[article]
| Title : |
Need based nitrogen management in hybrid and improved rice varieties under dry direct seeded condition |
| Material Type: |
printed text |
| Authors: |
Pooja Subedi, Author ; Sanjit Kumar Saha, Author ; S. Marahatta, Author ; A. P. Regmi, Author |
| Publication Date: |
2017 |
| Article on page: |
69-78 p. |
| Languages : |
English (eng) |
| Keywords: |
grain yield, nitrogen saving, limiting element, superior |
| Abstract: |
Nitrogen is one of the most limiting elements in almost all soils. Thus, proper application of
nitrogen fertilizers is vital to improve crop growth and grain yields. Insufficient and/or inappropriate
nitrogen fertilizer management is highly damaging to the crops. Optimal nitrogen management
strategies aim at matching the nitrogen fertilizer supply to the actual crop demand. The Leaf Color
Chart (LCC) is a tool for real time, or need based nitrogen management in rice. LCC based nitrogen
management without its basal application assisted to save significant amount of nitrogen (30 to
37.5 Kg N ha-1) in case of inbred varieties (Radha-4 and Sukkha-5) as compared to recommended
practice with 120 Kg N ha-1 applied in three equal splits. On the other hand, the requirement of
nitrogen for hybrid US-312 was remarkably higher than that of inbred varieties. However, pure
LCC based nitrogen management significantly decreased the amount of excess nitrogen application
as compared to the all other LCC based treatments. All the nitrogen management treatments
including LCC were similar to each other in respect of grain yield formation (4695 – 4891 Kgha-1),
but significantly superior over recommended practice (4408 Kg ha-1). The hybrid rice US-312
was significantly more productive (4695 Kgha-1) than inbred varieties, i.e Radha-4 (4089 Kgha-1)
and Sukkha-5 (4315 Kgha-1) which differed insignificantly. Thus, pure LCC based nitrogen
management was the most economic practice for both inbred and hybrid varieties of rice. |
| Link for e-copy: |
https://afu.edu.np/sites/default/files/Need-based-nitrogen-management-in-hybrid- [...] |
in Journal of Agriculture and Forestry University > Volume 1 (2017) . - 69-78 p.
[article] Need based nitrogen management in hybrid and improved rice varieties under dry direct seeded condition [printed text] / Pooja Subedi, Author ; Sanjit Kumar Saha, Author ; S. Marahatta, Author ; A. P. Regmi, Author . - 2017 . - 69-78 p. Languages : English ( eng) in Journal of Agriculture and Forestry University > Volume 1 (2017) . - 69-78 p.
| Keywords: |
grain yield, nitrogen saving, limiting element, superior |
| Abstract: |
Nitrogen is one of the most limiting elements in almost all soils. Thus, proper application of
nitrogen fertilizers is vital to improve crop growth and grain yields. Insufficient and/or inappropriate
nitrogen fertilizer management is highly damaging to the crops. Optimal nitrogen management
strategies aim at matching the nitrogen fertilizer supply to the actual crop demand. The Leaf Color
Chart (LCC) is a tool for real time, or need based nitrogen management in rice. LCC based nitrogen
management without its basal application assisted to save significant amount of nitrogen (30 to
37.5 Kg N ha-1) in case of inbred varieties (Radha-4 and Sukkha-5) as compared to recommended
practice with 120 Kg N ha-1 applied in three equal splits. On the other hand, the requirement of
nitrogen for hybrid US-312 was remarkably higher than that of inbred varieties. However, pure
LCC based nitrogen management significantly decreased the amount of excess nitrogen application
as compared to the all other LCC based treatments. All the nitrogen management treatments
including LCC were similar to each other in respect of grain yield formation (4695 – 4891 Kgha-1),
but significantly superior over recommended practice (4408 Kg ha-1). The hybrid rice US-312
was significantly more productive (4695 Kgha-1) than inbred varieties, i.e Radha-4 (4089 Kgha-1)
and Sukkha-5 (4315 Kgha-1) which differed insignificantly. Thus, pure LCC based nitrogen
management was the most economic practice for both inbred and hybrid varieties of rice. |
| Link for e-copy: |
https://afu.edu.np/sites/default/files/Need-based-nitrogen-management-in-hybrid- [...] |
|
Need based nitrogen management in hybrid and improved rice varieties under dry direct seeded condition in Journal of Agriculture and Forestry University, Volume 1 (2017)
