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    The response of climbing bean to fertilizer and organic manure in the northern province of Rwanda

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    Journal Article (668.5Kb)
    Date
    2020-10
    Author
    Rurangwa, E.
    Vanlauwe, B.
    Giller, K.E.
    Type
    Journal Article
    Review Status
    Peer Review
    Target Audience
    Scientists
    Metadata
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    Abstract/Description
    Climbing beans play a central role in food security of rural households in the densely populated highlands of East and Central Africa. Soil fertility degradation and the lack of nutrient inputs are major limitations to yield of beans and other crops. We conducted field trials in Northern Rwanda in Kinoni and Muko villages to evaluate the effect of mineral N, P, and K fertilizers (both alone and in combination) and farmyard manure on nitrogen fixation and grain yields of climbing bean in smallholder farmers’ fields. The trials were laid down in a randomized complete block design with seven replicate blocks in each village. Manure and fertilizer application led to greater yields in all fields, and the largest yields were achieved when manure was combined with NPK. Large variability in yield between fields was observed. Application of fertilizer together with manure increased the grain yield from 1.5 to 3.9 t ha−1 in Kinoni and from 2.6 to 5.4 t ha−1 in Muko. Fertilizer and/or manure increased stover yield from 0.8 to 2.3 t ha−1 in Kinoni and from 1.5 to 3.4 t ha−1 in Muko. Application of 30 kg P ha−1 and 5 t manure ha−1 led to increased N and P uptake (from 49 to 106 kg N ha−1 and from 6.1 to 12.4 kg P ha−1 in Kinoni and from 46 to 128 kg N ha−1 and from 5.3 to 17.9 kg P ha−1 in Muko). There was no clear relationship between soil fertility characteristics and the response of climbing bean to applied inputs at Muko site. However, at Kinoni site, limited response to manure and NPK application was observed in plots where soil available P and soil exchangeable K were relatively low. Our results show the benefits of using manure along with mineral fertilizers for increased climbing bean yields and nutrient uptake in smallholder farming systems.
    https://dx.doi.org/10.1017/s0014479720000277
    Multi standard citation
    Permanent link to this item
    https://hdl.handle.net/20.500.12478/7727
    IITA Authors ORCID
    bernard vanlauwehttps://orcid.org/0000-0001-6016-6027
    Ken E Gillerhttps://orcid.org/0000-0002-5998-4652
    Digital Object Identifier (DOI)
    https://dx.doi.org/10.1017/s0014479720000277
    Research Themes
    Natural Resource Management
    IITA Subjects
    Agronomy; Food Security; Grain Legumes; Plant Breeding; Plant Production; Soil Fertility
    Agrovoc Terms
    Phaseolus Vulgaris; Nitrogen Fixation; Nutrients; Food Security; Beans; Grain Legumes; Soil Fertility
    Regions
    Africa; East Africa
    Countries
    Rwanda
    Hubs
    Central Africa Hub
    Journals
    Experimental Agriculture
    Collections
    • Journal and Journal Articles4835
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