maryam habibi; faeze zaefarian; farhad rejali; nadali bagheri
Abstract
In order to investigate the effect of Arbuscular mycorrhizal fungi in Saffron rhizosphere on yield and nutrient uptake, a study has been conducted as split plot factorial based on a completely randomized design with three replications in the institute of Soil and Water research in Karaj, during 2017-2020. ...
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In order to investigate the effect of Arbuscular mycorrhizal fungi in Saffron rhizosphere on yield and nutrient uptake, a study has been conducted as split plot factorial based on a completely randomized design with three replications in the institute of Soil and Water research in Karaj, during 2017-2020. The treatment is consisted of irrigation regime as the main factor in three levels (complete irrigation as control, water interruption at the beginning of the growing season (mild restriction water), and water interruption at the beginning and in the middle of the growing season (severe restriction water)), sowing media in three levels (no organic fertilizer, vermicompost (20 ton ha-1), and biochar (10 ton ha-1) and Arbuscular mycorrhizal fungal in three levels (no application, isolate a, and isolate b) as the subfactor. Based on the molecular findings, both isolates, isolated from saffron rhizosphere, belong to Rhizophagus irregularis. Results from this study show that the highest fresh yield of flowers, i.e. phosphorus and potassium in the leaves of 7.76 g per pot, 1032.4.4 and 24876.8 mg kg-1, respectively, belongs to the complete irrigation× biochar× strain b treatment. Complete irrigation× vermicompost× strain b treatment has had the highest percentage of nitrogen (1.757) in the leaves. The highest fresh and dried yield of stigma (0.358 and 0.062 gr per pot, respectively) has been observed in complete irrigation × biochar treatment. Identification of native mycorrhizal fungi and its production as well as the use of organic fertilizers can play an important role in sustainable production of this plant.
Saeideh Maleki Farahani; Mahdi Aghighi Shahverdi
Abstract
To evaluate the effect of nano-iron chelate and also to make a comparison with effect of EDDHA iron chelate on saffron, an experiment was conducted as factorial based on a randomized complete block design with six treatments and three replications in Shahed University, Tehran in 2011 and 2012. Treatments ...
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To evaluate the effect of nano-iron chelate and also to make a comparison with effect of EDDHA iron chelate on saffron, an experiment was conducted as factorial based on a randomized complete block design with six treatments and three replications in Shahed University, Tehran in 2011 and 2012. Treatments included iron fertilizer (Nano chelate and common chelate) in three levels (zero, 450 and 900 g/hairon). The results showed that all traits except carotenoid, chlorophyll a concentration and leaf width affected by type and amount of iron fertilizer or their interaction. Saffron yield increased by both iron sources (about 50 percent). Application of 10 kg/ha of nano-iron chelate fertilizer, increased dry stigma yield, fresh flower weight, flower number, leaf number, main corm diameter and total corm weight of saffron compared to control though they were in some cases two times compared to control. Totally, results indicated more effectiveness of nano-iron at five kg/ha nano iron chelate fertilizer and 10 kg/ha common iron chelate fertilizer had the same effects on most of the traits. It seems that soil Fe deficiency and nano chelate efficacy in slow releasing may lead to saffron yield increment.