Long-term application of low C:N residues enhances maize yield and soil nutrient pools across Kenya

Simple item page
cg.authorship.typesCGIAR and advanced research instituteen
cg.contributor.affiliationOhio State Universityen
cg.contributor.affiliationInternational Institute of Tropical Agricultureen
cg.contributor.crpAgriculture for Nutrition and Health
cg.contributor.crpMaize
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.crpGrain Legumes
cg.coverage.countryKenya
cg.coverage.iso3166-alpha2KE
cg.coverage.regionAfrica
cg.coverage.regionEastern Africa
cg.creator.identifierMoses Thuita: 0000-0002-6731-9492
cg.creator.identifierbernard vanlauwe: 0000-0001-6016-6027
cg.howPublishedFormally Publisheden
cg.identifier.doihttps://doi.org/10.1007/s10705-019-10005-4en
cg.identifier.iitathemeNATURAL RESOURCE MANAGEMENT
cg.isijournalISI Journalen
cg.issn1385-1314en
cg.issue3en
cg.journalNutrient Cycling in Agroecosystemsen
cg.reviewStatusPeer Reviewen
cg.subject.iitaNATURAL RESOURCE MANAGEMENTen
cg.volume114en
dc.contributor.authorSprunger, C.D.en
dc.contributor.authorCulman, S.W.en
dc.contributor.authorPalm, Cheryl A.en
dc.contributor.authorThuita, Moses N.en
dc.contributor.authorVanlauwe, Bernarden
dc.date.accessioned2019-07-11T10:09:34Zen
dc.date.available2019-07-11T10:09:34Zen
dc.identifier.urihttps://hdl.handle.net/10568/102155
dc.titleLong-term application of low C:N residues enhances maize yield and soil nutrient pools across Kenyaen
dcterms.abstractDeclines in soil fertility and limited access to inorganic nitrogen (N) fertilizer constrain crop production in Sub-Saharan Africa. The incorporation of organic residues could increase nutrient mineralization and replenish soil carbon (C), however, the effect that long-term residue management (10+ years) has on maize (Zea mays L.) yields and soil nutrient pools (C and N) is largely unknown. In four identical long-term trials in Kenya that differ by soil type and climate, we compared maize yield and soil C (0–0.15 m) across four treatments comparing organic inputs of contrasting C:N ratios: tithonia [Tithonia diversifolia (Hemsl.) A. Gray] + N (120 kg N ha−1); tithonia − N (0 kg N ha−1); maize stover + N (120 kg N ha−1); maize stover − N (0 kg N ha−1). On average, maize yields were 92% greater under tithonia compared to maize stover at the sandy sites and in general followed this trend: tithonia + N > tithonia − N = stover + N > stover − N. The continuous application of tithonia also increased soil C and N pools; for instance, mineralizable C was up to 57% greater than that of maize stover at the sandy sites. Increases in yield and nutrient pools under tithonia were less apparent at the clay sites. When exploring the relationship between soil C and maize yield, we found that both mineralizable and processed pools were related to agronomic performance. Our findings demonstrate that low C:N residues could significantly benefit crop production and enhance soil organic matter at sandy sites across Kenya.en
dcterms.accessRightsLimited Access
dcterms.audienceScientistsen
dcterms.available2019-06-05
dcterms.bibliographicCitationSprunger, C.D., Culman, S.W., Palm, C.A., Thuita, M. & Vanlauwe, B. (2019). Long-term application of low C: N residues enhances maize yield and soil nutrient pools across Kenya. Nutrient Cycling in Agroecosystems, 114, 261–276en
dcterms.extent261-276en
dcterms.issued2019-07
dcterms.languageen
dcterms.licenseCopyrighted; all rights reserved
dcterms.publisherSpringeren
dcterms.subjectmaizeen
dcterms.subjectcrop productionen
dcterms.subjectsoil organic matteren
dcterms.subjectnutrientsen
dcterms.subjectcyclingen
dcterms.subjectagroecosystemsen
dcterms.subjectsoil fertilityen
dcterms.subjectafrica south of saharaen
dcterms.typeJournal Article

Files

License bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.75 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

IITA Journal Articles
CRP A4NH outputs
RTB Journal Articles