STUDY OF A MICROBIAL INOCULUM ON SEVERAL BIOCHEMICAL INDICES IN SUNFLOWER (HELIANTHUS ANUUS L.)

The study of the complex interaction between rhizospheric bacteria and plant roots represents a very important and actual problem in microbiology. The use of bacteria that stimulate plant growth – PGPR (plant growth promoting rhizobacteria) – as biofertilizers is one of the most promising biotechnologies used for the increase of the primary production with reduced amounts of chemical fertilizers (Lemanceau, Alabouvette, 1993).