Perlite as a carrier for bacterial inoculants

Growth and survival of Rhizobium leguminosarum bv. phaseoli, R. tropici, Bradyrhizobium japonicum and Bacillus megaterium in peat and perlite-based inoculants were evaluated. In general, survival was similar for all strains in both carriers. Better survival was observed when inoculants were maintain...

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Bibliographic Details
Published in:Soil biology & biochemistry 2000-04, Vol.32 (4), p.567-572
Main Authors: Daza, A, Santamarı́a, C, Rodrı́guez-Navarro, D.N, Camacho, M, Orive, R, Temprano, F
Format: Article
Language:English
Subjects:
Bacillus megaterium
Bacterial inoculants
Bacterial survival
Bradyrhizobium japonicum
Field experiments
Peat-and perlite-based inoculants
perlite
Rhizobium leguminosarum
Symbiotic properties of inoculants
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Summary:Growth and survival of Rhizobium leguminosarum bv. phaseoli, R. tropici, Bradyrhizobium japonicum and Bacillus megaterium in peat and perlite-based inoculants were evaluated. In general, survival was similar for all strains in both carriers. Better survival was observed when inoculants were maintained at 4°C compared to 28°C. Studies with two different stickers suggested the existence of interactions between carriers and adhesives and showed that combination of a sucrose adhesive with the perlite carrier gave better survival of bacteria on seeds. Bean and soybean field experiments indicated that perlite-based inoculants produced similar number of nodules, nodule dry weight, crop yield and nitrogen content, as peat-based inoculants.
ISSN:0038-0717
1879-3428
DOI:10.1016/S0038-0717(99)00185-6