Precision nutrient management in conservation agriculture based wheat production of Northwest India: Profitability, nutrient use efficiency and environmental footprint
In the high-yielding wheat production systems in Northwest (NW) Indo-Gangetic Plains of India, intensive tillage operations and blanket fertilizer recommendations have led to high production costs, decreased nutrient use efficiency, lower profits and significant environmental externalities. No-tilla...
| Main Authors: | , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
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Elsevier
2014
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/52153 |
| _version_ | 1855540779116658688 |
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| author | Sapkota, Tek Bahadur Majumdar, Kaushik Jat, Mangi Lal Kumar, Arvind Bishnoi, D.K. McDonald AJ Pampolino M |
| author_browse | Bishnoi, D.K. Jat, Mangi Lal Kumar, Arvind Majumdar, Kaushik McDonald AJ Pampolino M Sapkota, Tek Bahadur |
| author_facet | Sapkota, Tek Bahadur Majumdar, Kaushik Jat, Mangi Lal Kumar, Arvind Bishnoi, D.K. McDonald AJ Pampolino M |
| author_sort | Sapkota, Tek Bahadur |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | In the high-yielding wheat production systems in Northwest (NW) Indo-Gangetic Plains of India, intensive tillage operations and blanket fertilizer recommendations have led to high production costs, decreased nutrient use efficiency, lower profits and significant environmental externalities. No-tillage (NT) has been increasingly adopted in this region to reduce costs and increase input use efficiency. But, optimal nutrient management practices for NT based wheat production are still poorly understood. Opportunities exist to further enhance the yield, profitability, and resource use efficiency of NT wheat through site-specific nutrient management (SSNM).
On-farm trials were conducted in seven districts of Haryana, India for two consecutive years (2010–11 and 2011–12) to evaluate three different approaches to SSNM based on recommendations from the Nutrient Expert® (NE) decision support system in NT and conventional tillage (CT) based wheat production systems. Performance of NE based recommendations was evaluated against current state recommendations and farmers’ practices for nutrient management. Three SSNM treatments based on NE based recommendation were (1) ‘NE80:20’ with 80% N applied at planting and 20% at second irrigation (2) ‘NE33:33:33’ with N split as 33% basal, 33% at Crown Root Initiation (CRI) and 33% at second irrigation; and (3) ‘NE80:GS’ with N split as 80% basal and further application of N based on optical sensor (Green Seeker™)-guided recommendations. Yield, nutrient use efficiency and economic profitability were determined following standard agronomic and economic measurements and calculations. Cool Farm Tool (CFT), an empirical model to estimate greenhouse gases (GHGs) from agriculture production, was used to estimate GHG emissions under different treatments.
Wheat grain and biomass yield were higher under NT in 2010–11 but no difference was observed in 2011–12. The three NE-based nutrient management strategies increased yield, nutrient use efficiency as well as net return as compared to state recommendation and farmers’ fertilization practice. Global warming potential (GWP) of wheat production was also lower with NT system as compared to CT system and NE-based nutrient managements as compared to farmers’ fertilization practice. State recommended nutrient management had similar GWP as NE-based nutrient managements except NE80:GS in which GWP was the lowest. Results suggest that no-tillage system along with site-specific approaches for nutrient management can increase yield, nutrient use efficiency and profitability while decreasing GHG from wheat production in NW India. |
| format | Journal Article |
| id | CGSpace52153 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2014 |
| publishDateRange | 2014 |
| publishDateSort | 2014 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace521532024-05-01T08:19:45Z Precision nutrient management in conservation agriculture based wheat production of Northwest India: Profitability, nutrient use efficiency and environmental footprint Sapkota, Tek Bahadur Majumdar, Kaushik Jat, Mangi Lal Kumar, Arvind Bishnoi, D.K. McDonald AJ Pampolino M climate agriculture wheats nutrient management tillage greenhouse gases In the high-yielding wheat production systems in Northwest (NW) Indo-Gangetic Plains of India, intensive tillage operations and blanket fertilizer recommendations have led to high production costs, decreased nutrient use efficiency, lower profits and significant environmental externalities. No-tillage (NT) has been increasingly adopted in this region to reduce costs and increase input use efficiency. But, optimal nutrient management practices for NT based wheat production are still poorly understood. Opportunities exist to further enhance the yield, profitability, and resource use efficiency of NT wheat through site-specific nutrient management (SSNM). On-farm trials were conducted in seven districts of Haryana, India for two consecutive years (2010–11 and 2011–12) to evaluate three different approaches to SSNM based on recommendations from the Nutrient Expert® (NE) decision support system in NT and conventional tillage (CT) based wheat production systems. Performance of NE based recommendations was evaluated against current state recommendations and farmers’ practices for nutrient management. Three SSNM treatments based on NE based recommendation were (1) ‘NE80:20’ with 80% N applied at planting and 20% at second irrigation (2) ‘NE33:33:33’ with N split as 33% basal, 33% at Crown Root Initiation (CRI) and 33% at second irrigation; and (3) ‘NE80:GS’ with N split as 80% basal and further application of N based on optical sensor (Green Seeker™)-guided recommendations. Yield, nutrient use efficiency and economic profitability were determined following standard agronomic and economic measurements and calculations. Cool Farm Tool (CFT), an empirical model to estimate greenhouse gases (GHGs) from agriculture production, was used to estimate GHG emissions under different treatments. Wheat grain and biomass yield were higher under NT in 2010–11 but no difference was observed in 2011–12. The three NE-based nutrient management strategies increased yield, nutrient use efficiency as well as net return as compared to state recommendation and farmers’ fertilization practice. Global warming potential (GWP) of wheat production was also lower with NT system as compared to CT system and NE-based nutrient managements as compared to farmers’ fertilization practice. State recommended nutrient management had similar GWP as NE-based nutrient managements except NE80:GS in which GWP was the lowest. Results suggest that no-tillage system along with site-specific approaches for nutrient management can increase yield, nutrient use efficiency and profitability while decreasing GHG from wheat production in NW India. 2014-01 2014-12-16T06:37:36Z 2014-12-16T06:37:36Z Journal Article https://hdl.handle.net/10568/52153 en Limited Access Elsevier Sapkota TB, Majumdar K, Jat ML, Kumar A, Bishnoi DK, McDonald AJ, Pampolino M. 2014. Precision nutrient management in conservation agriculture based wheat production of Northwest India: Profitability, nutrient use efficiency and environmental footprint. Field Crops Research 155:233–244. |
| spellingShingle | climate agriculture wheats nutrient management tillage greenhouse gases Sapkota, Tek Bahadur Majumdar, Kaushik Jat, Mangi Lal Kumar, Arvind Bishnoi, D.K. McDonald AJ Pampolino M Precision nutrient management in conservation agriculture based wheat production of Northwest India: Profitability, nutrient use efficiency and environmental footprint |
| title | Precision nutrient management in conservation agriculture based wheat production of Northwest India: Profitability, nutrient use efficiency and environmental footprint |
| title_full | Precision nutrient management in conservation agriculture based wheat production of Northwest India: Profitability, nutrient use efficiency and environmental footprint |
| title_fullStr | Precision nutrient management in conservation agriculture based wheat production of Northwest India: Profitability, nutrient use efficiency and environmental footprint |
| title_full_unstemmed | Precision nutrient management in conservation agriculture based wheat production of Northwest India: Profitability, nutrient use efficiency and environmental footprint |
| title_short | Precision nutrient management in conservation agriculture based wheat production of Northwest India: Profitability, nutrient use efficiency and environmental footprint |
| title_sort | precision nutrient management in conservation agriculture based wheat production of northwest india profitability nutrient use efficiency and environmental footprint |
| topic | climate agriculture wheats nutrient management tillage greenhouse gases |
| url | https://hdl.handle.net/10568/52153 |
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