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Available articles
Status of Tomato Yellow Leaf Curl Virus in Tomato in the Western Hills of Nepal / Ghimire, S.R. in Nepal Agriculture Research Journal, Vol. 4 (2000/2001)
Title : Status of Tomato Yellow Leaf Curl Virus in Tomato in the Western Hills of Nepal Material Type: printed text Authors: Ghimire, S.R., Author ; Subedi, Phul Prasad, Author ; Green, S.K., Author Publication Date: 2000 Article on page: 1-4 p Languages : English (eng) Keywords: Bemisia tabaci, Lycopersicon esculentum, tomato, yellow leaf curl virus, whitefly Abstract: Tomato cultivation in rainy season is being endangered and is becoming less profitable because of
tomato yellow leaf curl virus (TYLCV) infection. Studies were conducted at Agriculture Research
Station, Lumle to assess the incidence of TYLCV and associated yield losses in various
commercial tomato growing pockets of the western hills during the period of 1995 and 1997. The
studies revealed a high incidence of the disease in most tomato growing pockets and yield losses
of 40% or even higher have been reported in some areas like Risingpatan, Tanahun and Kudule, of
western hills of Nepal. Laboratory analysis of the diseased samples by Asian Vegetable Research
and Development Center revealed the presence of three different strains of TYLCV: Banglore I,
Banglore II and Sri Lanka in the western hills. The TYLCV vector, whitefly (Bemisia tabaci
Gen.), was found active throughout the crop growing period in some commercial tomato growing
pockets. Therefore, research on the development of effective TYLCV management technology is
needed to sustain rainy season tomato cultivation in the western hills of Nepal.Link for e-copy: http://elibrary.narc.gov.np/?r=85
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 1-4 p[article] Status of Tomato Yellow Leaf Curl Virus in Tomato in the Western Hills of Nepal [printed text] / Ghimire, S.R., Author ; Subedi, Phul Prasad, Author ; Green, S.K., Author . - 2000 . - 1-4 p.
Languages : English (eng)
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 1-4 p
Keywords: Bemisia tabaci, Lycopersicon esculentum, tomato, yellow leaf curl virus, whitefly Abstract: Tomato cultivation in rainy season is being endangered and is becoming less profitable because of
tomato yellow leaf curl virus (TYLCV) infection. Studies were conducted at Agriculture Research
Station, Lumle to assess the incidence of TYLCV and associated yield losses in various
commercial tomato growing pockets of the western hills during the period of 1995 and 1997. The
studies revealed a high incidence of the disease in most tomato growing pockets and yield losses
of 40% or even higher have been reported in some areas like Risingpatan, Tanahun and Kudule, of
western hills of Nepal. Laboratory analysis of the diseased samples by Asian Vegetable Research
and Development Center revealed the presence of three different strains of TYLCV: Banglore I,
Banglore II and Sri Lanka in the western hills. The TYLCV vector, whitefly (Bemisia tabaci
Gen.), was found active throughout the crop growing period in some commercial tomato growing
pockets. Therefore, research on the development of effective TYLCV management technology is
needed to sustain rainy season tomato cultivation in the western hills of Nepal.Link for e-copy: http://elibrary.narc.gov.np/?r=85
Title : Heterosis for Yield and Yield Components in Rice Material Type: printed text Authors: Joshi, Bal K., Author Publication Date: 2000 Article on page: 6-13 p. Languages : English (eng) Keywords: F1, heterobeltiosis, hybrid vigor, Oryza sativa, standard heterosis Abstract: It is important to know the degree and direction of hybrid vigor for its commercial exploitation.
Heterobeltiosis and standard heterosis were studied in 14 crosses between rice (Oryza sativa L.)
cultivars (improved and landraces) and three wild aborted male sterile parents. These crosses
showed marked variations in the expression of heterobeltiosis and standard heterosis for yield and
yield components. Grain yield manifested highly significant heterobeltiosis and standard heterosis
in five crosses. Heterobeltiosis ranging from –55 to 139% and standard heterosis from –11 to
369% were observed. Highest heterotic effect among the yield components was for panicle
number plant-1 followed by spikelet number and panicle length. With appropriate choice of
parental lines, it is possible to develop F1 rice hybrid possessing distinct yield superiority over the
best-inbred lines.Link for e-copy: http://elibrary.narc.gov.np/?r=86
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 6-13 p.[article] Heterosis for Yield and Yield Components in Rice [printed text] / Joshi, Bal K., Author . - 2000 . - 6-13 p.
Languages : English (eng)
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 6-13 p.
Keywords: F1, heterobeltiosis, hybrid vigor, Oryza sativa, standard heterosis Abstract: It is important to know the degree and direction of hybrid vigor for its commercial exploitation.
Heterobeltiosis and standard heterosis were studied in 14 crosses between rice (Oryza sativa L.)
cultivars (improved and landraces) and three wild aborted male sterile parents. These crosses
showed marked variations in the expression of heterobeltiosis and standard heterosis for yield and
yield components. Grain yield manifested highly significant heterobeltiosis and standard heterosis
in five crosses. Heterobeltiosis ranging from –55 to 139% and standard heterosis from –11 to
369% were observed. Highest heterotic effect among the yield components was for panicle
number plant-1 followed by spikelet number and panicle length. With appropriate choice of
parental lines, it is possible to develop F1 rice hybrid possessing distinct yield superiority over the
best-inbred lines.Link for e-copy: http://elibrary.narc.gov.np/?r=86
Title : Response of Rice Varieties to Age of Seedlings and Transplanting Dates Material Type: printed text Authors: Mishri L. Shah, Author ; Rambaran Yadav, Author Publication Date: 2000 Article on page: 14-17 p Languages : English (eng) Keywords: Age of seedlings, rice, transplanting dates Abstract: A field experiment was conducted at Regional Agricultural Research Station, Parwanipur in
1998/99 and 1999/00 with an aim to find out the alternate management practices to compensate
the loss in the grain yield due to flood. Irrespective of the varieties and transplanting dates, age of
seedlings had no effect on grain yield of rice. But transplanting dates had significant effect on
grain and grain contributing characters. The yield of rice transplanted at 1 Sept was 25.6 and
37.5% less in 1998/99 and 1999/00 respectively as compared to rice grain yield of 14 July
transplanting. Radha 11 registered the highest grain yield of 4086 kg ha-1 in 1999/00 and 2662 kg
ha-1 in 1998/99, which was at par to the yield obtained by Sabitri at the same year. The interaction
effect of the age of seedlings, transplanting dates and varieties were found significant in both the
years. 25 days old seedlings transplanted on 14 July in 1999/00 of rice varieties Masuli and Radha
11, produced statistically the similar yield. Radha 11 was the best among the tested varieties. 25
days old seedlings of Masuli, Basmati, Sabitri and Radha 11 can be recommended to transplant as
late as Sept 1.Link for e-copy: http://elibrary.narc.gov.np/?r=87
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 14-17 p[article] Response of Rice Varieties to Age of Seedlings and Transplanting Dates [printed text] / Mishri L. Shah, Author ; Rambaran Yadav, Author . - 2000 . - 14-17 p.
Languages : English (eng)
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 14-17 p
Keywords: Age of seedlings, rice, transplanting dates Abstract: A field experiment was conducted at Regional Agricultural Research Station, Parwanipur in
1998/99 and 1999/00 with an aim to find out the alternate management practices to compensate
the loss in the grain yield due to flood. Irrespective of the varieties and transplanting dates, age of
seedlings had no effect on grain yield of rice. But transplanting dates had significant effect on
grain and grain contributing characters. The yield of rice transplanted at 1 Sept was 25.6 and
37.5% less in 1998/99 and 1999/00 respectively as compared to rice grain yield of 14 July
transplanting. Radha 11 registered the highest grain yield of 4086 kg ha-1 in 1999/00 and 2662 kg
ha-1 in 1998/99, which was at par to the yield obtained by Sabitri at the same year. The interaction
effect of the age of seedlings, transplanting dates and varieties were found significant in both the
years. 25 days old seedlings transplanted on 14 July in 1999/00 of rice varieties Masuli and Radha
11, produced statistically the similar yield. Radha 11 was the best among the tested varieties. 25
days old seedlings of Masuli, Basmati, Sabitri and Radha 11 can be recommended to transplant as
late as Sept 1.Link for e-copy: http://elibrary.narc.gov.np/?r=87
Title : Honeybee Flora at Kabre, Dolakha District Material Type: printed text Authors: Bista, S., Author ; Shivakoti, Gopal P., Author Publication Date: 2000 Article on page: 18-25 p. Languages : English (eng) Keywords: Apis cerana, bee flora, keeping, dearth period, honey flow Abstract: Adequate knowledge about bee flora is the prerequisite to initiate bee keeping. A study was
conducted at Kabre area of Dolakha district during 1997-1999 to identify existing bee flora and
develop a floral calendar. Based on the interview with bee farmers and visual observations, 119
important plant species were recorded, out of which 47 species were found major sources for
honeybees. Spring season (mid-March to mid-June) and autumn season (mid-Sept to Oct) were
identified as honey flow periods having a number of floral plants such as Guizotia abyssinica,
Fraxinus floribunda, Prunus cerasoides, Pyrus communis, Castanopsis indica, Brassica spp.,
Citrus spp., Berberis spp., Rubus spp., Rhododendron spp. and Trifolium spp. Winter season (mid-
Nov to Feb) is the critical dearth period with a few flowering plants like Reinwardtia indica,
Pogestemon glaber, Caesalpinia spp. and Eupatorium spp. Depending upon the climatic
conditions, possibility of planting multipurpose plants has been discussed. Based on available
flora, major characteristics of these plant species, utility status and flowering duration a bee floral
calendar was developed for Kabre. To conserve these floras, attention must be made to maintain
and multiply the existing flora.Link for e-copy: http://elibrary.narc.gov.np/?r=88
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 18-25 p.[article] Honeybee Flora at Kabre, Dolakha District [printed text] / Bista, S., Author ; Shivakoti, Gopal P., Author . - 2000 . - 18-25 p.
Languages : English (eng)
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 18-25 p.
Keywords: Apis cerana, bee flora, keeping, dearth period, honey flow Abstract: Adequate knowledge about bee flora is the prerequisite to initiate bee keeping. A study was
conducted at Kabre area of Dolakha district during 1997-1999 to identify existing bee flora and
develop a floral calendar. Based on the interview with bee farmers and visual observations, 119
important plant species were recorded, out of which 47 species were found major sources for
honeybees. Spring season (mid-March to mid-June) and autumn season (mid-Sept to Oct) were
identified as honey flow periods having a number of floral plants such as Guizotia abyssinica,
Fraxinus floribunda, Prunus cerasoides, Pyrus communis, Castanopsis indica, Brassica spp.,
Citrus spp., Berberis spp., Rubus spp., Rhododendron spp. and Trifolium spp. Winter season (mid-
Nov to Feb) is the critical dearth period with a few flowering plants like Reinwardtia indica,
Pogestemon glaber, Caesalpinia spp. and Eupatorium spp. Depending upon the climatic
conditions, possibility of planting multipurpose plants has been discussed. Based on available
flora, major characteristics of these plant species, utility status and flowering duration a bee floral
calendar was developed for Kabre. To conserve these floras, attention must be made to maintain
and multiply the existing flora.Link for e-copy: http://elibrary.narc.gov.np/?r=88
Title : Use of Botanicals for the Management of Pulse Beetle (Callosobruchus maculatus F.) in Lentil Material Type: printed text Authors: Paneru, Ram Babu, Author ; Shivakoti, Gopal P., Author Publication Date: 2000 Article on page: 27-30 p Languages : English (eng) Keywords: Botanicals, Callosobruchus maculates, lentil, pulse beetle Abstract: Some plant materials, sweet flag (Acorus calamus), goat weed (Ageratum conyzoids), lantana
(Lantana camara), Indian privet (Vitex negundo), mug-wort (Artimisia vulgaris), chinaberry
(Melia azederach), rice husk ash, mustard (Brassica spp.) oil and neem (Azadirechta indica) oil
were evaluated for their effects against pulse beetle (Callosobruchus maculatus F.). The powder or
oil from the above plant materials were thoroughly admixed at the rate of 0.5, 1 and 2% w/w or
v/w with lentil grains. Randomly selected 25 pulse beetle adults were exposed to the grains for
each concentration of the main treatment. Rhizome powder of sweet flag, rice husk ash and
mustard oil showed a significant effect in killing the pulse beetle within a week at 0.5, 1 and 2%
concentrations. Neem oil was found very effective with 100% mortality of the beetle within two
days. Other tested materials also showed insect killing properties but the effect was comparatively
lower than that of sweet flag rhizome powder, mustard oil, neem oil and rice husk ash.Link for e-copy: http://elibrary.narc.gov.np/?r=89
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 27-30 p[article] Use of Botanicals for the Management of Pulse Beetle (Callosobruchus maculatus F.) in Lentil [printed text] / Paneru, Ram Babu, Author ; Shivakoti, Gopal P., Author . - 2000 . - 27-30 p.
Languages : English (eng)
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 27-30 p
Keywords: Botanicals, Callosobruchus maculates, lentil, pulse beetle Abstract: Some plant materials, sweet flag (Acorus calamus), goat weed (Ageratum conyzoids), lantana
(Lantana camara), Indian privet (Vitex negundo), mug-wort (Artimisia vulgaris), chinaberry
(Melia azederach), rice husk ash, mustard (Brassica spp.) oil and neem (Azadirechta indica) oil
were evaluated for their effects against pulse beetle (Callosobruchus maculatus F.). The powder or
oil from the above plant materials were thoroughly admixed at the rate of 0.5, 1 and 2% w/w or
v/w with lentil grains. Randomly selected 25 pulse beetle adults were exposed to the grains for
each concentration of the main treatment. Rhizome powder of sweet flag, rice husk ash and
mustard oil showed a significant effect in killing the pulse beetle within a week at 0.5, 1 and 2%
concentrations. Neem oil was found very effective with 100% mortality of the beetle within two
days. Other tested materials also showed insect killing properties but the effect was comparatively
lower than that of sweet flag rhizome powder, mustard oil, neem oil and rice husk ash.Link for e-copy: http://elibrary.narc.gov.np/?r=89
Title : Sustaining Wheat Productivity and Maintaining Soil Fertility in Maize- Wheat System Material Type: printed text Authors: Tripathi, B.P., Author ; Tuladhar, J.K., Author Publication Date: 2000 Article on page: 31-36 p Languages : English (eng) Keywords: Key words: Maize-wheat system, organic materials, soil fertility, sustainability Abstract: Field experiments on maize-wheat system were carried out in rainfed upland (bari) at Agricultural
Research Station, Lumle for three years (1994/95-1996/97) to determine the effect of different
quality organic materials on maize and wheat yields and soil properties. Wheat grain yield
significantly differed over years and the highest mean grain yield (1.98 t ha-1) was recorded in the
treatment of mixture of low and high quality organic materials (maize + leaf litter, farmyard
manure). Maize and wheat grain as well as straw yield significantly differed over years. In all the
three years, the mixture of low and high quality organic materials produced the highest grain yield
of maize plus wheat ranging from 6.72 to 2.20 t ha-1 with mean yield of 4.43 t ha-1. Mean N uptake
by wheat grain and straw ranged from 32.2 to 40.4 kg ha-1 and 13.8 to 16.0 kg ha-1, respectively in
different treatments. Similarly, mean P uptake by wheat grain was the highest (25.4 kg ha-1) in the
mixture treatment while mean P uptake by wheat straw was the highest (26.5 kg ha-1) in low
quality organic materials. Mean soil pH after wheat harvest was the lowest (5.1) in the low quality
organic material. Organic carbon and available P ranged from 3.4 to 3.7% and from 329 to 370
ppm, respectively in different treatments while total N and exchangeable K increased to 0.31%
and 0.2 me/100g, respectively with the application of low quality organic material. The three years
result showed that semi-decomposed organic materials were more efficient in improving and
stabilizing production of wheat and maize yields in maize-wheat system as well as in maintaining
N fertility than high quality organic materials.Link for e-copy: http://elibrary.narc.gov.np/?r=90
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 31-36 p[article] Sustaining Wheat Productivity and Maintaining Soil Fertility in Maize- Wheat System [printed text] / Tripathi, B.P., Author ; Tuladhar, J.K., Author . - 2000 . - 31-36 p.
Languages : English (eng)
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 31-36 p
Keywords: Key words: Maize-wheat system, organic materials, soil fertility, sustainability Abstract: Field experiments on maize-wheat system were carried out in rainfed upland (bari) at Agricultural
Research Station, Lumle for three years (1994/95-1996/97) to determine the effect of different
quality organic materials on maize and wheat yields and soil properties. Wheat grain yield
significantly differed over years and the highest mean grain yield (1.98 t ha-1) was recorded in the
treatment of mixture of low and high quality organic materials (maize + leaf litter, farmyard
manure). Maize and wheat grain as well as straw yield significantly differed over years. In all the
three years, the mixture of low and high quality organic materials produced the highest grain yield
of maize plus wheat ranging from 6.72 to 2.20 t ha-1 with mean yield of 4.43 t ha-1. Mean N uptake
by wheat grain and straw ranged from 32.2 to 40.4 kg ha-1 and 13.8 to 16.0 kg ha-1, respectively in
different treatments. Similarly, mean P uptake by wheat grain was the highest (25.4 kg ha-1) in the
mixture treatment while mean P uptake by wheat straw was the highest (26.5 kg ha-1) in low
quality organic materials. Mean soil pH after wheat harvest was the lowest (5.1) in the low quality
organic material. Organic carbon and available P ranged from 3.4 to 3.7% and from 329 to 370
ppm, respectively in different treatments while total N and exchangeable K increased to 0.31%
and 0.2 me/100g, respectively with the application of low quality organic material. The three years
result showed that semi-decomposed organic materials were more efficient in improving and
stabilizing production of wheat and maize yields in maize-wheat system as well as in maintaining
N fertility than high quality organic materials.Link for e-copy: http://elibrary.narc.gov.np/?r=90
Title : Management of Botrytis Gray Mold (Botrytis cinerea Pers. Ex. Fr.) of Chickpea at Tarahara, Nepal Material Type: printed text Authors: Prem C.P. Chaurasia, Author ; Sharada Joshi, Author Publication Date: 2000 Article on page: 37-41 p Languages : English (eng) Keywords: Key words: Botrytis gray mold, chickpea, Trichoderma Abstract: An experiment was conducted in randomized complete block design with six treatments and four
replications at loamy soil of Regional Agriculture Research Station, Tarahara, Nepal during
1997/98 and1998/99 seasons to find out the effect of bioagent Trichoderma viride as compared to
fungicide Bavistin (carbendazim) for management of Botrytis gray mold (Botrytis cinerea) of
chickpea (Cicer arietinum). Treatments were use of water spray (check), three sprays of T. viride
(10 7-108 spores/ml of water), three sprays of Bavistin @ 0.2%, three sprays of Bavistin @ 0.1%
+ T. viride, two sprays of Bavistin @ 0.2% and two sprays of T.viride. The area under the disease
progress curve (AUDPC) was the least (193.6) with three sprays of Bavistin (0.2%) followed by
two sprays of Bavistin (0.2%) and three sprays of Bavistin + T. viride (216.9). The highest mean
grain yield of 267.3 kg ha-1 was produced by three sprays of Bavistin + T. viride followed by
three sprays of Bavistin. Three sprays of T. viride was inferior to three and two sprays of Bavistin
but it was at par with two sprays of T. viride with respect to grain yield production and reduction
of Botrytis gray mold severity. When AUDPC was regressed against grain yield, a negative
correlation was obtained between the disease and the grain yield. The correlation coefficients for
the disease and yields during1997/98 and 1998/99 respectively were -0.583, and - 0.490.Link for e-copy: http://elibrary.narc.gov.np/?r=91
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 37-41 p[article] Management of Botrytis Gray Mold (Botrytis cinerea Pers. Ex. Fr.) of Chickpea at Tarahara, Nepal [printed text] / Prem C.P. Chaurasia, Author ; Sharada Joshi, Author . - 2000 . - 37-41 p.
Languages : English (eng)
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 37-41 p
Keywords: Key words: Botrytis gray mold, chickpea, Trichoderma Abstract: An experiment was conducted in randomized complete block design with six treatments and four
replications at loamy soil of Regional Agriculture Research Station, Tarahara, Nepal during
1997/98 and1998/99 seasons to find out the effect of bioagent Trichoderma viride as compared to
fungicide Bavistin (carbendazim) for management of Botrytis gray mold (Botrytis cinerea) of
chickpea (Cicer arietinum). Treatments were use of water spray (check), three sprays of T. viride
(10 7-108 spores/ml of water), three sprays of Bavistin @ 0.2%, three sprays of Bavistin @ 0.1%
+ T. viride, two sprays of Bavistin @ 0.2% and two sprays of T.viride. The area under the disease
progress curve (AUDPC) was the least (193.6) with three sprays of Bavistin (0.2%) followed by
two sprays of Bavistin (0.2%) and three sprays of Bavistin + T. viride (216.9). The highest mean
grain yield of 267.3 kg ha-1 was produced by three sprays of Bavistin + T. viride followed by
three sprays of Bavistin. Three sprays of T. viride was inferior to three and two sprays of Bavistin
but it was at par with two sprays of T. viride with respect to grain yield production and reduction
of Botrytis gray mold severity. When AUDPC was regressed against grain yield, a negative
correlation was obtained between the disease and the grain yield. The correlation coefficients for
the disease and yields during1997/98 and 1998/99 respectively were -0.583, and - 0.490.Link for e-copy: http://elibrary.narc.gov.np/?r=91
Title : Characteristics of Ralstonia Solanacearum Strains of Potato Wilt Disease from Nepal and Thailand Material Type: printed text Authors: Dhital, S.P., Author ; N. Thaveechai, Author ; Sundar K. Shrestha, Author Publication Date: 2000 Article on page: 42-47 p Languages : English (eng) Keywords: Key words: Bacterial wilt, potato, Pseudomonas solanacearum, Ralstonia solanacearum Abstract: Characterization of strains of Ralstonia solanacearum, the causal agent of potato bacterial wilt
disease from Nepal and Thailand was performed based on pathogenicity,
biochemical/physiological and serological tests. Fifteen R. solanacearum strains isolated from wilt
infected potato plants and tubers grown in Nepal were characterized as race 3, biovar II based on
the pathogenicity on different host plants, hypersensitive reaction on tobacco leaf and utilization of
some sugars. Results of pathogenicity test show that all strains from Nepal had limited host range.
Degree of virulence of all strains varied from high to medium in potato and tomato and medium to
low in eggplant. They did not cause wilting in tobacco, pepper and peanut plants. Six strains from
Thailand were characterized as biovar II and III. Additionally, comparisons on the physiological,
biological and serological characters of seven strains from Nepal and six from Thailand revealed
similar characters. Race 3 and biovar II of the pathogen was widely spread over potato growing
areas of mid and high hills of Nepal. Both biovars II and III were prevalent in the potato growing
areas of Thailand but biovar III was the most dominating one.Link for e-copy: http://elibrary.narc.gov.np/?r=92
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 42-47 p[article] Characteristics of Ralstonia Solanacearum Strains of Potato Wilt Disease from Nepal and Thailand [printed text] / Dhital, S.P., Author ; N. Thaveechai, Author ; Sundar K. Shrestha, Author . - 2000 . - 42-47 p.
Languages : English (eng)
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 42-47 p
Keywords: Key words: Bacterial wilt, potato, Pseudomonas solanacearum, Ralstonia solanacearum Abstract: Characterization of strains of Ralstonia solanacearum, the causal agent of potato bacterial wilt
disease from Nepal and Thailand was performed based on pathogenicity,
biochemical/physiological and serological tests. Fifteen R. solanacearum strains isolated from wilt
infected potato plants and tubers grown in Nepal were characterized as race 3, biovar II based on
the pathogenicity on different host plants, hypersensitive reaction on tobacco leaf and utilization of
some sugars. Results of pathogenicity test show that all strains from Nepal had limited host range.
Degree of virulence of all strains varied from high to medium in potato and tomato and medium to
low in eggplant. They did not cause wilting in tobacco, pepper and peanut plants. Six strains from
Thailand were characterized as biovar II and III. Additionally, comparisons on the physiological,
biological and serological characters of seven strains from Nepal and six from Thailand revealed
similar characters. Race 3 and biovar II of the pathogen was widely spread over potato growing
areas of mid and high hills of Nepal. Both biovars II and III were prevalent in the potato growing
areas of Thailand but biovar III was the most dominating one.Link for e-copy: http://elibrary.narc.gov.np/?r=92
Title : Plant Spacing: A Key Husbandry Practice for Rainy Season Cabbage Production Material Type: printed text Authors: Khatiwada, P.P., Author Publication Date: 2000 Article on page: 48-55 p Languages : English (eng) Keywords: Cabbage, hybrid, plant spacing, rainy season Abstract: A field experiment was accomplished to establish appropriate plant spacing for summer season
cabbage production in the rain fed condition of the high hills of eastern Nepal. The experiment
was conducted during the summer of 1997, 1998 and 1999. Five different plant spacings (45-
60-cm, 45- 50-cm, 45- 40-cm, 45- 30-cm and 45- 20-cm) and two varieties, Green Stone
and Green Coronet were tested. The interactive effect between variety and spacing was nonsignificant.
However, among the tested spacings, head yields were statistically higher at 45- 30-
cm and 45- 20-cm plant spacings. There was a positive linear correlation between closer plant
spacing and cabbage head yield. The number of unmarketable heads and the lowest head
compactness was recorded in 45- 20-cm spacing. Spacing of 45- 30-cm was found more
economical. Plant population can be maintained as high as 74,074 number ha-1 by decreasing the
spacing from 75- 60-cm to 45- 30-cm for the rainy season cabbage cultivation in high hills. By
using this spacing, as high as 35 t ha-1 cabbage head can be produced in the rainfed condition of
the high hills.Link for e-copy: http://elibrary.narc.gov.np/?r=93
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 48-55 p[article] Plant Spacing: A Key Husbandry Practice for Rainy Season Cabbage Production [printed text] / Khatiwada, P.P., Author . - 2000 . - 48-55 p.
Languages : English (eng)
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 48-55 p
Keywords: Cabbage, hybrid, plant spacing, rainy season Abstract: A field experiment was accomplished to establish appropriate plant spacing for summer season
cabbage production in the rain fed condition of the high hills of eastern Nepal. The experiment
was conducted during the summer of 1997, 1998 and 1999. Five different plant spacings (45-
60-cm, 45- 50-cm, 45- 40-cm, 45- 30-cm and 45- 20-cm) and two varieties, Green Stone
and Green Coronet were tested. The interactive effect between variety and spacing was nonsignificant.
However, among the tested spacings, head yields were statistically higher at 45- 30-
cm and 45- 20-cm plant spacings. There was a positive linear correlation between closer plant
spacing and cabbage head yield. The number of unmarketable heads and the lowest head
compactness was recorded in 45- 20-cm spacing. Spacing of 45- 30-cm was found more
economical. Plant population can be maintained as high as 74,074 number ha-1 by decreasing the
spacing from 75- 60-cm to 45- 30-cm for the rainy season cabbage cultivation in high hills. By
using this spacing, as high as 35 t ha-1 cabbage head can be produced in the rainfed condition of
the high hills.Link for e-copy: http://elibrary.narc.gov.np/?r=93
Title : Genetic Variability and Heritability in Sugarcane Material Type: printed text Authors: Chaudhary, R.R., Author Publication Date: 2000 Article on page: 56-59 p Languages : English (eng) Keywords: Genetic advance, genetic variability, heritability, sugarcane Abstract: Thirty-two genotypes were evaluated in a replicated trial at Sugarcane Research Program, Jitpur,
Bara, Nepal in 2000-2001 to estimate phenotypic and genotypic coefficients of variation,
heritability and genetic advance for seven stalk characters in sugarcane (Saccharum officinarum
L). Analysis of variance revealed highly significant differences between genotypes for all the
characters studied. Genotypic variance was higher than environmental one for cane yield, millable
cane number, single cane weight, stalk diameter and stalk length. A single cane weight,
germination at 45 days after planting and millable cane number had high genotypic and
phenotypic coefficients of variation. High heritability estimates were recorded for millable cane
number, stalk diameter and single cane weight. Maximum genetic gain as percent of mean was
observed for single cane weight and millable cane number.Link for e-copy: http://elibrary.narc.gov.np/?r=94
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 56-59 p[article] Genetic Variability and Heritability in Sugarcane [printed text] / Chaudhary, R.R., Author . - 2000 . - 56-59 p.
Languages : English (eng)
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 56-59 p
Keywords: Genetic advance, genetic variability, heritability, sugarcane Abstract: Thirty-two genotypes were evaluated in a replicated trial at Sugarcane Research Program, Jitpur,
Bara, Nepal in 2000-2001 to estimate phenotypic and genotypic coefficients of variation,
heritability and genetic advance for seven stalk characters in sugarcane (Saccharum officinarum
L). Analysis of variance revealed highly significant differences between genotypes for all the
characters studied. Genotypic variance was higher than environmental one for cane yield, millable
cane number, single cane weight, stalk diameter and stalk length. A single cane weight,
germination at 45 days after planting and millable cane number had high genotypic and
phenotypic coefficients of variation. High heritability estimates were recorded for millable cane
number, stalk diameter and single cane weight. Maximum genetic gain as percent of mean was
observed for single cane weight and millable cane number.Link for e-copy: http://elibrary.narc.gov.np/?r=94
Title : Effect of Different Feed Ingredients on the Growth of Caged Common Carp Material Type: printed text Authors: Rai, Ash Kumar, Author ; Jaya D. Bista, Author Publication Date: 2000 Article on page: 60-63 p Languages : English (eng) Keywords: Cage fish culture, common carp, feed ingredients Abstract: To know the effect of four different fish feed, nine months old common carp about 47 g size were
stocked at the stocking density of 12 fish m-3 in the cages and cultured in Lake Phewa for 175
days. Four different feed ingredients used were fish meal + soybean + oil cake + rice bran + wheat
flour, fish meal + oil cake + rice bran + wheat flour, soybean + oil cake + rice bran + wheat flour
and commercial cattle feed. The crude protein ranges from 23 to 32.2%. 32.2% protein content
feed containing ingredients of fish meal + soybean + oil cake + rice bran + wheat flour was better
for the fish growth (0.30 g day-1) but was the lowest survival rate (65.4%) followed by 27.1%
protein content feed containing fish meal + oil cake + rice bran + wheat flour (0.23 g day-1). 26.2%
protein content feed containing soybean + oil cake + rice bran + wheat flour without animal
protein was the poorest growth rate (0.17 g day-1) with the highest survival rate (95.7%) among the
tested feed. It was observed that feed with higher protein level was better for the fish growth and
the growth of the fish was different significantly among the treatments except the treatment fish
meal + oil cake + rice bran + wheat flour and commercial cattle feed. The common carp fish
cultured in cages through artificial feed was not satisfactory. It digs and burrows the pond
embankments and sides in search of organic matter that makes pond turbid.Link for e-copy: http://elibrary.narc.gov.np/?r=95
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 60-63 p[article] Effect of Different Feed Ingredients on the Growth of Caged Common Carp [printed text] / Rai, Ash Kumar, Author ; Jaya D. Bista, Author . - 2000 . - 60-63 p.
Languages : English (eng)
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 60-63 p
Keywords: Cage fish culture, common carp, feed ingredients Abstract: To know the effect of four different fish feed, nine months old common carp about 47 g size were
stocked at the stocking density of 12 fish m-3 in the cages and cultured in Lake Phewa for 175
days. Four different feed ingredients used were fish meal + soybean + oil cake + rice bran + wheat
flour, fish meal + oil cake + rice bran + wheat flour, soybean + oil cake + rice bran + wheat flour
and commercial cattle feed. The crude protein ranges from 23 to 32.2%. 32.2% protein content
feed containing ingredients of fish meal + soybean + oil cake + rice bran + wheat flour was better
for the fish growth (0.30 g day-1) but was the lowest survival rate (65.4%) followed by 27.1%
protein content feed containing fish meal + oil cake + rice bran + wheat flour (0.23 g day-1). 26.2%
protein content feed containing soybean + oil cake + rice bran + wheat flour without animal
protein was the poorest growth rate (0.17 g day-1) with the highest survival rate (95.7%) among the
tested feed. It was observed that feed with higher protein level was better for the fish growth and
the growth of the fish was different significantly among the treatments except the treatment fish
meal + oil cake + rice bran + wheat flour and commercial cattle feed. The common carp fish
cultured in cages through artificial feed was not satisfactory. It digs and burrows the pond
embankments and sides in search of organic matter that makes pond turbid.Link for e-copy: http://elibrary.narc.gov.np/?r=95
Title : Pathogenic Variability in Pigeonpea Wilt Pathogen Fusarium udum Butler in Nepal Material Type: printed text Authors: Sharada Joshi, Author Publication Date: 2000 Article on page: 64-65 p General note: Research communication Languages : English (eng) Link for e-copy: http://elibrary.narc.gov.np/?r=96
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 64-65 p[article] Pathogenic Variability in Pigeonpea Wilt Pathogen Fusarium udum Butler in Nepal [printed text] / Sharada Joshi, Author . - 2000 . - 64-65 p.
Research communication
Languages : English (eng)
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 64-65 p
Link for e-copy: http://elibrary.narc.gov.np/?r=96
Title : Antibiotic Resistance: A Concern to Veterinary and Human Medicine Material Type: printed text Authors: Aryal, S.R., Author Publication Date: 2000 Article on page: 66-70 p General note: Review article Languages : English (eng) Keywords: Antibiotic resistance, bacteria, extrachromosomal material, R-plasmids Abstract: Bacterial resistance to antibiotics occurs even without the use of antibiotics. Antibiotic use exerts a
selective pressure to the bacterial flora that help in the emergence and development of antibiotic
resistance. Antibiotics are used worldwide both in veterinary and human medicine. The wide
spread use of antibiotics in human and animal has raised the concern about the development of
resistant and multi resistant bacteria that possess a potential danger to animals and men, as
resistance may cause treatment failure. Resistance may be natural or acquired. Acquired resistance
is due to transfer of extrachromosomal genetic material (R-plasmids) and is very important. The
R-plasmids are spread to other bacterial cells by transformation, transduction, conjugation and
transposition. Transmitted antibiotic resistance in disease causing bacteria may cause zoonotic
infections and resistant non-infectious bacteria may serve as a reservoir of R- plasmids for the
pathogenic organism(s). This paper highlights the mechanism of development of resistance in
bacteria and means to minimize it.Link for e-copy: http://elibrary.narc.gov.np/?r=97
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 66-70 p[article] Antibiotic Resistance: A Concern to Veterinary and Human Medicine [printed text] / Aryal, S.R., Author . - 2000 . - 66-70 p.
Review article
Languages : English (eng)
in Nepal Agriculture Research Journal > Vol. 4 (2000/2001) . - 66-70 p
Keywords: Antibiotic resistance, bacteria, extrachromosomal material, R-plasmids Abstract: Bacterial resistance to antibiotics occurs even without the use of antibiotics. Antibiotic use exerts a
selective pressure to the bacterial flora that help in the emergence and development of antibiotic
resistance. Antibiotics are used worldwide both in veterinary and human medicine. The wide
spread use of antibiotics in human and animal has raised the concern about the development of
resistant and multi resistant bacteria that possess a potential danger to animals and men, as
resistance may cause treatment failure. Resistance may be natural or acquired. Acquired resistance
is due to transfer of extrachromosomal genetic material (R-plasmids) and is very important. The
R-plasmids are spread to other bacterial cells by transformation, transduction, conjugation and
transposition. Transmitted antibiotic resistance in disease causing bacteria may cause zoonotic
infections and resistant non-infectious bacteria may serve as a reservoir of R- plasmids for the
pathogenic organism(s). This paper highlights the mechanism of development of resistance in
bacteria and means to minimize it.Link for e-copy: http://elibrary.narc.gov.np/?r=97
