Screening preemergence herbicides for weed control in cassava
Weed competition severely constrains cassava root yield in sub-Saharan Africa; thus, good weed control measures, including the use of herbicides, are increasingly important. Herbicide trials were conducted at five locations across eastern, western, and north-central Nigeria over two cropping seasons...
| Autores principales: | , , , , , , , , |
|---|---|
| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
Cambridge University Press
2020
|
| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/108816 |
| _version_ | 1855514416440672256 |
|---|---|
| author | Ekeleme, F. Dixon, A. Atser, G. Hauser, S. Chikoye, David Olorunmaiye, P.M. Olojede, A. Korie, S. Weller, S. |
| author_browse | Atser, G. Chikoye, David Dixon, A. Ekeleme, F. Hauser, S. Korie, S. Olojede, A. Olorunmaiye, P.M. Weller, S. |
| author_facet | Ekeleme, F. Dixon, A. Atser, G. Hauser, S. Chikoye, David Olorunmaiye, P.M. Olojede, A. Korie, S. Weller, S. |
| author_sort | Ekeleme, F. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Weed competition severely constrains cassava root yield in sub-Saharan Africa; thus, good weed control measures, including the use of herbicides, are increasingly important. Herbicide trials were conducted at five locations across eastern, western, and north-central Nigeria over two cropping seasons (2014 and 2015). Nineteen premixed PRE herbicides applied at different rates were evaluated for efficacy on weeds and selectivity on cassava. Manual hoe-weeding at 4, 8, and 12 wk after planting (WAP) and two S-metolachlor + atrazine treatments commonly used by cassava growers were included for comparison. Six of the 19 PRE herbicide treatments (indaziflam + isoxaflutole, indaziflam + metribuzin, flumioxazin + pyroxasulfone, isoxaflutole, acetochlor + atrazine + terbuthylazine, and terbuthylazine + S-metolachlor) consistently provided 80% to 98% broadleaf and grass weed control up to 8 wk after treatment. Overall, PRE herbicide treatments and cassava yield were significantly positively correlated. Herbicide treatments terbuthylazine + S-metolachlor, flumioxazin + pyroxasulfone, diflufenican + flufenacet + flurtamone (respectively, 60 + 60 + 60, 120 + 120 + 120, 90 + 360 + 120, and 135 + 360 + 180 g ha−1), acetochlor + atrazine + terbuthylazine (875 + 875 + 875 g ha−1), S-metolachlor + atrazine (870 + 1,110 g ha−1), oxyfluorfen (240 g ha−1), indaziflam + isoxaflutole (75 + 225 g ha−1), indaziflam + metribuzin (75 + 960 g ha−1), and aclonifen + isoxaflutole (500 + 75 g ha−1) contributed to yields exceeding twice the Nigerian national average of 8.76 tonnes ha−1. These treatments had root yields of 1.4 to 2 times higher than plots that had been hoe-weeded three times. There were some adverse herbicide treatment effects such as delayed cassava sprouting and temporary leaf bleaching observed in indaziflam and diflufenican + flufenacet + flurtamone treatments, whereas sulfentrazone caused prolonged leaf crinkling. The PRE applications alone at rates safe for cassava did not provide adequate season-long weed control; supplemental POST weed control is needed about 10 WAP for satisfactory season-long control. |
| format | Journal Article |
| id | CGSpace108816 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2020 |
| publishDateRange | 2020 |
| publishDateSort | 2020 |
| publisher | Cambridge University Press |
| publisherStr | Cambridge University Press |
| record_format | dspace |
| spelling | CGSpace1088162025-11-11T10:02:10Z Screening preemergence herbicides for weed control in cassava Ekeleme, F. Dixon, A. Atser, G. Hauser, S. Chikoye, David Olorunmaiye, P.M. Olojede, A. Korie, S. Weller, S. cassava roots yields herbicides grasses weed control Weed competition severely constrains cassava root yield in sub-Saharan Africa; thus, good weed control measures, including the use of herbicides, are increasingly important. Herbicide trials were conducted at five locations across eastern, western, and north-central Nigeria over two cropping seasons (2014 and 2015). Nineteen premixed PRE herbicides applied at different rates were evaluated for efficacy on weeds and selectivity on cassava. Manual hoe-weeding at 4, 8, and 12 wk after planting (WAP) and two S-metolachlor + atrazine treatments commonly used by cassava growers were included for comparison. Six of the 19 PRE herbicide treatments (indaziflam + isoxaflutole, indaziflam + metribuzin, flumioxazin + pyroxasulfone, isoxaflutole, acetochlor + atrazine + terbuthylazine, and terbuthylazine + S-metolachlor) consistently provided 80% to 98% broadleaf and grass weed control up to 8 wk after treatment. Overall, PRE herbicide treatments and cassava yield were significantly positively correlated. Herbicide treatments terbuthylazine + S-metolachlor, flumioxazin + pyroxasulfone, diflufenican + flufenacet + flurtamone (respectively, 60 + 60 + 60, 120 + 120 + 120, 90 + 360 + 120, and 135 + 360 + 180 g ha−1), acetochlor + atrazine + terbuthylazine (875 + 875 + 875 g ha−1), S-metolachlor + atrazine (870 + 1,110 g ha−1), oxyfluorfen (240 g ha−1), indaziflam + isoxaflutole (75 + 225 g ha−1), indaziflam + metribuzin (75 + 960 g ha−1), and aclonifen + isoxaflutole (500 + 75 g ha−1) contributed to yields exceeding twice the Nigerian national average of 8.76 tonnes ha−1. These treatments had root yields of 1.4 to 2 times higher than plots that had been hoe-weeded three times. There were some adverse herbicide treatment effects such as delayed cassava sprouting and temporary leaf bleaching observed in indaziflam and diflufenican + flufenacet + flurtamone treatments, whereas sulfentrazone caused prolonged leaf crinkling. The PRE applications alone at rates safe for cassava did not provide adequate season-long weed control; supplemental POST weed control is needed about 10 WAP for satisfactory season-long control. 2020-10 2020-07-20T12:02:45Z 2020-07-20T12:02:45Z Journal Article https://hdl.handle.net/10568/108816 en Open Access application/pdf Cambridge University Press Ekeleme, F., Dixon, A., Atser, G., Hauser, S., Chikoye, D., Olorunmaiye, P.M., ... & Weller, S. (2020). Screening preemergence herbicides for weed control in cassava. Weed Technology, 1-13. |
| spellingShingle | cassava roots yields herbicides grasses weed control Ekeleme, F. Dixon, A. Atser, G. Hauser, S. Chikoye, David Olorunmaiye, P.M. Olojede, A. Korie, S. Weller, S. Screening preemergence herbicides for weed control in cassava |
| title | Screening preemergence herbicides for weed control in cassava |
| title_full | Screening preemergence herbicides for weed control in cassava |
| title_fullStr | Screening preemergence herbicides for weed control in cassava |
| title_full_unstemmed | Screening preemergence herbicides for weed control in cassava |
| title_short | Screening preemergence herbicides for weed control in cassava |
| title_sort | screening preemergence herbicides for weed control in cassava |
| topic | cassava roots yields herbicides grasses weed control |
| url | https://hdl.handle.net/10568/108816 |
| work_keys_str_mv | AT ekelemef screeningpreemergenceherbicidesforweedcontrolincassava AT dixona screeningpreemergenceherbicidesforweedcontrolincassava AT atserg screeningpreemergenceherbicidesforweedcontrolincassava AT hausers screeningpreemergenceherbicidesforweedcontrolincassava AT chikoyedavid screeningpreemergenceherbicidesforweedcontrolincassava AT olorunmaiyepm screeningpreemergenceherbicidesforweedcontrolincassava AT olojedea screeningpreemergenceherbicidesforweedcontrolincassava AT kories screeningpreemergenceherbicidesforweedcontrolincassava AT wellers screeningpreemergenceherbicidesforweedcontrolincassava |