Show simple item record

dc.contributor.authorKamara, A.
dc.contributor.authorEwansiha, S.U.
dc.contributor.authorMenkir, A.
dc.date.accessioned2019-12-04T11:03:26Z
dc.date.available2019-12-04T11:03:26Z
dc.date.issued2013-04
dc.identifier.citationKamara, A., Ewansiha, S.U. & Menkir, A. (2014). Assessment of nitrogen uptake and utilization in drought tolerant and Striga resistant tropical maize varieties. Archives of Agronomy and Soil Science, 60(2), 195-207.
dc.identifier.issn0365-0340
dc.identifier.urihttps://hdl.handle.net/20.500.12478/1064
dc.descriptionOnline First (Early view)
dc.description.abstractMaize (Zea mays L.) is an important food crop in the Guinea savannas of Nigeria. Despite its high production potential, drought, Striga hermonthica parasitsim, and poor soil fertility particularly nitrogen deficiency limit maize production in the savannas. Breeders at IITA have developed drought- and Striga-tolerant cultivars for testing, dissemination, and deployment in the region. Information on the response of these cultivars to N fertilization is, however, not available. This study evaluated grain yield, total N uptake (TNU), N uptake (NUPE), N utilization (NUTE), and N use efficiency (NUE) of selected maize cultivars along with a widely grown improved maize cultivar at two locations in the Guinea savannas of northern Nigeria. Maize grain yield increased with N application. The average grain yield of the maize cultivars was 76% higher at 30, 156% higher at 60, and 203% higher at 120 kg N ha?1 than at 0 kg N ha?1. This suggests that N is a limiting nutrient in the Nigerian savannas. Five drought-tolerant cultivars produced consistently higher yields when N was added at all levels. These cultivars had either high NUPE or NUTE confirming earlier reports that high N uptake or NUTE improves maize grain yield. The study also confirms earlier reports that maize cultivars that are selected for tolerance to drought are also efficient in uptake and use of N fertilizer. This means that these cultivars can be grown with application of less N fertilizer thereby reducing investment on fertilizers and reduction in environmental pollution.
dc.language.isoen
dc.subjectMaize
dc.subjectStriga
dc.subjectCultivars
dc.subjectNitrogen Fertilizers
dc.subjectDrought Tolerance
dc.titleAssessment of nitrogen uptake and utilization in drought tolerant and Striga resistant tropical maize varieties
dc.typeJournal Article
dc.description.versionPeer Review
cg.contributor.crpMaize
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationUniversité du Bénin
cg.coverage.regionAfrica
cg.coverage.regionWest Africa
cg.coverage.countryNigeria
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectMaize
cg.journalArchives of Agronomy and Soil Science
cg.howpublishedFormally Published
cg.accessibilitystatusLimited Access
local.dspaceid78062
cg.identifier.doihttps://dx.doi.org/10.1080/03650340.2013.783204


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record