Matei Sorin, Matei Gabi-Mirela and Dumitrașcu Monica
Hyperparasitism was evidenced when Trichoderma developed its own structures around the hyphae of pathogen, emitted haustoria inside it to feed and formed pustules that overgrew Fusarium colony.
Biochemical interaction was revealed by the existence of yellow metabolites more intensely released in the inhibition zone, well visible on the back side of the Petri dish.
The results of the research carried out demonstrated the existence of microbial speciesdiversity in soil from HNV agriculture system (Apold, Mureș county), including
Gabi-Mirela Matei, Sorin Matei and Victoria Mocanu
determined by substrate induced respiration method (SIR) and expressed as mg C x kg -1 dry soil and respectively mg CO 2 x 100 g -1 soil ( 15 ).
Ecological parameters (structural indices) represented by the total counts, relative abundance, species richness (S), speciesdiversity (H’), homogeneity (equitability)(ε) and species frequency revealed the particularities of each community and the status of a certain species.
The frequency of each taxa registered allowed their grouping in 4 classes of constancy, respectively in euconstant, constant, accessory and