Evaluation of the use of herbicide (Imazapyr) and fertilizer application in integrated management of Striga asiatica in maize in Malawi

dc.creatorKabambe, V.H.
dc.creatorKanampiu, F.K.
dc.creatorNambuzi, S.C.
dc.creatorKauwa, A.E.
dc.date2013-06-30T05:24:48Z
dc.date2013-06-30T05:24:48Z
dc.date2007
dc.date.accessioned2023-07-17T19:57:13Z
dc.date.available2023-07-17T19:57:13Z
dc.identifier1991-637X­
dc.identifierhttp://hdl.handle.net/10883/3187
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/7509074
dc.descriptionThe parasitic weed species Striga asiatica (L.) Kuntze is one of major constraints in maize production in Malawi. Studies were conducted from 1999/2000 to 2001/2002 seasons to evaluate the effects of seed dressing with imazapyr (an acetolactate synthase [ALS] - inhibiting herbicide) at 0 and 45 g ha-1 and two fertilizer rates (0 and 69N:21P2O5:0+4S kg ha-1) on maize with ALS target site resistance on Striga suppression and grain yield at Chitedze Research Station and farmers? fields. In the first season, imazapyr suppressed Striga emergence across all sites but did not increase yield. In contrast, fertilizer application had no effect on Striga emergence (P>0.05), but significantly increased yield (P<0.05). In the second season results were similar, but in addition the use of herbicide increased yield. In the third season a local hybrid (SC627) was included to compare yield potential of the untreated Imazapyr Resistant (IR) variety. The local check yielded higher than the IR hybrid with or without herbicide treatment, but sustained the highest emergence of witchweeds. The untreated IR hybrid had less Striga than SC627 and more than the treated. Overall, fertilizer use is found to be the single most important factor in increasing maize yield under S. asiatica infection, while herbicide use is important for reducing emergence.
dc.description687-691
dc.formatPDF
dc.languageEnglish
dc.publisherAcademic Journals
dc.publisherhttp://www.academicjournals.org/ajar/abstracts/abstracts/abstracts2007/Dec/Kabambe%20et%20al.htm
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dc.rightsOpen Access
dc.source12
dc.source2
dc.sourceAfrican Journal of Agricultural Research
dc.subjectAGRICULTURAL SCIENCES AND BIOTECHNOLOGY
dc.subjectAcetolactate Synthase
dc.subjectSTRIGA ASIATICA
dc.subjectIMAZAPYR
dc.subjectZEA MAYS
dc.titleEvaluation of the use of herbicide (Imazapyr) and fertilizer application in integrated management of Striga asiatica in maize in Malawi
dc.typeArticle
dc.coverageMalawi
dc.coverageMalawi


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