mehdi taheri asghari; Seyed Reza Miralizadeh Fard
Abstract
In order to investigate the effects of foliar application of humic acid fertilization and mycorrhizal fungi symbiosis on quantitative and qualitative characteristics of Thymus vulgaris L., a factorial layout has been conducted, based on a randomized complete block design with three replications at the ...
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In order to investigate the effects of foliar application of humic acid fertilization and mycorrhizal fungi symbiosis on quantitative and qualitative characteristics of Thymus vulgaris L., a factorial layout has been conducted, based on a randomized complete block design with three replications at the field of the research farm of Azad University, Takestan Branch during 2020-2021 and 2021-2022 years. Experimental factors included three species of mycorrhiza fungi (control, Glomus mosseae, G.etunicatum and G.intradices) and humic acid fertilizer levels included (control, 150 and 300 mg.lit-1). The results showed that the Interaction effect of humic acid and mycorrhiza on the percentage and yield of essential oil and yield was significant. The highest yield of essential oil was obtained from the treatment of 150 mg of humic acid and the application of mycorrhiza G. mosseae, which showed a difference and increase of 154% with the control. Also, the highest amounts of p-cymene and -terpinene which are the most important essential oil compounds in thyme, were obtained from the treatment of 300 mg of humic acid, which showed an increase of 23 and 11%, respectively, compared to the control. The highest amounts of p-cymene and -terpinene were obtained from the treatment of mycorrhiza G.mosseae, which showed an increase of 21 and 26%, respectively, compared to the control. With the obtained results, it can be said that by providing suitable growth conditions for thyme medicinal plant using humic acid and mycorrhizal, it is possible to influence their performance and reduce the use of chemical fertilizers.
mehdi taheri asghari
Abstract
In order to investigate the effects of foliar application of amino acids fertilization and mycorrhizal fungi symbiosis on quantitative and qualitative characteristics of Calendula officinalis L., a factorial layout has been conducted, based on a randomized complete block design with three replications ...
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In order to investigate the effects of foliar application of amino acids fertilization and mycorrhizal fungi symbiosis on quantitative and qualitative characteristics of Calendula officinalis L., a factorial layout has been conducted, based on a randomized complete block design with three replications at the field of the research farm of Islamic Azad University, Takestan Branch during 2017-2018 and 2018-2019 years. Experimental factors include three species of mycorrhiza fungi (control, Glomus mosseae, G.etunicatum and G.intradices) and Soren amino acid fertilizer levels (this commercial compound contains a variety of essential amino acids for the plant) include no foliar application and foliar application in two stages of stem and flowering. The results show that inoculation with mycorrhiza species has been significant for all studied traits in this test. Also, the effect of amino acid fertilizer has had a significant effect on all traits, except essential oil percentage and extract yield. Among the mycorrhizae used in this experiment, Glomus mosseae is able to be superior over other fungi in most traits. The highest seed yield is obtained from amino acid fertilizer and Glomus mosseae with 2343 kg / ha and the highest essential oil yield is in Glomus mosseae with 7.74 kg / ha. Based on the results, it can be concluded that the use of amino acid fertilizers with inoculation with mycorrhiza has a positive effect on the traits of marigold.
mehdi taheri asghari
Abstract
In order to investigate the effect of municipal sewage sludge, Azotobacter, and Azospirillum on some nitrogen indices and fatty acid composition of Canola, a factorial experiment has been conducted based on randomized complete block design with three replications in the field of South Tehran Water and ...
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In order to investigate the effect of municipal sewage sludge, Azotobacter, and Azospirillum on some nitrogen indices and fatty acid composition of Canola, a factorial experiment has been conducted based on randomized complete block design with three replications in the field of South Tehran Water and Wastewater Company during 2016-2017 and 2017-2018. The experiment is a factorial experiment in a randomized complete block design with three replications. The experimental factors include canola seed inoculation in three levels (without inoculation, inoculation with azotobacter, and inoculation with azospirillum) and the use of municipal sewage sludge in five levels (control, recommended fertilizer, 10, 20, and 30 tons of sewage sludge). Results show that the interaction between seed inoculation and sewage sludge treatments on eicosanoic, palmitic, and arachidonic fatty acids has been significant at 1% and on stearic acid at 5%. Aztobacter and 30 tons of sewage sludge treatment (2680 kg/ha) has had the highest grain yield, 23.5% higher than the control treatment (2170 kg/ha). The highest amount of oleic and linoleic acid is obtained from 30 tons of sewage sludge treatment with 61.23% and 18.41%, respectively. Nitrogen uptake efficiency is the highest in fertilizer recommendation treatment with Azotobacter (16.79%). Interaction effects of inoculation and sewage sludge treatments on both trait consumption efficiency and productivity efficiency (agricultural) have been significant in terms of biomass and grain yield. Results indicate that the use of nitrogen fertilizer in proper amount, provided that it is in a timely manner, combined with inoculation could have a greater effect on productivity efficiency (agricultural) index. It can be stated that with appropriate use of sewage sludge, and necessary precautions, it can be a good substitute for nitrogen fertilizers.