Quantitative and qualitative changes of Eryngium caeruleum under the influence of biological factors

摘要

Objective:Humans have long used volunteer edible for food purposes,but with the advancement of Agricultural science,the use of native wild plants has become less important and today,with increasing population and food shortages,on the one hand,the cost of cultivation and water supply and Suitable agricultural soil,on the other hand,should once again be considered as a secondary resource alongside other food sources.The increasing use of chemical fertilizers has caused irreparable environmental and health damage.Eryngium caeruleum is a perennial and native plant that normally grows in autumn and spring.Materials and methods:In order to study the impact of different planting densities and biological fertilizers on Eryngium caeruleum yield and essential oil content,an experiment was conducted in 2013 in Sari based on a factorial randomized complete block design with 9 treatments and 5 replications.The factors included Eryngium caeruleum with 3 density levels of(1030,2030 and 3030 cm),mycorrhiza at 2 inoculated and non-inoculated levels and Azotobacter at 2 levels of inoculated with seeds and non-inoculated.Results:The results showed that the mycorrhizal symbiosis treatments and Azotobacter application had a significant effect on all measured characteristics and increased the measured characteristics in the experimental group compared to the control group.The amount of naphthalene was obtained from mycorrhizal coexistence of 70.33%and the application of Azotobacter 3.33%and control 0.69.