Strip tillage and crop residue retention decrease the size but increase the diversity of the weed seed bank under intensive rice-based crop rotations in Bangladesh
Cropping under conservation agriculture (CA) has become increasingly attractive among farmers in recent years. However, weed control may be more difficult during the transition to CA from conventional establishment methods due to the reduction in tillage intensity. Conversely, CA changes to weed dyn...
| Autores principales: | , , , , , , , , , , |
|---|---|
| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
MDPI
2021
|
| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/164253 |
| _version_ | 1855514104041570304 |
|---|---|
| author | Hossain, Mohammad Mobarak Begum, Mahfuza Hashem, Abul Rahman, Md. Moshiur Ahmed, Sharif Hassan, Montaser M. Javed, Talha Shabbir, Rubab Hadifa, Adel EL Sabagh, Ayman Bell, Richard W. |
| author_browse | Ahmed, Sharif Begum, Mahfuza Bell, Richard W. EL Sabagh, Ayman Hadifa, Adel Hashem, Abul Hassan, Montaser M. Hossain, Mohammad Mobarak Javed, Talha Rahman, Md. Moshiur Shabbir, Rubab |
| author_facet | Hossain, Mohammad Mobarak Begum, Mahfuza Hashem, Abul Rahman, Md. Moshiur Ahmed, Sharif Hassan, Montaser M. Javed, Talha Shabbir, Rubab Hadifa, Adel EL Sabagh, Ayman Bell, Richard W. |
| author_sort | Hossain, Mohammad Mobarak |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Cropping under conservation agriculture (CA) has become increasingly attractive among farmers in recent years. However, weed control may be more difficult during the transition to CA from conventional establishment methods due to the reduction in tillage intensity. Conversely, CA changes to weed dynamics can alter the weed seed bank in the longer run. In Bangladesh’s intensively cropped rice-based rotations, the nature of weed seed bank shifts over time after adopting CA are poorly known. Two 2-year studies were sampled from on-farm CA experiments under wheat-mungbean-winter rice and monsoon rice-mustard-winter rice rotations. We investigated the effects of reduced soil disruption in the form of strip-tillage (ST) combined with increased deposition of standing reside from previous crops (0 vs. 50%). The weed seed bank in 0–5, 5–10, and 10–15 cm depths of soil were quantified in a shade-house experiment by measuring weed emergence over 12 months in seedling trays. After 2 years of field study, the year-round count of emerged weeds from the seed bank showed that ST plus 50% mulch had a lower weed abundance and biomass and fewer weed species than that of conventional tillage (CT) without residue. The perennial weeds Ageratum conyzoides L., Alternanthera philoxeroides L., Cynodon dactylon L., Cyperus rotundus L., Jussia decurrence Walt., Leersia hexandra L., Scirpus mucronatus (L.) Palla., and Solanum torvum Sw. were enriched in the smaller-sized ST seed banks in terms of both density and biomass. The CT, on the other hand, was dominated by annual weeds: Cyperus difformis L., Cyanotis axillaris Roem., Echinochloa crus-galli (L.) Beauv., Eleusine indica L., Fimbristylis miliacea (L.) Vahl., and Rotala ramosior L. Overall, ST plus 50% residue had a more diverse seed bank than CT without mulch. The majority of weed seeds were amassed in the 0–5 cm soil depth of the ST, while most of them were accumulated in the 10–15 cm layer of the CT. The wheat-mungbean-winter rice rotation had a more diverse floristic composition with many more weed species than the monsoon rice-mustard-winter rice rotation. |
| format | Journal Article |
| id | CGSpace164253 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2021 |
| publishDateRange | 2021 |
| publishDateSort | 2021 |
| publisher | MDPI |
| publisherStr | MDPI |
| record_format | dspace |
| spelling | CGSpace1642532025-05-14T10:23:49Z Strip tillage and crop residue retention decrease the size but increase the diversity of the weed seed bank under intensive rice-based crop rotations in Bangladesh Hossain, Mohammad Mobarak Begum, Mahfuza Hashem, Abul Rahman, Md. Moshiur Ahmed, Sharif Hassan, Montaser M. Javed, Talha Shabbir, Rubab Hadifa, Adel EL Sabagh, Ayman Bell, Richard W. weed control tillage crop residue mulching weeds Cropping under conservation agriculture (CA) has become increasingly attractive among farmers in recent years. However, weed control may be more difficult during the transition to CA from conventional establishment methods due to the reduction in tillage intensity. Conversely, CA changes to weed dynamics can alter the weed seed bank in the longer run. In Bangladesh’s intensively cropped rice-based rotations, the nature of weed seed bank shifts over time after adopting CA are poorly known. Two 2-year studies were sampled from on-farm CA experiments under wheat-mungbean-winter rice and monsoon rice-mustard-winter rice rotations. We investigated the effects of reduced soil disruption in the form of strip-tillage (ST) combined with increased deposition of standing reside from previous crops (0 vs. 50%). The weed seed bank in 0–5, 5–10, and 10–15 cm depths of soil were quantified in a shade-house experiment by measuring weed emergence over 12 months in seedling trays. After 2 years of field study, the year-round count of emerged weeds from the seed bank showed that ST plus 50% mulch had a lower weed abundance and biomass and fewer weed species than that of conventional tillage (CT) without residue. The perennial weeds Ageratum conyzoides L., Alternanthera philoxeroides L., Cynodon dactylon L., Cyperus rotundus L., Jussia decurrence Walt., Leersia hexandra L., Scirpus mucronatus (L.) Palla., and Solanum torvum Sw. were enriched in the smaller-sized ST seed banks in terms of both density and biomass. The CT, on the other hand, was dominated by annual weeds: Cyperus difformis L., Cyanotis axillaris Roem., Echinochloa crus-galli (L.) Beauv., Eleusine indica L., Fimbristylis miliacea (L.) Vahl., and Rotala ramosior L. Overall, ST plus 50% residue had a more diverse seed bank than CT without mulch. The majority of weed seeds were amassed in the 0–5 cm soil depth of the ST, while most of them were accumulated in the 10–15 cm layer of the CT. The wheat-mungbean-winter rice rotation had a more diverse floristic composition with many more weed species than the monsoon rice-mustard-winter rice rotation. 2021-06-07 2024-12-19T12:53:38Z 2024-12-19T12:53:38Z Journal Article https://hdl.handle.net/10568/164253 en Open Access MDPI Hossain, Mohammad Mobarak; Begum, Mahfuza; Hashem, Abul; Rahman, Md. Moshiur; Ahmed, Sharif; Hassan, Montaser M.; Javed, Talha; Shabbir, Rubab; Hadifa, Adel; Sabagh, Ayman EL and Bell, Richard W. 2021. Strip tillage and crop residue retention decrease the size but increase the diversity of the weed seed bank under intensive rice-based crop rotations in Bangladesh. Agronomy, Volume 11 no. 6 p. 1164 |
| spellingShingle | weed control tillage crop residue mulching weeds Hossain, Mohammad Mobarak Begum, Mahfuza Hashem, Abul Rahman, Md. Moshiur Ahmed, Sharif Hassan, Montaser M. Javed, Talha Shabbir, Rubab Hadifa, Adel EL Sabagh, Ayman Bell, Richard W. Strip tillage and crop residue retention decrease the size but increase the diversity of the weed seed bank under intensive rice-based crop rotations in Bangladesh |
| title | Strip tillage and crop residue retention decrease the size but increase the diversity of the weed seed bank under intensive rice-based crop rotations in Bangladesh |
| title_full | Strip tillage and crop residue retention decrease the size but increase the diversity of the weed seed bank under intensive rice-based crop rotations in Bangladesh |
| title_fullStr | Strip tillage and crop residue retention decrease the size but increase the diversity of the weed seed bank under intensive rice-based crop rotations in Bangladesh |
| title_full_unstemmed | Strip tillage and crop residue retention decrease the size but increase the diversity of the weed seed bank under intensive rice-based crop rotations in Bangladesh |
| title_short | Strip tillage and crop residue retention decrease the size but increase the diversity of the weed seed bank under intensive rice-based crop rotations in Bangladesh |
| title_sort | strip tillage and crop residue retention decrease the size but increase the diversity of the weed seed bank under intensive rice based crop rotations in bangladesh |
| topic | weed control tillage crop residue mulching weeds |
| url | https://hdl.handle.net/10568/164253 |
| work_keys_str_mv | AT hossainmohammadmobarak striptillageandcropresidueretentiondecreasethesizebutincreasethediversityoftheweedseedbankunderintensivericebasedcroprotationsinbangladesh AT begummahfuza striptillageandcropresidueretentiondecreasethesizebutincreasethediversityoftheweedseedbankunderintensivericebasedcroprotationsinbangladesh AT hashemabul striptillageandcropresidueretentiondecreasethesizebutincreasethediversityoftheweedseedbankunderintensivericebasedcroprotationsinbangladesh AT rahmanmdmoshiur striptillageandcropresidueretentiondecreasethesizebutincreasethediversityoftheweedseedbankunderintensivericebasedcroprotationsinbangladesh AT ahmedsharif striptillageandcropresidueretentiondecreasethesizebutincreasethediversityoftheweedseedbankunderintensivericebasedcroprotationsinbangladesh AT hassanmontaserm striptillageandcropresidueretentiondecreasethesizebutincreasethediversityoftheweedseedbankunderintensivericebasedcroprotationsinbangladesh AT javedtalha striptillageandcropresidueretentiondecreasethesizebutincreasethediversityoftheweedseedbankunderintensivericebasedcroprotationsinbangladesh AT shabbirrubab striptillageandcropresidueretentiondecreasethesizebutincreasethediversityoftheweedseedbankunderintensivericebasedcroprotationsinbangladesh AT hadifaadel striptillageandcropresidueretentiondecreasethesizebutincreasethediversityoftheweedseedbankunderintensivericebasedcroprotationsinbangladesh AT elsabaghayman striptillageandcropresidueretentiondecreasethesizebutincreasethediversityoftheweedseedbankunderintensivericebasedcroprotationsinbangladesh AT bellrichardw striptillageandcropresidueretentiondecreasethesizebutincreasethediversityoftheweedseedbankunderintensivericebasedcroprotationsinbangladesh |