Abstract

TORREALBA, José Agustín et al. The charcoal rot (Macrophomina phaseolina) in soybean and its management by applications of Trichoderma spp. and Rhizobium sp.. Bioagro [online]. 2015, vol.27, n.3, pp.159-166. ISSN 1316-3361.

Charcoal rot of soybean, caused by Macrophomina phaseolina (Tassi) Goid, is an economically important disease causing damage of varying magnitude in soybean, and shows high incidence and severity when prolonged periods of hot, dry conditions exist. It is known that Trichoderma spp. is a fungus that can parasitize other fungi. Similarly, the bacterium Rhizobium sp. can control the attack of pathogens. A research was conducted to study the effect of soybean inoculation with strains of Trichoderma sp. and native Rhizobium sp. in presence of M. phaseolina. To do this, experiments under field and shadehouse were performed, and the data were analyzed by univariate and principal components. Simple and combined treatments of Trichoderma and Rhizobium resulted in higher values than the control in terms of plant height and biomass, and nodule production. Inoculation of soybean seeds with strains of these microorganisms at the time of planting is a practice that increases plant vigor and protects from infection by M. phaseolina.

Keywords : Biological control; biomass; spatial pattern.

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