Impact of conservation tillage in rice–based cropping systems on soil aggregation, carbon pools and nutrients
Tillage intensive cropping practices have deteriorated soil physical quality and decreased soil organic carbon (SOC) levels in rice–growing areas of South Asia. Consequently, crop productivity has declined over the years demonstrating the need for sustainable alternatives. Given that, a field experi...
| Autores principales: | , , , , , , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Elsevier
2019
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| Acceso en línea: | https://hdl.handle.net/10568/164703 |
| _version_ | 1855522677030125568 |
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| author | Nandan, Rajiv Singh, Vikram Singh, Sati Shankar Kumar, Virender Hazra, Kali Krishna Nath, Chaitanya Prasad Poonia, Shishpal Malik, Ram Kanwar Bhattacharyya, Ranjan McDonald, Andrew |
| author_browse | Bhattacharyya, Ranjan Hazra, Kali Krishna Kumar, Virender Malik, Ram Kanwar McDonald, Andrew Nandan, Rajiv Nath, Chaitanya Prasad Poonia, Shishpal Singh, Sati Shankar Singh, Vikram |
| author_facet | Nandan, Rajiv Singh, Vikram Singh, Sati Shankar Kumar, Virender Hazra, Kali Krishna Nath, Chaitanya Prasad Poonia, Shishpal Malik, Ram Kanwar Bhattacharyya, Ranjan McDonald, Andrew |
| author_sort | Nandan, Rajiv |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Tillage intensive cropping practices have deteriorated soil physical quality and decreased soil organic carbon (SOC) levels in rice–growing areas of South Asia. Consequently, crop productivity has declined over the years demonstrating the need for sustainable alternatives. Given that, a field experiment was conducted for six years to assess the impact of four tillage based crop establishment treatments [puddled transplant rice followed by conventional tillage in wheat/maize (CTTPR–CT), non–puddled transplant rice followed by zero–tillage in wheat/maize (NPTPR–ZT), zero–till transplant rice followed by zero–tillage in wheat/maize (ZTTPR–ZT), zero–tillage direct seeded rice followed by zero–tillage in wheat/maize (ZTDSR–ZT)], two residue management treatments [residue removal, residue retention (~33%)], and two cropping systems [rice–wheat, rice–maize] on soil aggregation, carbon pools, nutrient availability, and crop productivity. After six years of rotation, in top 0.2 m soil depth, zero–till crop establishment treatments (ZTTPR–ZT and ZTDSR–ZT) had higher (p < 0.05) total organic carbon (TOC) over conventional tillage treatment (CTTPR–CT). Zero–till crop establishment treatments increased very–labile C faction (Cfrac1) by 21% followed by labile fraction (Cfrac2) (16%), non–labile fraction (Cfrac4) (13%) and less–labile fraction (Cfrac3) (7%). Notably, higher passive C–pool in conservation tillage practices over CTTPR–CT suggests that conservation tillage could stabilize the recalcitrant form of carbon that persists longer in the soil. Meantime, zero–till crop establishment treatments had higher (p < 0.05) water stable macro–aggregates, macro–aggregates: micro–aggregates ratio and aggregate carbon content over CTTPR–CT. The treatment NPTPR–ZT significantly increased soil quality parameters over CTTPR–CT. However, the effect was not as prominent as that of ZTTPR–ZT and ZTDSR–ZT. Retention of crop residue increased (p < 0.05) TOC (12%) and soil available nutrients mainly available–P (16%), followed by available–K (12%), DTPA–extractable Zn (11%), and available–S (6%) over residue removal treatment. The constructive changes in soil properties following conservation tillage and crop residue retention led to increased crop productivity over conventional CTTPR–CT. Therefore, conservation tillage (particularly ZTTPR–ZT and ZTDSR–ZT) and crop residue retention could be recommended in tropical rice–based cropping systems for improving soil quality and production |
| format | Journal Article |
| id | CGSpace164703 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | Elsevier |
| publisherStr | Elsevier |
| record_format | dspace |
| spelling | CGSpace1647032024-12-19T14:12:24Z Impact of conservation tillage in rice–based cropping systems on soil aggregation, carbon pools and nutrients Nandan, Rajiv Singh, Vikram Singh, Sati Shankar Kumar, Virender Hazra, Kali Krishna Nath, Chaitanya Prasad Poonia, Shishpal Malik, Ram Kanwar Bhattacharyya, Ranjan McDonald, Andrew Tillage intensive cropping practices have deteriorated soil physical quality and decreased soil organic carbon (SOC) levels in rice–growing areas of South Asia. Consequently, crop productivity has declined over the years demonstrating the need for sustainable alternatives. Given that, a field experiment was conducted for six years to assess the impact of four tillage based crop establishment treatments [puddled transplant rice followed by conventional tillage in wheat/maize (CTTPR–CT), non–puddled transplant rice followed by zero–tillage in wheat/maize (NPTPR–ZT), zero–till transplant rice followed by zero–tillage in wheat/maize (ZTTPR–ZT), zero–tillage direct seeded rice followed by zero–tillage in wheat/maize (ZTDSR–ZT)], two residue management treatments [residue removal, residue retention (~33%)], and two cropping systems [rice–wheat, rice–maize] on soil aggregation, carbon pools, nutrient availability, and crop productivity. After six years of rotation, in top 0.2 m soil depth, zero–till crop establishment treatments (ZTTPR–ZT and ZTDSR–ZT) had higher (p < 0.05) total organic carbon (TOC) over conventional tillage treatment (CTTPR–CT). Zero–till crop establishment treatments increased very–labile C faction (Cfrac1) by 21% followed by labile fraction (Cfrac2) (16%), non–labile fraction (Cfrac4) (13%) and less–labile fraction (Cfrac3) (7%). Notably, higher passive C–pool in conservation tillage practices over CTTPR–CT suggests that conservation tillage could stabilize the recalcitrant form of carbon that persists longer in the soil. Meantime, zero–till crop establishment treatments had higher (p < 0.05) water stable macro–aggregates, macro–aggregates: micro–aggregates ratio and aggregate carbon content over CTTPR–CT. The treatment NPTPR–ZT significantly increased soil quality parameters over CTTPR–CT. However, the effect was not as prominent as that of ZTTPR–ZT and ZTDSR–ZT. Retention of crop residue increased (p < 0.05) TOC (12%) and soil available nutrients mainly available–P (16%), followed by available–K (12%), DTPA–extractable Zn (11%), and available–S (6%) over residue removal treatment. The constructive changes in soil properties following conservation tillage and crop residue retention led to increased crop productivity over conventional CTTPR–CT. Therefore, conservation tillage (particularly ZTTPR–ZT and ZTDSR–ZT) and crop residue retention could be recommended in tropical rice–based cropping systems for improving soil quality and production 2019-04 2024-12-19T12:54:13Z 2024-12-19T12:54:13Z Journal Article https://hdl.handle.net/10568/164703 en Open Access Elsevier Nandan, Rajiv; Singh, Vikram; Singh, Sati Shankar; Kumar, Virender; Hazra, Kali Krishna; Nath, Chaitanya Prasad; Poonia, Shishpal; Malik, Ram Kanwar; Bhattacharyya, Ranjan and McDonald, Andrew. 2019. Impact of conservation tillage in rice–based cropping systems on soil aggregation, carbon pools and nutrients. Geoderma, Volume 340 p. 104-114 |
| spellingShingle | Nandan, Rajiv Singh, Vikram Singh, Sati Shankar Kumar, Virender Hazra, Kali Krishna Nath, Chaitanya Prasad Poonia, Shishpal Malik, Ram Kanwar Bhattacharyya, Ranjan McDonald, Andrew Impact of conservation tillage in rice–based cropping systems on soil aggregation, carbon pools and nutrients |
| title | Impact of conservation tillage in rice–based cropping systems on soil aggregation, carbon pools and nutrients |
| title_full | Impact of conservation tillage in rice–based cropping systems on soil aggregation, carbon pools and nutrients |
| title_fullStr | Impact of conservation tillage in rice–based cropping systems on soil aggregation, carbon pools and nutrients |
| title_full_unstemmed | Impact of conservation tillage in rice–based cropping systems on soil aggregation, carbon pools and nutrients |
| title_short | Impact of conservation tillage in rice–based cropping systems on soil aggregation, carbon pools and nutrients |
| title_sort | impact of conservation tillage in rice based cropping systems on soil aggregation carbon pools and nutrients |
| url | https://hdl.handle.net/10568/164703 |
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