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Screening preemergence herbicides for weed control in cassava

dc.contributor.authorEkeleme, F.
dc.contributor.authorDixon, A.
dc.contributor.authorAtser, G.
dc.contributor.authorHauser, S.
dc.contributor.authorChikoye, D.
dc.contributor.authorOlorunmaiye, P.M.
dc.contributor.authorOlojede, A.
dc.contributor.authorKorie, S.
dc.contributor.authorWeller, S.
dc.date.accessioned2020-08-13T10:29:07Z
dc.date.available2020-08-13T10:29:07Z
dc.date.issued2020-02-17
dc.identifier.citationEkeleme, 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.
dc.identifier.issn0890-037X
dc.identifier.urihttps://hdl.handle.net/20.500.12478/6929
dc.description.abstractWeed 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.
dc.language.isoen
dc.subjectCassava
dc.subjectRoots
dc.subjectYields
dc.subjectHerbicides
dc.subjectGrasses
dc.subjectWeed Control
dc.titleScreening preemergence herbicides for weed control in cassava
dc.typeJournal Article
cg.contributor.crpMaize
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationFederal University of Agriculture, Abeokuta
cg.contributor.affiliationNational Root Crops Research Institute, Nigeria
cg.contributor.affiliationPurdue University
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.coverage.hubSouthern Africa Hub
cg.coverage.hubHeadquarters and Western Africa Hub
cg.researchthemeBiotech and Plant Breeding
cg.researchthemeNatural Resource Management
cg.researchthemePlant Production and Health
cg.identifier.bibtexciteidEKELEME:2020
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectAgronomy
cg.iitasubjectCassava
cg.iitasubjectNatural Resource Management
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Health
cg.iitasubjectPlant Production
cg.iitasubjectWeeds
cg.journalWeed Technology
cg.accessibilitystatusOpen Access
cg.reviewstatusPeer Review
cg.usagerightslicenseCreative Commons Attribution 4.0 (CC BY 0.0)
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.1017/wet.2020.26
cg.iitaauthor.identifierFriday Ekeleme: 0000-0001-6178-2606
cg.iitaauthor.identifierStefan Hauser: 0000-0002-6329-7783
cg.iitaauthor.identifierDavid Chikoye: 0000-0002-6047-9821


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