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in Summer crops research in Nepal: Proceedings of the 25th Summer Crops Workshop held at Kathmandu 21-23 June 2007 / Adhikari, N.P.
Title : Collaborative rice research and development thrusts between irri and Nepal Material Type: printed text Authors: Tripathi, B.P., Editor ; Gurung, H.B., Author ; Pandey, Sushil, Author ; Ladha, J.K., Author ; A Kumar, Author ; Regmi, A.P., Author ; Sherchan, D.P., Author ; AK Gautam, Author ; Akhtar, T., Author ; B.B Adhikari, Author ; K.K Dahal, Author ; H.K Panta, Author Publication Date: 2010 Pagination: 203-205 p. Abstract: The three major collaborative projects were initiated from 2005 in different Research Centres of Nepal Agricultural Research
Council (NARC) and in Lamjung site of Institute of Agriculture and Animal Sciences (IAAS), Chitwan. The overall objectives of
these projects are to increase the rice production and productivity in favorable lowlands and marginalized upland rice environments
of both plain and hills ofNepal. Baseline survey of all sites is discussed. Different Integrated Crop Management technologies in ricewheat
systems in both transplanted rice and upland rice evaluated. Farmers' field days' and trainings organized and different
Resource Conservation Technologies (RCTs) evaluated. Both lowland and upland rice varieties were tested in mother and baby
trials. Varieties suitable for both lowlands and upland rice were selected by conducting mother and baby trials as well as in Farmers'
Acceptance Test (FAT) !Minikits and Demonstrations. Farmers have saved seeds of some promising rice varieties s for planting in
the next season. Drought tolerant rice varieties received from IRRI were selected for rainfed lowland conditions of Nepal. For the
dissemination of rice technologies to different stakeholders, exposure trainings/workshops were organized for the scientists/technical
officers/technicians of NARC as well as Subject Matter Specialists (SMS)/Extension Officers of the districts/Training
Officers/Technicians of the Regional Training Centers and Regional seed, soil and plant protection technicians of different regions
of Nepal. Rice Fact Sheets prepared by the scientists were put in NARC website as Nepal Rice Knowledge Bank (NRKB) with the
help of IRRI. Rice technologies prepared by IRRl in the form of Rice Knowledge Bank (RKB) were disseminated by providing COs
to different NARC research stations, district agricultural development offices, regional directorate of agriculture and NGOs working
in rice research and development as well as to IAAS, Rampur for teaching pUiposes. With the establishment ofNepal-IRRI Office,
the technical capability of scientists and technical officers ofNARC has been further strengthened.Link for e-copy: http://elibrary.narc.gov.np/?r=1017 Collaborative rice research and development thrusts between irri and Nepal [printed text] / Tripathi, B.P., Editor ; Gurung, H.B., Author ; Pandey, Sushil, Author ; Ladha, J.K., Author ; A Kumar, Author ; Regmi, A.P., Author ; Sherchan, D.P., Author ; AK Gautam, Author ; Akhtar, T., Author ; B.B Adhikari, Author ; K.K Dahal, Author ; H.K Panta, Author . - 2010 . - 203-205 p.
in Summer crops research in Nepal: Proceedings of the 25th Summer Crops Workshop held at Kathmandu 21-23 June 2007 / Adhikari, N.P.
Abstract: The three major collaborative projects were initiated from 2005 in different Research Centres of Nepal Agricultural Research
Council (NARC) and in Lamjung site of Institute of Agriculture and Animal Sciences (IAAS), Chitwan. The overall objectives of
these projects are to increase the rice production and productivity in favorable lowlands and marginalized upland rice environments
of both plain and hills ofNepal. Baseline survey of all sites is discussed. Different Integrated Crop Management technologies in ricewheat
systems in both transplanted rice and upland rice evaluated. Farmers' field days' and trainings organized and different
Resource Conservation Technologies (RCTs) evaluated. Both lowland and upland rice varieties were tested in mother and baby
trials. Varieties suitable for both lowlands and upland rice were selected by conducting mother and baby trials as well as in Farmers'
Acceptance Test (FAT) !Minikits and Demonstrations. Farmers have saved seeds of some promising rice varieties s for planting in
the next season. Drought tolerant rice varieties received from IRRI were selected for rainfed lowland conditions of Nepal. For the
dissemination of rice technologies to different stakeholders, exposure trainings/workshops were organized for the scientists/technical
officers/technicians of NARC as well as Subject Matter Specialists (SMS)/Extension Officers of the districts/Training
Officers/Technicians of the Regional Training Centers and Regional seed, soil and plant protection technicians of different regions
of Nepal. Rice Fact Sheets prepared by the scientists were put in NARC website as Nepal Rice Knowledge Bank (NRKB) with the
help of IRRI. Rice technologies prepared by IRRl in the form of Rice Knowledge Bank (RKB) were disseminated by providing COs
to different NARC research stations, district agricultural development offices, regional directorate of agriculture and NGOs working
in rice research and development as well as to IAAS, Rampur for teaching pUiposes. With the establishment ofNepal-IRRI Office,
the technical capability of scientists and technical officers ofNARC has been further strengthened.Link for e-copy: http://elibrary.narc.gov.np/?r=1017 E-copies
http://nkcs.org.np/narc/dl/?r=1017URLEffect of methods of crop establishment and weed management on Grain yield of rice and wheat in rice-wheat system / AK Gautam
in Summer crops research in Nepal: Proceedings of the 25th Summer Crops Workshop held at Kathmandu 21-23 June 2007 / Adhikari, N.P.
Title : Effect of methods of crop establishment and weed management on Grain yield of rice and wheat in rice-wheat system Material Type: printed text Authors: AK Gautam, Editor ; NP Adhikari, Author ; M Mishra, Author ; R.B Das, Author Publication Date: 2010 Pagination: 392-396 p. Abstract: Rice-wheat system is a labor intensive due to high cost in land preparation and plant establishment, and the productivity of this
system is either declining of stagnant. An alternative crop establishment method is needed for both the crops particularly in system
basis to reduce the cost of cultivation and to sustain the productivity. Therefore, an experiment was conducted to study the effect of
methods of crop establishments, rice varieties and weed management on productivity of rice and wheat in rice-wheat system during
2004/05 and 2005/06, respectively, at National Rice Research Program, Hardinath. Method of crop establishment was laid out in
main-plots and rice varieties and weed control methods were in sub-plots in split plot design. All the crop establishment combination
in rice-wheat system produced similar yield in the pattern. But dry weed weight at 25 days after transplanting (DAT) of rice and at
wheat maturity was significantly higher in bed planting combination of rice and wheat. Weed control methods did not differ in grain
yield of rice but wheat yield was significantly higher (2,532 kg/ha) due to use of Isoproturan + 2, 4-D both @ 1.5 kg a. i.lha than no
weeding (2,142 kg/ha). Weed dry weight in rice was significantly lower at 25 days after transplanting of rice due to Butachlor spray
+Hand weeding (HW) at 25 DAT than HW at 25 and 45 DAT. Similarly, use ofherbicides reduced weed weight in wheat compared
to no weeding.Link for e-copy: http://elibrary.narc.gov.np/?r=1042 Effect of methods of crop establishment and weed management on Grain yield of rice and wheat in rice-wheat system [printed text] / AK Gautam, Editor ; NP Adhikari, Author ; M Mishra, Author ; R.B Das, Author . - 2010 . - 392-396 p.
in Summer crops research in Nepal: Proceedings of the 25th Summer Crops Workshop held at Kathmandu 21-23 June 2007 / Adhikari, N.P.
Abstract: Rice-wheat system is a labor intensive due to high cost in land preparation and plant establishment, and the productivity of this
system is either declining of stagnant. An alternative crop establishment method is needed for both the crops particularly in system
basis to reduce the cost of cultivation and to sustain the productivity. Therefore, an experiment was conducted to study the effect of
methods of crop establishments, rice varieties and weed management on productivity of rice and wheat in rice-wheat system during
2004/05 and 2005/06, respectively, at National Rice Research Program, Hardinath. Method of crop establishment was laid out in
main-plots and rice varieties and weed control methods were in sub-plots in split plot design. All the crop establishment combination
in rice-wheat system produced similar yield in the pattern. But dry weed weight at 25 days after transplanting (DAT) of rice and at
wheat maturity was significantly higher in bed planting combination of rice and wheat. Weed control methods did not differ in grain
yield of rice but wheat yield was significantly higher (2,532 kg/ha) due to use of Isoproturan + 2, 4-D both @ 1.5 kg a. i.lha than no
weeding (2,142 kg/ha). Weed dry weight in rice was significantly lower at 25 days after transplanting of rice due to Butachlor spray
+Hand weeding (HW) at 25 DAT than HW at 25 and 45 DAT. Similarly, use ofherbicides reduced weed weight in wheat compared
to no weeding.Link for e-copy: http://elibrary.narc.gov.np/?r=1042 E-copies
http://nkcs.org.np/narc/dl/?r=1042URL
in Summer crops research in Nepal: Proceedings of the 25th Summer Crops Workshop held at Kathmandu 21-23 June 2007 / Adhikari, N.P.
Title : Effect of seedling age and spacing on productivity of irrigated rice under system of rice intesificaiton in central terai Material Type: printed text Authors: AK Gautam, Editor ; NP Adhikari, Author ; M Mishra, Author ; R.B Das, Author Publication Date: 2010 Pagination: 397-401 p. Abstract: System of rice intensification (SRI), practically considered as an agrological approach rather than a technology, has received a fair
amount of attention in recent year in most of the rice growing countries. Transplanting of younger seedlings in wider spacing is the
practice to be followed in SRI. But the literature indicated different age of seedlings and various plant spacing for this system of rice
cultivation. Therefore, an experiment was conducted in split plot design with plant spacing in square pattern (20x20, 25x25, 30x30
and 40x40 em) as main-plots and age of seedlings (10,15 and 20 days) as sub-plots with three replications in 2004 and 2005 with
some modifications in other practices. The statistical analysis revealed that days to heading, days to maturity, number of tillers/hill at
30 OAT, per cent of filled grains/panicle and 1000 grain weight were not affected by the spacing. But, panicles/hill at maturity was
significantly higher under wider spacing of 40x40 em (18.2) than other spacing but panicles/unit area was remarkably lowest (114).
Younger seedlings of 10 days old matured earlier and produced significantly higher number of panicles/m2 (186) with lower filled
grains/panicle than older seedlings. The interactive effect of decreasing number of panicle number/m2 and filled grains/panicle from
closer to wider spacing and younger to older seedlings resulted in non-significant differences in grain yield during both years of
study. The overall result suggested that rice seedling from 10 to 20 days old can be transplanted in square pattern of20, 25, 30 and
40 em spacing.Link for e-copy: http://elibrary.narc.gov.np/?r=1043 Effect of seedling age and spacing on productivity of irrigated rice under system of rice intesificaiton in central terai [printed text] / AK Gautam, Editor ; NP Adhikari, Author ; M Mishra, Author ; R.B Das, Author . - 2010 . - 397-401 p.
in Summer crops research in Nepal: Proceedings of the 25th Summer Crops Workshop held at Kathmandu 21-23 June 2007 / Adhikari, N.P.
Abstract: System of rice intensification (SRI), practically considered as an agrological approach rather than a technology, has received a fair
amount of attention in recent year in most of the rice growing countries. Transplanting of younger seedlings in wider spacing is the
practice to be followed in SRI. But the literature indicated different age of seedlings and various plant spacing for this system of rice
cultivation. Therefore, an experiment was conducted in split plot design with plant spacing in square pattern (20x20, 25x25, 30x30
and 40x40 em) as main-plots and age of seedlings (10,15 and 20 days) as sub-plots with three replications in 2004 and 2005 with
some modifications in other practices. The statistical analysis revealed that days to heading, days to maturity, number of tillers/hill at
30 OAT, per cent of filled grains/panicle and 1000 grain weight were not affected by the spacing. But, panicles/hill at maturity was
significantly higher under wider spacing of 40x40 em (18.2) than other spacing but panicles/unit area was remarkably lowest (114).
Younger seedlings of 10 days old matured earlier and produced significantly higher number of panicles/m2 (186) with lower filled
grains/panicle than older seedlings. The interactive effect of decreasing number of panicle number/m2 and filled grains/panicle from
closer to wider spacing and younger to older seedlings resulted in non-significant differences in grain yield during both years of
study. The overall result suggested that rice seedling from 10 to 20 days old can be transplanted in square pattern of20, 25, 30 and
40 em spacing.Link for e-copy: http://elibrary.narc.gov.np/?r=1043 E-copies
http://nkcs.org.np/narc/dl/?r=1043URL
in Rice research in Nepal : Proceedings of 24th National Summer Crops Research Workshop, Khumaltar, Lalitpur, 30-31 June 2004 / Adhikari, N.P.
Title : Status of rice seed in Nepal: Production and distribution Material Type: printed text Authors: Yadaw, R.B. ; B Chauddhary, Author ; NP Adhikari, Author ; M Yadav, Author ; Akhtar, T., Author ; AK Gautam, Author ; HK Shrestha, Author Pagination: 414-430 p. Languages : English (eng) Keywords: Souce seed ; genetic integrity replacement rate food security private sector GDP WTO Abstract: Rice is one of the major crop in Nepal and is cultivated in diverse agro-ecosystem through
out the country. National Rice Research program (NRRP) produces source seed of rice to
meet the ever-increasing demand. The program produced 57 ton and 7.53 ton of breeder and
foundation seed during 2002/03. For the last 10 years, the demand of rice seed has been in
increasing trend. This is a positive indication for replacement of improved rice seed and
increased rice production. Officially, seeds are supplied to the grower through Nepal
Agriculture Research Council farms/stations, NGO's, INGO's and lor Nepal seed companies.
However 90% of improved quality rice seed is fulfilled through exchange among the
farmers. Only 0. 5% quality rice seed is supplied by GO INGO... Thus there is a tremendous
prospect of improving seed supply system for increasing rice production and ensuring food
security.Link for e-copy: http://elibrary.narc.gov.np/?r=1133 Status of rice seed in Nepal: Production and distribution [printed text] / Yadaw, R.B. ; B Chauddhary, Author ; NP Adhikari, Author ; M Yadav, Author ; Akhtar, T., Author ; AK Gautam, Author ; HK Shrestha, Author . - [s.d.] . - 414-430 p.
in Rice research in Nepal : Proceedings of 24th National Summer Crops Research Workshop, Khumaltar, Lalitpur, 30-31 June 2004 / Adhikari, N.P.
Languages : English (eng)
Keywords: Souce seed ; genetic integrity replacement rate food security private sector GDP WTO Abstract: Rice is one of the major crop in Nepal and is cultivated in diverse agro-ecosystem through
out the country. National Rice Research program (NRRP) produces source seed of rice to
meet the ever-increasing demand. The program produced 57 ton and 7.53 ton of breeder and
foundation seed during 2002/03. For the last 10 years, the demand of rice seed has been in
increasing trend. This is a positive indication for replacement of improved rice seed and
increased rice production. Officially, seeds are supplied to the grower through Nepal
Agriculture Research Council farms/stations, NGO's, INGO's and lor Nepal seed companies.
However 90% of improved quality rice seed is fulfilled through exchange among the
farmers. Only 0. 5% quality rice seed is supplied by GO INGO... Thus there is a tremendous
prospect of improving seed supply system for increasing rice production and ensuring food
security.Link for e-copy: http://elibrary.narc.gov.np/?r=1133 E-copies
http://nkcs.org.np/narc/dl/?r=1133URL
in Summer crops research in Nepal: Proceedings of the 25th Summer Crops Workshop held at Kathmandu 21-23 June 2007 / Adhikari, N.P.
Title : Study on nursery management and nitrogen applicaiton in boro rice Material Type: printed text Authors: AK Gautam, Editor ; NP Adhikari, Author ; R.B Yadav, Author ; R.B Das, Author Publication Date: 2010 Pagination: 384-391 p. Abstract: Boro rice cultivation is an emerging rice culture in some parts of Nepal. Nursery raising is one of the major problems in Boro rice
culture. Rice seedling remains for long period in the nursery during winter season, which causes cold injury and breakage of seedling
during up-rooting. Crop period being longer in the main field may require higher dose of inorganic nitrogen during different growth
period. Therefore, three experiments were conducted with the objectives to study the effect of different materials on seedling growth
and t~e effect of plant stand and nitrogen levels on growth and yield of 1ice with different designs during 2004 and 2005 at NRRP,
Hardmath. The study revealed that use of either chopped wheat straw, chopped rice straw or compost significantly increased the
seedling height and weight at various days after seeding. Plant spacing had not any effect of filled grains/panicles, 1000 grain
weight, grain yield and harvest index. But biomass per unit area was significantly more (936 kglm2) under closer spacing (20 x 10
em) of transplant with lower panicleslm2 (6.9). Increasing levels of nitrogen significantly increased biomass/m2, filled grains/panicle,
1000 seed weight and grain yield up to 120 kglha. Beyond this level of nitrogen all these characters were art par. Harvest index did
not differ due to application increasing level of nitrogen. The study also revealed that more the number of split application of
nitrogen higher the panicle/hill, biomass/m2
, filled grains/panicle, 1000 grain weight and grain yield. Nitrogen applied as 25% basal
+ 25% at 30 or 40 DA T + 25% at 40 or 50 DAT + 25% at 50 or 60 DAT significantly produced higher grain yield of 4,241 and
4,322 kglha, respectively, than other treatments. As the studies were done only for one year, there experiments should be continued
for few more years to confirm the results and to make the recommendation.Link for e-copy: http://elibrary.narc.gov.np/?r=1041 Study on nursery management and nitrogen applicaiton in boro rice [printed text] / AK Gautam, Editor ; NP Adhikari, Author ; R.B Yadav, Author ; R.B Das, Author . - 2010 . - 384-391 p.
in Summer crops research in Nepal: Proceedings of the 25th Summer Crops Workshop held at Kathmandu 21-23 June 2007 / Adhikari, N.P.
Abstract: Boro rice cultivation is an emerging rice culture in some parts of Nepal. Nursery raising is one of the major problems in Boro rice
culture. Rice seedling remains for long period in the nursery during winter season, which causes cold injury and breakage of seedling
during up-rooting. Crop period being longer in the main field may require higher dose of inorganic nitrogen during different growth
period. Therefore, three experiments were conducted with the objectives to study the effect of different materials on seedling growth
and t~e effect of plant stand and nitrogen levels on growth and yield of 1ice with different designs during 2004 and 2005 at NRRP,
Hardmath. The study revealed that use of either chopped wheat straw, chopped rice straw or compost significantly increased the
seedling height and weight at various days after seeding. Plant spacing had not any effect of filled grains/panicles, 1000 grain
weight, grain yield and harvest index. But biomass per unit area was significantly more (936 kglm2) under closer spacing (20 x 10
em) of transplant with lower panicleslm2 (6.9). Increasing levels of nitrogen significantly increased biomass/m2, filled grains/panicle,
1000 seed weight and grain yield up to 120 kglha. Beyond this level of nitrogen all these characters were art par. Harvest index did
not differ due to application increasing level of nitrogen. The study also revealed that more the number of split application of
nitrogen higher the panicle/hill, biomass/m2
, filled grains/panicle, 1000 grain weight and grain yield. Nitrogen applied as 25% basal
+ 25% at 30 or 40 DA T + 25% at 40 or 50 DAT + 25% at 50 or 60 DAT significantly produced higher grain yield of 4,241 and
4,322 kglha, respectively, than other treatments. As the studies were done only for one year, there experiments should be continued
for few more years to confirm the results and to make the recommendation.Link for e-copy: http://elibrary.narc.gov.np/?r=1041 E-copies
http://nkcs.org.np/narc/dl/?r=1041URL
