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Author N.K Shakya |
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Title : Crop residue management in sustaining production of rice-wheat system Material Type: printed text Authors: J. Tripathi, Author ; T.P Kharel, Author ; Duxbury J.M, Author ; N.K Shakya, Author ; J Lauren, Author Pagination: 166-173 p. Languages : English (eng) Abstract: An experiment on crop residue management in rice-wheat system conducted for four successive years ( 1998/99-200 I /02) revealed that residue incorporation with recommended N PK increased both grain yield of rice and wheat crops when 20 kg additional nitrogen was applied at the time of straw incorporation. Mulched treatment with recommended N PK a so produced better yield in both rice and wheat crops. Residue incorporated with recommended N PK only produced similar or less yield to that of recommended NPK treatment only. However, the effects of residue management were seen only after the second year. Thus it is expected that residue management in rice-wheat system will be beneficial in the long run to improve productivity and sustainability of the rice-wheat system.
Link for e-copy: http://elibrary.narc.gov.np/?r=2723 Crop residue management in sustaining production of rice-wheat system [printed text] / J. Tripathi, Author ; T.P Kharel, Author ; Duxbury J.M, Author ; N.K Shakya, Author ; J Lauren, Author . - [s.d.] . - 166-173 p.
Languages : English (eng)
Abstract: An experiment on crop residue management in rice-wheat system conducted for four successive years ( 1998/99-200 I /02) revealed that residue incorporation with recommended N PK increased both grain yield of rice and wheat crops when 20 kg additional nitrogen was applied at the time of straw incorporation. Mulched treatment with recommended N PK a so produced better yield in both rice and wheat crops. Residue incorporated with recommended N PK only produced similar or less yield to that of recommended NPK treatment only. However, the effects of residue management were seen only after the second year. Thus it is expected that residue management in rice-wheat system will be beneficial in the long run to improve productivity and sustainability of the rice-wheat system.
Link for e-copy: http://elibrary.narc.gov.np/?r=2723 E-copies
http://nkcs.org.np/narc/dl/?r=2723URLDirect seeding : an emerging resouce conserving technology for rice cultivation in the rice-wheat system / J. Tripathi
in Rice research in Nepal : Proceedings of 24th National Summer Crops Research Workshop, Khumaltar, Lalitpur, 30-31 June 2004 / Adhikari, N.P.
Title : Direct seeding : an emerging resouce conserving technology for rice cultivation in the rice-wheat system Material Type: printed text Authors: J. Tripathi ; Bhatta, M.R., Author ; S Justise, Author ; N.K Shakya, Author Pagination: 273-283 p. Languages : English (eng) Abstract: (DSR) has emerged as a viable alternative to transplanting (l'P R). Direct seeding with
different RCTs equipments such as power tiller drill (PTD) and zero till drill (ZTD) improved
the yield potential of DSR coupled with additional advantages of reduced or zero till system
for improved productivity, profitability and sustainability of the rice-wheat system.
Several experiments were conducted during 2002103 and 2003104 in the farmer fields of
Rupandehi districts following the participatory approach to evaluate the performance of
different DSR over conventional TP R. An experiment conducted in different farmers 'field in
2002103 revealed that PTD-DSR produced significantly higher yield over HBD-DSR (hand
broadcasted dry DSR) and marginally higher than the conventional TPR and HBW-DSR
(hand broadcasted wet.DSR). A couple of DSR experiments were conducted in the last rice
season (2003/04) on RCTs along with other methods of DSR and TP R. In one experiment
PTD-DSR was compared with Wet-DSR and conventional TPR and in other one ZTD-DSR
was eva.7;'.Qted with TPR including two rice varieties (Radha-4 and Sabitri). In first
experiment, PTD-DSR was found significantly superior to TP R and marginally superior to
HBW-DSR. In second experiment, ZTD-DSR proved significant superiority over TPR with
both of the varieties. However, Radh-4 produced comparatively higher yield than Sabitri in
both ZTD-DSR and TPR. Partial budgeting based on farmers interview and crop cut
sampling of above practices revealed that PTD-DSR, ZTD-DSR and HBW-DSR provided
33%, 22% and 21% higher net return respectively as compared to conventional TPR. The
higher economic return from all three direct seeding methods attributed to saving in total
variable costs and higher yield. Direct seeding with RCT equipments proved beneficial as
compared to conventional TPR qnd HBD-DSR. Broadcasted wet DSR (HBW-DSR) could
also be a viable option in the case where, RCT equipments are not available.Link for e-copy: http://elibrary.narc.gov.np/?r=1112 Direct seeding : an emerging resouce conserving technology for rice cultivation in the rice-wheat system [printed text] / J. Tripathi ; Bhatta, M.R., Author ; S Justise, Author ; N.K Shakya, Author . - [s.d.] . - 273-283 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)
Abstract: (DSR) has emerged as a viable alternative to transplanting (l'P R). Direct seeding with
different RCTs equipments such as power tiller drill (PTD) and zero till drill (ZTD) improved
the yield potential of DSR coupled with additional advantages of reduced or zero till system
for improved productivity, profitability and sustainability of the rice-wheat system.
Several experiments were conducted during 2002103 and 2003104 in the farmer fields of
Rupandehi districts following the participatory approach to evaluate the performance of
different DSR over conventional TP R. An experiment conducted in different farmers 'field in
2002103 revealed that PTD-DSR produced significantly higher yield over HBD-DSR (hand
broadcasted dry DSR) and marginally higher than the conventional TPR and HBW-DSR
(hand broadcasted wet.DSR). A couple of DSR experiments were conducted in the last rice
season (2003/04) on RCTs along with other methods of DSR and TP R. In one experiment
PTD-DSR was compared with Wet-DSR and conventional TPR and in other one ZTD-DSR
was eva.7;'.Qted with TPR including two rice varieties (Radha-4 and Sabitri). In first
experiment, PTD-DSR was found significantly superior to TP R and marginally superior to
HBW-DSR. In second experiment, ZTD-DSR proved significant superiority over TPR with
both of the varieties. However, Radh-4 produced comparatively higher yield than Sabitri in
both ZTD-DSR and TPR. Partial budgeting based on farmers interview and crop cut
sampling of above practices revealed that PTD-DSR, ZTD-DSR and HBW-DSR provided
33%, 22% and 21% higher net return respectively as compared to conventional TPR. The
higher economic return from all three direct seeding methods attributed to saving in total
variable costs and higher yield. Direct seeding with RCT equipments proved beneficial as
compared to conventional TPR qnd HBD-DSR. Broadcasted wet DSR (HBW-DSR) could
also be a viable option in the case where, RCT equipments are not available.Link for e-copy: http://elibrary.narc.gov.np/?r=1112 E-copies
http://nkcs.org.np/narc/dl/?r=1112URL
in Rice research in Nepal : Proceedings of 24th National Summer Crops Research Workshop, Khumaltar, Lalitpur, 30-31 June 2004 / Adhikari, N.P.
Title : On-farm and on-station evaluation of system of rice intesification (SRI) for increased production of rice Material Type: printed text Authors: J. Tripathi ; Bhatta, M.R., Author ; S Justise, Author ; R.B Neupane, Author ; N.K Shakya, Author ; B.R Ghimire, Author ; T.B Chhetri, Author Pagination: 243-252 p. Languages : English (eng) Keywords: Rice ; Date of seeding seedling age retransplanting herbicides spacing and N levels Abstract: System of Rice Intensification (SRI) is a technique of agronomic manipulation to improve
physiological activities of rice plant for increased rice yield SRI involves transplanting of young
and single seedling in comparatively wider spacing with provided irrigation, weed and nutrient
management practices. The results of different SRI experiments conducted in 2001102, 2002103
and in 2003/04 indicated tremendous scope to increase rice yield if SRI practices adopted
properly. Three years results suggested that comparatively longer duration varieties with closer
spacing (20X20 to 30X30cm) did better under SRI techniques when provided weeds were
controlled effectively. Three rotary weeding followed by hand weeding found effective to control
weeds. Experimental results suggested that ten days old seedlings can be transplanted either
single or double seedlings/hill. No significant differences in time gap between uprooting to
transplanting suggested that transplanting within 15 minutes from uprooting is not so necessary if
seedlings could be protected (both root & shoot) form drying effects. Weeds were noticed as
major problem in SRI particularly with wider spacing as compared to farmers practice. However,
water management is another issue need to be shorted out as frequent drying and wetting had
little deleterious effect on grain yield and also increased the cost of irrigation. ·Link for e-copy: http://elibrary.narc.gov.np/?r=1109 On-farm and on-station evaluation of system of rice intesification (SRI) for increased production of rice [printed text] / J. Tripathi ; Bhatta, M.R., Author ; S Justise, Author ; R.B Neupane, Author ; N.K Shakya, Author ; B.R Ghimire, Author ; T.B Chhetri, Author . - [s.d.] . - 243-252 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: Rice ; Date of seeding seedling age retransplanting herbicides spacing and N levels Abstract: System of Rice Intensification (SRI) is a technique of agronomic manipulation to improve
physiological activities of rice plant for increased rice yield SRI involves transplanting of young
and single seedling in comparatively wider spacing with provided irrigation, weed and nutrient
management practices. The results of different SRI experiments conducted in 2001102, 2002103
and in 2003/04 indicated tremendous scope to increase rice yield if SRI practices adopted
properly. Three years results suggested that comparatively longer duration varieties with closer
spacing (20X20 to 30X30cm) did better under SRI techniques when provided weeds were
controlled effectively. Three rotary weeding followed by hand weeding found effective to control
weeds. Experimental results suggested that ten days old seedlings can be transplanted either
single or double seedlings/hill. No significant differences in time gap between uprooting to
transplanting suggested that transplanting within 15 minutes from uprooting is not so necessary if
seedlings could be protected (both root & shoot) form drying effects. Weeds were noticed as
major problem in SRI particularly with wider spacing as compared to farmers practice. However,
water management is another issue need to be shorted out as frequent drying and wetting had
little deleterious effect on grain yield and also increased the cost of irrigation. ·Link for e-copy: http://elibrary.narc.gov.np/?r=1109 E-copies
http://nkcs.org.np/narc/dl/?r=1109URL
http://nkcs.org.np/narc/dl/?r=1109URL
Title : Resource conservation technologies for wheat production in rice-wheat system Material Type: printed text Authors: J. Tripathi, Author ; Bhandari, D., Author ; Justice, Scott, Author ; N.K Shakya, Author ; T.P Kharel, Author ; R Sishodia, Author Pagination: 157-165 p. Languages : English (eng) Abstract: The rice-wheat cropping pattern is a dominant production system that contributes immensely to the food security of the country. Improving the productivity and sustainability is crucial. The resource conservation technologies are found to be effective as they offer a great deal of promise in reducing the crop establishment cost increase input use efficiency and providing environmental benefits………………….
Link for e-copy: http://elibrary.narc.gov.np/?r=2721 Resource conservation technologies for wheat production in rice-wheat system [printed text] / J. Tripathi, Author ; Bhandari, D., Author ; Justice, Scott, Author ; N.K Shakya, Author ; T.P Kharel, Author ; R Sishodia, Author . - [s.d.] . - 157-165 p.
Languages : English (eng)
Abstract: The rice-wheat cropping pattern is a dominant production system that contributes immensely to the food security of the country. Improving the productivity and sustainability is crucial. The resource conservation technologies are found to be effective as they offer a great deal of promise in reducing the crop establishment cost increase input use efficiency and providing environmental benefits………………….
Link for e-copy: http://elibrary.narc.gov.np/?r=2721 E-copies
http://nkcs.org.np/narc/dl/?r=2721URL
Title : Tillage and crop establishment interactions in rice-wheat lowland ecosystem Material Type: printed text Authors: J. Tripathi, Author ; Hobbs, P.R., Author ; Duxbury J.M, Author ; N.K Shakya, Author ; J Lauren, Author ; T.P Kharel, Author Pagination: 174-181 p. Languages : English (eng) Abstract: A field experiment was conducted for 5 successive years during 1997/98 from 2001/2002 to study the interaction effects of different tillage and crop establishment techniques on the productivity of rice and wheat crops in a system perspective under lower and middle wet land ecosystem. The experiment consists of eight treatment combinations derived from two tillage practices……………………..
Link for e-copy: http://elibrary.narc.gov.np/?r=2724 Tillage and crop establishment interactions in rice-wheat lowland ecosystem [printed text] / J. Tripathi, Author ; Hobbs, P.R., Author ; Duxbury J.M, Author ; N.K Shakya, Author ; J Lauren, Author ; T.P Kharel, Author . - [s.d.] . - 174-181 p.
Languages : English (eng)
Abstract: A field experiment was conducted for 5 successive years during 1997/98 from 2001/2002 to study the interaction effects of different tillage and crop establishment techniques on the productivity of rice and wheat crops in a system perspective under lower and middle wet land ecosystem. The experiment consists of eight treatment combinations derived from two tillage practices……………………..
Link for e-copy: http://elibrary.narc.gov.np/?r=2724 E-copies
http://nkcs.org.np/narc/dl/?r=2724URL
