|
in
| Title : |
A review on Azolla production and utilization in rice farming in Nepal |
| Material Type: |
printed text |
| Authors: |
Bishnu Hari Adhikary ; Manoj Kumar Thakur, Author ; Santosh Neupane, Author ; Robinson Adhikary, Author |
| Pagination: |
266-276 p. |
| Languages : |
English (eng) |
| Keywords: |
Anabaena azollae ; Azolla fern bio-fertilizer nitrogen fixation |
| Abstract: |
AzaLia ferns, aquatic floating plants, are used as green manure (bio-fertili zer) for increasing
rice yields. The recommended dose of chemical-nitrogen (urea-N) can be reduced when
Azolla are applied to the paddy field . Azalia is very important to those rice growing areas
where urea-N is not avai lable or too expensive. Evidences show that application of Azolla-N
alone or in combination with chemical-N could help increase rice grain y ields. Recentl y,
Azolla has been utilized as natural source of nitrogen (N) to the flooded rice because it fixes
atmospheric dinitrogen (N2) with the help of Anabaena azollae (cynobacterium). An average
production of 610 kg per hectare per day of fresh Azolla biomass and as low as 1.3 kg per
hectare per day of nitrogen (N) could be produced by Azolla species which indicated high
potentiality of the Azolla for its use in rice (Oriza sativa L) production. Dual cropping of
Azolla was found effective than monocropped Azolla. Azalia growth rate and biomass
production, and nitrogen fixation rate was greatly influenced and increased by the application
of phosphorus (P20 5) to the Azolla . Development of better nitrogen producing species of
Azolla and stress tolerant varieties need further research for its maximum exploitation and
use in agriculture production. |
| Link for e-copy: |
http://elibrary.narc.gov.np/?r=909 |
in
A review on Azolla production and utilization in rice farming in Nepal [printed text] / Bishnu Hari Adhikary ; Manoj Kumar Thakur, Author ; Santosh Neupane, Author ; Robinson Adhikary, Author . - [s.d.] . - 266-276 p. Languages : English ( eng) | Keywords: |
Anabaena azollae ; Azolla fern bio-fertilizer nitrogen fixation |
| Abstract: |
AzaLia ferns, aquatic floating plants, are used as green manure (bio-fertili zer) for increasing
rice yields. The recommended dose of chemical-nitrogen (urea-N) can be reduced when
Azolla are applied to the paddy field . Azalia is very important to those rice growing areas
where urea-N is not avai lable or too expensive. Evidences show that application of Azolla-N
alone or in combination with chemical-N could help increase rice grain y ields. Recentl y,
Azolla has been utilized as natural source of nitrogen (N) to the flooded rice because it fixes
atmospheric dinitrogen (N2) with the help of Anabaena azollae (cynobacterium). An average
production of 610 kg per hectare per day of fresh Azolla biomass and as low as 1.3 kg per
hectare per day of nitrogen (N) could be produced by Azolla species which indicated high
potentiality of the Azolla for its use in rice (Oriza sativa L) production. Dual cropping of
Azolla was found effective than monocropped Azolla. Azalia growth rate and biomass
production, and nitrogen fixation rate was greatly influenced and increased by the application
of phosphorus (P20 5) to the Azolla . Development of better nitrogen producing species of
Azolla and stress tolerant varieties need further research for its maximum exploitation and
use in agriculture production. |
| Link for e-copy: |
http://elibrary.narc.gov.np/?r=909 |
|  |
Refine your search
