Effects of mycorrhizal symbiosis, the use of vermicompost and compost tea on some morphological characteristics of Mentha spicata

The genus Mentha includes 25–30 species that grow under cultivation from tropical to temperate climate of America, Europe, China, Brazil, India, Australia, and South Africa. Cultivation of medicinal plants with organic fertilizers and biological, pharmaceutical and negative effects on the quality of their performance reduces, (Griffe et al., 2003). Sustainable agriculture based on the use of bio-fertilizers for the purpose of eliminating or significantly reducing the use of chemical inputs, the optimal solution for overcoming these problems is comes to. Of biofertilizers contain preservatives densely populated beneficial soil organisms or for one or more metabolic products are available to improve soil fertility and appropriate supply of nutrients needed by plants in a sustainable agricultural system used (Saleh Rastin, 2001). The main aims of this study were the effect of Mycorrhizal symbiosis, use of Vermi compost and Compost tea on growth, yield and quality Melissa officinalis. Field experiment was carried out at Sari (53° 63´ E and 36° 82´ N and a height 43.3 meter from sea level), Mazadaran province, Iran in 2014-2015. The soil chemical characteristics were included 7.30 pH, 2.1% organic carbon, 1.15% total nitrogen, 5.5 ppm phosphorous and 280 ppm potassium. The trial was set up as a factorial experiment in a randomized complete block design with 4 replicates. The experimental factors were included biofertilizer with three levels (inoculation with Mycorrhiza, inoculation with vermi compost and compost tea. For mycorrhiza treatments, Glomus mosseae strain was applied at 10% of each pot time of sowing. vermi compost 10% of each pot with animal origin was applied Compost tea with a volume of 1liters at the 4-5 leaf stage were sprayed on plant leaves. Data analysis All measurements were analyzed of variance with the using of SAS software. Means were evaluated by LSD test. The results showed that The combination of low input and ecological systems and Mycorrhizal symbiosis inoculation and organic fertilizers application such as Compost and vermi compost can substitute chemical fertilizers.The results of the study showed that organic fertilizers and mycorrhizal had significant impact on all measured characteristics and increased dry and fresh weight characteristics when compared with those of the control group So that the fresh weight, Leaf width were obtained from the mycorrhizal, compost tea and vermicomposting treatment. The application of vermicomposting, compost tea and mycorrhizal symbiosis through making the nutrients available increased plant growth, yield components and improve Mentha spicata quantitative characteristics.