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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 different pesticides for the management of rice stem borers Material Type: printed text Authors: G.S Bhandari, Editor ; B. Chaudhary ; B Sapkota, Author ; D.N Mahato, Author ; S.K Upadhyaya, Author Pagination: 304-309 p. Keywords: Botanical pesticide ; dead heart pesticides stem borer white ear Abstract: Rice Stem Borers have been recognized as the national pest of Rice in Nepal. Past studies
have estimated about 40% of total loss in Rice is due to Rice Stem Borer. An experiment
was conducted at Regional Agricultural Research Station, Tarahara during rice growing
season of 2011 and 2012 with the objective of evaluating differential efficacy of different
pesticides combinations against Rice Stem Borers. The experiment had 12 different
pesticides combinations laid out in a Complete Block Design with three replications.
Responses were recorded on count of dead hearts, count of white heads and grain yield to
compare the treatments. The effect of treatments on count of dead hearts was found highly
significant. Number of dead hearts was the least on Seedling Root Dipping with
chJorpyrifos 20% EC @ 2 milL of Water+ three sprays of imidacloprid 17.8% SL@ 1
ml/2L of water 30, 40 and SO days after transplanting (DAT) followed by Seedling Root
Dipping with chlorpyrifos 20% EC@ 2 milL of Water+ three sprays of Lantana camera
Extract @ S% solution 30, 40 and SO DA T and Root Dipping with chlorpyrifos 20% EC @
2 milL of water + Urea 20 gm IL of water for 3 hours + Lantana camera @ S% solution at
30, 40 and 50 OAT. The effect of treatments for count of white ears was also highly
significant. The Seedling Root Dipping with chlorpyrifos 20% EC @ 2 mi/L of Water+
three sprays ofimidacloprid 17.8% SL@ 1 mi/2L ofwater 30,40 and 50 DAT recorded the
lowest count of white ears followed by Root Dipping with chlorpyrifos 20% EC @ 2 milL
of Water + three sprays of Sweet Flag Stolen Extract @ 5% solution 30, 40 and 50 DA T
and Root Dipping with chlorpyrifos 20% EC @ 2 milL of Water + Lantana camera extract
@ 5% solution Spray 30, 40 and 50 DAT. The variation on grain yield was significant due
to the treatments. The highest grain yield was obtained from Root Dipping with
chlorpyrifos 20% EC @ 2 mVL of Water and Urea 20 g /L for 3 hours + three sprays of
imidacloprid 17.8% SL @ 1 ml/2L of water at 30,40 and 50 DAT followed by Root
Dipping with chloropyrifos and Urea 20 g /L for 3 hours + three sprays of Sweet Flag @
5% solution and Root Dipping with chlorpyrifos 20% EC @ 2 ml/L of Water+ three
sprays of Lantana camera Extract. All the treatments combinations were significantly
superior to the control and the standard check (carbofuran 3G) for all parameters
considered. This study concluded that application of botanical pesticides in combination
with chemical pesticides is effective for managing rice stem borer.Link for e-copy: http://elibrary.narc.gov.np/?r=958 Evaluation of different pesticides for the management of rice stem borers [printed text] / G.S Bhandari, Editor ; B. Chaudhary ; B Sapkota, Author ; D.N Mahato, Author ; S.K Upadhyaya, Author . - [s.d.] . - 304-309 p.
in Proceedings of the 27th National Summer Crops Workshop, held at Rampur, Chitawan, 18-20 April 2013, Vol. II / Giri, Y.P.
Keywords: Botanical pesticide ; dead heart pesticides stem borer white ear Abstract: Rice Stem Borers have been recognized as the national pest of Rice in Nepal. Past studies
have estimated about 40% of total loss in Rice is due to Rice Stem Borer. An experiment
was conducted at Regional Agricultural Research Station, Tarahara during rice growing
season of 2011 and 2012 with the objective of evaluating differential efficacy of different
pesticides combinations against Rice Stem Borers. The experiment had 12 different
pesticides combinations laid out in a Complete Block Design with three replications.
Responses were recorded on count of dead hearts, count of white heads and grain yield to
compare the treatments. The effect of treatments on count of dead hearts was found highly
significant. Number of dead hearts was the least on Seedling Root Dipping with
chJorpyrifos 20% EC @ 2 milL of Water+ three sprays of imidacloprid 17.8% SL@ 1
ml/2L of water 30, 40 and SO days after transplanting (DAT) followed by Seedling Root
Dipping with chlorpyrifos 20% EC@ 2 milL of Water+ three sprays of Lantana camera
Extract @ S% solution 30, 40 and SO DA T and Root Dipping with chlorpyrifos 20% EC @
2 milL of water + Urea 20 gm IL of water for 3 hours + Lantana camera @ S% solution at
30, 40 and 50 OAT. The effect of treatments for count of white ears was also highly
significant. The Seedling Root Dipping with chlorpyrifos 20% EC @ 2 mi/L of Water+
three sprays ofimidacloprid 17.8% SL@ 1 mi/2L ofwater 30,40 and 50 DAT recorded the
lowest count of white ears followed by Root Dipping with chlorpyrifos 20% EC @ 2 milL
of Water + three sprays of Sweet Flag Stolen Extract @ 5% solution 30, 40 and 50 DA T
and Root Dipping with chlorpyrifos 20% EC @ 2 milL of Water + Lantana camera extract
@ 5% solution Spray 30, 40 and 50 DAT. The variation on grain yield was significant due
to the treatments. The highest grain yield was obtained from Root Dipping with
chlorpyrifos 20% EC @ 2 mVL of Water and Urea 20 g /L for 3 hours + three sprays of
imidacloprid 17.8% SL @ 1 ml/2L of water at 30,40 and 50 DAT followed by Root
Dipping with chloropyrifos and Urea 20 g /L for 3 hours + three sprays of Sweet Flag @
5% solution and Root Dipping with chlorpyrifos 20% EC @ 2 ml/L of Water+ three
sprays of Lantana camera Extract. All the treatments combinations were significantly
superior to the control and the standard check (carbofuran 3G) for all parameters
considered. This study concluded that application of botanical pesticides in combination
with chemical pesticides is effective for managing rice stem borer.Link for e-copy: http://elibrary.narc.gov.np/?r=958 E-copies
http://nkcs.org.np/narc/dl/?r=958URLPopulation dynamics of insect pests of rice at RARS Tarahara: a light trap survelliance / G.S Bhandari
in Proceedings of the 27th National Summer Crops Workshop, held at Rampur, Chitawan, 18-20 April 2013, Vol. II / Giri, Y.P.
Title : Population dynamics of insect pests of rice at RARS Tarahara: a light trap survelliance Material Type: printed text Authors: G.S Bhandari, Editor ; B. Chaudhary ; B Sapkota, Author ; D.N Mahato, Author ; S.K Upadhyaya, Author Pagination: 310-314 p. Keywords: Beneficial organism ; Economic threshold level insect pests population dynamics Abstract: Economic loss due to insect pests is one of the major problems for rice production. There
may be a lot of beneficial insects present in the field. Fanners apply chemical pesticides
heavily that may destroy beneficial organisms. There is immense need of studying the
seasonal occurrence of harmful and beneficial insects for their proper management. A
survey of major insect pests of rice was conducted for three years from 20 lO to 2012 with
the objective of assessing seasonal occurrence of major insect pests of rice and beneficial
insects to plan future insect management strategy. Abundance records of insects namely
White Stem Borer, Yellow Stem Borer, Pink Stem Borer, Leaf Folder, Case Worm, Rice
Gundhi Bug and Tiger Beetle were made from January 2010 to December 2012. The study
revealed the overall abundance of pink stem borer as highest followed by yellow stem borer
and Gundhi bug. The relation between population buildup of rice gundhi bug and tiger
beetle found non-significant. The peak population of gundhi bug recorded in the August to
November. However, peak population of tiger beetle was from July to August thus,
reduction in population of gundhi bug was non-significant during its peak period. The study
suggests that the insect management priority be set as per the abundance rank of the studied
insect pests. The study recommends that the judicious use of pesticides be followed for
insect pest management to have increased population of beneficial natural enemies.Link for e-copy: http://elibrary.narc.gov.np/?r=959 Population dynamics of insect pests of rice at RARS Tarahara: a light trap survelliance [printed text] / G.S Bhandari, Editor ; B. Chaudhary ; B Sapkota, Author ; D.N Mahato, Author ; S.K Upadhyaya, Author . - [s.d.] . - 310-314 p.
in Proceedings of the 27th National Summer Crops Workshop, held at Rampur, Chitawan, 18-20 April 2013, Vol. II / Giri, Y.P.
Keywords: Beneficial organism ; Economic threshold level insect pests population dynamics Abstract: Economic loss due to insect pests is one of the major problems for rice production. There
may be a lot of beneficial insects present in the field. Fanners apply chemical pesticides
heavily that may destroy beneficial organisms. There is immense need of studying the
seasonal occurrence of harmful and beneficial insects for their proper management. A
survey of major insect pests of rice was conducted for three years from 20 lO to 2012 with
the objective of assessing seasonal occurrence of major insect pests of rice and beneficial
insects to plan future insect management strategy. Abundance records of insects namely
White Stem Borer, Yellow Stem Borer, Pink Stem Borer, Leaf Folder, Case Worm, Rice
Gundhi Bug and Tiger Beetle were made from January 2010 to December 2012. The study
revealed the overall abundance of pink stem borer as highest followed by yellow stem borer
and Gundhi bug. The relation between population buildup of rice gundhi bug and tiger
beetle found non-significant. The peak population of gundhi bug recorded in the August to
November. However, peak population of tiger beetle was from July to August thus,
reduction in population of gundhi bug was non-significant during its peak period. The study
suggests that the insect management priority be set as per the abundance rank of the studied
insect pests. The study recommends that the judicious use of pesticides be followed for
insect pest management to have increased population of beneficial natural enemies.Link for e-copy: http://elibrary.narc.gov.np/?r=959 E-copies
http://nkcs.org.np/narc/dl/?r=959URL
in Proceedings of the 27th National Summer Crops Workshop, held at Rampur, Chitawan, 18-20 April 2013, Vol. II / Giri, Y.P.
Title : Testing spatial co-integration in regional rice markets of eastern terai region of Nepal Material Type: printed text Authors: B Sapkota, Editor ; Gauchan, D., Author ; B. Chaudhary, Author ; S.K Upadhyaya, Author Pagination: 369-372 p. Keywords: Arbitrage ; Eastern terai region rice spatial co-integration trade Abstract: The spatial integration of the rice market is of major importance in Nepal, given the
difficult terrain, the long distances between market sources of the Terai and the hill
districts, and the implications of these factors for food security. An assessment of spatial
integration across different rice markets in eastern terai region ofNepal was done with the
aim of recommending government with appropriate policy measures to arbitrage
agricultural trade and improving public distribution system for contributing to overall food
security. Monthly average coarse rice price series o~ three major rice marketing networks
namely Jhapa, Biratnagar and Lahan were collected for five years (2005-2010) from
secondary sources. The Augmented Dickey Fuller (ADF) test showed that the price series
were stationery. The Vector Error Correction model estimated that price series of
Biratnagar-Jhapa pair were co-integrated whereas the same of Lahan-Jhapa and LahanBiratnagar
pairs were not co-integrated. The results indicated that the nearby rice markets
were co-integrated and the markets located relatively far apart were not. The price
trailsmission was found inefficient between the markets.Link for e-copy: http://elibrary.narc.gov.np/?r=969 Testing spatial co-integration in regional rice markets of eastern terai region of Nepal [printed text] / B Sapkota, Editor ; Gauchan, D., Author ; B. Chaudhary, Author ; S.K Upadhyaya, Author . - [s.d.] . - 369-372 p.
in Proceedings of the 27th National Summer Crops Workshop, held at Rampur, Chitawan, 18-20 April 2013, Vol. II / Giri, Y.P.
Keywords: Arbitrage ; Eastern terai region rice spatial co-integration trade Abstract: The spatial integration of the rice market is of major importance in Nepal, given the
difficult terrain, the long distances between market sources of the Terai and the hill
districts, and the implications of these factors for food security. An assessment of spatial
integration across different rice markets in eastern terai region ofNepal was done with the
aim of recommending government with appropriate policy measures to arbitrage
agricultural trade and improving public distribution system for contributing to overall food
security. Monthly average coarse rice price series o~ three major rice marketing networks
namely Jhapa, Biratnagar and Lahan were collected for five years (2005-2010) from
secondary sources. The Augmented Dickey Fuller (ADF) test showed that the price series
were stationery. The Vector Error Correction model estimated that price series of
Biratnagar-Jhapa pair were co-integrated whereas the same of Lahan-Jhapa and LahanBiratnagar
pairs were not co-integrated. The results indicated that the nearby rice markets
were co-integrated and the markets located relatively far apart were not. The price
trailsmission was found inefficient between the markets.Link for e-copy: http://elibrary.narc.gov.np/?r=969 E-copies
http://nkcs.org.np/narc/dl/?r=969URL
