EFFECT OF USING SINGLE AND COMPOSITE INOCULATION WITH Azospirillum brasilense, Bacillus megaterium var. phosphaticum AND Glomus macrocarpus FOR IMPROVING GROWTH OF Zea mays

IMPACT OF COMPOSED INOCULATION WITH N2-FIXING-, PHOSPHATE-SOLUBILIZING BACTERIA AND VESICULAR-ARBUSCULAR MYCORRHIZA ON GROWTH AND NUTRITION OF MAIZE PLANTS IN A CALCAREOUS SOIL