Effect of Biofertilizers on Agronomic Criteria of Hyssop (Hyssopus officinalis)

An experiment was conducted under field conditions to evaluate the effects of pure or combinations of biofertilizers on agronomic and quality criteria of Hyssop (Hyssopus officinalis), a medicinal and aromatic plant from Labiateae family at the Research Station of the Faculty of Agriculture, Ferdowsi University of Mashhad, during 2006 and 2007. A complete randomized block design with three replications was used. Treatments containing Azospirillum/Azotobacter(Nitroxin), Azospirillum/Bacillus subtilis/ Pseudomonas fluorescens (Super Nitro Plus), Glomus intraradices (Mycorrhizal inoculant), Pseudomonas fluorescens, Glomus intraradices / Pseudomonas fluorescens, Azospirillum/ Azotobacter/ Glomus intradica / Pseudomonas fluorescens and a control. The results indicated that in general application of biofertilizers enhanced yield and other plant criteria in this plant. In terms of all plant criteria, the plants performed better with application of Super Nitro Plus and a mixture of Glomus intraradices and Pseudomonas fluorescens