Can the parasitic weeds Striga asiatica and Rhamphicarpa fistulosa co-occur in rain-fed rice?
Striga asiatica and Rhamphicarpa fistulosa are important parasitic weeds of rain-fed rice, partly distributed in similar regions in sub-Saharan Africa (SSA). It is not evident whether their ecologies are mutually exclusive or partially overlapping. In Kyela, a rice-growing area in south Tanzania whe...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Journal Article |
| Language: | Inglés |
| Published: |
Wiley
2015
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/76125 |
| _version_ | 1855524419992027136 |
|---|---|
| author | Kabiri S Rodenburg, J. Kayeke J Ast, A. van Makokha, D.W. Msangi SH Irakiza, R. Bastiaans, L. |
| author_browse | Ast, A. van Bastiaans, L. Irakiza, R. Kabiri S Kayeke J Makokha, D.W. Msangi SH Rodenburg, J. |
| author_facet | Kabiri S Rodenburg, J. Kayeke J Ast, A. van Makokha, D.W. Msangi SH Irakiza, R. Bastiaans, L. |
| author_sort | Kabiri S |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Striga asiatica and Rhamphicarpa fistulosa are important parasitic weeds of rain-fed rice, partly distributed in similar regions in sub-Saharan Africa (SSA). It is not evident whether their ecologies are mutually exclusive or partially overlapping. In Kyela, a rice-growing area in south Tanzania where both parasites are present, three transects of about 3 km each across the upland–lowland continuum were surveyed in June 2012 and 2013. A total of 36 fields were categorised according to their position on the upland–lowland continuum as High, Middle or Low and soil samples were taken. In each field, parasitic and non-parasitic weed species were identified in three quadrats. Additionally, in two pot experiments with four different moisture levels ranging from wilting point to saturation, influence of soil moisture on emergence and growth of parasites was investigated. Striga asiatica was observed in higher lying drier fields, while R. fistulosa was observed in the lower lying wetter fields. Furthermore, non-parasitic weed species that were exclusive to S. asiatica-infested fields are adapted to open well-drained soils, while species that were exclusive to R. fistulosa fields are typical for wet soils. The experiments confirmed that S. asiatica is favoured by free-draining soils and R. fistulosa by waterlogged soils. These results imply that changes in climate, specifically moisture regimes, will be crucial for future prevalence of these parasitic weeds. The non-overlapping ecological range between their habitats suggests that their distribution and associated problems might remain separate. Thus, management strategies can be focused independently on either species. |
| format | Journal Article |
| id | CGSpace76125 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2015 |
| publishDateRange | 2015 |
| publishDateSort | 2015 |
| publisher | Wiley |
| publisherStr | Wiley |
| record_format | dspace |
| spelling | CGSpace761252025-02-19T14:32:20Z Can the parasitic weeds Striga asiatica and Rhamphicarpa fistulosa co-occur in rain-fed rice? Kabiri S Rodenburg, J. Kayeke J Ast, A. van Makokha, D.W. Msangi SH Irakiza, R. Bastiaans, L. climate change agriculture food security parasitic weed species niche ecology agro-ecosystems soil moisture Striga asiatica and Rhamphicarpa fistulosa are important parasitic weeds of rain-fed rice, partly distributed in similar regions in sub-Saharan Africa (SSA). It is not evident whether their ecologies are mutually exclusive or partially overlapping. In Kyela, a rice-growing area in south Tanzania where both parasites are present, three transects of about 3 km each across the upland–lowland continuum were surveyed in June 2012 and 2013. A total of 36 fields were categorised according to their position on the upland–lowland continuum as High, Middle or Low and soil samples were taken. In each field, parasitic and non-parasitic weed species were identified in three quadrats. Additionally, in two pot experiments with four different moisture levels ranging from wilting point to saturation, influence of soil moisture on emergence and growth of parasites was investigated. Striga asiatica was observed in higher lying drier fields, while R. fistulosa was observed in the lower lying wetter fields. Furthermore, non-parasitic weed species that were exclusive to S. asiatica-infested fields are adapted to open well-drained soils, while species that were exclusive to R. fistulosa fields are typical for wet soils. The experiments confirmed that S. asiatica is favoured by free-draining soils and R. fistulosa by waterlogged soils. These results imply that changes in climate, specifically moisture regimes, will be crucial for future prevalence of these parasitic weeds. The non-overlapping ecological range between their habitats suggests that their distribution and associated problems might remain separate. Thus, management strategies can be focused independently on either species. 2015-04 2016-07-11T13:50:56Z 2016-07-11T13:50:56Z Journal Article https://hdl.handle.net/10568/76125 en Limited Access Wiley Kabiri S, Rodenburg J, Kayeke J, Ast A van, Makokha DW, Msangi SH, Irakiza R, Bastiaans L. 2015. Can the parasitic weeds Striga asiatica and Rhamphicarpa fistulosa co-occur in rain-fed rice? Weed Research 55(2):145-154. |
| spellingShingle | climate change agriculture food security parasitic weed species niche ecology agro-ecosystems soil moisture Kabiri S Rodenburg, J. Kayeke J Ast, A. van Makokha, D.W. Msangi SH Irakiza, R. Bastiaans, L. Can the parasitic weeds Striga asiatica and Rhamphicarpa fistulosa co-occur in rain-fed rice? |
| title | Can the parasitic weeds Striga asiatica and Rhamphicarpa fistulosa co-occur in rain-fed rice? |
| title_full | Can the parasitic weeds Striga asiatica and Rhamphicarpa fistulosa co-occur in rain-fed rice? |
| title_fullStr | Can the parasitic weeds Striga asiatica and Rhamphicarpa fistulosa co-occur in rain-fed rice? |
| title_full_unstemmed | Can the parasitic weeds Striga asiatica and Rhamphicarpa fistulosa co-occur in rain-fed rice? |
| title_short | Can the parasitic weeds Striga asiatica and Rhamphicarpa fistulosa co-occur in rain-fed rice? |
| title_sort | can the parasitic weeds striga asiatica and rhamphicarpa fistulosa co occur in rain fed rice |
| topic | climate change agriculture food security parasitic weed species niche ecology agro-ecosystems soil moisture |
| url | https://hdl.handle.net/10568/76125 |
| work_keys_str_mv | AT kabiris cantheparasiticweedsstrigaasiaticaandrhamphicarpafistulosacooccurinrainfedrice AT rodenburgj cantheparasiticweedsstrigaasiaticaandrhamphicarpafistulosacooccurinrainfedrice AT kayekej cantheparasiticweedsstrigaasiaticaandrhamphicarpafistulosacooccurinrainfedrice AT astavan cantheparasiticweedsstrigaasiaticaandrhamphicarpafistulosacooccurinrainfedrice AT makokhadw cantheparasiticweedsstrigaasiaticaandrhamphicarpafistulosacooccurinrainfedrice AT msangish cantheparasiticweedsstrigaasiaticaandrhamphicarpafistulosacooccurinrainfedrice AT irakizar cantheparasiticweedsstrigaasiaticaandrhamphicarpafistulosacooccurinrainfedrice AT bastiaansl cantheparasiticweedsstrigaasiaticaandrhamphicarpafistulosacooccurinrainfedrice |