Effects of vermicompost and its extract on emergence and growth parameters in Valerian (Valeriana officinalis)

In this experiment, the first was performed to investigate the effect of vermicompost extract (25, 50, 75 and 100%) on the germination index of valerian seed at Petridis. In the second experiment, the effect of solid vermicompost with 5 levels (0, 20, 40, 60 and 80% V) on the emergence index and seedling growth, a greenhouse study was conducted in Faculty of Agricultural Sciences, University of Guilan. Results first experiment showed maximum germination capacity and emergence index also minimum mean germination time T50 obtained 50% vermicompost extract.Treatments 25 and 50% increased the length to shoot and treatment 100% decreased. The second experiment 20%treatment solid vermicompost increased emergence index and fresh weight vigor and decreased mean emergence time. Also, treatment 20 and 40% solid vermicompost increased chlorophyll a, b and total chlorophyll, carotenoid and 90 old day’s plant than control. High concentration solid vermicompost was decreased these parameters. Theresults of this study can be concluded the effect of vermicompost on seed germination and growth seedling id depended on concentration

Keywords:

Chlorophyll , Concentration , Emergence index , Valerian