Abstract

DIAZ FRANCO, Arturo et al. Plant traits, soil and productivity between fertilized sorghum and inoculated with arbuscular mycorrhizal. Rev. Mex. Cienc. Agríc [online]. 2014, vol.5, n.3, pp.379-390. ISSN 2007-0934.

Inoculation with mycorrhizal fungi is an alternative to improve the biological balance of the soil and reduce the use of inorganic fertilizer (IF). For five consecutive years (2002-2006), some characteristics of soil and plant sorghum grown with mycorrhizal fungi inoculation Rhizofagus intraradices (RI) and fertilized with 60-2000 control (FI) were determined. Grain yield was similar between treatments during the five years, although the inoculated RI exceeded 17.7 % ($ 216.00 ha^-1) benefit-cost relative to the FI relationship. Chlorophyll content, plant height, biomass, pH, organic matter, electrical conductivity, P and K showed no statistical significance between both treatments. The soil N with FI exceeded 6. 7 mg kg^-1 soil inoculation with RI. In contrast, root biomass, the number of spores of arbuscular mycorrhizal fungi in soil and soil CO₂ emission increased with mycorrhizae. The impact of R. intraradices showed higher profitability of sorghum production (savings of $ 926.00 ha^-1) and biological activity in the soil.

Keywords : Sorghum bicolor; Glomus intraradices; Rhizofagus intraradices; soil fertility; nutrition.

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