Inoculation of Mimosa latispinosa Lam with the Commercial Arbuscular Mycorrhizal Fungus Rhizophagus irregularis DAOM 197198, and Bradyrhizobium spp. Under Nursery Production Conditions in South-East Madagascar
Journal Title: Tropicultura
ISSN: 0771-3312 (Print); 2295-8010 (Online)
LCC Subject Category: Agriculture
Country of publisher: Belgium
Language of fulltext: French, Spanish, English, Dutch
Full-text formats available: PDF
P. Khasa, D.
Abstract | Full Text
Qit Madagascar Minerals (QMM) has planned several actions to reduce the environmental footprint of its mining project located near the city of Fort-Dauphin (Madagascar). One of these actions is the reclamation of a portion of its mined sites. Different symbiotic strains were tested as bio-enhancers for the ecological restoration using Mimosa latispinosa Lam, a native and pioneer shrub. The symbiotic strains tested in nursery were the commercial strain of arbuscular mycorrhizal fungus, Rhizophagus irregularis DAOM197198, and two local strains of Bradyrhizobium spp., STM1415 and STM1447, inoculated alone or dually with the arbuscular mycorrhiza. Treatments did not significantly increase the plant height and dry mass. However, plants grown in tyndallized soil had better growth than those in unsterilized soil. Results obtained twenty weeks after inoculation suggest that soil tyndallization (heating at 100°C and at atmospheric pressure of 700 kPa during three hours) is an effective method for nursery production of high quality seedlings of M. latispinosa.