Abundance, diversity and prospecting of culturable phosphate solubilizing bacteria on soils under crop-pasture rotations in a no-tillage regime in Uruguay

► We studied the effect of crop/pasture rotations on bacterial soil communities. ► Focus was on phosphate solubilizing bacteria (PSB) and its potential inoculant use. ► Abundance and diversity of PSB was different for one year. ► We isolated 250 PSB and classified them according to their solubilization potential. ► Ten out of 12 of the best solubilizers belong to the genus Pseduomonas.