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Abstracts of postgraduate theses/dissertations (2000-2006) / R.B Thapa
Title : Abstracts of postgraduate theses/dissertations (2000-2006) Material Type: printed text Authors: R.B Thapa, Author ; M. D. Sharma, Author Publisher: Institute of Agriculture and Animal Science Publication Date: 2006 Pagination: ii; 132p. Size: Journal Languages : English (eng) Class number: 630.5 Abstracts of postgraduate theses/dissertations (2000-2006) [printed text] / R.B Thapa, Author ; M. D. Sharma, Author . - [S.l.] : Institute of Agriculture and Animal Science, 2006 . - ii; 132p. ; Journal.
Languages : English (eng)
Class number: 630.5 Hold
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Barcode Call number Media type Location Section Status 001271 630.5 THA Reports AFUFOF Gift Available Biology and management of Chinese citrus fly, Bactrocera minax (Enderlein) (Diptera: Tephritidae) / D. Adhikari in Journal of Agriculture and Forestry University, Volume 5 (2022)
[article]
Title : Biology and management of Chinese citrus fly, Bactrocera minax (Enderlein) (Diptera: Tephritidae) : | D. Adhikari, R. B. Thapa, S. L. Joshi, J. J. Du, and S. Tiwari Material Type: printed text Authors: D. Adhikari, Author ; R.B Thapa, Author ; S. L. Joshi, Author ; J. J. Du, Author ; S. Tiwari, Author Publication Date: 2022 Article on page: 1-13 p. Languages : English (eng) Keywords: Bactrocera minax, Citrus, Chinese citrus fly, life cycle, management Abstract: The Chinese citrus fly, Bactrocera minax (Enderlein) (Diptera: Tephritidae) is an important insect pest of citrus
species which causes significant fruit damage in Nepal, India, Bhutan and China. An attempt has been made
to review the biological aspects and management measures of this pest compiling published literatures in the
national and international journals, proceedings, reports, newsletter and books. This review highlights the
findings on the nomenclature, morphology, distribution, biology of the Chinese citrus fly and provides potential
prospect of pest management measures, which are useful to the researchers, policy - makers, citrus growers and
extension workers.Link for e-copy: https://afu.edu.np/sites/default/files/Biology_and_management_of_Chinese_citrus_ [...]
in Journal of Agriculture and Forestry University > Volume 5 (2022) . - 1-13 p.[article] Biology and management of Chinese citrus fly, Bactrocera minax (Enderlein) (Diptera: Tephritidae) : | D. Adhikari, R. B. Thapa, S. L. Joshi, J. J. Du, and S. Tiwari [printed text] / D. Adhikari, Author ; R.B Thapa, Author ; S. L. Joshi, Author ; J. J. Du, Author ; S. Tiwari, Author . - 2022 . - 1-13 p.
Languages : English (eng)
in Journal of Agriculture and Forestry University > Volume 5 (2022) . - 1-13 p.
Keywords: Bactrocera minax, Citrus, Chinese citrus fly, life cycle, management Abstract: The Chinese citrus fly, Bactrocera minax (Enderlein) (Diptera: Tephritidae) is an important insect pest of citrus
species which causes significant fruit damage in Nepal, India, Bhutan and China. An attempt has been made
to review the biological aspects and management measures of this pest compiling published literatures in the
national and international journals, proceedings, reports, newsletter and books. This review highlights the
findings on the nomenclature, morphology, distribution, biology of the Chinese citrus fly and provides potential
prospect of pest management measures, which are useful to the researchers, policy - makers, citrus growers and
extension workers.Link for e-copy: https://afu.edu.np/sites/default/files/Biology_and_management_of_Chinese_citrus_ [...] Effect of planting dates of maize on the incidence of borer complex in Chitwan, Nepal / G. Bhandari in Journal of Agriculture and Forestry University, Volume 2 (2018)
[article]
Title : Effect of planting dates of maize on the incidence of borer complex in Chitwan, Nepal Material Type: printed text Authors: G. Bhandari, Author ; R.B Thapa, Author ; Y. P. Giri, Author ; H. K. Manandhar, Author Publication Date: 2018 Article on page: 107-118 p. Languages : English (eng) Keywords: Maize, planting date, borer complex, temperature, season Abstract: Borer complex (Chilo partellus Swinhoe and Sesamia inferans Walker) are the major pests of maize
in Nepal. Infestation of maize borer complex as well as climatic variability of growing areas are the
major causes for low production and productivity of maize as compared to neighboring countries.
Therefore, an experiment was conducted to find out the effect of planting time on open pollinated and
hybrid maize variety for the incidence of borer complex during winter, spring, and summer seasons at
the experimental field of National Maize Research Program, Chitwan. The experiment was conducted
using Randomized Complete Block design with a factorial combination of treatments, each replicated
for three times, for two maize genotypes, at every 10 days interval. The results showed that borer
incidence varied with maize planting dates and genotypes. The highest plant damage by stem borers
was up to 29.9% in genotype S03TLEY-FM (open pollinated variety) and 29.0% in RML 95/RML 96
(hybrid variety) at May planting, respectively. The crop planted from January to February reached into
knee height stage when the temperature ranged 25-28°C during February to March which was more
favorable for the growth and development of borers. September planting was the best time for hybrids,
and September as well as March planting was best time for open pollinated variety with respect to low
borer incidence in Chitwan condition.Link for e-copy: https://afu.edu.np/sites/default/files/Effect_of_planting_dates_of_maize-on-the_ [...]
in Journal of Agriculture and Forestry University > Volume 2 (2018) . - 107-118 p.[article] Effect of planting dates of maize on the incidence of borer complex in Chitwan, Nepal [printed text] / G. Bhandari, Author ; R.B Thapa, Author ; Y. P. Giri, Author ; H. K. Manandhar, Author . - 2018 . - 107-118 p.
Languages : English (eng)
in Journal of Agriculture and Forestry University > Volume 2 (2018) . - 107-118 p.
Keywords: Maize, planting date, borer complex, temperature, season Abstract: Borer complex (Chilo partellus Swinhoe and Sesamia inferans Walker) are the major pests of maize
in Nepal. Infestation of maize borer complex as well as climatic variability of growing areas are the
major causes for low production and productivity of maize as compared to neighboring countries.
Therefore, an experiment was conducted to find out the effect of planting time on open pollinated and
hybrid maize variety for the incidence of borer complex during winter, spring, and summer seasons at
the experimental field of National Maize Research Program, Chitwan. The experiment was conducted
using Randomized Complete Block design with a factorial combination of treatments, each replicated
for three times, for two maize genotypes, at every 10 days interval. The results showed that borer
incidence varied with maize planting dates and genotypes. The highest plant damage by stem borers
was up to 29.9% in genotype S03TLEY-FM (open pollinated variety) and 29.0% in RML 95/RML 96
(hybrid variety) at May planting, respectively. The crop planted from January to February reached into
knee height stage when the temperature ranged 25-28°C during February to March which was more
favorable for the growth and development of borers. September planting was the best time for hybrids,
and September as well as March planting was best time for open pollinated variety with respect to low
borer incidence in Chitwan condition.Link for e-copy: https://afu.edu.np/sites/default/files/Effect_of_planting_dates_of_maize-on-the_ [...] Efficacy of biological and chemical insecticides against diamondback moth (Plutella xylostella L.) on Cabbage (Brassica oleracea L. Var capitata) / B. Sapkota in Journal of Agriculture and Forestry University, Volume 5 (2022)
[article]
Title : Efficacy of biological and chemical insecticides against diamondback moth (Plutella xylostella L.) on Cabbage (Brassica oleracea L. Var capitata) Material Type: printed text Authors: B. Sapkota, Author ; Regmi,R., Author ; S. Tiwari, Author ; R.B Thapa, Author Publication Date: 2022 Article on page: 95-101 p. Languages : English (eng) Keywords: Bio-pesticides, cabbage, P. xylostella, management, emamectin benzoate, neemix Abstract: Diamondback moth, Plutella xylostella (L.) is the most devastating pest in late winter in cabbage (Brassica
oleracea var. capitata L.). Pesticides are the common pest management practices to manage the crucifer pests.
These practices are not sustainable and ecofriendly. Hence, a field experiment was conducted to evaluate the
efficacy of chemical, botanicals and biological insecticides todevelop safer and more effective insecticides for
the diamondback moth, in cabbage during winter season 2018-19. The experiment was laid in a randomized
block design (RCBD) with four replication and five treatments viz. i) Emamectin benzoate 5SG @ 0.4 gm/l, ii)
Neemix (Azadirachtin 300 ppm) @ 2 ml/l, iii) Metarhizium anisopliae @ 2 ml/l, iv) Beauveri abassiana @ 2 ml/l
and v) control (untreated). Standard recommended agronomic practices were followed in field to ensure better
crop growth. The maximum reduction of P. xylostella larval population over untreated control was recorded
in Emamectin benzoate 5 SG (95%) andNeemix(95%) sprayed field. Bio-pesticides such asM. anisopliae and
B. bassiana were effective only after the first spray with maximum efficacy of (76%) and (65%), respectively,
and decreased efficacy in the second and third sprays. Both yields with the least number of damaged leaves and
maximum net profit was recorded in Emamectin benzoate sprayed plots with a higher benefit-cost ratio of (3.47),
which was followed by M. anisopliae(2.96) and Neemix (2.92) treatments, respectively. Emamectin benzoate 5
SG and Neemix are effective and safe insecticides in controlling diamondback moth in cabbage crops and are
viable options for integrated management of P. xylostella.Link for e-copy: https://afu.edu.np/sites/default/files/Efficacy_of_biological_and_chemical_insec [...]
in Journal of Agriculture and Forestry University > Volume 5 (2022) . - 95-101 p.[article] Efficacy of biological and chemical insecticides against diamondback moth (Plutella xylostella L.) on Cabbage (Brassica oleracea L. Var capitata) [printed text] / B. Sapkota, Author ; Regmi,R., Author ; S. Tiwari, Author ; R.B Thapa, Author . - 2022 . - 95-101 p.
Languages : English (eng)
in Journal of Agriculture and Forestry University > Volume 5 (2022) . - 95-101 p.
Keywords: Bio-pesticides, cabbage, P. xylostella, management, emamectin benzoate, neemix Abstract: Diamondback moth, Plutella xylostella (L.) is the most devastating pest in late winter in cabbage (Brassica
oleracea var. capitata L.). Pesticides are the common pest management practices to manage the crucifer pests.
These practices are not sustainable and ecofriendly. Hence, a field experiment was conducted to evaluate the
efficacy of chemical, botanicals and biological insecticides todevelop safer and more effective insecticides for
the diamondback moth, in cabbage during winter season 2018-19. The experiment was laid in a randomized
block design (RCBD) with four replication and five treatments viz. i) Emamectin benzoate 5SG @ 0.4 gm/l, ii)
Neemix (Azadirachtin 300 ppm) @ 2 ml/l, iii) Metarhizium anisopliae @ 2 ml/l, iv) Beauveri abassiana @ 2 ml/l
and v) control (untreated). Standard recommended agronomic practices were followed in field to ensure better
crop growth. The maximum reduction of P. xylostella larval population over untreated control was recorded
in Emamectin benzoate 5 SG (95%) andNeemix(95%) sprayed field. Bio-pesticides such asM. anisopliae and
B. bassiana were effective only after the first spray with maximum efficacy of (76%) and (65%), respectively,
and decreased efficacy in the second and third sprays. Both yields with the least number of damaged leaves and
maximum net profit was recorded in Emamectin benzoate sprayed plots with a higher benefit-cost ratio of (3.47),
which was followed by M. anisopliae(2.96) and Neemix (2.92) treatments, respectively. Emamectin benzoate 5
SG and Neemix are effective and safe insecticides in controlling diamondback moth in cabbage crops and are
viable options for integrated management of P. xylostella.Link for e-copy: https://afu.edu.np/sites/default/files/Efficacy_of_biological_and_chemical_insec [...] Efficacy testing of ‘soft’ pesticides for cabbage butterfly (Pieris brassicae nepalensis Doubleday) in cauliflower at Rampur, Chitwan / H. N. Giri in Journal of Agriculture and Forestry University, Volume 4 (2020)
[article]
Title : Efficacy testing of ‘soft’ pesticides for cabbage butterfly (Pieris brassicae nepalensis Doubleday) in cauliflower at Rampur, Chitwan Material Type: printed text Authors: H. N. Giri, Author ; M. D. Sharma, Author ; R.B Thapa, Author ; B. B. Khatri, Author ; K. R. Pandey, Author Publication Date: 2020 Article on page: 177-182 p. Languages : English (eng) Keywords: Bio-pesticides, cabbage butterfly, cauliflower, Snow Mystique Abstract: Cabbage butterfly (Pieris brassicae nepalensis) is an important pest of cabbage, cauliflower, and many other crucifers.
Pesticide use is a popular method of pest management in small and large-scale vegetable farming in Nepal. These practices
are directly linked to human health, biodiversity, and the environment. There are various categories of pesticides available in
market, some are toxic, and some are ‘soft’ in nature. Chemical action of pesticides to the insect pest has been recommended
by efficacy testing. Accordingly this research was done to evaluate the effectiveness of ‘soft’ chemicals against cabbage
butterfly management. Cauliflower cultivar ‘Snow Mystique’ was used for the field experiment established at Agriculture
and Forestry University (AFU), Rampur Chitwan during November 2017 to March 2018. Six common pesticides such as
Mahashakti (Bt. based), Neemix (Azadirachtin based), Spinosad (bacteria based), Liquid manure (mixture of botanical, cow
urine and other ingredients), Superkiller-10 (Cypermethrin based), and control (no use) were used in Randomized Complete
Block Design (RCBD), each with four replication. The study findings revealed that the highest number of larval populations
of cabbage butterfly as well as damaged plants, leaves, curds, and holes were recorded in control plot, and the lowest larval
population and damages were recorded in Cypermethrin and Spinosad treated plots. On the other hand, curd height was
significantly higher (13.9 cm) in liquid manure treated plot that was similar with Spinosad treated plots. There was no
significant difference in curd diameter (23.1 cm) and biological yield (79.6 t/ha) in Spinosad and Cypermethrin treated plots.
It is thus suggested that biological pesticide, such as Spinosad are superior in controlling pests of cauliflower than other tested
pesticides. These pesticides along with other soft pesticide are potentially safer for vegetable production. This information is
important to develop IPM protocol for cabbage butterfly management in crucifers.Link for e-copy: https://afu.edu.np/sites/default/files/Efficacy%20testing%20of%20%E2%80%98soft%E [...]
in Journal of Agriculture and Forestry University > Volume 4 (2020) . - 177-182 p.[article] Efficacy testing of ‘soft’ pesticides for cabbage butterfly (Pieris brassicae nepalensis Doubleday) in cauliflower at Rampur, Chitwan [printed text] / H. N. Giri, Author ; M. D. Sharma, Author ; R.B Thapa, Author ; B. B. Khatri, Author ; K. R. Pandey, Author . - 2020 . - 177-182 p.
Languages : English (eng)
in Journal of Agriculture and Forestry University > Volume 4 (2020) . - 177-182 p.
Keywords: Bio-pesticides, cabbage butterfly, cauliflower, Snow Mystique Abstract: Cabbage butterfly (Pieris brassicae nepalensis) is an important pest of cabbage, cauliflower, and many other crucifers.
Pesticide use is a popular method of pest management in small and large-scale vegetable farming in Nepal. These practices
are directly linked to human health, biodiversity, and the environment. There are various categories of pesticides available in
market, some are toxic, and some are ‘soft’ in nature. Chemical action of pesticides to the insect pest has been recommended
by efficacy testing. Accordingly this research was done to evaluate the effectiveness of ‘soft’ chemicals against cabbage
butterfly management. Cauliflower cultivar ‘Snow Mystique’ was used for the field experiment established at Agriculture
and Forestry University (AFU), Rampur Chitwan during November 2017 to March 2018. Six common pesticides such as
Mahashakti (Bt. based), Neemix (Azadirachtin based), Spinosad (bacteria based), Liquid manure (mixture of botanical, cow
urine and other ingredients), Superkiller-10 (Cypermethrin based), and control (no use) were used in Randomized Complete
Block Design (RCBD), each with four replication. The study findings revealed that the highest number of larval populations
of cabbage butterfly as well as damaged plants, leaves, curds, and holes were recorded in control plot, and the lowest larval
population and damages were recorded in Cypermethrin and Spinosad treated plots. On the other hand, curd height was
significantly higher (13.9 cm) in liquid manure treated plot that was similar with Spinosad treated plots. There was no
significant difference in curd diameter (23.1 cm) and biological yield (79.6 t/ha) in Spinosad and Cypermethrin treated plots.
It is thus suggested that biological pesticide, such as Spinosad are superior in controlling pests of cauliflower than other tested
pesticides. These pesticides along with other soft pesticide are potentially safer for vegetable production. This information is
important to develop IPM protocol for cabbage butterfly management in crucifers.Link for e-copy: https://afu.edu.np/sites/default/files/Efficacy%20testing%20of%20%E2%80%98soft%E [...] Farmers’ perception on climate change and maize cultivation in relation to insect diversity across the altitudinal gradient of Nepal / G. S. Bhandari in Journal of Agriculture and Forestry University, Volume 3 (2019)PermalinkIAAS Research Advances / R.B ThapaPermalinkIAAS Research Advances / R.B ThapaPermalinkLaboratory bioassay of fall armyworm (Spodoptera frugiperda) larva using various insecticides / S. Sharma in Journal of Agriculture and Forestry University, Volume 5 (2022)PermalinkProbit and Logit analysis: Multiple observations over time at various concentrations of biopesticide Metarhizium anisopliae strain / T. N. Bhusal in Journal of Agriculture and Forestry University, Volume 4 (2020)PermalinkProceedings of the stakeholders workshops on prioritization of research towards commercialization of agriculture in Chitwan / R.B ThapaPermalinkProceedings of the stakeholdres workshops on Priotization of research towards commercialization of agriculture in Chitwan and Nawalparasi districts / R.B ThapaPermalinkProceedings of the Workshops on conservation and management of pollinatiors for sustainable agriculture through an ecosystem approach : Global Pollinator project activities / R.B ThapaPermalinkValidating technical performance of micro-hydropower plants in Nepal / R.B Thapa in Journal of Agriculture and Forestry University, Volume 3 (2019)PermalinkValue chain analysis of orthodox tea: Evidence from Ilam district of Nepal. / K. B. Adhikari in Journal of Agriculture and Forestry University, Volume 1 (2017)Permalink