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Acta Biológica Colombiana

Print version ISSN 0120-548X

Abstract

GALINDO, TANIA et al. Microbial Inoculantes Effects on Growth Promotion of Mangrove and Citrullus vulgaris San Andrés Isla, Colombia. Acta biol.Colomb. [online]. 2006, vol.11, n.1, pp.83-97. ISSN 0120-548X.

In order to test the effect of two microbial inoculants (obtained from red and black mangrove roots) on the growth and stability of mangrove and watermelon plants, four treatments were carried out in San Andres Island, Colombia. The treatments consisted in the application of the inoculants in: A. germinans propagules collected in a mangrove area, and then individually planted in gavels with sun-pasteurized soil (in order to decrease the microbial load), A. germinans and R. mangle plants collected in the proximity of nursery trees, A. germinans and R. mangle planted and maintained in nursery, and in Citrullus vulgaris seeds planted in a traditional cultivar without chemical fertilizers. The growth and vegetative development variables were: number of nodes, number of leaves and steam length. The inoculants (phosphate solubilizing microorganisms -PSM- and nitrogen fixing bacteria -NFB-) were applied in the mentioned vegetable material, doing measures during three months. The results show a positive effect on growth measured by steam length in plants treated specifically with the inoculants in C. vulgaris and A. germinans seedlings maintained in nursery.

Keywords : Mangroves; Plant Growth Promoting Microorganisms; Restoration; Biofertilizers.

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