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8 result(s) search for keyword(s) 'nitrogen,' 
Refine your searchAssociative Nitrogen Fixation in Lowland Rice / Raj K. Shrestha in Nepal Agriculture Research Journal, Vol. 6 (2005)
Title : Associative Nitrogen Fixation in Lowland Rice Material Type: printed text Authors: Raj K. Shrestha, Author ; Maskey, S.L., Author Publication Date: 2005 Article on page: 112-121 p General note: Review paper Languages : English (eng) Keywords: Key words: Fertilizer, fixation, nitrogen, rice Abstract: Nitrogen (N), a most limiting nutrient, is the input required in the largest quantity for lowland
rice production. The concerns on N economy and efficiency and its impact on environment have
renewed interest in exploring alternative or supplementary N source for sustainable agriculture.
Several studies have indicated the existence of significant rice genotypic differences in N2
fixation stimulating traits (NFS). Rice genotypes with high NFS are desirable because they add N to
the soil-water-plant system without additional farm inputs and reduce dependence on fertilizer.
Large genotypic differences in percent N derived from air (% Ndfa) like 1.5% in Abang Basur, medium
maturing genotype, to 21% in Oking Seroni, late maturing genotype, indicates potential of isolating
genotypes with high NFS for sustainable agriculture. The exogenous supply of nitrogenous fertilizer
to lowland rice significantly inhibited N fixation but improved plant growth. Where as phosphorous
fertilizer did not affect atom % 15N excess and % Ndfa significantly but slight decrease in atom %
15N excess and increase in N2 fixation was observed. Inhibitory effect of exogenous supply of N
fertilizer indicates limited potential of associative N2 fixation to significantly benefit
agriculture. Farmers would have to withhold N fertilizer from their rice crop in order to increase
biological N2-fixation associated with rice. If they do such practice the plants will be N
deficient and might have a lower yield. However, the development of N fixation in response to a
deficiency of available N may well be an integral part of the N cycle of natural ecosystem and low
input farming system there by maintaining a N balance in the environment.Link for e-copy: http://elibrary.narc.gov.np/?r=70
in Nepal Agriculture Research Journal > Vol. 6 (2005) . - 112-121 p[article] Associative Nitrogen Fixation in Lowland Rice [printed text] / Raj K. Shrestha, Author ; Maskey, S.L., Author . - 2005 . - 112-121 p.
Review paper
Languages : English (eng)
in Nepal Agriculture Research Journal > Vol. 6 (2005) . - 112-121 p
Keywords: Key words: Fertilizer, fixation, nitrogen, rice Abstract: Nitrogen (N), a most limiting nutrient, is the input required in the largest quantity for lowland
rice production. The concerns on N economy and efficiency and its impact on environment have
renewed interest in exploring alternative or supplementary N source for sustainable agriculture.
Several studies have indicated the existence of significant rice genotypic differences in N2
fixation stimulating traits (NFS). Rice genotypes with high NFS are desirable because they add N to
the soil-water-plant system without additional farm inputs and reduce dependence on fertilizer.
Large genotypic differences in percent N derived from air (% Ndfa) like 1.5% in Abang Basur, medium
maturing genotype, to 21% in Oking Seroni, late maturing genotype, indicates potential of isolating
genotypes with high NFS for sustainable agriculture. The exogenous supply of nitrogenous fertilizer
to lowland rice significantly inhibited N fixation but improved plant growth. Where as phosphorous
fertilizer did not affect atom % 15N excess and % Ndfa significantly but slight decrease in atom %
15N excess and increase in N2 fixation was observed. Inhibitory effect of exogenous supply of N
fertilizer indicates limited potential of associative N2 fixation to significantly benefit
agriculture. Farmers would have to withhold N fertilizer from their rice crop in order to increase
biological N2-fixation associated with rice. If they do such practice the plants will be N
deficient and might have a lower yield. However, the development of N fixation in response to a
deficiency of available N may well be an integral part of the N cycle of natural ecosystem and low
input farming system there by maintaining a N balance in the environment.Link for e-copy: http://elibrary.narc.gov.np/?r=70 Dynamics of Nitrogen and Phosphorus Application on Late Season Cauliflower Cultivation / P. P. Khatiwada ; S. Piya ; Chaudhary, B.P.
in Effects of Different Levels of Agricultural-Lime on Brinjal (Solanum Melongena L) Production in Acid Soils / B. H. Adhikary ; C. Adhikary
Title : Dynamics of Nitrogen and Phosphorus Application on Late Season Cauliflower Cultivation Material Type: printed text Authors: P. P. Khatiwada, Author ; S. Piya, Author ; Chaudhary, B.P., Author Pagination: 321-327 p. Languages : English (eng) Keywords: cauliflower, curd yield, nitrogen, phosphorus Abstract: A study to identify an appropriate dose of nitrogen and phosphorus for late season
cauliflower (May production) was accomplished in the upper mid hills of eastem Nepal.
The experiment was conducted during the two consecutive years of 2000 and 2001. Three
level of nitrogen (60, 100 and 140 kg/ha) and the same level ofphosphoms (40, 80 and 120
kglha) were tested to Kibo Giant variety mailllaining a plant spacing of 45x30 em between
and within rows. Application of a minimum level (60:40:50 N: P20 5: K20 kg/Ita) of mineral
fertiliur yielded about a double ( 12.02 t/ha) curd yield titan that of only using compost at a
rate of 30 t/ha (6.77 t/ha). Among the different combinations of Nand P205fertilizers, only
different doses of nitrogen played role on curd yield. Analysis of variance of nitrogen,
phosphorus and their illferaction showed a significant (p<. 001) effect of nitrogen and nonsignificant
effect of different levels ofphosplwrus and their interactions. Nitrogen 140 kg/ha
yielded statistically the highest ( 19.65 t/ha) curd yield, which was followed by 100 kg
nitrogen per hectare ( 16.79 t/ha). There was a positive trend of increased level of nitrogen
(y=10.96+2.9x) belt not a clear trend of phosphorus. Pre and post experiment soil and plant
analysis failed to show significant correlation among N, P20s. K20, pH and OM contellts.
The results have given new direction in relation with fertilizer management for late season
cauliflower cultivation in the upper mid hills of east em Nepal.Link for e-copy: http://elibrary.narc.gov.np/?r=550 Dynamics of Nitrogen and Phosphorus Application on Late Season Cauliflower Cultivation [printed text] / P. P. Khatiwada, Author ; S. Piya, Author ; Chaudhary, B.P., Author . - [s.d.] . - 321-327 p.
in Effects of Different Levels of Agricultural-Lime on Brinjal (Solanum Melongena L) Production in Acid Soils / B. H. Adhikary ; C. Adhikary
Languages : English (eng)
Keywords: cauliflower, curd yield, nitrogen, phosphorus Abstract: A study to identify an appropriate dose of nitrogen and phosphorus for late season
cauliflower (May production) was accomplished in the upper mid hills of eastem Nepal.
The experiment was conducted during the two consecutive years of 2000 and 2001. Three
level of nitrogen (60, 100 and 140 kg/ha) and the same level ofphosphoms (40, 80 and 120
kglha) were tested to Kibo Giant variety mailllaining a plant spacing of 45x30 em between
and within rows. Application of a minimum level (60:40:50 N: P20 5: K20 kg/Ita) of mineral
fertiliur yielded about a double ( 12.02 t/ha) curd yield titan that of only using compost at a
rate of 30 t/ha (6.77 t/ha). Among the different combinations of Nand P205fertilizers, only
different doses of nitrogen played role on curd yield. Analysis of variance of nitrogen,
phosphorus and their illferaction showed a significant (p<. 001) effect of nitrogen and nonsignificant
effect of different levels ofphosplwrus and their interactions. Nitrogen 140 kg/ha
yielded statistically the highest ( 19.65 t/ha) curd yield, which was followed by 100 kg
nitrogen per hectare ( 16.79 t/ha). There was a positive trend of increased level of nitrogen
(y=10.96+2.9x) belt not a clear trend of phosphorus. Pre and post experiment soil and plant
analysis failed to show significant correlation among N, P20s. K20, pH and OM contellts.
The results have given new direction in relation with fertilizer management for late season
cauliflower cultivation in the upper mid hills of east em Nepal.Link for e-copy: http://elibrary.narc.gov.np/?r=550 E-copies
http://nkcs.org.np/narc/dl/?r=550URL
in Advancing horticultural research for development. Proceedings of the 7th National Horticulture Seminar , Khumaltar, Lalitpur, 12-14 June 2011 (Jestha 29-31, 2068) / Paudyal, K.P.
Title : Effect of Nitrogen and Potassium Fertilizers on Yield, Storability and Processing Qualities of Potato for the Chips Material Type: printed text Authors: J.P. Gautam, Author ; M.D Sharma, Author ; B.B Khatri, Author ; Thapa, R.B., Author ; K Shrestha, Author ; D.Chaudhary, Author Pagination: 100-112 p. Languages : English (eng) Keywords: Potato, nitrogen, potash, processing qualities for chips and yield. Abstract: Field and storage experiments were conducted to find out the main effects and interactions between
different levels of nitrogen and potassium fertilizers on total yield, yield of different size grade,
storability and better processing quality for chips of potato variety Kufri Jyoti at Hattiban farm
Khumaltar and storage house of Nationai Potato Research Program (NPRP) Khumaltar and at
Balaju cold store, respectively. After harvesting and curing of potato, 5 kg of tubers weight each
tuber more than 60 gram weight were used for the storage and processing qualitY determination.
The storage experiments were conducted in CRD design with 3 replications. Plastic racks and net
bags were used for storage of potato in dark room and cold storage house, respectively. Potato was
stored for 90 days in dark room and 120 days in cold house. Laboratory analyses were carried out
at National Academy of Science and Technology (NAS1) at Lalitpur before and after storage of
potato in ordinary conditions and before immediately after removing from cold store and 15 days
after re-conditioned. Observations were recorded on yield, storage losses, sprouting, chips quality
parameters like specific gravity (SG), dry matter (DM) and reducing sugar (RS). The storage loss
and sprouting percentage was recorded at 15 days intervals of dark sore potatoes and before
storage, immediately after removing from cold and 15 days after reconditioned of cold store
potatoes. The results showed a significant effoct of N and K20 and there interaction on yield,
sprouting, weight loss percentage and quality parameters. Based on the yield and quality
parameters the combination of 150:100:60 kg N: P20 5: K20 along with 20 tons compost I ha is
found suitable for storage and production of processing chips quality potato at Lalitpur and
similar soil and environment condition of Nepal.Link for e-copy: http://elibrary.narc.gov.np/?r=1649 Effect of Nitrogen and Potassium Fertilizers on Yield, Storability and Processing Qualities of Potato for the Chips [printed text] / J.P. Gautam, Author ; M.D Sharma, Author ; B.B Khatri, Author ; Thapa, R.B., Author ; K Shrestha, Author ; D.Chaudhary, Author . - [s.d.] . - 100-112 p.
in Advancing horticultural research for development. Proceedings of the 7th National Horticulture Seminar , Khumaltar, Lalitpur, 12-14 June 2011 (Jestha 29-31, 2068) / Paudyal, K.P.
Languages : English (eng)
Keywords: Potato, nitrogen, potash, processing qualities for chips and yield. Abstract: Field and storage experiments were conducted to find out the main effects and interactions between
different levels of nitrogen and potassium fertilizers on total yield, yield of different size grade,
storability and better processing quality for chips of potato variety Kufri Jyoti at Hattiban farm
Khumaltar and storage house of Nationai Potato Research Program (NPRP) Khumaltar and at
Balaju cold store, respectively. After harvesting and curing of potato, 5 kg of tubers weight each
tuber more than 60 gram weight were used for the storage and processing qualitY determination.
The storage experiments were conducted in CRD design with 3 replications. Plastic racks and net
bags were used for storage of potato in dark room and cold storage house, respectively. Potato was
stored for 90 days in dark room and 120 days in cold house. Laboratory analyses were carried out
at National Academy of Science and Technology (NAS1) at Lalitpur before and after storage of
potato in ordinary conditions and before immediately after removing from cold store and 15 days
after re-conditioned. Observations were recorded on yield, storage losses, sprouting, chips quality
parameters like specific gravity (SG), dry matter (DM) and reducing sugar (RS). The storage loss
and sprouting percentage was recorded at 15 days intervals of dark sore potatoes and before
storage, immediately after removing from cold and 15 days after reconditioned of cold store
potatoes. The results showed a significant effoct of N and K20 and there interaction on yield,
sprouting, weight loss percentage and quality parameters. Based on the yield and quality
parameters the combination of 150:100:60 kg N: P20 5: K20 along with 20 tons compost I ha is
found suitable for storage and production of processing chips quality potato at Lalitpur and
similar soil and environment condition of Nepal.Link for e-copy: http://elibrary.narc.gov.np/?r=1649 E-copies
http://nkcs.org.np/narc/dl/?r=1649URL
Title : Effect of Nitrogen and Potassium on Yield, Storability and Post Harvest Processing Qualities of Potato for Chips Material Type: printed text Authors: Gautam, I.P., Author ; Sharma, Mohadatta, Author ; Bhim Bahadur Khatri, Author Publication Date: 2011 Article on page: 40-51p. Languages : English (eng) Keywords: Nitrogen, Potassium, Potato, Processing qualities for chips, Yield Link for e-copy: http://elibrary.narc.gov.np/?r=1194
in Nepal Agriculture Research Journal > Vol.11 (2011) . - 40-51p.[article] Effect of Nitrogen and Potassium on Yield, Storability and Post Harvest Processing Qualities of Potato for Chips [printed text] / Gautam, I.P., Author ; Sharma, Mohadatta, Author ; Bhim Bahadur Khatri, Author . - 2011 . - 40-51p.
Languages : English (eng)
in Nepal Agriculture Research Journal > Vol.11 (2011) . - 40-51p.
Keywords: Nitrogen, Potassium, Potato, Processing qualities for chips, Yield Link for e-copy: http://elibrary.narc.gov.np/?r=1194
in Agricultural research for enhancing livelihood of Nepalese people: Proceedings of 2nd SAS-N Convention, 30 July-1 Aug 2003, Kathmandu / Joshi, Bal K.
Title : Response of cabbage to nitrogen and phosphorus during rainy season in high hills Material Type: printed text Authors: Khatiwada, P.P., Author ; S. Piya, Author Pagination: 131-136 p. Languages : English (eng) Keywords: Cabbage, nitrogen, phosphorus, rainy season Abstract: A study to identify on appropriate dose of nitrogen anti phosphorus for summer season cabbage production was accomplished in the high hills of eastern Nepal. The experiment was conducted during the two summer seasons (May- September) of 2000 and 2001 AD. Three levels of nitrogen (60, 100 and 140 kg/ha) and the phosphorus (40, 60 and 80 kg/ha) were tested to Green Coronet variety with spatial arrangement in 45- x 30-cm. 60:80:50 N:P:K/ha yielded a significantly higher head yield (56.2 t/ha) in June transplanting…..
Link for e-copy: http://elibrary.narc.gov.np/?r=1071 Response of cabbage to nitrogen and phosphorus during rainy season in high hills [printed text] / Khatiwada, P.P., Author ; S. Piya, Author . - [s.d.] . - 131-136 p.
in Agricultural research for enhancing livelihood of Nepalese people: Proceedings of 2nd SAS-N Convention, 30 July-1 Aug 2003, Kathmandu / Joshi, Bal K.
Languages : English (eng)
Keywords: Cabbage, nitrogen, phosphorus, rainy season Abstract: A study to identify on appropriate dose of nitrogen anti phosphorus for summer season cabbage production was accomplished in the high hills of eastern Nepal. The experiment was conducted during the two summer seasons (May- September) of 2000 and 2001 AD. Three levels of nitrogen (60, 100 and 140 kg/ha) and the phosphorus (40, 60 and 80 kg/ha) were tested to Green Coronet variety with spatial arrangement in 45- x 30-cm. 60:80:50 N:P:K/ha yielded a significantly higher head yield (56.2 t/ha) in June transplanting…..
Link for e-copy: http://elibrary.narc.gov.np/?r=1071 E-copies
http://nkcs.org.np/narc/dl/?r=1071URL
