Green Strategy for Maize Varietal Selection and Identification of Suitable Sites in Drought-Prone Ecologies in Southern Guinea Savanna of Nigeria

Takim, Felix O. (2017). Green Strategy for Maize Varietal Selection and Identification of Suitable Sites in Drought-Prone Ecologies in Southern Guinea Savanna of Nigeria. UNU-INRA Working Paper. United Nations University Institute for Natural Resources in Africa.

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  • Sub-type Working paper
    Author Takim, Felix O.
    Editor Mutandwa, Edward
    Atewamba, Calvin
    Yong Nje, Dorothé
    Nutakor, Praise
    Title Green Strategy for Maize Varietal Selection and Identification of Suitable Sites in Drought-Prone Ecologies in Southern Guinea Savanna of Nigeria
    Series Title UNU-INRA Working Paper
    Volume/Issue No. 25
    Publication Date 2017-09-01
    Place of Publication Accra
    Publisher United Nations University Institute for Natural Resources in Africa
    Pages xi, 55
    Language eng
    Abstract Drought stress is the most important environmental constraint contributing to grain yield instability of maize (Zea mays L.). This study extracted multi-environment trial data sets from southern Guinea savanna of Nigeria maize trials using Additive Main Effects and Multiplicative Interaction (AMMI) and Genotype and Genotype-Environment (GGE) biplot models which assessed the performance of drought tolerant (DT) maize genotypes and identified best genotypes for suitable sites. The impact of environmental changes and economic implications of producing DT maize were estimated. The test environments contributed about 75-100% of the total variation in grain yield. The ideal locations for DT maize cultivation were identified. Ilorin/Ballah, Ejiba/Mokwa and Kishi/Badeggi are core test locations for evaluation of early OPVs, intermediate/late OPVs and Hybrids, respectively. The following promising genotypes are recommended for further evaluation in farmer’s fields: TZE-Y-DT-Str-C4 (early OPV), White-DT-STR-SYN (intermediate/late maturing OPV), TZE-W-Pop-DT STR-C5 (early maturing hybrid) and TZEEI 3 x TZEEI 46(extra early genotype). The potential impact of investing in drought tolerant maize shows an economic return of US$ 571 and US$ 1426 per hectare for cultivating OPVs and hybrids, respectively. The study shows that maize yields increase with more seasonal rainfall and decrease with higher temperatures. However, increased rainfall variability during the growing season reduces yields for maize. Thus, simultaneous considerations of technological improvements and the development of the overall availability and predictability of water resources are likely required to see sustainable improvements in maize production given projected climate trends and variability.
    UNBIS Thesaurus FOOD SECURITY
    CLIMATE CHANGE
    Copyright Holder United Nations University Institute for Natural Resources in Africa
    Copyright Year 2017
    Copyright type Fair use permitted
    ISBN 978998863324
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    Created: Thu, 31 Aug 2017, 20:24:16 JST by Praise Nutakor on behalf of UNU INRA