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Silva Lusitana
Print version ISSN 0870-6352
Abstract
FERREIRA, Eugénio Mendes and CASTRO, Isabel Videira e. Residues of the Cork Industry as Carriers for the Production of Legume Inoculants. Silva Lus. [online]. 2005, vol.13, n.2, pp.159-167. ISSN 0870-6352.
Growth and survival of two rhizobial strains, Rhizobium leguminosarum bv. trifolii, and Mesorhizobium ciceri, were used to evaluate residues from the cork industry as potential carriers for production of rhizobial inoculants. A peat-based carrier was used as a control. 41 days after inoculation, the number of viable bacteria was high, about 109 bacteria g-1 for all carriers. Rhizobial survival during storage (450 days) remained stable, between 108 and 109. The cork residues based carriers showed good handling properties and water holding capacities, they were non-toxic and had a nearly neutral pH. All these factors indicate that the use of these carriers is viable for the production of rhizobial inoculants.
Keywords : carriers; cork industry; legume inoculants; Rhizobium.