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    Performance of elite maize genotypes under selected sustainable intensification options in Kenya

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    Journal Article (2.399Mb)
    Date
    2020-04-01
    Author
    Rusinamhodzi, L.
    Makumbi, D.
    Njeru, J.M.
    Kanampiu, F.
    Type
    Journal Article
    Review Status
    Peer Review
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Combining different cropping and tillage systems with different genotypes across several cropping seasons can reveal opportunities for sustainable intensification (SI). The objective of this study was to assess the performance of six maize genotypes under intercropping with conservation tillage (no-till) – two promising options for SI. The experiment was carried out over three years (or six cropping seasons) at Kiboko Research Station, Kenya with sole cropping and mouldboard ploughing as baseline production systems. Results showed that maize genotypes and cropping systems had a significant effect on yield, but the effect of tillage was not significant. Moreover, there was no significant interactive effects of the tested factors on maize yield. The maize genotype CKH10085 had the highest yield of 7.7 t ha−1 under sole cropping yet it also recorded the largest yield penalty due to intercropping of 1.1 t ha−1. On the other hand, genotype CKH10717 maintained the same average yield of 7.1 t ha−1 in both conventional and conservation tillage systems. The commercial genotype genotype CKH10080 and CKH08051 were more stable than the other experimental genotypes under the variable growing and management conditions. These two genotypes are of intermediate maturity and drought tolerance, two critical attributes to improved maize production. Intercropping reduced maize yields due to increased competition, for example the overall yield of sole cropping was 7.1 t ha-1 compared with 6.4 t ha-1 under intercropping; representing an overall yield penalty of 0.7 t ha-1. The differences in performance of maize genotypes revealed opportunities to deploy genotypes to reduce risk or maximize yield, depending on the biophysical circumstances and the production objective of the farmer.
    https://dx.doi.org/10.1016/j.fcr.2020.107738
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/7407
    IITA Authors ORCID
    Fred Kanampiuhttps://orcid.org/0000-0002-2480-6813
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1016/j.fcr.2020.107738
    Research Themes
    Natural Resource Management
    IITA Subjects
    Agronomy; Cowpea; Crop Systems; Food Security; Genetic Improvement; Grain Legumes; Maize; Plant Breeding; Plant Genetic Resources; Plant Health; Plant Production
    Agrovoc Terms
    Conservation Agriculture; Conventional Tillage; Maize; Cowpeas; Intercropping; Sustainability; Genotypes; Kenya
    Regions
    Africa; East Africa
    Countries
    Kenya
    Hubs
    Central Africa Hub
    Journals
    Field Crops Research
    Collections
    • Journal and Journal Articles4835
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