Abundance of culturable phosphate-solubilizing bacteria in agricultural soils and characterization of isolates with biofertilizing potential

FERNANDEZ L; AGARAS, B; WALL LG; VALVERDE C

Mar del Plata

Congreso; VIII Congreso Argentino de Microbiología General SAMIGE; 2012

SAMIGE

As part of a multidisciplinary public?private consortium created in 2009 to study soil biology related to crop productivity under sustainable agricultural management (BIOSPAS), we aimed: 1) to evaluate the influence of cropping practices under no-till management on the community structure (abundance and diversity) of phosphate-solubilizing bacteria (PSB); 2) to isolate and characterize PSB isolates with biofertilizer potential already adapted to local soil conditions. Top soil (0-10 cm) samples were collected in agricultural plots from 4 locations across a West-East transect in the most productive region of the Argentinean Pampas. For each location, plots under recommended agricultural practices (with crop rotation, nutrient reposition, and rational pesticide use) or under discouraged practices, were sampled in 2010, both in summer (February) and in late winter (September)?. (SIGUE)