The research carried out by our team between 2004 and 2006 aimed the obtaining of microbial inoculants having with biostimulation activity in order to promote them in agricultural technologies. A bacterial (Bacillus subtilis) and fungal (Trichoderma sp.) biomass has been obtained for which several conditioning modes were studied: polysaccharides like pullulan, alginate. The bioproducts thus obtained have been tested for their resistance to thermic and hydric stress. The best results have been obtained in the case of cells alginate immobilized (for thermic stress), and in pullulan immobilized cells (for hydric stress). We also studied the influence of the immobilized biomass on wheat in laboratory conditions. The use of microbial inoculants had a positive effect on seeds germination (plus 10-17.00% comparative the control). Research continues in order to determine the best methods to apply the microbial agents; to assess their behaviour in the ecologic niche where they are introduced; to develop and to optimize the implementation technologies and to integrate them with the conventional technologies, as well as to quantify the influence of microbial agents on the quality of agricultural production.

microbial inoculations; immobilization; Trichoderma; Bacillus

Presentation: oral