tayebe rostami; Saeideh Maleki Farahani
Abstract
In order to investigate the effect of mycorrhiza and surfactant on forage characteristics of corn (Zea mays L.) under deficit irrigation condition, a split plot factorial experiment was conducted in a randomized complete block design with three replication at the Research Farm of Agricultural College, ...
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In order to investigate the effect of mycorrhiza and surfactant on forage characteristics of corn (Zea mays L.) under deficit irrigation condition, a split plot factorial experiment was conducted in a randomized complete block design with three replication at the Research Farm of Agricultural College, Shahed University, Iran in 2016. The experimental treatments included irrigation at three levels of 30, 60 and 90 percent available soil water depilation as a main factor and inoculation with mycorrhizal fungi (Glomus etunicatum, G. intraradices and G. mossea) at two levels (inoculation and no inoculation with mycorrhizal) and treatment of surfactant solution containing two levels (Application of surfactant and non-use of surfactant solution) as sub factors. Results showed that with increasing depletion of available soil water, application of mycorrhizal fungi increased crude protein percentage (CP), water soluble carbohydrate (WSC) and acid detergent fibre (ADF), increased by 39.24, 30.64 and 39 percent respectively. Application of surfactant on percentage NDF was not significant. As deficit irrigation stress increased, dry weight of forage decreased and highest dry weight of forage (400 gr/plant) was observed under normal irrigation conditions and application of surfactant and mycorrhiza. The results also showed that by increasing the amount of available water discharge, application of surfactant and inoculation with mycorrhizal fungi increased water use efficiency 97 percent in compare to control.
Azam Feli; Saeideh Maleki Farahani; Hossein Besharati
Abstract
In order to evaluate the effects of organic, chemical and biological fertilizers on plant and soil properties in saffron cultivation the experiment was performed as factorial with two factors based on a randomized complete block design with three replications in the research farm of Shahed University ...
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In order to evaluate the effects of organic, chemical and biological fertilizers on plant and soil properties in saffron cultivation the experiment was performed as factorial with two factors based on a randomized complete block design with three replications in the research farm of Shahed University during 2015-2016 growing seson. in this experiment the first factor was nitrogen fertilizer (urea) in three levels (0, 50 and 100 kg per ha) and second factor was different types of non-chemical fertilizers in four levels (control, vermicompost, PGPR biofertilizer containing bacteria Pseudomonas and Bacillus and integrated application of biofertilizer and vermicompost). The results showed that fertilizer treatments affect significantly on qualitative and quantitative properties of plant and soil. Among the fertilizer treatments, the integrated application of vermicompost alongwith 50 kg/ha chamical fertilizers showed the most significant increment in yields and improved soil properties. As in this treatment stigma dry yield, soil nitrogen content, soil organic mater and available soil phosphorus increase by 42.6, 66.67, 68.39, and 43.75% compared to control, respectively. Totally integrated application of vermicompost alongwith half of recommended urea fertilizer can increase yield and improve soil properties in saffron cultivation.
Arezou Paravar; Saeideh Maleki Farahani; Alireza Rezazadeh
Abstract
In order to effect controlled ageing on parameters germination, membrane peroxidation and antioxidant activity the stressed seeds of Balangu (Lallemantia sp), a four- factor factorial study in a completely randomized design with three replications was conducted in Laborartory Seed Science and Technology ...
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In order to effect controlled ageing on parameters germination, membrane peroxidation and antioxidant activity the stressed seeds of Balangu (Lallemantia sp), a four- factor factorial study in a completely randomized design with three replications was conducted in Laborartory Seed Science and Technology Shahed University in 2015. Dragons’ head (Lallemantia iberica) and Lady’s mantle (Lallemantia royleana) were imposed three drought stress level (control, mild and severe) during seed development and the produced seeds were aged at different seed moisture content (5, 15 and 25% for 24 and 48 hours duration). Analysis of variance showed that the interaction effect of species, moisture stress during seed development, duration of aging and seed moisture content on germination percentage, germination rate, mean germination time, membrane peroxidation and catalase activity was significant. It was observed increasing germination percentage and rate germination, mean germination time and catalase activity in the Lady’s mantle stressed seeds and reduced membrane peroxidation and increasing membrane peroxidation and reduced germination percentage and rate germination, mean germination and catalase activity in the Dragons’ head stressed seeds. Impressed Dragons’ head stressed seed from maternal by more aging were affected by negative effect of aging more than stressed seeds of Lady’s mantle from maternal.
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.
Saeideh Maleki Farahani; Daryoush Mazaheri; Mohammad Reza Chaeichi
Abstract
To evaluate the effects of fertilizing and deficit irrigation regimes on some chemical properties of soil and plant, an experiment was conducted during 2007 and 2008 growing seasons. Experimental design was a split plot based on a randomized complete block design with four replications. The treatments ...
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To evaluate the effects of fertilizing and deficit irrigation regimes on some chemical properties of soil and plant, an experiment was conducted during 2007 and 2008 growing seasons. Experimental design was a split plot based on a randomized complete block design with four replications. The treatments consisted of three deficit irrigation regimes (main plots) and six soil fertilizing systems (sub-plots). The irrigation treatments were included non-stressed, medium stress and severe stress. Fertilizing systems consisted of no fertilizing as control, phosphorous and nitrogen biofertilizers, 100% chemical fertilizer, vermicompost, 50% chemical fertilizer + 50% vermicompost, and 50% chemical fertilizer + biofertilizer as the sub plots. Integrated application of chemical and organic fertilizers increased soil P more than the other fertilizing systems. Integrated fertilizers increased plant N in compare with other fertilizing systems. Fertilizers containing vermicompost had more soil organic carbon, nitrogen and phosphorus or plant N and P under water stress rather than the others. Biofertilizer increased soil and plant P content under normal irrigation.