S.A.R. Valadabadi; H. Aliabadi Farahani; P. Moaveni
Abstract
In order to evaluate the beneficial impacts of nitrogen application on cumin species (Cuminum cyminum L.) some yield characters were investigated. The aim of this study were to investigate the interactive effects of different cumin spices and nitrogen application on essential oil content at Qazvin zone ...
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In order to evaluate the beneficial impacts of nitrogen application on cumin species (Cuminum cyminum L.) some yield characters were investigated. The aim of this study were to investigate the interactive effects of different cumin spices and nitrogen application on essential oil content at Qazvin zone (Ishmael Abad station). The experimental design was split plot method based on randomized complete block with four replicates. Certain factors including cumin species (Sabzevar, Bojnourd and Esfarayen localities) and nitrogen application (30, 60, 90 and 120 kg N ha-1) were studied. Our final statistical analysis were indicated that cumin species had significant effect on plant values and highest essential oil yield, essential oil percentage, seed yield, thousand seed weight and harvest index were provided by species of Esfarayen locality and highest biological yield were provided by species of Bojnourd locality. Nitrogen treatment significantly increased plant values and although the highest biological yield, seed yield and thousand seed weight were obtained under 120 kg N ha-1 the highest essential oil yield, essential oil percentage and harvest index were achieved under 90, 60 and 30 kg N ha-1,respectively. The results of this study showed that the selection of species which performed well over a wide range of environment could increase quantity and quality yields of medicinal and aromatic plants and causes optimal usage in agricultural fertilizers.
E. Morteza; G.A. Akbari; S.A.M. Modares Sanavi; H. Aliabadi Farahani; B. Foghi; M. Abdoli
Abstract
In order to investigate the effects of sowing date and planting density on some of the growth characteristics of Valerian (Valeriana officinalis L.) and didrovaltrate content, an experiment was conducted from 2005-2006 at Experimental Farm in Abureyhan Campus, University of Tehran. The experiment performed ...
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In order to investigate the effects of sowing date and planting density on some of the growth characteristics of Valerian (Valeriana officinalis L.) and didrovaltrate content, an experiment was conducted from 2005-2006 at Experimental Farm in Abureyhan Campus, University of Tehran. The experiment performed in split plot form based on a complete randomized block design with four replications. The main factor was the sowing date with three levels (11 August, 1 and 22 September) and sub factor was plant density with three levels (40000, 80000 and 120000 plants/ hectare). Seeds of valerian provided from Medicinal Plants Research Division of Shahid Beheshti University. Didrovaltrate amount was measured by High Performance Liquid Chromatography (HPLC). The results showed that sowing date and planting density had significant effect on root and rhizome length and diameter and percentage of didrovaltrate. The interaction effects of sowing date and planting density had significant difference on percentage of didrovaltrate, but no significant effect on other characters was seen. The highest root and rhizome length was obtained from sowing date of 11th August and 120000 plants per hectare and the highest diameter of root and rhizome were obtained from the combination of 11th August and 40000 plants per hectare. The results showed that maximum amount of didrovaltrate was obtained from the combination of 22nd September and 40000 plants per hectare.
S.A.R. Valadabadi; M.H. Lebaschi; H. Aliabadi Farahani
Abstract
Growth indices are useful for interpreting plant reaction to environmental factors. In order to study the effects of arbuscular mycorrhizal fungi (AMF), P2O5 fertilizer and irrigation according to physiological growth indices of coriander, this experiment was conducted at Iran Research Institute of Forest ...
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Growth indices are useful for interpreting plant reaction to environmental factors. In order to study the effects of arbuscular mycorrhizal fungi (AMF), P2O5 fertilizer and irrigation according to physiological growth indices of coriander, this experiment was conducted at Iran Research Institute of Forest and Rangelands in 2006. Field experiment was carried out in split factorial based randomized complete block design with 4 replications. The factors studied included application and non-application of mycorrhiza (Glomus hoi), 0, 16 and 32 kg/ha P2O5 fertilizer (triple super phosphate) and two levels of irrigation, irrigation after 30 mm water evaporation from evaporation pan (without drought stress conditions) and irrigation after 60 mm water evaporation (drought stress conditions). The results of 7 sample stages showed that applications of mycorrhiza and 70 kg/ha phosphorus without drought stress conditions increased dry matter, leaf area index, relative growth rate, net assimilation rate and crop growth rate and these characteristics decreased under drought stress conditions sorely. The results showed that mycorrhiza fungi could increase absorb of phosphorus by symbiosis between fungi and coriander root. This condition can reduce application of phosphorus fertilizers in fields, without reducing of yield and quality yield.
E. Morteza; GH.A. Akbari; S.A.M Modares Sanavi; B. Foghi; M. Abdoli; H. Aliabadi Farahani
Abstract
In order to investigate the effect of sowing date and planting density on the essential oil content and compositionof valerian, this experiment was conducted in the years of 2005-2006 at Experimental Farm in Abureyhan Campus, University of Tehran. This experiment performed in split plot form based on ...
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In order to investigate the effect of sowing date and planting density on the essential oil content and compositionof valerian, this experiment was conducted in the years of 2005-2006 at Experimental Farm in Abureyhan Campus, University of Tehran. This experiment performed in split plot form based on a complete randomized block design with four replications. The main factor was the sowing date with three levels (11th August, 1st and 22nd September), sub factor was the density with three levels (40000, 80000 and 120000 plants/ hectare). Seeds of valerian providedbyresearch departmenton medicinal plants in University of Shahid Beheshti. After isolating essential oil from dried roots by the hydrodistillation method, composition of essential oil were identified by gas chromatography (GC) and GC/Mass spectrometry analysis. Number of 87 composition were identified in essential oil. Bornyl acetate, valerenal, camphene and valeranone were the highest percentage in other compositions of essential oil. According to the results, sowing date and planting density had significant effect on essential oil percentage and its composition (bornyl acetate, valerenal, camphene and valeranone) (P≤0.01). Interaction of sowing date and planting density had significant effect only on essential oil percentage (P≤0.05). Final results showed that the highest amount of essential oil percentage and its composition (bornyl acetate, valerenal, camphene, and valeranone) was obtained on 22nd September and 40000 plants per hectare.
H. Aliabadi Farahani; A. Arbab; B. Abbaszadeh
Volume 24, Issue 1 , May 2008, , Pages 18-30
Abstract
In order to study the effects of super phosphate triple, water deficit stress and Glomus hoi biological fertilizer on some quantity and quality characteristics of Coriander, this experiment was conducted at Iran Research Institute of Forest and Rangelands in 2006. Field experiment was carried out by ...
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In order to study the effects of super phosphate triple, water deficit stress and Glomus hoi biological fertilizer on some quantity and quality characteristics of Coriander, this experiment was conducted at Iran Research Institute of Forest and Rangelands in 2006. Field experiment was carried out by a split factorial design with 4 replications. The factors which studied were 0, 16 and 32 kg ha-1 P2O5 (super phosphate triple) and two levels irrigation, irrigation after 30 mm water evaporation from evaporation pan (without stress conditions), irrigation after 60 mm water evaporation (drought stress conditions) and application and non-application of mycorrhiza (Glomus hoi). The results showed that drought stress has significant effect on biological yield, flowering shoot yield and essential oil yield of flowering shoot, root yield, root length, root diameter, essential oil percentage of flowering shoot (α=1%). Highest biological yield, flowering shoot yield, essential oil yield of flowering shoot, root yield and root diameter were achieved without stress conditions and highest essential oil percent of flowering shoot and root length were achieved under stress conditions. Also phosphorus significant effects on biological yield, flowering shoot yield, essential oil yield of flowering shoot, root yield, essential oil percentage of flowering shoot and root length (α=1%) and root diameter were not significantly affected due to phosphorus. Comparison of means showed that highest biological yield, flowering shoot yield, essential oil yield of flowering shoot, root yield and root length were determined under application of 70 kg ha-1 phosphorus and highest essential oil percentage of flowering shoot were achieved under application of 35 kg ha-1 phosphorus. Mycorrhiza significant effect on biological yield, flowering shoot yield, essential oil yield of flowering shoot, root yield (α=1%) and root length (α=5%) and root diameter and essential oil percent of flowering shoot were not significant. Highest biological yield, flowering shoot yield and essential oil yield of flowering shoot, root yield and root length were achieved under application of mycorrhiza. The result showed that quantity and quality characteristics of Coriander increased by mycorrhiza and decreased application of phosphorus.