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Title : गहुँ बीउ उत्पादन प्रविधि Material Type: printed text Authors: Sarita Manandhar, Author ; Chaudhary, B.N., Author ; Nabin Kumar Dangal, Author ; Surya Prakash Poudel, Author ; Sudeep Kumar Upadhyay, Author Publisher: Taraha,Sunsari : NARC,Kshetriya Krisi Anusandhan Parishad (SSNP-AF) Pagination: 18p. Languages : Nepali (nep) Keywords: Wheat;Wheat seeds;Wheat production Link for e-copy: http://elibrary.narc.gov.np/?r=1372 गहुँ बीउ उत्पादन प्रविधि [printed text] / Sarita Manandhar, Author ; Chaudhary, B.N., Author ; Nabin Kumar Dangal, Author ; Surya Prakash Poudel, Author ; Sudeep Kumar Upadhyay, Author . - [S.l.] : Taraha,Sunsari : NARC,Kshetriya Krisi Anusandhan Parishad (SSNP-AF), [s.d.] . - 18p.
Languages : Nepali (nep)
Keywords: Wheat;Wheat seeds;Wheat production Link for e-copy: http://elibrary.narc.gov.np/?r=1372
Title : मकै बीउ उत्पादन प्रविधि Material Type: printed text Authors: Sarita Manandhar, Author ; Bedanand Chaudhary, Author ; Surya Prakash Poudel, Author ; Nabin Kumar Dangal, Author ; Sudeep Kumar Upadhyay, Author Publisher: Taraha,Sunsari : NARC,Kshetriya Krisi Anusandhan Parishad (SSNP-AF) Pagination: 19p. Languages : Nepali (nep) Keywords: Maize seed;Maize productiton Link for e-copy: http://elibrary.narc.gov.np/?r=1757 मकै बीउ उत्पादन प्रविधि [printed text] / Sarita Manandhar, Author ; Bedanand Chaudhary, Author ; Surya Prakash Poudel, Author ; Nabin Kumar Dangal, Author ; Sudeep Kumar Upadhyay, Author . - [S.l.] : Taraha,Sunsari : NARC,Kshetriya Krisi Anusandhan Parishad (SSNP-AF), [s.d.] . - 19p.
Languages : Nepali (nep)
Keywords: Maize seed;Maize productiton Link for e-copy: http://elibrary.narc.gov.np/?r=1757 Evaluation of rice genotypes against bacterial leaf blight under field conditions / Bedanand Chaudhary
in Proceedings of the 27th National Summer Crops Workshop, held at Rampur, Chitawan, 18-20 April 2013, Vol. I / Giri, Y.P.
Title : Evaluation of rice genotypes against bacterial leaf blight under field conditions Material Type: printed text Authors: Bedanand Chaudhary ; Nabin Kumar Dangal, Author ; Parbati Joshi, Author ; Ang Tenjing Sherpa, Author Pagination: 313-318 p. Languages : English (eng) Keywords: Disease severity ; Xanthomonas oryzae pv. Genotype Resistant and Susceptible Abstract: Bacterial Leaf blight (BLB) of rice; caused by Xanthomonas oryzae pv. oryzae, is one of the
most important diseases of rice in the eastern terai ofNepal. A field screening experiment was
conducted to identify the resistance in rice to the disease during 2011 and 2012 wet season at
Regional Agricultural Research Station, Tarahara. A total of 134 (OBN-71 , RA VTRL-26,
RA VTN -21 , Quality-16) rice genotypes were evaluated for resistance in both the years. Each
entry was planted in 2 rows of 2m length. Susceptible variety of rice (purple) was planted at
an interval of every 10 entries. The pathogen was inoculated in all entries at 56 days after
transplanting using Kauffmans clipping method. The disease was scored at 21 days after
inoculation and continued for three scorings at 7 days interval using 0-9 scale. Severity of the
disease varied significantly among the tested rice genotypes in both years. Level of disease
severity was higher in most entries in 2012 than 2011 . Disease severity varied 11 to 100%.
None of the genotypes were free from the disease. Out of 134 genotypes, 34 genotypes were
moderately resistant to BLB disease during both the years which were IR09F 146, IR09F 166,
IR09Fl72, IR09F174, IR09Fl89, IR09Fll3, IR09Fl17, IR09Fl43, IR09Fl47, IR09Fl58,
IR09Fl77, IR09F229, CH-2, IR 80411-B-28-4, NR 1887-8-1-1-2, IR09Fl02, IR09F104,
IR09F187, IR09Fl95, IR09Fl03, IR09F105, IR09F106, IR09FIIO, IR09Fl23, IR09Fl78,
IR09F221 , IR09F226, IR09F283 , IR09F293, Sura vi, Sipi 5920-333 , Tarahara-1, Swarna and
Swam a sub-1. Altogether 96 genotypes were moderately resistant during 2011 which
decreased to 36 in 2012. Similarly, 16 genotypes were moderately susceptible during 2011
which increased to 55 in 2012. There were no highly susceptible genotypes during 2011 , but
32 genotypes became highly susceptible during 2012. Higher level of BLB disease was
observed in 2012 than 2011. IR 78937-B-B-B-B-1, IR 79913-B-176-B-4, IR 80973-B-186-
41-2, IR 70210-39-CPA7-1-1-4-2 were moderately resistant in 2011 but became highly
susceptible in 2012. BRRI Dhan-38, Mahima, IR70422-95-J-l , IR74052-95-3-3, Hardinath-2,
BASMATI 10 I were moderately susceptible during 2011 but became highly susceptible
during 2012. Similarly, IR 82635-B-B-47-2, Lalka basmati, IR 74371-54-1-1 , IR 86815-23-4-
1-2 and JH 15-1-1-1 were highly susceptible during 2012. Disease severity increased in
second and third scoring in all entries.Link for e-copy: http://elibrary.narc.gov.np/?r=917 Evaluation of rice genotypes against bacterial leaf blight under field conditions [printed text] / Bedanand Chaudhary ; Nabin Kumar Dangal, Author ; Parbati Joshi, Author ; Ang Tenjing Sherpa, Author . - [s.d.] . - 313-318 p.
in Proceedings of the 27th National Summer Crops Workshop, held at Rampur, Chitawan, 18-20 April 2013, Vol. I / Giri, Y.P.
Languages : English (eng)
Keywords: Disease severity ; Xanthomonas oryzae pv. Genotype Resistant and Susceptible Abstract: Bacterial Leaf blight (BLB) of rice; caused by Xanthomonas oryzae pv. oryzae, is one of the
most important diseases of rice in the eastern terai ofNepal. A field screening experiment was
conducted to identify the resistance in rice to the disease during 2011 and 2012 wet season at
Regional Agricultural Research Station, Tarahara. A total of 134 (OBN-71 , RA VTRL-26,
RA VTN -21 , Quality-16) rice genotypes were evaluated for resistance in both the years. Each
entry was planted in 2 rows of 2m length. Susceptible variety of rice (purple) was planted at
an interval of every 10 entries. The pathogen was inoculated in all entries at 56 days after
transplanting using Kauffmans clipping method. The disease was scored at 21 days after
inoculation and continued for three scorings at 7 days interval using 0-9 scale. Severity of the
disease varied significantly among the tested rice genotypes in both years. Level of disease
severity was higher in most entries in 2012 than 2011 . Disease severity varied 11 to 100%.
None of the genotypes were free from the disease. Out of 134 genotypes, 34 genotypes were
moderately resistant to BLB disease during both the years which were IR09F 146, IR09F 166,
IR09Fl72, IR09F174, IR09Fl89, IR09Fll3, IR09Fl17, IR09Fl43, IR09Fl47, IR09Fl58,
IR09Fl77, IR09F229, CH-2, IR 80411-B-28-4, NR 1887-8-1-1-2, IR09Fl02, IR09F104,
IR09F187, IR09Fl95, IR09Fl03, IR09F105, IR09F106, IR09FIIO, IR09Fl23, IR09Fl78,
IR09F221 , IR09F226, IR09F283 , IR09F293, Sura vi, Sipi 5920-333 , Tarahara-1, Swarna and
Swam a sub-1. Altogether 96 genotypes were moderately resistant during 2011 which
decreased to 36 in 2012. Similarly, 16 genotypes were moderately susceptible during 2011
which increased to 55 in 2012. There were no highly susceptible genotypes during 2011 , but
32 genotypes became highly susceptible during 2012. Higher level of BLB disease was
observed in 2012 than 2011. IR 78937-B-B-B-B-1, IR 79913-B-176-B-4, IR 80973-B-186-
41-2, IR 70210-39-CPA7-1-1-4-2 were moderately resistant in 2011 but became highly
susceptible in 2012. BRRI Dhan-38, Mahima, IR70422-95-J-l , IR74052-95-3-3, Hardinath-2,
BASMATI 10 I were moderately susceptible during 2011 but became highly susceptible
during 2012. Similarly, IR 82635-B-B-47-2, Lalka basmati, IR 74371-54-1-1 , IR 86815-23-4-
1-2 and JH 15-1-1-1 were highly susceptible during 2012. Disease severity increased in
second and third scoring in all entries.Link for e-copy: http://elibrary.narc.gov.np/?r=917 E-copies
http://nkcs.org.np/narc/dl/?r=917URL
in Proceedings of the 27th National Summer Crops Workshop, held at Rampur, Chitawan, 18-20 April 2013, Vol. I / Giri, Y.P.
Title : Evaluation of rice genotypes against blast disease under field condition Material Type: printed text Authors: Nabin Kumar Dangal ; Bedanand Chaudhary, Author ; Parbati Joshi, Author ; Ang Tenjing Sherpa, Author Pagination: 323-330 p. Languages : English (eng) Keywords: Pyricularia grise a, genotype, disease severity, leaf blast and resist~ce Abstract: Blast of rice, caused by Pyricularia grisea, is one of the most important diseases of rice in
Nepal. It has been causing significant yield loss in all rice growing areas. A field screening
experiment was conducted to identify resistance in rice to the disease during 2011 and 2012
wet season at Regional Agricultural Research Station, Tarahara. A total of 134 (OBN -70,
RA VTRL-26, RA VTN-22 and Quality-16) rice genotypes were evaluated for resistance in
both the years. atural spread of the pathogen in the test lines was allowed from border lines I
inoculums rows planted around the nursery with mixture of susceptible varieties (i.e. Mansuli
and Sankharika). Conducive environment for blast development was created by planting four
rows of Sesbania eculeata around the experimental plot 35 days prior to seeding of test
genotypes. Scoring was done on 22 days after seeding and continued for three scorings at 7
days interval using 0-9 scale developed by IRRI. Area under disease progress curve (AUDPC)
varied significantly among the tested rice genotypes in both years. Disease severity varied 0 to
77.77%. Out of 134 entries, 58 entries were resistant to the disease during 2011 and 63 in
2012. Among them, IR09Fl12, IR09Fl20, IR09Fl27, IR09F158, IR09Fl66, IR09Fl74,
IR09F 178, TR09F226, IR09F229, IR09F236, IR09F238, R09F253, IR09F293, IR-64-Sub-1,
IRRI-119, lET 14846, WAS 202-B-B-13 , IR 75299-94-1-2-2, IR 73007-131-1-2-2, 1R 70215-
70-CPA3-4-1-3, IR 80411-B-28-4, IR 79913-B-176-B-4, IR 78937-B-20-B-B-4, BR 4363-3-
8-1-2-4(BR-32), Basundhara, Tarahara-1, Hardinath-2, Sura vi and Mahima were free from
blast in both the years. The number of moderately resistant (3 -4), moderately susceptible (5 -6)
and highly susceptible (7-9) genotypes was 43, 9 and 2 in 2011 and 54, 3 and 1 in 2012,
respectively. Disease severity increased in second and third scorings in all entries except the
resistant ones. IR09Fll0, NR 1887-8-1-1-2 and Kanchhi masuli were highly susceptible to
blast with the highest disease score (7) which were completely knocked down in the final
scoring.Link for e-copy: http://elibrary.narc.gov.np/?r=919 Evaluation of rice genotypes against blast disease under field condition [printed text] / Nabin Kumar Dangal ; Bedanand Chaudhary, Author ; Parbati Joshi, Author ; Ang Tenjing Sherpa, Author . - [s.d.] . - 323-330 p.
in Proceedings of the 27th National Summer Crops Workshop, held at Rampur, Chitawan, 18-20 April 2013, Vol. I / Giri, Y.P.
Languages : English (eng)
Keywords: Pyricularia grise a, genotype, disease severity, leaf blast and resist~ce Abstract: Blast of rice, caused by Pyricularia grisea, is one of the most important diseases of rice in
Nepal. It has been causing significant yield loss in all rice growing areas. A field screening
experiment was conducted to identify resistance in rice to the disease during 2011 and 2012
wet season at Regional Agricultural Research Station, Tarahara. A total of 134 (OBN -70,
RA VTRL-26, RA VTN-22 and Quality-16) rice genotypes were evaluated for resistance in
both the years. atural spread of the pathogen in the test lines was allowed from border lines I
inoculums rows planted around the nursery with mixture of susceptible varieties (i.e. Mansuli
and Sankharika). Conducive environment for blast development was created by planting four
rows of Sesbania eculeata around the experimental plot 35 days prior to seeding of test
genotypes. Scoring was done on 22 days after seeding and continued for three scorings at 7
days interval using 0-9 scale developed by IRRI. Area under disease progress curve (AUDPC)
varied significantly among the tested rice genotypes in both years. Disease severity varied 0 to
77.77%. Out of 134 entries, 58 entries were resistant to the disease during 2011 and 63 in
2012. Among them, IR09Fl12, IR09Fl20, IR09Fl27, IR09F158, IR09Fl66, IR09Fl74,
IR09F 178, TR09F226, IR09F229, IR09F236, IR09F238, R09F253, IR09F293, IR-64-Sub-1,
IRRI-119, lET 14846, WAS 202-B-B-13 , IR 75299-94-1-2-2, IR 73007-131-1-2-2, 1R 70215-
70-CPA3-4-1-3, IR 80411-B-28-4, IR 79913-B-176-B-4, IR 78937-B-20-B-B-4, BR 4363-3-
8-1-2-4(BR-32), Basundhara, Tarahara-1, Hardinath-2, Sura vi and Mahima were free from
blast in both the years. The number of moderately resistant (3 -4), moderately susceptible (5 -6)
and highly susceptible (7-9) genotypes was 43, 9 and 2 in 2011 and 54, 3 and 1 in 2012,
respectively. Disease severity increased in second and third scorings in all entries except the
resistant ones. IR09Fll0, NR 1887-8-1-1-2 and Kanchhi masuli were highly susceptible to
blast with the highest disease score (7) which were completely knocked down in the final
scoring.Link for e-copy: http://elibrary.narc.gov.np/?r=919 E-copies
http://nkcs.org.np/narc/dl/?r=919URL
in Proceedings of the 27th National Summer Crops Workshop, held at Rampur, Chitawan, 18-20 April 2013, Vol. I / Giri, Y.P.
Title : Evaluation of rice genotypes for resistance to sheath blight under field contions Material Type: printed text Authors: Bedanand Chaudhary ; Nabin Kumar Dangal, Author ; Parbati Joshi, Author ; Sudeep Kumar Upadhyay, Author Pagination: 303-312 p. Languages : English (eng) Keywords: Genotypes ; resistance field conditions sheath blight Abstract: Sheath blight of rice, caused by Rhizoctonia sol ani, is one of the most important rice diseases
worldwide; however, no rice cultivar has been found to be completely resistant to this fungus .
Resistance of rice to sheath blight is quantitative, and involves two mechanisms:
physiological resistance and disease escape. Disease escape is mainly governed by plant
structure or plant morphology and physiologically resistance genotypes may exhibit disease in
the field conditions. Therefore, field screening experiments were conducted to address
morphological resistance (disease escape) in rice to sheath blight during the 2011 and 2012
wet season at Regional Agricultural Research Station, Tarahara. A total of28 in 2011 and 174
rice genotypes in 2012 were tested for morphological resistance. The susceptible hill (Swama)
of 56 day old plants was inoculated with infected pieces of rice stem. Number of infected
tillers of test entries was recorded on 14 days after inoculation and continued for three
scorings in both years at 7 day-intervals. During 20 11 disease incidence and area under
disease progress curve (AUDPC) varied significantly among the tested rice genotypes. The
varieties Tetep and lAC 165 had the lowest and highest terminal disease incidence and
AUDPC, respectively. Sabitri, MTU 1010 and IR 26 also recorded lower AUDPC values.
During 2012, rice genotypes varied for disease incidence from 0.0 to 50%. Disease incidence
progressed fast in some entries especially in quality rice. In the first scoring, 24 entries were
disease free (DF) and 32 were moderately resistant (MR). Out of 174 entries, 109, 8 and l
lines were moderately susceptible (MS), Susceptible (S) and highly susceptible (HS),
respectively. In the second scoring, 48, 26, 86 and 14 lines were DF, MR, MS and S,
respectively, to the disease. In the final scoring, IR 79913 -B-1 76-B-4, NR 1887-8-1-1-2,
IR79907-B-425-B-3 , IR 83381-B-B-7-1 and IR 87751 -20-4-4-2 were disease free. Out of
174, 29 genotypes were MR; similarly, 128, 11 and I were MS, S and HS to the disease,
respectively. Based on AUDPC values, 5 genotypes were grouped as DF, 67 as MR, 92 as MS
and 10 as S, respectively. More number of entries scored disease free in the second scoring
than that in the ftrst one. This was because separate hills were considered for scoring in the
different dates. Thus, the result showed that the disease incidence in rice genotypes differed
depending on microclimate conditions of the plantsLink for e-copy: http://elibrary.narc.gov.np/?r=916 Evaluation of rice genotypes for resistance to sheath blight under field contions [printed text] / Bedanand Chaudhary ; Nabin Kumar Dangal, Author ; Parbati Joshi, Author ; Sudeep Kumar Upadhyay, Author . - [s.d.] . - 303-312 p.
in Proceedings of the 27th National Summer Crops Workshop, held at Rampur, Chitawan, 18-20 April 2013, Vol. I / Giri, Y.P.
Languages : English (eng)
Keywords: Genotypes ; resistance field conditions sheath blight Abstract: Sheath blight of rice, caused by Rhizoctonia sol ani, is one of the most important rice diseases
worldwide; however, no rice cultivar has been found to be completely resistant to this fungus .
Resistance of rice to sheath blight is quantitative, and involves two mechanisms:
physiological resistance and disease escape. Disease escape is mainly governed by plant
structure or plant morphology and physiologically resistance genotypes may exhibit disease in
the field conditions. Therefore, field screening experiments were conducted to address
morphological resistance (disease escape) in rice to sheath blight during the 2011 and 2012
wet season at Regional Agricultural Research Station, Tarahara. A total of28 in 2011 and 174
rice genotypes in 2012 were tested for morphological resistance. The susceptible hill (Swama)
of 56 day old plants was inoculated with infected pieces of rice stem. Number of infected
tillers of test entries was recorded on 14 days after inoculation and continued for three
scorings in both years at 7 day-intervals. During 20 11 disease incidence and area under
disease progress curve (AUDPC) varied significantly among the tested rice genotypes. The
varieties Tetep and lAC 165 had the lowest and highest terminal disease incidence and
AUDPC, respectively. Sabitri, MTU 1010 and IR 26 also recorded lower AUDPC values.
During 2012, rice genotypes varied for disease incidence from 0.0 to 50%. Disease incidence
progressed fast in some entries especially in quality rice. In the first scoring, 24 entries were
disease free (DF) and 32 were moderately resistant (MR). Out of 174 entries, 109, 8 and l
lines were moderately susceptible (MS), Susceptible (S) and highly susceptible (HS),
respectively. In the second scoring, 48, 26, 86 and 14 lines were DF, MR, MS and S,
respectively, to the disease. In the final scoring, IR 79913 -B-1 76-B-4, NR 1887-8-1-1-2,
IR79907-B-425-B-3 , IR 83381-B-B-7-1 and IR 87751 -20-4-4-2 were disease free. Out of
174, 29 genotypes were MR; similarly, 128, 11 and I were MS, S and HS to the disease,
respectively. Based on AUDPC values, 5 genotypes were grouped as DF, 67 as MR, 92 as MS
and 10 as S, respectively. More number of entries scored disease free in the second scoring
than that in the ftrst one. This was because separate hills were considered for scoring in the
different dates. Thus, the result showed that the disease incidence in rice genotypes differed
depending on microclimate conditions of the plantsLink for e-copy: http://elibrary.narc.gov.np/?r=916 E-copies
http://nkcs.org.np/narc/dl/?r=916URL
