Weed management strategies to reduce herbicide use in zero-till rice-wheat cropping systems of the Indo-Gangetic Plains
In the rice–wheat (RW) systems of the Indo-Gangetic Plains of South Asia, conservation tillage practices, including zero-tillage (ZT), are being promoted to address emerging problems such as (1) shortages of labor and water, (2) declining factor productivity, (3) deterioration of soil health, and (4...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
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Cambridge University Press
2013
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| Online Access: | https://hdl.handle.net/10568/165145 |
| _version_ | 1855529495039049728 |
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| author | Kumar, Virender Singh, Samar Chhokar, Rajender S. Malik, Ram K. Brainard, Daniel C. Ladha, Jagdish K. |
| author_browse | Brainard, Daniel C. Chhokar, Rajender S. Kumar, Virender Ladha, Jagdish K. Malik, Ram K. Singh, Samar |
| author_facet | Kumar, Virender Singh, Samar Chhokar, Rajender S. Malik, Ram K. Brainard, Daniel C. Ladha, Jagdish K. |
| author_sort | Kumar, Virender |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | In the rice–wheat (RW) systems of the Indo-Gangetic Plains of South Asia, conservation tillage practices, including zero-tillage (ZT), are being promoted to address emerging problems such as (1) shortages of labor and water, (2) declining factor productivity, (3) deterioration of soil health, and (4) climate change. Despite multiple benefits of ZT, weed control remains a major challenge to adoption, resulting in more dependence on herbicides for weed control. Alternative management strategies are needed to reduce dependence on herbicides and minimize risks associated with their overuse, including evolution of herbicide resistance. The objectives of this review are to (1) highlight and synthesize research efforts in nonchemical weed management in ZT RW systems and (2) identify future weed ecology and management research needs to facilitate successful adoption of these systems. In ZT RW systems, crop residue can play a central role in suppressing weeds through mulch effects on emergence and seed predation. In ZT rice, wheat residue mulch (5 t ha−1) reduced weed density by 22 to 76% and promoted predation of RW weeds, including littleseed canarygrass and barnyardgrass seeds. For ZT wheat, rice residue mulch (6 to 10 t ha−1) in combination with early sowing reduced emergence of littleseed canarygrass by over 80%. Other promising nonchemical approaches that can be useful in suppressing weeds in ZT RW systems include use of certified seeds, weed-competitive cultivars, stale seedbed practices, living mulches (e.g., sesbania coculture), and water and nutrient management practices that shift weed–crop competition in favor of the crop. However, more research on emergence characteristics and mulching effects of different crop residues on key weeds under ZT, cover cropping, and breeding crops for weed suppression will strengthen nonchemical weed management programs. Efforts are needed to integrate multiple tactics and to evaluate long-term effects of nonchemical weed management practices on RW cropping system sustainability. |
| format | Journal Article |
| id | CGSpace165145 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | Cambridge University Press |
| publisherStr | Cambridge University Press |
| record_format | dspace |
| spelling | CGSpace1651452024-12-19T14:12:54Z Weed management strategies to reduce herbicide use in zero-till rice-wheat cropping systems of the Indo-Gangetic Plains Kumar, Virender Singh, Samar Chhokar, Rajender S. Malik, Ram K. Brainard, Daniel C. Ladha, Jagdish K. chemical control cropping systems echinochloa crus-galli herbicides indo-gangetic plains rice-wheat system sustainability weed control weeds zero tillage In the rice–wheat (RW) systems of the Indo-Gangetic Plains of South Asia, conservation tillage practices, including zero-tillage (ZT), are being promoted to address emerging problems such as (1) shortages of labor and water, (2) declining factor productivity, (3) deterioration of soil health, and (4) climate change. Despite multiple benefits of ZT, weed control remains a major challenge to adoption, resulting in more dependence on herbicides for weed control. Alternative management strategies are needed to reduce dependence on herbicides and minimize risks associated with their overuse, including evolution of herbicide resistance. The objectives of this review are to (1) highlight and synthesize research efforts in nonchemical weed management in ZT RW systems and (2) identify future weed ecology and management research needs to facilitate successful adoption of these systems. In ZT RW systems, crop residue can play a central role in suppressing weeds through mulch effects on emergence and seed predation. In ZT rice, wheat residue mulch (5 t ha−1) reduced weed density by 22 to 76% and promoted predation of RW weeds, including littleseed canarygrass and barnyardgrass seeds. For ZT wheat, rice residue mulch (6 to 10 t ha−1) in combination with early sowing reduced emergence of littleseed canarygrass by over 80%. Other promising nonchemical approaches that can be useful in suppressing weeds in ZT RW systems include use of certified seeds, weed-competitive cultivars, stale seedbed practices, living mulches (e.g., sesbania coculture), and water and nutrient management practices that shift weed–crop competition in favor of the crop. However, more research on emergence characteristics and mulching effects of different crop residues on key weeds under ZT, cover cropping, and breeding crops for weed suppression will strengthen nonchemical weed management programs. Efforts are needed to integrate multiple tactics and to evaluate long-term effects of nonchemical weed management practices on RW cropping system sustainability. 2013-03 2024-12-19T12:54:44Z 2024-12-19T12:54:44Z Journal Article https://hdl.handle.net/10568/165145 en Cambridge University Press Kumar, Virender; Singh, Samar; Chhokar, Rajender S.; Malik, Ram K.; Brainard, Daniel C. and Ladha, Jagdish K. 2013. Weed management strategies to reduce herbicide use in zero-till rice-wheat cropping systems of the Indo-Gangetic Plains. Weed technol., Volume 27 no. 1 p. 241-254 |
| spellingShingle | chemical control cropping systems echinochloa crus-galli herbicides indo-gangetic plains rice-wheat system sustainability weed control weeds zero tillage Kumar, Virender Singh, Samar Chhokar, Rajender S. Malik, Ram K. Brainard, Daniel C. Ladha, Jagdish K. Weed management strategies to reduce herbicide use in zero-till rice-wheat cropping systems of the Indo-Gangetic Plains |
| title | Weed management strategies to reduce herbicide use in zero-till rice-wheat cropping systems of the Indo-Gangetic Plains |
| title_full | Weed management strategies to reduce herbicide use in zero-till rice-wheat cropping systems of the Indo-Gangetic Plains |
| title_fullStr | Weed management strategies to reduce herbicide use in zero-till rice-wheat cropping systems of the Indo-Gangetic Plains |
| title_full_unstemmed | Weed management strategies to reduce herbicide use in zero-till rice-wheat cropping systems of the Indo-Gangetic Plains |
| title_short | Weed management strategies to reduce herbicide use in zero-till rice-wheat cropping systems of the Indo-Gangetic Plains |
| title_sort | weed management strategies to reduce herbicide use in zero till rice wheat cropping systems of the indo gangetic plains |
| topic | chemical control cropping systems echinochloa crus-galli herbicides indo-gangetic plains rice-wheat system sustainability weed control weeds zero tillage |
| url | https://hdl.handle.net/10568/165145 |
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