Rhizobium inoculation trials designed to support a tropical forage legume selection programme

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dc.creatorSylvester-Bradley, Rosemary
dc.date1984-10
dc.date2014-10-02T08:33:10Z
dc.date2014-10-02T08:33:10Z
dc.date.accessioned2026-06-27T14:44:08Z
dc.descriptionThree phases of Rhizobium inoculation trials were carried out as part of a programme to select forage legume germplasm adapted to acid, infertile Oxisols of tropical America. Firstly, a range of tropical forage legumes were evaluated for their response to N fertilization or inoculation with strains previously shown to be effective in Leonard jars, using cores of undisturbed soil or in the field at Carimagua, Meta, Colombia. In pure legume stands onlyCentrosema macrocarpum andC. pubescens showed increases in N yield due to both inoculation and N fertilization;C. brasilianum responded only to N fertilization;Zornia latifolia, Z. brasiliensis andStylosanthes capitata responded to neither treatment. Trials in cores and in grass-legume mixtures showed responses ofDesmodium ovalifolium, Pueraria phaseoloides andS. capitata to N fertilization but not to inoculation. In the second phase of experiments strains were screened in soil cores with 16 ecotypes ofDesmodium, Centrosema, Stylosanthes andPueraria spp. Significant increases in N yield due to inoculation occurred with at least one strain in all the legumes exceptS. guianensis tardio , and in some trials withS. capitata. In the third phase of trials the most effective strains were tested in the field. Significant response ofP. phaseoloides andC. macrocarpum to inoculation at two sites and in the second year after establishment were shown. Further screening trials and field trials at different sites are needed in order to provide better recommendations for inoculation of grazing trials being set up in the region under study.
dc.identifierhttps://hdl.handle.net/10568/44058
dc.identifier.urihttp://hdl.handle.net/123456789/86877
dc.languageen
dc.publisherSpringer
dc.rightsLimited Access
dc.subjectfeed crops
dc.subjectzornia brasiliensis
dc.subjectzornia
dc.subjectbrachiaria decumbens
dc.subjectcentrosema brasilianum
dc.subjectcentrosema macrocarpum
dc.subjectdesmodium canum
dc.subjectdesmodium heterophyllum
dc.subjectdesmodium ovalifolium
dc.subjectestablecimiento
dc.subjectfertilizantes
dc.subjectfijacion de n
dc.subjectinoculacion
dc.subjectllanos orientales
dc.subjectmelinis minutiflora
dc.subjectnodulación
dc.subjectoxisoles
dc.subjectpraderas
dc.subjectpueraria phaseoloides
dc.subjectrhizobium
dc.subjectstylosanthes capitata
dc.subjectstylosanthes guianensis
dc.subjectbacterias nitrificantes
dc.subjectbrachiaria
dc.subjectcentrosema
dc.subjectdesmodium
dc.subjectgramineas
dc.subjectleguminosas
dc.subjectmelinis
dc.subjectminerales y nutrimentos
dc.subjectpueraria
dc.subjectsabanas
dc.subjectsimbiosis
dc.subjectstylosanthes
dc.titleRhizobium inoculation trials designed to support a tropical forage legume selection programme
dc.typeJournal Article

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Centro Internacional de Agricultura Tropical (CIAT)