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Author S. Marahatta |
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Refine your search Apply to external sourcesAssessment of site specific nutrient management on the productivity of wheat at Bhairahawa, Nepal / M. Yadav in Journal of Agriculture and Forestry University, Volume 4 (2020)
Title : Assessment of site specific nutrient management on the productivity of wheat at Bhairahawa, Nepal Material Type: printed text Authors: M. Yadav, Author ; Sanjit Kumar Saha, Author ; A. P. Regmi, Author ; S. Marahatta, Author Publication Date: 2020 Article on page: 77-82 p. Languages : English (eng) Keywords: Site specific nutrient management, wheat productivity, fertilizer, micro-nutrient Abstract: Low and unbalanced fertilizer application rate are the major factors contributing to the poor yield of wheat in Nepal. The Site
Specific Nutrient Management (SSNM) provides the field specific recommendations in a cost effective and precise manner.
A field experiment was done at National Wheat Research Program (NWRP), Bhairahawa, Rupandehi, Nepal during 2019-
20 to evaluate the site specific nutrient management approaches in order to enhance wheat productivity. The SSNM dose
was determined at NWRP by using omission plot techniques. The calculated SSNM dose (148:65:71 N: P2
O5
:K2
O kg ha-1),
was compared with SSNM + Zn + B, (148:65:71:5:1 N: P2
O5
:K2
O Zn : B kg ha-1), Research recommended dose (RRD,
150:50:50 N: P2
O5
:K2
O kg ha-1); National recommended dose (NRD, 100:50:25 N: P2
O5
:K2
O kg ha-1), Nutrients expert dose
(NED,110:50:73 N: P2
O5
:K2
O kg ha-1), and farmers dose (FD, 80: 40:15 N: P2
O5
:K2
O kg ha-1) in a RCB design with four
replications. The data on growth, yield attributes and yield were collected and analyzed using Genstat Statistical package.
Results showed that research recommended dose (RRD) along with SSNM dose and SSNM +Zn +B were statistically similar
(p>0.05), but these treatments were comparatively superior over rest of the treatments for yield attributes and yield. Hence
it can be concluded that wheat yield can be improved through adoption of SSNM and RRD of fertilizers at Bhairahawa
condition.Link for e-copy: https://afu.edu.np/sites/default/files/Assessment%20of%20site%20specific%20nutri [...]
in Journal of Agriculture and Forestry University > Volume 4 (2020) . - 77-82 p.[article] Assessment of site specific nutrient management on the productivity of wheat at Bhairahawa, Nepal [printed text] / M. Yadav, Author ; Sanjit Kumar Saha, Author ; A. P. Regmi, Author ; S. Marahatta, Author . - 2020 . - 77-82 p.
Languages : English (eng)
in Journal of Agriculture and Forestry University > Volume 4 (2020) . - 77-82 p.
Keywords: Site specific nutrient management, wheat productivity, fertilizer, micro-nutrient Abstract: Low and unbalanced fertilizer application rate are the major factors contributing to the poor yield of wheat in Nepal. The Site
Specific Nutrient Management (SSNM) provides the field specific recommendations in a cost effective and precise manner.
A field experiment was done at National Wheat Research Program (NWRP), Bhairahawa, Rupandehi, Nepal during 2019-
20 to evaluate the site specific nutrient management approaches in order to enhance wheat productivity. The SSNM dose
was determined at NWRP by using omission plot techniques. The calculated SSNM dose (148:65:71 N: P2
O5
:K2
O kg ha-1),
was compared with SSNM + Zn + B, (148:65:71:5:1 N: P2
O5
:K2
O Zn : B kg ha-1), Research recommended dose (RRD,
150:50:50 N: P2
O5
:K2
O kg ha-1); National recommended dose (NRD, 100:50:25 N: P2
O5
:K2
O kg ha-1), Nutrients expert dose
(NED,110:50:73 N: P2
O5
:K2
O kg ha-1), and farmers dose (FD, 80: 40:15 N: P2
O5
:K2
O kg ha-1) in a RCB design with four
replications. The data on growth, yield attributes and yield were collected and analyzed using Genstat Statistical package.
Results showed that research recommended dose (RRD) along with SSNM dose and SSNM +Zn +B were statistically similar
(p>0.05), but these treatments were comparatively superior over rest of the treatments for yield attributes and yield. Hence
it can be concluded that wheat yield can be improved through adoption of SSNM and RRD of fertilizers at Bhairahawa
condition.Link for e-copy: https://afu.edu.np/sites/default/files/Assessment%20of%20site%20specific%20nutri [...]
Title : Comparative economics of maize grain and seed production in Okhaldhunga, Nepal Material Type: printed text Authors: P. R. Dulal, Author ; S. Marahatta, Author Publication Date: 2020 Article on page: 129-132 p. Languages : English (eng) Keywords: Maize seed, economics, production problems, grain Abstract: Maize (Zea mays L.) cultivation is very popular in Nepal. Basically, in the rural hills of Nepal such as Okhaldhunga, it
dominates any other crop production. This study was done to for a comparative assessment of economics, marketing, and
to identify major problems of maize seed and grain production in hilly eastern district of Okhaldhunga during June of
2017. The data were obtained by the interview of 66 purposively selected producers (33 each of maize grain and seed
producers) with the use of pre-tested semi-structured questionnaire. Both the grain and seed producers were similar in terms
of socio-demographic characteristics and marketing accessibilities, but the seed producers were significantly benefited from
the trainings, extension services, and credit facilities despite having comparatively small size of land holding (0.14 ha) than
the grain producers. The inputs (manures, fertilizers, and the seed) contributed 48% and 50% of the total cost incurred for
grain and seed production, respectively whereas the pre-sowing and sowing activities contributed more than 77% of cost
in both the cases. In spite of higher cost for seed production, the benefit cost ratio of seed production was higher (1.52)
than grain production (1.13). Findings also revealed that only 24% of the total harvest was processed and marketed as seed
whereas using optimum quantity (66% middle portion of the cob) for seed production could further increase the income by
23.35%. The major production problems were scarce farm labor followed by lack of infrastructures, while low seasonal price
followed by low volume of production ranked the first and second most important marketing related problems. Subsidies
on the agri-inputs, timely availability of inputs, and encouragement of the youth towards agri-enterprise via various youth
oriented programs can be done to overcome these problems.Link for e-copy: https://afu.edu.np/sites/default/files/Comparative%20economics%20of%20maize%20gr [...]
in Journal of Agriculture and Forestry University > Volume 4 (2020) . - 129-132 p.[article] Comparative economics of maize grain and seed production in Okhaldhunga, Nepal [printed text] / P. R. Dulal, Author ; S. Marahatta, Author . - 2020 . - 129-132 p.
Languages : English (eng)
in Journal of Agriculture and Forestry University > Volume 4 (2020) . - 129-132 p.
Keywords: Maize seed, economics, production problems, grain Abstract: Maize (Zea mays L.) cultivation is very popular in Nepal. Basically, in the rural hills of Nepal such as Okhaldhunga, it
dominates any other crop production. This study was done to for a comparative assessment of economics, marketing, and
to identify major problems of maize seed and grain production in hilly eastern district of Okhaldhunga during June of
2017. The data were obtained by the interview of 66 purposively selected producers (33 each of maize grain and seed
producers) with the use of pre-tested semi-structured questionnaire. Both the grain and seed producers were similar in terms
of socio-demographic characteristics and marketing accessibilities, but the seed producers were significantly benefited from
the trainings, extension services, and credit facilities despite having comparatively small size of land holding (0.14 ha) than
the grain producers. The inputs (manures, fertilizers, and the seed) contributed 48% and 50% of the total cost incurred for
grain and seed production, respectively whereas the pre-sowing and sowing activities contributed more than 77% of cost
in both the cases. In spite of higher cost for seed production, the benefit cost ratio of seed production was higher (1.52)
than grain production (1.13). Findings also revealed that only 24% of the total harvest was processed and marketed as seed
whereas using optimum quantity (66% middle portion of the cob) for seed production could further increase the income by
23.35%. The major production problems were scarce farm labor followed by lack of infrastructures, while low seasonal price
followed by low volume of production ranked the first and second most important marketing related problems. Subsidies
on the agri-inputs, timely availability of inputs, and encouragement of the youth towards agri-enterprise via various youth
oriented programs can be done to overcome these problems.Link for e-copy: https://afu.edu.np/sites/default/files/Comparative%20economics%20of%20maize%20gr [...]
Title : Ecological weed management practices and seed bed preparation in sub-humid condition of Chitwan, Nepal Material Type: printed text Authors: S. Marahatta, Author ; P. Gyawali, Author ; Sanjit Kumar Saha, Author ; Theer Bahadur Karki, Author Publication Date: 2017 Article on page: 89-101 p. Languages : English (eng) Keywords: hand weeding, sesbania co-culture, stale seed bed, weed index Abstract: The weeds are a major constraint of dry-direct seeded rice (DDSR) due to change in establishment methods and shifting weed flora towards competitive grasses and sedges. For optimizing the yield of DDSR through environmental friendly weed management practices, two field experiments were conducted during the monsoon season of 2014 on Chitwan, Nepal. First experiment was done
using a strip plot design to find the optimum seed rate and killing date of sesbania under ricesesbania co-culture whereas the second experiment was done by using a split plot to observe the efficiency of stale seed bed for weed control and to identify the best integrated weed management practice. The optimum seed rate of sesbania was 102 kg ha-1 and killing dates was 32 days. The sesbania co-culture with 100 kg ha-1 when killed at 28 days had produced significantly higher grain yield than sole Bispyribac Na application, and only 4.79% yield was loss than farmers’ practice of two hand weeding. In contrary to weed free, Pendimethalin followed by Bispyribac Na application and Pendimethalin followed by 2,4-D application produced statistically similar yield followed by sesbania co-culture with 100 kg seeds and killing at 28 days. During the monsoon rice, the
effectiveness of stale seed bed was not much greater (0.37%) than the normal seed bed.Link for e-copy: https://afu.edu.np/sites/default/files/Ecological_weed_management_practices_and_ [...]
in Journal of Agriculture and Forestry University > Volume 1 (2017) . - 89-101 p.[article] Ecological weed management practices and seed bed preparation in sub-humid condition of Chitwan, Nepal [printed text] / S. Marahatta, Author ; P. Gyawali, Author ; Sanjit Kumar Saha, Author ; Theer Bahadur Karki, Author . - 2017 . - 89-101 p.
Languages : English (eng)
in Journal of Agriculture and Forestry University > Volume 1 (2017) . - 89-101 p.
Keywords: hand weeding, sesbania co-culture, stale seed bed, weed index Abstract: The weeds are a major constraint of dry-direct seeded rice (DDSR) due to change in establishment methods and shifting weed flora towards competitive grasses and sedges. For optimizing the yield of DDSR through environmental friendly weed management practices, two field experiments were conducted during the monsoon season of 2014 on Chitwan, Nepal. First experiment was done
using a strip plot design to find the optimum seed rate and killing date of sesbania under ricesesbania co-culture whereas the second experiment was done by using a split plot to observe the efficiency of stale seed bed for weed control and to identify the best integrated weed management practice. The optimum seed rate of sesbania was 102 kg ha-1 and killing dates was 32 days. The sesbania co-culture with 100 kg ha-1 when killed at 28 days had produced significantly higher grain yield than sole Bispyribac Na application, and only 4.79% yield was loss than farmers’ practice of two hand weeding. In contrary to weed free, Pendimethalin followed by Bispyribac Na application and Pendimethalin followed by 2,4-D application produced statistically similar yield followed by sesbania co-culture with 100 kg seeds and killing at 28 days. During the monsoon rice, the
effectiveness of stale seed bed was not much greater (0.37%) than the normal seed bed.Link for e-copy: https://afu.edu.np/sites/default/files/Ecological_weed_management_practices_and_ [...]
Title : Effect of Trichoderma isolates on Sclerotium rolfsii Sacc Material Type: printed text Authors: Pramila Adhikari, Author ; S. M. Shrestha, Author ; H. K. Manandhar, Author ; S. Marahatta, Author Publication Date: 2022 Article on page: 299-310 p. Languages : English (eng) Keywords: Parasitization, Sclerotium rolfsii, sclerotia, Trichoderma Abstract: Sclerotium rolfsii Sacc. is one of the most important plant pathogens commonly causing root rot, stem rot, wilt and
foot rot in various crop species. A wide range of host, profuse mycelial growth, and ability to produce persistent
sclerotia makes them difficult to control. Biological control using Trichoderma could provide a sustainable tool
for the management of diseases caused by S. rolfsii. One hundred four Trichoderma isolates were evaluated
against S. rolfsii in vitro by dual culture. Of them, 30 Trichoderma isolates found effective were selected to study
parasitization of sclerotia of S. rolfsii in vitro. Similarly, four Trichoderma isolates found effective in vitro were
used to study their ability to parasitize sclerotia of the pathogen in soil. Trichoderma isolates varied significantly
(p Trichoderma isolate T73, Forest soil had highest inhibition (96.96%), while Trichoderma isolate T49, Bhaktapur
showed the highest bio-control index (99) against S. rolfsii. Trichoderma isolates T49, Bhaktapur and T87, Forest
soil showed promising results in controlling S. rolfsii in vitro. Both isolates were also able to parasitize and reduce
the germination of sclerotia in the soil. The present study demonstrated that selected Trichoderma had potential
in controlling Sclerotium rolfsii.Link for e-copy: https://afu.edu.np/sites/default/files/Effect_of_Trichoderma_isolates_on_Sclerot [...]
in Journal of Agriculture and Forestry University > Volume 5 (2022) . - 299-310 p.[article] Effect of Trichoderma isolates on Sclerotium rolfsii Sacc [printed text] / Pramila Adhikari, Author ; S. M. Shrestha, Author ; H. K. Manandhar, Author ; S. Marahatta, Author . - 2022 . - 299-310 p.
Languages : English (eng)
in Journal of Agriculture and Forestry University > Volume 5 (2022) . - 299-310 p.
Keywords: Parasitization, Sclerotium rolfsii, sclerotia, Trichoderma Abstract: Sclerotium rolfsii Sacc. is one of the most important plant pathogens commonly causing root rot, stem rot, wilt and
foot rot in various crop species. A wide range of host, profuse mycelial growth, and ability to produce persistent
sclerotia makes them difficult to control. Biological control using Trichoderma could provide a sustainable tool
for the management of diseases caused by S. rolfsii. One hundred four Trichoderma isolates were evaluated
against S. rolfsii in vitro by dual culture. Of them, 30 Trichoderma isolates found effective were selected to study
parasitization of sclerotia of S. rolfsii in vitro. Similarly, four Trichoderma isolates found effective in vitro were
used to study their ability to parasitize sclerotia of the pathogen in soil. Trichoderma isolates varied significantly
(p Trichoderma isolate T73, Forest soil had highest inhibition (96.96%), while Trichoderma isolate T49, Bhaktapur
showed the highest bio-control index (99) against S. rolfsii. Trichoderma isolates T49, Bhaktapur and T87, Forest
soil showed promising results in controlling S. rolfsii in vitro. Both isolates were also able to parasitize and reduce
the germination of sclerotia in the soil. The present study demonstrated that selected Trichoderma had potential
in controlling Sclerotium rolfsii.Link for e-copy: https://afu.edu.np/sites/default/files/Effect_of_Trichoderma_isolates_on_Sclerot [...]
Title : Effects of spacing and weed management practices in winter maize in Rampur, Chitwan Material Type: printed text Authors: P. Gurung, Author ; S. Dhakal, Author ; S. Marahatta, Author ; J. B. Adhikari, Author Publication Date: 2020 Article on page: 77-84 p. Languages : English (eng) Keywords: Mulch, weed dynamics, weed control efficiency, weed index Abstract: Maize is sensitive to weed infestation; losses in crop yield vary from 28-100%. Manual weeding is the most dominant
method in Nepal, however, a majority of the farmers still does not adopt any specific method of weed control. An experiment
was conducted to evaluate the influence of plant spacing and weed management practices on weed dynamics and yield of
maize, during the winter season of 2016/17 at National Maize Research Program (NMRP), Rampur, Chitwan, Nepal. The
experiment was done using split plot design with three replication; main plot factor was plant density (66666 and 83333
plants/ha),and sub-plot factors was weed management practices viz. weedy check, weed-free, two hand weeding at 30 and
60 DAS, rice straw mulch, black plastic mulch, Atrazine @ 0.75 kg a.i./ha + Pendimethalin @ 0.5 kg a.i./ha, Atrazine @
0.75 kg a.i./ha + Pendimethalin @ 0.5 kg a.i./ha followed by hand weeding at 30 DAS, and Atrazine @ 0.75 kg a.i. /ha +
Pendimethalin @ 0.5 kg a.i./ha followed by 2,4-D @1.5 L a.i./ha at 35 DAS. The plant density did not show significant effect
on weed density, weed dry weight, Weed Control Efficiency, Weed Index, and grain yield. Use of black plastic mulch was the
most effective to reduce weed density and dry weight. The higher Weed Control Efficiency (97.7, 96.4, 95.9 and 89.6% at 30,
60, 90 DAS and at harvest), and lower Weed Index (-2.9%) were also found with the use of black plastic mulch. As compared
to weed-free condition, weed caused grain yield loss up to 61.5% in the weedy condition. Accordingly, highest grain yield
was achieved with the use of black plastic mulch (5.1 t ha-1) followed by weed-free (5.0 t ha-1) condition and with the use of
rice straw as mulch (4.7 t ha-1). This information could be useful in developing weed management packages in maize.Link for e-copy: https://afu.edu.np/sites/default/files/9._Effects_of_spacing_and_weed_management [...]
in Journal of Agriculture and Forestry University > Volume 3 (2019) . - 77-84 p.[article] Effects of spacing and weed management practices in winter maize in Rampur, Chitwan [printed text] / P. Gurung, Author ; S. Dhakal, Author ; S. Marahatta, Author ; J. B. Adhikari, Author . - 2020 . - 77-84 p.
Languages : English (eng)
in Journal of Agriculture and Forestry University > Volume 3 (2019) . - 77-84 p.
Keywords: Mulch, weed dynamics, weed control efficiency, weed index Abstract: Maize is sensitive to weed infestation; losses in crop yield vary from 28-100%. Manual weeding is the most dominant
method in Nepal, however, a majority of the farmers still does not adopt any specific method of weed control. An experiment
was conducted to evaluate the influence of plant spacing and weed management practices on weed dynamics and yield of
maize, during the winter season of 2016/17 at National Maize Research Program (NMRP), Rampur, Chitwan, Nepal. The
experiment was done using split plot design with three replication; main plot factor was plant density (66666 and 83333
plants/ha),and sub-plot factors was weed management practices viz. weedy check, weed-free, two hand weeding at 30 and
60 DAS, rice straw mulch, black plastic mulch, Atrazine @ 0.75 kg a.i./ha + Pendimethalin @ 0.5 kg a.i./ha, Atrazine @
0.75 kg a.i./ha + Pendimethalin @ 0.5 kg a.i./ha followed by hand weeding at 30 DAS, and Atrazine @ 0.75 kg a.i. /ha +
Pendimethalin @ 0.5 kg a.i./ha followed by 2,4-D @1.5 L a.i./ha at 35 DAS. The plant density did not show significant effect
on weed density, weed dry weight, Weed Control Efficiency, Weed Index, and grain yield. Use of black plastic mulch was the
most effective to reduce weed density and dry weight. The higher Weed Control Efficiency (97.7, 96.4, 95.9 and 89.6% at 30,
60, 90 DAS and at harvest), and lower Weed Index (-2.9%) were also found with the use of black plastic mulch. As compared
to weed-free condition, weed caused grain yield loss up to 61.5% in the weedy condition. Accordingly, highest grain yield
was achieved with the use of black plastic mulch (5.1 t ha-1) followed by weed-free (5.0 t ha-1) condition and with the use of
rice straw as mulch (4.7 t ha-1). This information could be useful in developing weed management packages in maize.Link for e-copy: https://afu.edu.np/sites/default/files/9._Effects_of_spacing_and_weed_management [...]
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