Tropical Grasslands (1986) Volume 20, 26–29

RHIZOBIUM REQUIREMENTS FOR TWO ACCESSIONS OF GLIRICIDIA MACULATA

R. AKKASAENG1, P.C. WHITEMAN1 and R.A. DATE2

1 Department of Agriculture, University of Queensland, St. Lucia. Qld 4067, Australia.
2 CSIRO, Division of Tropical Crops and Pastures, 306 Carmody Road, St. Lucia, Qld 4067, Australia.

Abstract

Gliricidia maculata has been difficult to nodulate when sown in the field in southern Queensland. Newly isolated strains of Rhizobium from nodules of G. maculata were compared with strains CB905 (from Sesbania) and CB756 (a wide spectrum strain from Macrotyloma). The only effective strains were from G. maculata. Strains CB3049 and CB3092 were the most effective in nitrogen fixation on an accession of G. maculata from Bali, whereas on a West Indian accession strains CB3057 and CB3090 were the most effective. These four strains were used to inoculate the Bali accession sown into soil in a glasshouse pot experiment. The most effective strain (highest plant and nodule dry weight in soil) was CB3090 and it is recommended as a potentially useful inoculum strain for this species.

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