Field validation of intraspecific variation in phosphorus use efficiency and nitrogen fixation by provenances of Gliricidia sepium grown in low P soils

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cg.authorship.typesCGIAR and advanced research instituteen
cg.contributor.affiliationInternational Institute of Tropical Agricultureen
cg.contributor.affiliationInternational Atomic Energy Agencyen
cg.contributor.affiliationCommonwealth Scientific and Industrial Research Organisation, Australiaen
cg.coverage.countryNigeria
cg.coverage.countryAustria
cg.coverage.countryAustralia
cg.coverage.iso3166-alpha2NG
cg.coverage.iso3166-alpha2AT
cg.coverage.iso3166-alpha2AU
cg.coverage.regionAfrica
cg.coverage.regionACP
cg.coverage.regionAsia
cg.coverage.regionWestern Africa
cg.coverage.regionEurope
cg.coverage.regionOceania
cg.coverage.regionWestern Europe
cg.coverage.regionAustralia and New Zealand
cg.identifier.doihttps://doi.org/10.1016/0929-1393(94)90032-9en
cg.isijournalISI Journalen
cg.issn0929-1393en
cg.issue2en
cg.journalApplied Soil Ecologyen
cg.reviewStatusPeer Reviewen
cg.subject.iitaLAND USEen
cg.subject.iitaIMPACT ASSESSMENTen
cg.subject.iitaINTEGRATED SOIL FERTILITY MANAGEMENTen
cg.subject.iitaSOIL FERTILITYen
cg.volume1en
dc.contributor.authorSanginga, N.en
dc.contributor.authorDanso, S.en
dc.contributor.authorZapata, F.en
dc.contributor.authorBowen, G.en
dc.date.accessioned2018-09-14T07:37:43Zen
dc.date.available2018-09-14T07:37:43Zen
dc.identifier.urihttps://hdl.handle.net/10568/97372
dc.titleField validation of intraspecific variation in phosphorus use efficiency and nitrogen fixation by provenances of Gliricidia sepium grown in low P soilsen
dcterms.abstractIdentification of tree species or cultivars/provenances that are tolerant to low levels of available soil P will decrease the dependence on P fertilizer for the good establishment and growth of N2-fixing trees. The effects of phosphorus uptake and use efficiency on N2 fixation and growth of provenances of Gliricidia sepium were determined in the greenhouse and also under field conditions. Three selected provenances out of 23 provenances that had in an earlier experiment been examined at low and high P levels (20 mg and 80 mg P kg−1 soil) were further studied at four levels of P application in the greenhouse at IITA, Ibadan using an Alfisol collected from Fashola. The field experiment was conducted at Fashola (Guinea Savanna Zone), southwestern Nigeria. Large differences in growth occurred among the G. sepium provenances at both low and high P levels. Growth responses of the three provenances to increasing P levels were linear in the pot experiment but variable (linear and quadratic) in the field experiment. Field data show that the growth of one provenance (G1) did not respond to P application while provenance G3 required 80 kg P ha−1 to achieve maximum biomass. Provenance G2 responded to P application up to 40 kg P ha−1 and further addition of P depressed its growth, P uptake and N2 fixation. The results of the pot experiment were not completely duplicated in the field experiments. Differences between G. sepium provenances to P uptake and growth were largely related to differences in physiological P use efficiency and root length, especially at low P, both in the pot and field experiments. In general, nodulation was improved by P application, but varied among provenances. G. sepium fixed approximately 61% and 40% of its N from atmospheric N2 in pot and field, respectively. The percentage of N fixed was affected by the low rate of P application i.e. 20 kg P ha−1 and at high rates of P, no further increase in percentage N2 fixed occurred.en
dcterms.accessRightsLimited Access
dcterms.bibliographicCitationSanginga, N., Danso, S., Zapata, F. & Bowen, G. (1994). Field validation of intraspecific variation in phosphorus use efficiency and nitrogen fixation by provenances of Gliricidia sepium grown in low P soils. Applied Soil Ecology, 1, 127-138.en
dcterms.extentpp. 127-138en
dcterms.issued1994-06
dcterms.languageen
dcterms.licenseCopyrighted; all rights reserved
dcterms.publisherElsevieren
dcterms.subjectfield trialsen
dcterms.subjectsoilen
dcterms.typeJournal Article

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