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3 result(s) search for keyword(s) 'agent'
in Agricultural research for poverty alleviation and livelihood enhancement. Proceedings of the 3rd SAS-N Convention 27-29 August 2008, Lalitpur / Paudyal, Krishna Prasad
Title : Identification of bacterial isolates collected from fresh water fish Material Type: printed text Authors: Prasad, S., Author ; Rayamajhi, A., Author Pagination: 369-372 p. Languages : English (eng) Keywords: Aeromonas hydrophila, bacterial isolates, causative agent Abstract: Bacterial diseases are among the most important and common problems faced by aquaculturist worldwide. Identification and treatment of causative agent based on gross sign are sometimes not very effective because several isolates of the pathogens are associated with other aquatic vertebrate diseases. In this study, bacterial isolates were isolated from two different places, FRD Godawari and FRC Pokhara and diagnosed by obtaining pure culture followed by phenotypic test (morphological, physiological and biochemical test) and compared with existing diagnostic scheme. Based on certain uniformity such as Gram-negative and positive reactions for catalase, oxidase and fermentative reaction on glucose enables to identify the isolates, Aeromonas hydrophila. Some sugar utilization and decarboxylase test showed differences in strains of Aeromonas hydrophila.
Link for e-copy: http://elibrary.narc.gov.np/?r=1554 Identification of bacterial isolates collected from fresh water fish [printed text] / Prasad, S., Author ; Rayamajhi, A., Author . - [s.d.] . - 369-372 p.
in Agricultural research for poverty alleviation and livelihood enhancement. Proceedings of the 3rd SAS-N Convention 27-29 August 2008, Lalitpur / Paudyal, Krishna Prasad
Languages : English (eng)
Keywords: Aeromonas hydrophila, bacterial isolates, causative agent Abstract: Bacterial diseases are among the most important and common problems faced by aquaculturist worldwide. Identification and treatment of causative agent based on gross sign are sometimes not very effective because several isolates of the pathogens are associated with other aquatic vertebrate diseases. In this study, bacterial isolates were isolated from two different places, FRD Godawari and FRC Pokhara and diagnosed by obtaining pure culture followed by phenotypic test (morphological, physiological and biochemical test) and compared with existing diagnostic scheme. Based on certain uniformity such as Gram-negative and positive reactions for catalase, oxidase and fermentative reaction on glucose enables to identify the isolates, Aeromonas hydrophila. Some sugar utilization and decarboxylase test showed differences in strains of Aeromonas hydrophila.
Link for e-copy: http://elibrary.narc.gov.np/?r=1554 E-copies
http://nkcs.org.np/narc/dl/?r=1554URL Evaluation of pesticides against grey leaf spot disease of maize in the eastern mid-hills of Nepal / N.K Dangal
in Proceedings of the 27th National Summer Crops Workshop, held at Rampur, Chitawan, 18-20 April 2013, Vol. II / Giri, Y.P.
Title : Evaluation of pesticides against grey leaf spot disease of maize in the eastern mid-hills of Nepal Material Type: printed text Authors: N.K Dangal, Editor ; P Joshi ; D.L. Mandal, Author ; Chaudhary, R.N., Author ; Chaudhary, B.N., Author Pagination: 318-321 p. Keywords: Bio-control agent cercospora zeae maydis ; disease severity scory yield Abstract: Grey leaf spot (GLS), caused by Cercospora zeae maydis, is a major disease of maize in the
eastern hills of Nepal. It is also becoming a threat to maize cultivation in the western hills
ofthe country. A field experiment was conducted during 2011 and 2012 in the eastern mid
hills of Nepal to identify the effective pesticides for management of the disease. The
experiment was conducted in Diktel, Khotang at 1400 mas) under natural incidence of grey
leaf spot disease. The experiment was conducted in a randomized complete block design
with 3 replications. Local variety of maize was planted in a plot of 9 m2
• Five pesticides
including bio-control agents were evaluated along with a control (water spray) for their
efficacy in the management of grey leaf spot of maize. The treatments were
Metalaxyi+Mancozeb, Carbendazim, Copper oxychloride, Pseudomonas+ Trichoderma and
Pseudomonas, The pesticideswere applied after the appearance of the disease at silking
stage. Disease scoring was done at 15 days after spraying. Pesticides and bio-control agents
differed significantly in controlling the target disease and producing higher grain yield.
Carbendazim and Metalaxyi+Mancozeb were equally effective in lowering disease severity
(45 .53 and 46.87%). Use of Copper oxychloride (48.33%) was similar to use of
Pseudomonas+Trichoderma (54.17%) in minimizing disease severity. All chemicals and
bio-control agents were superior to control in managing grey leaf spot and producing higher
grain yield. Application of Carbendazim produced the highest grain yield (3.84 tlha)
followed by Metalaxyl+Mancozeb (3.80 tlha) and Copper oxychloride (3.66 t/ha).The
control plot recorded the highest disease severity of 61.53% with production of the lowest
grain yield of 3.03 t/ha. Thus, incidence and severity of the grey leaf spot disease can be
minimized with higher grain production of maize by the use of pesticide Carbendazim in
the disease prone areas of eastern hills.Link for e-copy: http://elibrary.narc.gov.np/?r=961 Evaluation of pesticides against grey leaf spot disease of maize in the eastern mid-hills of Nepal [printed text] / N.K Dangal, Editor ; P Joshi ; D.L. Mandal, Author ; Chaudhary, R.N., Author ; Chaudhary, B.N., Author . - [s.d.] . - 318-321 p.
in Proceedings of the 27th National Summer Crops Workshop, held at Rampur, Chitawan, 18-20 April 2013, Vol. II / Giri, Y.P.
Keywords: Bio-control agent cercospora zeae maydis ; disease severity scory yield Abstract: Grey leaf spot (GLS), caused by Cercospora zeae maydis, is a major disease of maize in the
eastern hills of Nepal. It is also becoming a threat to maize cultivation in the western hills
ofthe country. A field experiment was conducted during 2011 and 2012 in the eastern mid
hills of Nepal to identify the effective pesticides for management of the disease. The
experiment was conducted in Diktel, Khotang at 1400 mas) under natural incidence of grey
leaf spot disease. The experiment was conducted in a randomized complete block design
with 3 replications. Local variety of maize was planted in a plot of 9 m2
• Five pesticides
including bio-control agents were evaluated along with a control (water spray) for their
efficacy in the management of grey leaf spot of maize. The treatments were
Metalaxyi+Mancozeb, Carbendazim, Copper oxychloride, Pseudomonas+ Trichoderma and
Pseudomonas, The pesticideswere applied after the appearance of the disease at silking
stage. Disease scoring was done at 15 days after spraying. Pesticides and bio-control agents
differed significantly in controlling the target disease and producing higher grain yield.
Carbendazim and Metalaxyi+Mancozeb were equally effective in lowering disease severity
(45 .53 and 46.87%). Use of Copper oxychloride (48.33%) was similar to use of
Pseudomonas+Trichoderma (54.17%) in minimizing disease severity. All chemicals and
bio-control agents were superior to control in managing grey leaf spot and producing higher
grain yield. Application of Carbendazim produced the highest grain yield (3.84 tlha)
followed by Metalaxyl+Mancozeb (3.80 tlha) and Copper oxychloride (3.66 t/ha).The
control plot recorded the highest disease severity of 61.53% with production of the lowest
grain yield of 3.03 t/ha. Thus, incidence and severity of the grey leaf spot disease can be
minimized with higher grain production of maize by the use of pesticide Carbendazim in
the disease prone areas of eastern hills.Link for e-copy: http://elibrary.narc.gov.np/?r=961 E-copies
http://nkcs.org.np/narc/dl/?r=961URL
in Proceedings of the Second National Soil Fertility Research Workshop, 24-25 March, 2015. Soil Science Division, NARC, Khumaltar, Lalitpur, Nepal / Krishna B. Karki
Title : The Trichoderma spp.: A biological control agents from Nepalese soil Material Type: printed text Authors: R.D Timila, Author ; S. Manandhar, Author ; C. Manandhar, Author ; Mahto, B.N., Author Pagination: 294-300 p. Languages : English (eng) Keywords: Biological control agent club-root disease, soil-borne diseases, Trichoderma. Abstract: Soil-borne diseases are the cause of severe losses of economically important crops. Chemical pesticides have been widely used for several decades to control soil-borne pathogens. As far as health and environment concerns, application of biological control agents is one of the eco-friendly alternative approaches to chemical pesticides. In this context, soil is the reservoir of different biological control organisms. Trichoderma spp. are the most commonly using biological control agents iN habiting in various types of soil. Efforts have been made for isolation of Trichoderma spp. from soil samples collected from the fields cultivated with different crops. Ninty isolates of Trichoderma spp. have been isolated either by direct soil plating or by serial diluton plate technique on potato dextrose agar medium………………………….
Link for e-copy: http://elibrary.narc.gov.np/?r=2114 The Trichoderma spp.: A biological control agents from Nepalese soil [printed text] / R.D Timila, Author ; S. Manandhar, Author ; C. Manandhar, Author ; Mahto, B.N., Author . - [s.d.] . - 294-300 p.
in Proceedings of the Second National Soil Fertility Research Workshop, 24-25 March, 2015. Soil Science Division, NARC, Khumaltar, Lalitpur, Nepal / Krishna B. Karki
Languages : English (eng)
Keywords: Biological control agent club-root disease, soil-borne diseases, Trichoderma. Abstract: Soil-borne diseases are the cause of severe losses of economically important crops. Chemical pesticides have been widely used for several decades to control soil-borne pathogens. As far as health and environment concerns, application of biological control agents is one of the eco-friendly alternative approaches to chemical pesticides. In this context, soil is the reservoir of different biological control organisms. Trichoderma spp. are the most commonly using biological control agents iN habiting in various types of soil. Efforts have been made for isolation of Trichoderma spp. from soil samples collected from the fields cultivated with different crops. Ninty isolates of Trichoderma spp. have been isolated either by direct soil plating or by serial diluton plate technique on potato dextrose agar medium………………………….
Link for e-copy: http://elibrary.narc.gov.np/?r=2114 E-copies
http://nkcs.org.np/narc/dl/?r=2114URL