Assessment 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)  

Public ISBD [article]  inJournal of Agriculture and Forestry University > Volume 4 (2020) . - 77-82 p. 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 [...] [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 [...]

Need based nitrogen management in hybrid and improved rice varieties under dry direct seeded condition / Pooja Subedi in Journal of Agriculture and Forestry University, Volume 1 (2017)  

Public ISBD [article]  inJournal of Agriculture and Forestry University > Volume 1 (2017) . - 69-78 p. 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- [...] [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- [...]