ABSTRACT
Background: The vermicompost and compost as an alternative of chemical fertilizers for plant nutrient and improvement soil conditions is one of the principles of sustainable agriculture, environmental protection and food safety
Objective: This research was conducted to evaluate the effects of different amounts of municipal solid waste compost and vermicompost on quantitative and qualitative traits of lemon verbena
Methods: Greenhouse experiment was conducted as factorial based on randomized complete blocks design with three replications. In this study three the ratio of the volume of municipal solid waste compost and vermicompost with loamy soil containing 0: 100, 90: 10 and 80: 20 were studied
Results: Effects of municipal compost and vermicompost on all traits were significant [P<0.05] and caused increasing dry weight, plant height, number of leaves, chlorophyll index, photosynthesis, essential oil percentage and oil components. So that level of 20% for each fertilizer had the greatest impact on the studied traits than the control. The interaction effect of compost and vermicompost were significant on dry weight and essential oil percentage [P<0.01], photosynthesis, limonene and linalool percentage of essential oils [P<0.05], But had no significant effect on plant height, number of leaves, chlorophyll index and percentage of essential oil linalool
Conclusion: The effect of vermicompost application was better than compost in all studied traits. Combined use of compost and vermicompost improved qualitative and quantitative traits of lemon verbena compared to individual consumption. But in the treatment of 20% vermicompost with 20% compost was obtained best result. Therefore fertilizers complete each other's effects
ABSTRACT
Background: Salinity is one of the most important factors limiting growth and crop production. Mycorrhizal fungi as a biological fertilizer provides food needs plants and can be useful in decrease the effects of environmental stresses on plants
Objective: Improving quantitative and qualitative traits of anise plant using mycorrhizal fungi under salt stress
Methods: This study was done in greenhouse of the research farm of the Islamic Azad University [Saveh branch] as factorial based on randomized complete blocks design. The first factor was mycorrhiza inoculation in three levels of non-inoculated, inoculated with Glomus intraradices strain and inoculation by Glomus mosseae strains and second factor was salinity in three levels control or non-saline water, salinity 50 Mm and 100 Mm
Results: The salinity and mycorrhiza affected all studied traits [P<0.01]. The interaction of salinity and mycorrhiza was significant on the number of seeds per plant, Essential oil percentage of seed and K concentration in leaves [P<0.01], plant height, plant dry weight, number of umbels per plant, number of shed in the umbrella, number of seeds in the shed and sodium concentration in leaves [P< 0.05]. Increasing soil salinity decreased all the studied traits, So that greatest damage was observed at 100 Mm salt. Of course salinity decreased sodium concentration of leaves. Also mycorrhizal inoculation improved all the studied traits in the saline and control condition than non inoculated plants
Conclusion: The results showed that mycorrhizal inoculation with both strains improved plants growth and essential oil of anise in salinity conditions, and effect of Glomus mosseae strain was better on anise than Glomus interaradices strain