours in cold water, 5-minutes in boiled water and 120 hours in cold water, 144 hours in cold water and 120 hours in cow dung slurry are suggested as an alternative to acid treatments, if acid is not readily available in the market and there is a problem of handling the acid. Link for e-copy: http://www.nepjol.info/index.php/BANKO/article/view/358/350
Title : A collection of abstracts on nursery and plantation research in Nepal Material Type: printed text Authors: Hasta Bahadur Thapa, Editor ; GAUTAM, S.K., Editor Publisher: Kathmandu : Department of forest Research and Survey DFRS Publication Date: 2012 Pagination: 82 p. Languages : English (eng) Link for e-copy: http://lib.frtc.gov.np/elibrary/?r=599 A collection of abstracts on nursery and plantation research in Nepal [printed text] / Hasta Bahadur Thapa, Editor ; GAUTAM, S.K., Editor . - Kathmandu : Department of forest Research and Survey DFRS, 2012 . - 82 p.
Languages : English (eng)
Link for e-copy: http://lib.frtc.gov.np/elibrary/?r=599
Title : Dia-back of Dalbergia sissoo plantation ind Saptari and Rupandehi districts ,Nepal Material Type: printed text Authors: THAPA, H.B., Author ; GAUTAM, S.K., Author Publication Date: 2004 Article on page: 19-24p. Languages : English (eng) Link for e-copy: http://www.nepjol.info/index.php/BANKO/article/view/17046/13858
in BANKO JANAKARI - वनको जानकारी : A Journal of Forestry Information for Nepal > 14 : 2 (July- December 2004) . - 19-24p.[article] Dia-back of Dalbergia sissoo plantation ind Saptari and Rupandehi districts ,Nepal [printed text] / THAPA, H.B., Author ; GAUTAM, S.K., Author . - 2004 . - 19-24p.
Languages : English (eng)
in BANKO JANAKARI - वनको जानकारी : A Journal of Forestry Information for Nepal > 14 : 2 (July- December 2004) . - 19-24p.
Link for e-copy: http://www.nepjol.info/index.php/BANKO/article/view/17046/13858 PermalinkPermalinkPermalinkPermalinkPermalink
