S.H. Davoudi; A. Biabani; A. rahemi-karizaki; S.A.M. modares sanavi; E. Gholamalipor Alamdari; M. Zarei
Abstract
To investigate the effect of iron and zinc chelates on some quantitative and qualitative characteristics of medicinal plant black cumin (Nigella sativa L.), a factorial experiment was conducted in a randomized complete block design with three replications in two areas (the research farm of 1- Gonbad ...
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To investigate the effect of iron and zinc chelates on some quantitative and qualitative characteristics of medicinal plant black cumin (Nigella sativa L.), a factorial experiment was conducted in a randomized complete block design with three replications in two areas (the research farm of 1- Gonbad Kavous University in Golestan province and 2- Agriculture Faculty of Tarbiat Modares University in Tehran province). Experimental treatments included control )spray with pure water), and separate foliar spray of iron: iron nano-chelate at two levels of 1.5 and 4 per 1000 and iron chelate at 3 per 1000 and zinc: zinc nano-chelate at two levels of 1.5 and 3 per 1000 and zinc chelate at 3 per 1000. The treatments were applied in the 8-10 leaf stage and at the time of filling the capsules. The application of nano forms of iron and zinc chelates compared to the common forms had a significant relationship with yield and yield components and qualitative characteristics and increased them. Concentrations of 4 per 1000 of iron nano-chelate and 3 per 1000 of zinc nano-chelate caused the highest increase in seed yield (217.47 g m-2 in Gonbad and 288.67 g m-2 in Tehran), biological yield (582 g m-2 in Gonbad and 337.2 g m-2 in Tehran), harvest index (37.43% in Gonbad and 76.46% in Tehran), and oil percentage and yield. The highest numerical values for cell leakage (57.70 µmol g-1FW in Gonbad and 64.72 µmol g-1FW in Tehran) and prolin (13.40 mg g-1FW in Gonbad and 11.51 mg g-1FW in Tehran) were related to iron and zinc chelate treatments (common forms). Based on the results, the application of the nano form of iron and zinc, even at low concentrations, could positively affect the quantitative and qualitative yield.
Z. Valinezhad; A. Gholizadeh; M. Naeemi; E. Gholamalalipour Alamdari; M. Zarei
Abstract
In order to investigate the effect of vermicompost and mycorrhizal fertilizers on Stevia rebaudiana Bertoni, a factorial experiment was conducted in a completely randomized design with four replications in the research greenhouse of Agriculture College of Gonbad Kavous University in 2016-2017. The First ...
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In order to investigate the effect of vermicompost and mycorrhizal fertilizers on Stevia rebaudiana Bertoni, a factorial experiment was conducted in a completely randomized design with four replications in the research greenhouse of Agriculture College of Gonbad Kavous University in 2016-2017. The First factor was vermicompost at four levels (0, 10, 20 and 30 % of soil weight) and the second factor was inoculation with biological fertilizers at three levels (no inoculation (control) and inoculation with mycorrhizal fungi Glomus intraradieces and Glomus mosseae about 400 fungi spores per pot). The results showed that all cuttings were gradually eliminated in the treatments containing 30% vermicompost due to its high salinity, and had very low growth in treatments containing 20% vermicompost. The effect of vermicompost and mycorrhizal fungi on all traits studied, except the main effect of mycorrhizal fungi on the number of lateral branches and anthocyanins, were significant at 1% probability level. Also, their interaction was significant for all traits except stem dry weight. Based on the results, the highest positive effect was obtained in application of G. mosseae with 10% vermicompost for morphological traits such as plant height (126.63 cm) and root length (33.75 cm), and G. intraradieces with 10% vermicompost for flower (1.03 g) and root (9.93 g) dry weight and leaf area (78212 cm2) compared to no inoculation of mycorrhizal fungi at different levels of vermicompost. The highest content of chlorophylls a and b and total chlorophyll, and carotenoids (1.25‚ 1.58‚ 2.83 and 1.08 mg gr-1) was obtained in application of G. intraradieces with 10%vermicompost. The maximum content of soluble sugars (158.15 mg gr-1) was observed in 10%vermicompostwithout mycorrhizal inoculation treatment. According to the results of this study, the use of G. mosseae and G. intraradices fungi together with 10% vermicompost had the most positive effect on the quantitative and qualitative characteristics of Stevia rebaudiana.