Asad Rokhzadi | Islamic Azad University Of Sanandaj (original) (raw)
Papers by Asad Rokhzadi
Journal of Soil Science and Plant Nutrition, Dec 7, 2023
The long-term and intensive use of synthetic fertilizers threatens the sustainability of agricult... more The long-term and intensive use of synthetic fertilizers threatens the sustainability of agricultural production. The present study aimed to explore the feasibility of reducing the use of chemical fertilizers in quinoa cultivation through combined application with organic fertilizers. A 2-year experiment was performed using the response surface methodology (RSM) technique based on a Box-Behnken design. Fertilization factors included inorganic NPK, vermicompost (VC), and cow manure (CM) each with three levels of 0, 50, and 100%. Increasing the NPK rate led to increased seed yield, decreased nitrogen use efficiency (NUE), and increased N loss. The CM application significantly improved seed yield, protein yield, and NUE, while reducing the N loss. Quinoa responded better to medium amounts of VC in the first year and maximum amounts in the second year. Optimization with an environmental-economic approach showed that by using 65–80% NPK, 100% CM, and 50–100% VC, quinoa seed yield reached the optimal limits, and a significant reduction in N loss was recorded. Based on the findings, an integrated use of CM and VC with reduced amounts of NPK can be considered a fertilization strategy in sustainable quinoa production.
Horticulturae, Jan 8, 2024
Australian Journal of Crop Science, 2011
This research was carried out to evaluate the effects of single and combined inoculation with pla... more This research was carried out to evaluate the effects of single and combined inoculation with plant growth-promoting rhizobacteria from four genera including Azospirillum, Azotobacter, Mesorhizobium and Pseudomonas on nutrient uptake, growth and yield of chickpea plants under field conditions. Nodulation and nutrient concentration in shoots were significantly affected by the treatments at the beginning of flowering stage. The maximum dry weight of root nodules was recorded by applying the combined inoculation with Azospirillum spp. + Azotobacter chroococcum 5 + Mesorhizobium ciceri SWRI7 + Pseudomonas fluorescens P21. All inoculants were statistically superior over uninoculated control with respect to nitrogen concentration of shoots. The treatments containing Azospirillum + Azotobacter significantly improved phosphorus concentration in shoots. Grain yield, biomass dry weight and nitrogen & phosphorus uptake of grains were statistically improved by applying every inoculation treatment in comparison with control plants. Group comparisons between treatments showed that the occurance of Azospirillum or Azotobacter inoculants in the treatment composition caused an expressive improvement in grain yield and plant biomass. In conclusion, application of every inoculation treatment studied here, especially treatments which contained Azospirillum or Azotobacter may stimulate growth and yield of chickpea as compared with uninoculated plants.
Bioscience biotechnology research communications, Sep 25, 2017
Sustainable agriculture is now considered as an important factor in the development of modern agr... more Sustainable agriculture is now considered as an important factor in the development of modern agriculture. Sustainable agriculture emphasizes the long-term yield stability with the least adverse impact on the environment. So tillage is a very important factor in agricultural economics. The aim of this study was to investigate the effect of tillage on chickpea yield in split strip plots based on a randomized complete block design with three replications in two growing years of 2014-2015 and 2015-2016 in Mahidasht located in Kermanshah. In this research, it was found that in the fi rst year, the results of analysis of variance showed that the effect of tillage was signifi cant only on grain yield at 5% level. However, the effect of tillage on moisture content was not signifi cant in the studied properties. In the second year of experiment, the tillage factor also had a signifi cant effect on grain yield, biological yield, and moisture content at the depth of 0-20 cm at 5% level, and it was signifi cant on moisture content at the depth of 20-40 cm at second phase at 1% level. Since the yield of the crop was lower in no tillage than in other cases, but the use of no tillage has caused that there is no place for agricultural equipment and machinery in the farm which caused density in soil. It should be noted that these machines and equipment are so expensive,this issue is very important in economic terms; therefore, the use of no tillage system is proposed.
Industrial Crops and Products, May 1, 2012
Cropping systems in farmland areas of Iran are characterized by continuous cultivation of crops w... more Cropping systems in farmland areas of Iran are characterized by continuous cultivation of crops with consumption of chemical fertilizers leading to serious soil erosion and fertility decline. Information regarding the simultaneous evaluation of crop rotation and fertilization on the canola is lacking. Hence, field experiments were conducted during 2007-2010 using split-split plot design. Three crop rotations: chickpea, sunflower, wheat, and canola (R1); green manure, chickpea, green manure, wheat, green manure and canola (R2); canola, wheat, and canola (R3) were used as main plots. Sub plots were consisted of six methods of fertilization including (N1): farmyard manure (FYM); (N2): compost; (N3): chemical fertilizers; (N4): FYM + compost and (N5): FYM + compost + chemical fertilizers; and control (N6). Four levels of biofertilizers consisted of (B1): phosphate solubilizing bacteria (PSB); (B2): Trichoderma harzianum; (B3): PSB + T. harzianum; and (B4): without biofertilizers were arranged in the sub-sub plots. Results showed that green manure application in canola rotation (R2) increased grain yield and nutrient uptake. Combined application of FYM, compost and chemical fertilizers (N5) elevated the nitrogen uptake rate and grain oil yield. Simultaneous use of PSB and T. harzianum (B3) resulted in the increase of nitrogen and sulfur contents of grain. R2 rotation with regard to its biological and environmental efficiencies accompanied with FYM + compost and B3 (PSB + T. harzianum) is suggested as a low input system to obtain a more sustainable and productive farming in canola.
crop physiology journal, Jul 10, 2019
Journal of clinical & cellular immunology, Nov 6, 2013
Genetika, 2018
Wild relatives of wheat are potential sources of valuable genetic materials for wheat improvement... more Wild relatives of wheat are potential sources of valuable genetic materials for wheat improvement. Knowledge of the genetic diversity of wild relative species of wheat is crucial for their conservation and utilization. The objective of the current study was to investigate the genetic diversity of inter and intra species of Triticum monococcum ssp. aegilopoides (AA), Aegilops tauschii (DD) and Aegilops cylindrica (CCDD) originating from northern and western Iran. Thirty microsatellite (SSR) markers belonging to A, B, C and D genomes were used for analysis and 20 found to be polymorphic within and between species. The SSR markers generated a total number of 180 alleles with an average of 9 alleles per locus in 21 genotypes. The genetic diversity for all loci ranged from 0.74-0.90 with an average of 0.83. The highest genetic diversity was estimated for Xgwm186 and Xgwm205 which the latter could amplify in the A, D and CD genomes of T. monococcum, Ae. tauschii and Ae. cylindrica, respectively. In addition, the number of bands generated by Xgwm205 along with other four markers in Ae. cylindrica (CD) was twofold than that of Ae. tauschii (D). Polymorphic information content ranged from 0.7-0.89 with an average of 0.82. The dendrogram obtained from the neighbor-joining method divided the genotypes of the three species into three distinctive groups. It can be concluded that SSR markers can be useful not only in differentiating wild species of wheat possessing A, D and C genomes, but also in assessing the genetic variation of genotypes within these species.
Archives of Agronomy and Soil Science, Dec 1, 2013
Journal of applied botany and food quality, Apr 28, 2014
Drought stress is a critical limiting factor in plant growth. Substances such as salicylic acid (... more Drought stress is a critical limiting factor in plant growth. Substances such as salicylic acid (SA) and ascorbic acid (AA) may enhance drought tolerance in plants. Therefore this experiment was aimed to study the growth and physiological response of two chickpea cultivars (ILC482 & Kurdistan) to SA and AA foliar application in four different conditions of drought stress including: control or well watered, vegetative drought stress, reproductive drought stress and complete drought stress (vegetative and reproductive drought stress). Results showed that plant biomass was significantly increased through SA and AA application. SA spraying in complete drought stress condition significantly increased the proline content of leaves. Foliar application of SA and AA both in well watered and water deficit treatments reduced the electrolyte leakage in leaves. Generally it was concluded that SA and AA have the potential of diminishing injurious effects of drought stress and promoting crop productivity.
crop physiology journal, Dec 10, 2014
Seven cultivars of strawberry (Paros, Ventana, Queen Elisa, Camarosa, Selva, Mrak and Kurdistan) ... more Seven cultivars of strawberry (Paros, Ventana, Queen Elisa, Camarosa, Selva, Mrak and Kurdistan) were evaluated under field conditions. Different growth and morphological parameters and plant yield were studied in this experiment. The greatest amount of plant yield was obtained from Queen Elisa cultivar and the lowest rate of plant yield was recorded by Selva cultivar. Plant yield was significantly correlated with flowers and fruits number, whereas the correlation between plant yield and fruit weight was low and not significant. Furthermore fruit weight was negatively correlated with flowers and fruits number indicating a reverse relationship between the number and the weight of fruits suggesting that strawberry plant yield is a function of fruits number rather than fruit size. In conclusion selection for high yielding strawberries based on high numbers of fruits and flowers can be more effective rather than fruit size or weight.
International journal of biosciences, Apr 22, 2013
This experiment was carried out in order to study the influence of some essential oils on post ha... more This experiment was carried out in order to study the influence of some essential oils on post harvest quality of grapevine (Vitis vinifera) cv. Rasha (Siah-e-Sardasht). The treatments included control (distilled water) and concentrations 250 and 500 ppm of basil (Ocimum basilicum), wild mint (Mentha longifolia) and ajowan (Carum copticum) essential oils at two periods of 30 and 60 days storage. Results showed that essential oils decreased the decay and weight loss percentage at both storage periods. In the final stage of experiment all essential oils improved total soluble solids (TSS), maturity index and vitamin C content, while decreased titratable acidity (TA) compared with control. Decay rate, vitamin C loss and weight loss were increased by increasing storage period, whereas the application of essential oils declined these traits. The concentrations of 500ppm of basil essential oil and 250ppm of ajowan essential oil were more effective on controlling decay and weight loss, respectively. Also, the highest contents of vitamin C were obtained by concentrations of 250 and 500ppm of basil essential oil at the first and the second periods of storage, respectively.
This trial was carried out to investigate the effect of combination silver nanoparticles (SNPs) a... more This trial was carried out to investigate the effect of combination silver nanoparticles (SNPs) and inorganic selenium (ISe) on performance traits, digestive and visceral organs of broilers during starter stage (from 1 to 21 days of broiler ages). A total of 300 one-day male broiler (Ross-308) were distributed in five groups 75 birds with four times any treatment and 15 birds in each pen. Experimental diets were: T1-control (basal diet); T2-25 mg SNPs+ 0.2 mg ISe; T3-25 mg SNPs+ 0.4 mg ISe; T4-50 mg SNPs + 0.2 mg ISe and T5-50 mg SNPs + 0.4 mg ISe. Birds accessed to feed and water throughout study. Results indicated the combination of SNPs and ISe had not significantly effected on performance traits such as live body weight (P>0.05), feed intake (P>0.05) and feed conversion rate (G/F) (P>0.05) compared with control. As well as the highest body weight observed in T1 birds (control group) at the end of study (21 d). Relative weight of liver and small intestine were higher (P<0.05) in birds fed diet inclusion of SNPs and ISe than control. In conclusion, finding current research suggested that none of combination levels of SNPs and ISe not only no improve growth performance but also may be to have some negative effects on the overall health of broiler chickens.
Safflower (Carthamus tinctorius L.) response to foliar spraying of methanol in well-watered and w... more Safflower (Carthamus tinctorius L.) response to foliar spraying of methanol in well-watered and water deficit stress conditions was studied in a split plot experiment with randomized complete block design. Two treatments of full irrigation (control) and interrupted irrigation at flowering stage were compared in main plots and four levels of methanol [0, 10, 20 and 30% (v/v)] in subplots. Results indicated that interrupted irrigation at flowering stage significantly decreased plant height, leaf chlorophyll, seeds number and weight as compared with the control. Interaction effect of irrigation and methanol showed that the highest rate of seed yield under well-watered conditions was obtained at 10% methanol; higher doses of methanol decreased seed yield. Under water stress conditions at flowering stage, seed yield was significantly increased with increasing the methanol dose to 30%, in comparison with 0% methanol or control treatment. This experiment showed that foliar application of methanol in higher doses under drought stress conditions at flowering stage may increase growth and yield of safflower, whereas under fully watered conditions the application of lower doses of methanol may be more effective in yield improvement than use of higher doses.
Legume Research, 2015
Drought is one of the main constraints restricting the growth and yield of crop plants. It is sug... more Drought is one of the main constraints restricting the growth and yield of crop plants. It is suggested that antioxidants, like salicylic acid (SA) and ascorbic acid (AA), may enhance drought tolerance in plants. Results showed that seed yield, plant biomass, plant height and water use efficiency were decreased whereas protein content and soluble carbohydrates were increased as the result of complete drought stress. The maximum plant height and the highest protein content of the chickpea belonged to ILC482 and Kurdistan cultivars respectively. The plant biomass was increased by application of salicylic and ascorbic acids as compared with control plants significantly. The results showed that ascorbic acid application increased rate of biological water use efficiency significantly as compared with control plants. Application of salicylic acid led to significant increase in protein content of leaves in complete drought stress condition. Application of ascorbic acid at non-stress (control) condition resulted in the highest rate of economical water use efficiency.
Journal of clinical & cellular immunology, Nov 6, 2013
JOURNAL OF PLANT ENVIRONMENTAL PHYSIOLOGY, 2018
LEGUME RESEARCH - AN INTERNATIONAL JOURNAL, 2021
Background: The major part of the edible oil used in Iran is supplied through imports. It is impo... more Background: The major part of the edible oil used in Iran is supplied through imports. It is important to increase the yield of oilseed crops, especially soybeans, in non-chemical and environmentally friendly ways, along with its easy availability and low cost. The use of magnetic water as a new method, increases the yield of plants by improving solubility and access the nutrients. On the other hand, in recent years, methanol spraying as a source of carbon dioxide, which increases the concentration of this gas around the plant, enhancing the photosynthesis and plant yield. This study was conducted to study the efficacy of different intensities of magnetic water and various concentrations of methanol foliar application on agronomic traits of soybean. Methods: This experiment was carried out as split plot in a randomized complete block design with 3 replications during two consecutive years 2016-17. The main plot was irrigated with magnetic water in 4 intensity (0: control, 4, 8, 12mT...
نخود (Cicer arietinum L.)، در ایران غالبا در شرایط دیم بهاره و در مزارعی که رطوبت را از فصل قبل د... more نخود (Cicer arietinum L.)، در ایران غالبا در شرایط دیم بهاره و در مزارعی که رطوبت را از فصل قبل در خود ذخیره کردهاند کشت میشود. تراکم بوته میتواند اثر مهمی بر تولید و عملکرد نخود داشته باشد. هدف از انجام این پژوهش، بررسی اثرات تراکمهای مختلف بوته بر عملکرد دانه و تعدادی از صفات زراعی برخی ارقام نخود در سال 1395در ایستگاه تحقیقات کشاورزی گریزه سنندج (35 درجه و 16 دقیقه عرض شمالی و 47 درجه و 1 دقیقه طول شرقی) بود. آزمایش بهصورت فاکتوریل درقالب طرح بلوکهای کامل تصادفی با سه تکرار اجراء و عوامل آزمایشی تراکم بوته در چهار سطح 15، 25، 35 و 45 بوته در مترمربع و ارقام نخود شامل چهار رقم کاکا، پیروز، آیالسی 482 و ثمین در نظر گرفته شدند. تجزیه واریانس صفات یادداشت برداری شده نشان داد که اثر رقم و اثر متقابل رقم در تراکم برای همه منابع تغییر به استثنای تعداد دانه در غلاف، ارتفاع بوته و ارتفاع اولین غلاف از سطح زمین معنیدار بود. همچنین، اثر عامل تراکم بوته بر عملکرد دانه، وزن 100 دانه، شاخص کلروفیل برگ، محتوای پروتئین، ارتفاع بوته و تعداد شاخه در بوته معنیدار بهدست آمد. نتایج نشا...
Journal of Soil Science and Plant Nutrition, Dec 7, 2023
The long-term and intensive use of synthetic fertilizers threatens the sustainability of agricult... more The long-term and intensive use of synthetic fertilizers threatens the sustainability of agricultural production. The present study aimed to explore the feasibility of reducing the use of chemical fertilizers in quinoa cultivation through combined application with organic fertilizers. A 2-year experiment was performed using the response surface methodology (RSM) technique based on a Box-Behnken design. Fertilization factors included inorganic NPK, vermicompost (VC), and cow manure (CM) each with three levels of 0, 50, and 100%. Increasing the NPK rate led to increased seed yield, decreased nitrogen use efficiency (NUE), and increased N loss. The CM application significantly improved seed yield, protein yield, and NUE, while reducing the N loss. Quinoa responded better to medium amounts of VC in the first year and maximum amounts in the second year. Optimization with an environmental-economic approach showed that by using 65–80% NPK, 100% CM, and 50–100% VC, quinoa seed yield reached the optimal limits, and a significant reduction in N loss was recorded. Based on the findings, an integrated use of CM and VC with reduced amounts of NPK can be considered a fertilization strategy in sustainable quinoa production.
Horticulturae, Jan 8, 2024
Australian Journal of Crop Science, 2011
This research was carried out to evaluate the effects of single and combined inoculation with pla... more This research was carried out to evaluate the effects of single and combined inoculation with plant growth-promoting rhizobacteria from four genera including Azospirillum, Azotobacter, Mesorhizobium and Pseudomonas on nutrient uptake, growth and yield of chickpea plants under field conditions. Nodulation and nutrient concentration in shoots were significantly affected by the treatments at the beginning of flowering stage. The maximum dry weight of root nodules was recorded by applying the combined inoculation with Azospirillum spp. + Azotobacter chroococcum 5 + Mesorhizobium ciceri SWRI7 + Pseudomonas fluorescens P21. All inoculants were statistically superior over uninoculated control with respect to nitrogen concentration of shoots. The treatments containing Azospirillum + Azotobacter significantly improved phosphorus concentration in shoots. Grain yield, biomass dry weight and nitrogen & phosphorus uptake of grains were statistically improved by applying every inoculation treatment in comparison with control plants. Group comparisons between treatments showed that the occurance of Azospirillum or Azotobacter inoculants in the treatment composition caused an expressive improvement in grain yield and plant biomass. In conclusion, application of every inoculation treatment studied here, especially treatments which contained Azospirillum or Azotobacter may stimulate growth and yield of chickpea as compared with uninoculated plants.
Bioscience biotechnology research communications, Sep 25, 2017
Sustainable agriculture is now considered as an important factor in the development of modern agr... more Sustainable agriculture is now considered as an important factor in the development of modern agriculture. Sustainable agriculture emphasizes the long-term yield stability with the least adverse impact on the environment. So tillage is a very important factor in agricultural economics. The aim of this study was to investigate the effect of tillage on chickpea yield in split strip plots based on a randomized complete block design with three replications in two growing years of 2014-2015 and 2015-2016 in Mahidasht located in Kermanshah. In this research, it was found that in the fi rst year, the results of analysis of variance showed that the effect of tillage was signifi cant only on grain yield at 5% level. However, the effect of tillage on moisture content was not signifi cant in the studied properties. In the second year of experiment, the tillage factor also had a signifi cant effect on grain yield, biological yield, and moisture content at the depth of 0-20 cm at 5% level, and it was signifi cant on moisture content at the depth of 20-40 cm at second phase at 1% level. Since the yield of the crop was lower in no tillage than in other cases, but the use of no tillage has caused that there is no place for agricultural equipment and machinery in the farm which caused density in soil. It should be noted that these machines and equipment are so expensive,this issue is very important in economic terms; therefore, the use of no tillage system is proposed.
Industrial Crops and Products, May 1, 2012
Cropping systems in farmland areas of Iran are characterized by continuous cultivation of crops w... more Cropping systems in farmland areas of Iran are characterized by continuous cultivation of crops with consumption of chemical fertilizers leading to serious soil erosion and fertility decline. Information regarding the simultaneous evaluation of crop rotation and fertilization on the canola is lacking. Hence, field experiments were conducted during 2007-2010 using split-split plot design. Three crop rotations: chickpea, sunflower, wheat, and canola (R1); green manure, chickpea, green manure, wheat, green manure and canola (R2); canola, wheat, and canola (R3) were used as main plots. Sub plots were consisted of six methods of fertilization including (N1): farmyard manure (FYM); (N2): compost; (N3): chemical fertilizers; (N4): FYM + compost and (N5): FYM + compost + chemical fertilizers; and control (N6). Four levels of biofertilizers consisted of (B1): phosphate solubilizing bacteria (PSB); (B2): Trichoderma harzianum; (B3): PSB + T. harzianum; and (B4): without biofertilizers were arranged in the sub-sub plots. Results showed that green manure application in canola rotation (R2) increased grain yield and nutrient uptake. Combined application of FYM, compost and chemical fertilizers (N5) elevated the nitrogen uptake rate and grain oil yield. Simultaneous use of PSB and T. harzianum (B3) resulted in the increase of nitrogen and sulfur contents of grain. R2 rotation with regard to its biological and environmental efficiencies accompanied with FYM + compost and B3 (PSB + T. harzianum) is suggested as a low input system to obtain a more sustainable and productive farming in canola.
crop physiology journal, Jul 10, 2019
Journal of clinical & cellular immunology, Nov 6, 2013
Genetika, 2018
Wild relatives of wheat are potential sources of valuable genetic materials for wheat improvement... more Wild relatives of wheat are potential sources of valuable genetic materials for wheat improvement. Knowledge of the genetic diversity of wild relative species of wheat is crucial for their conservation and utilization. The objective of the current study was to investigate the genetic diversity of inter and intra species of Triticum monococcum ssp. aegilopoides (AA), Aegilops tauschii (DD) and Aegilops cylindrica (CCDD) originating from northern and western Iran. Thirty microsatellite (SSR) markers belonging to A, B, C and D genomes were used for analysis and 20 found to be polymorphic within and between species. The SSR markers generated a total number of 180 alleles with an average of 9 alleles per locus in 21 genotypes. The genetic diversity for all loci ranged from 0.74-0.90 with an average of 0.83. The highest genetic diversity was estimated for Xgwm186 and Xgwm205 which the latter could amplify in the A, D and CD genomes of T. monococcum, Ae. tauschii and Ae. cylindrica, respectively. In addition, the number of bands generated by Xgwm205 along with other four markers in Ae. cylindrica (CD) was twofold than that of Ae. tauschii (D). Polymorphic information content ranged from 0.7-0.89 with an average of 0.82. The dendrogram obtained from the neighbor-joining method divided the genotypes of the three species into three distinctive groups. It can be concluded that SSR markers can be useful not only in differentiating wild species of wheat possessing A, D and C genomes, but also in assessing the genetic variation of genotypes within these species.
Archives of Agronomy and Soil Science, Dec 1, 2013
Journal of applied botany and food quality, Apr 28, 2014
Drought stress is a critical limiting factor in plant growth. Substances such as salicylic acid (... more Drought stress is a critical limiting factor in plant growth. Substances such as salicylic acid (SA) and ascorbic acid (AA) may enhance drought tolerance in plants. Therefore this experiment was aimed to study the growth and physiological response of two chickpea cultivars (ILC482 & Kurdistan) to SA and AA foliar application in four different conditions of drought stress including: control or well watered, vegetative drought stress, reproductive drought stress and complete drought stress (vegetative and reproductive drought stress). Results showed that plant biomass was significantly increased through SA and AA application. SA spraying in complete drought stress condition significantly increased the proline content of leaves. Foliar application of SA and AA both in well watered and water deficit treatments reduced the electrolyte leakage in leaves. Generally it was concluded that SA and AA have the potential of diminishing injurious effects of drought stress and promoting crop productivity.
crop physiology journal, Dec 10, 2014
Seven cultivars of strawberry (Paros, Ventana, Queen Elisa, Camarosa, Selva, Mrak and Kurdistan) ... more Seven cultivars of strawberry (Paros, Ventana, Queen Elisa, Camarosa, Selva, Mrak and Kurdistan) were evaluated under field conditions. Different growth and morphological parameters and plant yield were studied in this experiment. The greatest amount of plant yield was obtained from Queen Elisa cultivar and the lowest rate of plant yield was recorded by Selva cultivar. Plant yield was significantly correlated with flowers and fruits number, whereas the correlation between plant yield and fruit weight was low and not significant. Furthermore fruit weight was negatively correlated with flowers and fruits number indicating a reverse relationship between the number and the weight of fruits suggesting that strawberry plant yield is a function of fruits number rather than fruit size. In conclusion selection for high yielding strawberries based on high numbers of fruits and flowers can be more effective rather than fruit size or weight.
International journal of biosciences, Apr 22, 2013
This experiment was carried out in order to study the influence of some essential oils on post ha... more This experiment was carried out in order to study the influence of some essential oils on post harvest quality of grapevine (Vitis vinifera) cv. Rasha (Siah-e-Sardasht). The treatments included control (distilled water) and concentrations 250 and 500 ppm of basil (Ocimum basilicum), wild mint (Mentha longifolia) and ajowan (Carum copticum) essential oils at two periods of 30 and 60 days storage. Results showed that essential oils decreased the decay and weight loss percentage at both storage periods. In the final stage of experiment all essential oils improved total soluble solids (TSS), maturity index and vitamin C content, while decreased titratable acidity (TA) compared with control. Decay rate, vitamin C loss and weight loss were increased by increasing storage period, whereas the application of essential oils declined these traits. The concentrations of 500ppm of basil essential oil and 250ppm of ajowan essential oil were more effective on controlling decay and weight loss, respectively. Also, the highest contents of vitamin C were obtained by concentrations of 250 and 500ppm of basil essential oil at the first and the second periods of storage, respectively.
This trial was carried out to investigate the effect of combination silver nanoparticles (SNPs) a... more This trial was carried out to investigate the effect of combination silver nanoparticles (SNPs) and inorganic selenium (ISe) on performance traits, digestive and visceral organs of broilers during starter stage (from 1 to 21 days of broiler ages). A total of 300 one-day male broiler (Ross-308) were distributed in five groups 75 birds with four times any treatment and 15 birds in each pen. Experimental diets were: T1-control (basal diet); T2-25 mg SNPs+ 0.2 mg ISe; T3-25 mg SNPs+ 0.4 mg ISe; T4-50 mg SNPs + 0.2 mg ISe and T5-50 mg SNPs + 0.4 mg ISe. Birds accessed to feed and water throughout study. Results indicated the combination of SNPs and ISe had not significantly effected on performance traits such as live body weight (P>0.05), feed intake (P>0.05) and feed conversion rate (G/F) (P>0.05) compared with control. As well as the highest body weight observed in T1 birds (control group) at the end of study (21 d). Relative weight of liver and small intestine were higher (P<0.05) in birds fed diet inclusion of SNPs and ISe than control. In conclusion, finding current research suggested that none of combination levels of SNPs and ISe not only no improve growth performance but also may be to have some negative effects on the overall health of broiler chickens.
Safflower (Carthamus tinctorius L.) response to foliar spraying of methanol in well-watered and w... more Safflower (Carthamus tinctorius L.) response to foliar spraying of methanol in well-watered and water deficit stress conditions was studied in a split plot experiment with randomized complete block design. Two treatments of full irrigation (control) and interrupted irrigation at flowering stage were compared in main plots and four levels of methanol [0, 10, 20 and 30% (v/v)] in subplots. Results indicated that interrupted irrigation at flowering stage significantly decreased plant height, leaf chlorophyll, seeds number and weight as compared with the control. Interaction effect of irrigation and methanol showed that the highest rate of seed yield under well-watered conditions was obtained at 10% methanol; higher doses of methanol decreased seed yield. Under water stress conditions at flowering stage, seed yield was significantly increased with increasing the methanol dose to 30%, in comparison with 0% methanol or control treatment. This experiment showed that foliar application of methanol in higher doses under drought stress conditions at flowering stage may increase growth and yield of safflower, whereas under fully watered conditions the application of lower doses of methanol may be more effective in yield improvement than use of higher doses.
Legume Research, 2015
Drought is one of the main constraints restricting the growth and yield of crop plants. It is sug... more Drought is one of the main constraints restricting the growth and yield of crop plants. It is suggested that antioxidants, like salicylic acid (SA) and ascorbic acid (AA), may enhance drought tolerance in plants. Results showed that seed yield, plant biomass, plant height and water use efficiency were decreased whereas protein content and soluble carbohydrates were increased as the result of complete drought stress. The maximum plant height and the highest protein content of the chickpea belonged to ILC482 and Kurdistan cultivars respectively. The plant biomass was increased by application of salicylic and ascorbic acids as compared with control plants significantly. The results showed that ascorbic acid application increased rate of biological water use efficiency significantly as compared with control plants. Application of salicylic acid led to significant increase in protein content of leaves in complete drought stress condition. Application of ascorbic acid at non-stress (control) condition resulted in the highest rate of economical water use efficiency.
Journal of clinical & cellular immunology, Nov 6, 2013
JOURNAL OF PLANT ENVIRONMENTAL PHYSIOLOGY, 2018
LEGUME RESEARCH - AN INTERNATIONAL JOURNAL, 2021
Background: The major part of the edible oil used in Iran is supplied through imports. It is impo... more Background: The major part of the edible oil used in Iran is supplied through imports. It is important to increase the yield of oilseed crops, especially soybeans, in non-chemical and environmentally friendly ways, along with its easy availability and low cost. The use of magnetic water as a new method, increases the yield of plants by improving solubility and access the nutrients. On the other hand, in recent years, methanol spraying as a source of carbon dioxide, which increases the concentration of this gas around the plant, enhancing the photosynthesis and plant yield. This study was conducted to study the efficacy of different intensities of magnetic water and various concentrations of methanol foliar application on agronomic traits of soybean. Methods: This experiment was carried out as split plot in a randomized complete block design with 3 replications during two consecutive years 2016-17. The main plot was irrigated with magnetic water in 4 intensity (0: control, 4, 8, 12mT...
نخود (Cicer arietinum L.)، در ایران غالبا در شرایط دیم بهاره و در مزارعی که رطوبت را از فصل قبل د... more نخود (Cicer arietinum L.)، در ایران غالبا در شرایط دیم بهاره و در مزارعی که رطوبت را از فصل قبل در خود ذخیره کردهاند کشت میشود. تراکم بوته میتواند اثر مهمی بر تولید و عملکرد نخود داشته باشد. هدف از انجام این پژوهش، بررسی اثرات تراکمهای مختلف بوته بر عملکرد دانه و تعدادی از صفات زراعی برخی ارقام نخود در سال 1395در ایستگاه تحقیقات کشاورزی گریزه سنندج (35 درجه و 16 دقیقه عرض شمالی و 47 درجه و 1 دقیقه طول شرقی) بود. آزمایش بهصورت فاکتوریل درقالب طرح بلوکهای کامل تصادفی با سه تکرار اجراء و عوامل آزمایشی تراکم بوته در چهار سطح 15، 25، 35 و 45 بوته در مترمربع و ارقام نخود شامل چهار رقم کاکا، پیروز، آیالسی 482 و ثمین در نظر گرفته شدند. تجزیه واریانس صفات یادداشت برداری شده نشان داد که اثر رقم و اثر متقابل رقم در تراکم برای همه منابع تغییر به استثنای تعداد دانه در غلاف، ارتفاع بوته و ارتفاع اولین غلاف از سطح زمین معنیدار بود. همچنین، اثر عامل تراکم بوته بر عملکرد دانه، وزن 100 دانه، شاخص کلروفیل برگ، محتوای پروتئین، ارتفاع بوته و تعداد شاخه در بوته معنیدار بهدست آمد. نتایج نشا...