محمد میرزاخانی

Alfalfa is one of the most important fodder plants, being able to produce a high quantity of forage dry mass with high concentration of protein and to symbiotically fix atmospheric nitrogen. Having a deep and extensive root system, it reduces soil erosion and improves water penetration in agricultural soils (11). The results of the previous researches showed that the use of Nitroxin and Phosphate Barvar-2 bi-fertilizers had a significant effect on plant protein concentration and the highest protein (22.3%) was obtained when the plants were inoculated with Phosphate Barvar-2 and received organic amendment in the form of mushroom compost. Also, the use of Nitroxin and Barvar-2 bi-fertilizer increased the efficiency of nitrogen consumption, and inoculation with Nitroxin had the highest (22.8%) nitrogen use efficiency (5). Our study aimed to shed light on the nitrogen physiological efficiency and some agronomic traits of alfalfa in the presence of bio-fertilizers and organic manures in Kashan, central Iran.

This study was carried out in Aran and Bidgol, central Iran, in 2014. The experiment was conducted with a factorial arrangement in a randomized complete block design with three replications. Treatments were 4 levels of bio-fertilizers (control, Nitroxin, Phosphate Barvar-2, and Nitroxin+Phosphat Barvar-2) and animal manures (control, cattle manure, sheep manure, and poultry manure in 10 tons/ha). Stems/m2, grains/m2, 1000-grains weight, days to 10 percent flowering, accumulative fresh weight, nitrogen content, protein content, protein yield, physiological efficiency of nitrogen and nitrogen use efficiency were evaluated.

Application of bio-fertilizers enhanced all examined attributes, compared to control, the extent of enhancement in a majority of attributes being greater for Nitroxin + Phosphate Barvar-2. The highest and lowest grains/m2 and 1000-grains weight belonged to application of Nitroxin+ Phosphate Barvar-2 + 10 tons/ha cattle manure and control treatments, respectively. The highest nitrogen content, protein content, and protein yield were obtained by the application of Nitroxin and poultry manures. The highest physiological efficiency of nitrogen was recorded under the conditions of control and cattle manure (3.19 Kg/Kg). The highest nitrogen use efficiency was observed in the presence of cattle manure and Nitroxin+ Phosphate Barvar-2. The application of Nitroxin + Phosphate Barvar-2 with an average of 68.4 tons/ha led to 15.63% increase compared to other levels of bio-fertilizer. Therefore, the combined application of Nitroxin and Phosphate Barvar-2 has been able to produce a high-quality animal feed in successive harvests than the sole application of each of these bio-fertilizers. Among the different levels of organic fertilizers, application of cow manure with an average of 67.08 tons/ha and no use of organic fertilizer with an average of 62.37 tons/ha produced the highest and lowest cumulative fresh weight of alfalfa, respectively. Also, the highest physiological efficiency of nitrogen (with an average of 3.40 kg of grains produced per kg of nitrogen applied) was achieved when 10 tons/ha of cow manure was applied.

The combined application of Nitroxin and Phosphat Barvar-2 bio-fertilizers was more effective than the sole application of each of these biofertilizers. Among the levels of organic manure (10 tons per hectare), cow manure was found to be more effective in enhancing the examined traits. Application of poultry manure had a more favorable effect on nitrogen and protein concentrations and protein yield of alfalfa. Therefore, combined application of Nitroxin and Phosphat Barvar-2 bio-fertilizers is recommended for producing alfalfa in the climatic conditions of Kashan.

This experiment was conducted with the aim of investigating the effects of combined use of organic and biological fertilizers on protein percentage and apparent nitrogen recovery in white beans.

An experiment was conducted as a factorial arrangement of treatment in a randomized complete block design with three replications was used. The first factor included four levels (Control, Inoculation with Azotobacter, Inoculation with Barvar-2 and Inoculation with Azotobacter + Barvar-2) and second factor included four levels (Control, Farmyard manure, Mushroom compost and vermicompost).

The results showed that the highest biological performance was related to Nitroxin without using organic fertilizer and the lowest was related to control. The highest percentage of protein was related to fertilizer 2 + mushroom compost. The lowest percentage of protein belonged to the treatment of not using biological fertilizer and using animal manure. The maximum and minimum of nitrogen consumption efficiency were related to control treatment + animal manure with an average of 36.32 and control treatment + control, respectively. The highest value of apparent nitrogen recovery attribute was related to nitroxin + vermicompost treatment and the lowest value of this attribute was related to control + control.

The application of biological fertilizer and organic fertilizer led to a significant increase in the evaluated traits. Therefore, due to the high costs of preparation and consumption of chemical fertilizers, high wastage and leaching, as well as the harmful environmental effects of these fertilizers,

The use of biological and organic fertilizers as alternatives to chemical fertilizers increases the efficiency of the cycle of food elements, improves and stabilizes the quantitative and qualitative grain yield by maintaining the appropriate productivity of soil and water resources in sustainable agriculture. This experiment was conducted to determine the effects of combined application of organic and biological fertilizers on nitrogen agronomy efficiency and phosphorus content of white bean (Phaseolus vulgaris L.) in 2015. The study was conducted as a factorial experiment arranged in a randomized complete blocks design with three replications. Treatments included four organic fertilizers (control, farmyard manure, mushroom compost, and vermicompost) and four biofertilizers (control, inoculation with azotobacter, barvar2, and azotobacter+ barvar-2). Application of nitroxin biofertilizer had the highest effect on all traits. The highest protein yield (2779 kg ha-1) related to nitroxin biofertilizer treatment + organic control and the lowest one (950 kg ha-1) was obtained when no organic and biofertilizers were applied. The highest and the lowest of phosphorus content (2.34% and 1.03%) belonged to nitroxine + mushroom compost and Barvar-2 + organic control, respectively. The highest (11.53 kg kg-1) and the lowest (0.0001 kg kg-1) nitrogen use efficiency (NUE) were achieved in control treatment + animal manure and when no organic and biofertilizers were applied, respectively. Therefore, the highest (11.53 kg kg-1) and the lowest (0.0001 kg kg-1) NUE were obtained in control + animal fertilizers and when no fertilzers were applied. Considering that the simultaneous application of biological fertilizers (nitroxin + Barvar-2) and animal manure is superior in terms of grain harvest index (35%), therefore, it was more priority and recommendable in the region

In order to investigate the effect of integrated application of biological and organic fertilizers on absorption and phosphorus physiological efficiency in medicago sativa in Aran and Bidgol citiy in 2013, A factorial experiment was conducted in a randomized complete block design with three replications. Experimental factors include four levels of biofertilizers (control, nitroxin fertilizer, Fertilizer Phosphate-2 and the combination of Nitroxin and Fertilizer Phosphate-2) and Four levels of organic fertilizer (control, cow manure, sheep manure and chicken manure) were 10 tons per hectare. The results showed that the use of biological fertilizers had a significant effect on plant height, stem dry weight, leaf dry weight, leaf-to-stem ratio, grain yield, biological yield and harvest index at a significant level of 1%. Also, the effect of organic fertilizers on plant height, stem dry weight, leaf dry weight, leaf-to-stem ratio, grain yield, biological yield, harvest index, physiological efficiency and phosphorus use efficiency were significant at 1% level. Among the comparison of the averages of intraction effects, the highest physiological efficiency of phosphorus related to the treatment (no inoculation with biological fertilizer + consumption of 10 tons per hectare of cow manure) with an average of 35.78 kg of grains produced per kg of phosphorus used and the lowest amount of physiological efficiency of phosphorus. It belonged to the treatment (not using biological fertilizer + not using organic fertilizer.

Drought stress can have many effects on the agronomic and physiological characteristics of plants. Corn is used in human and animal nutrition. It has 60-72% starch and 8-11% protein (Darrah et al., 2019). The high water requirement of corn is one of the most important effective factors in preventing the development of its cultivated area. Therefore, It is very important to introduce new corn hybrids that tolerate drought (Corcoles et al., 2019: Rudnick et al., 2017). Selenium is an essential and rare element, which has many effects on human health and physiological characteristics of plants (Rayman, 2017). The research results have shown that the use of selenium fertilizers is a suitable solution to increase the tolerance of plants to environmental stresses such as drought stress. This research was conducted to investigate the effect of selenium spraying on the electrical conductivity of cell sap in corn cultivars under drought stress conditions.

This experiment was conducted in 2011 in the twice split-plot arrangement of treatment in a randomized complete block design with three replications in a training-research farm. Payam Noor University of Central Province (Arak city) was implemented. Drought stress (I0= Control irrigation, I1= Irrigation about 80% plant requirement water, I2= Irrigation about 60% of plant requirement water, were assigned in the main plots, maize cultivars (V1= KSC 500, V2= KSC 520, V3= KSC 700) in sub plots and foliar treatment of selenium in two levels (Se0= Control, Se1= 20 g ha-1) in sub-sub plots. In this study characteristics such as: ear height, panicule length, number of ear m-2, stem height, forage yield and un-stability of cell membrane were assessed.

The results showed that the effect of water stress treatment on the traits of stem height (5%), forage yield and cell membrane instability (1%) was significant. Also, the difference of maize cultivars was significant in terms of the number of ear m-2, forage yield and cell membrane instability. The highest and lowest values of cell membrane instability with an average of 1759 and 1456 µs cm-1, respectively, belonged to the irrigation treatment based on 60% of the water requirement of the plant and the control irrigation treatment. Among the maize cultivars, the highest and lowest values of cell membrane instability with an average of 1675 and 1587 µs cm-1, belonged to KSC 700 and KSC 500, respectively. Selenium consumption had a positive effect on reducing the amount of cell membrane instability, so that the average cell membrane instability in the treatment without selenium consumption decreased from 1687 to 1601 µs cm-1, in the treatment with selenium consumption.

The results of this research showed that by changing the irrigation regime from normal conditions to irrigation based on 60% of water requirement of maize, forage yield decreased by 23.35%. The response of maize cultivars was also different in terms of forage yield, so that cultivar KSC 700 was superior to the other two cultivars. The use of 20 (g ha-1 of selenium) increased the forage yield by 64.4%.

In order to Response of agronomic traits of forage corn to simultaneous cropping with legumes, nitrogen levels and cultivator application. A factorial randomized complete block design with three replications was used. Urea manure levels [N0= without urea (Control), N1= 150 Kg ha-1 of urea, N2= 300 Kg ha-1 of urea) and simultaneous cropping treatment, (S1= cultivation of corn, S2= cultivation of corn + cultivator application, S3= cultivation of corn + cultivator application + soybean, S4= cultivation of corn + cultivator application + cowpea, S5= cultivation of corn + cultivator application + alfalfa) were assigned in plots. In this study, traits such as stem diameter, height of earing, number of ear, wet weight of ear, number of grain per m-2, harvest index, biological yield, wet weight of stem and leaf and surface of ear leaf were evaluated. The result have shown that the interaction effect of urea levels and simultaneous cropping + cultivator application treatment was significant on stem diameter, height of earing, wet weight of ear, number of grain per m-2, harvest index, biological yield and wet weight of stem and leaf. The highest and lowest of biological yield (18.13 and 9.60 ton ha-1) were obtained with the cultivation of corn + cowpea + 150 Kg ha-1 of urea + cultivator application and cultivation of corn + cowpea + cultivator application + 0 Kg ha-1 of urea manure, respectively

In order to effect of urea levels and simultaneous cropping of legumes on agronomic characteristics and total biomass of corn, this study was carried out in field of agricultural research center of Markazi province in 2013. A factorial arrangement of treatment in a randomized complete block design with three replications was used. Urea manure levels [N0= without urea (Control), N1= 75 Kg ha-1 of urea, N2= 150 Kg ha-1 of urea, N3= 225 Kg ha-1 of urea) and simultaneous cropping treatment, (S1= Cultivation of corn, S2= Cultivation of corn + chickpea, S3= Cultivation of corn + cowpea, S4= Cultivation of corn + mung bean) were assigned in plots. Results indicated that the effect of urea levels on the characteristics such as: wet weight of Stem + leaves, wide of ear leaf, dry weight of ear + husk, nitrogen agronomic efficiency, number of legumes grains per m-2, total biomass of corn + legumes and amount of nitrogen absorbtion was significant. Effect of simultaneous cropping treatment on the characteristics such as: wet weight of Stem + leaves, nitrogen agronomic efficiency, number of legumes grains per m-2, total biomass of corn + legumes and amount of nitrogen absorbtion was significant, too. The maximum and minimum of total biomass of corn + legumes (36.42 and 21.47 ton ha-1) were obtained with the (225 Kg ha-1 urea + Simultaneous cropping of chickpea and corn) and (non application of urea + Simultaneous cropping of corn and mungbean) treatments, respectively.

The sunflower is one of the most important oily plants in the world. To study different methods of chemical fertilizer, biological and manure nutrition with foliar application of plant biostimulant on grain yield in sunflower, a factorial arrangement of treatment in a randomized complete block design with three replications was carried out in a field of Payaam Nour Arak University in Markazi province in the year of 2013. Nutrition methods [N1= 300 Kg ha-1 Urea (Control), N2= 50% of nutrition by Urea + 50% of nutrition by FAM (15-ton ha-1), N3= 50% of nutrition by FAM + 50% of nutrition by nitrogen fixation of Phaseolus sp.), N4= 50% of nutrition by Urea + 50% of nutrition by nitrogen fixation of Phaseolus sp.) and plant bio-stimulants (B1= Foliar with wermiwash, N2= Foliar with enrich wermiwash, N3= Foliar with bio ferment, N4= Foliar with effective microorganisms + quail egg) were assigned in plots. Results indicated that the effect of different levels of nutrition methods on the characteristics such as stem height, dry weight of stem and leaves, grain yield, productivity index of plant and number of grain per m-2 were significant. The Effect of plant bio-stimulants treatment on the characteristics such as stem diameter, dry weight of stem and leaves, grain yield, productivity index of plant, 1000 grain weight and the number of grain per m-2 were also significant. The maximum and minimum of grain yield (3705 and 3133 kg ha-1) were obtained with the 300 Kg ha-1 Urea (Control) and (50% of nutrition by Urea + 50% of nutrition by nitrogen fixation of Phaseolus sp.) treatments, respectively. In the biostimulant treatment, the most and least amount of grain yield with an average of 3744 and 3031 Kg ha-1, were spray of effective microorganisms and enriched vermiwash, respectively.

In order to evaluate of nitrogen efficiency and grain yield of white bean under combined application of organic and biological fertilizers in Niasar region, a factorial experiment based on randomized complete block design with three replications was conducted in 2015. The first factor included four levels of biological fertilizer (control, inoculation with nitroxin, Barvar-2 and nitroxin + Barvar-2) and second factor included four levels of organic fertilizer (control, farmyard manure, mushroom compost and vermicompost). In this study characteristics such as number of grains per plant, weight of 100 grains, grain yield, number of days to maturity, nitrogen percentage, amount of phosphor absorbed by plant and physiological efficiency of nitrogen were assessed. Results showed that the interaction effect of organic and bio-fertilizers was significant on number of grains per plant, grain yield, number of days to maturity, nitrogen percentage, amount of phosphor absorbed by plant and efficiency of nitrogen. The maximum nitrogen efficiency (0.25 kg.kg-1) was obtained by inoculation with Azotobacter + farmyard manure and the minimum of nitrogen efficiency (0kg.kg-1) by control+control. The maximum of grain yield (3083 kg.ha-1) were obtained by vermicompost and the minimum of grain yield (2524 kg.ha-1) by control treatment. Therefore, the combined application of organic and biological fertilizers, could improve the quantitative and qualitative traits of the Bean.

In order to evaluate of nitrogen use efficiency and agronomic characteristics of winter wheat to rate, time and method of nitrogen application, this study was carried out in the field of Payaam Nour Arak University in Markazi province in 2011. A factorial arrangement of treatment in a randomized complete block design with three replications was used. Factors were included 1- time of nitrogen application (T1= 50% of nitrogen in sowing date + 50% of nitrogen in tillering stage, T2= 50% of nitrogen in tillering stage + 50% of nitrogen in stem elongation, T3= 50% of nitrogen in stem elongation + 50% of nitrogen in heading stage), 2- rate of nitrogen application (R1= 150 kg ha-1 urea, R2= 300 kg ha-1 urea) and 3- method of nitrogen application (M1= mix with soil, M2= using by irrigation, M3= foliar application). Each plot consisted of 4 rows, 5 m long. Results indicated that the using time affected on the characteristics such as: stem height, peduncle and spike length, number of spike per m-2, number of grain per m-2, spike biological yield, economical yield of spike, and nitrogen use efficiency significantly. The effect of nitrogen rate was significant on stem height, peduncle and spike length, number of grain per m-2, spike biological yield and nitrogen use efficiency, too. Results indicated that the nitrogen use efficiency was significantly higher than of other treatments in foliar application of urea fertilizer (150.4 %) and using nitrogen by irrigation (14.07 %).

The current study aimed at assessing the job satisfaction amongemployees of the East Azerbaijan power distribution company in 2015. Inthis research, 232 employees of Power Company were selected bystratified random sampling from 8 populated cities of East Azerbaijan. Tothis purpose, different dimensions of job satisfaction measurement wereextracted from theoretical and empirical background and categorized into8 dimensions. Then, using the Structural Equation Modeling method, themeasurement model was designed by LISREL package. The findingshowed that, 1. the goodness of fit of measurement model was in thedesired level and the construct validity of the scale was largely confirmed.Also, results of (φ) coefficient showed that, there is a positive two-waycorrelation between different dimensions of job satisfaction.2. respondents' attitude toward job satisfaction was at the high level andthe highest satisfaction was related to the dimensions of sense of honor(84.7%) and employee training (74.8%) respectively. Also, the averagetotal score of satisfaction among all the studied cities was high and theobserved differences in the satisfaction score among cities aremeaningful.

Use of integrated plant nutrition methods could improve the quantity and quality of crops. This study was carried out in order to study of effects of effective microorganisms and enriched vermiwash with different methods of plant nutrition on sunflower yield in during 2013. The experiment was done as a factorial arrangement of treatments, in a randomized complete blocks design with three replications. Treatments consisted of different nutrition methods [N1= 300kg ha-1 Urea (Control), N2= 50% of nutrition by Urea + 50% of nutrition by FAM (15ton ha-1), N3= 50% of nutrition by FAM + 50% of nutrition by nitrogen fixation of Phaseolus sp.), N4= 50% of nutrition by Urea + 50% of nutrition by nitrogen fixation of Phaseolus sp.) and foliar spray of plant bio-stimulants (B1= Foliar with vermiwash, B2= Foliar with enrich vermiwash, B3= Foliar with bioferment, B4= Foliar with effective microorganisms + quail egg). The results indicated that the foliar spray of plant bio-stimulants caused marked changes in characteristics such as number of green leaf, dry biomass, harvest index of head, oil yield, hectoliter weight and nitrogen use efficiency. The maximum and minimum of nitrogen use efficiency (16.72 and 11.02%) were obtained with the (50% of nutrition by animal manure + 50% of nutrition by nitrogen fixation of phaseolus) and (50% of nutrition by animal manure + 50% of nutrition by 150kg ha-1 Urea) treatments, respectively. Furthermore, in the treatments of bio-stimulat levels, the most and least amounts of nitrogen use efficiency with averages of 15.46 and 12.59% were obtained with foliar spray of (effective microorganism + quail egg) and enriched vermiwash, respectively.

In order to the effect of Simultaneous Cropping on agronomic characteristics of spring safflower cultivars (Cartamus tinctorius L.) in Aran and Bidgol region, this study was carried out in field of Kashan city of Esfahan province in 2013. A factorial arrangement of treatment in a randomized complete block design with three replications was used. Spring safflower cultivars (V1= Faraman, V2= Goldasht, V3= Esfahan local, V4= Soffeh) and Simultaneous cropping treatment, (S1= Cultivation of safflower + chickpea, S2= Cultivation of safflower + alfaalfa, S3= Cultivation of safflower + onion, S4= Cultivation of safflower) were assigned in plots. Each sub plot consisted of 4 rows, 5 m long with 60 cm between rows space and 4 cm between plants on the rows was used. In this study characteristics such as: days to bolling, number of branches, weight of boll, number of grain per plant, grain yield in plant, grain yield in m-2, biological yield, harvest index and alfalfa biomass were assessed. Results indicated that the effect of safflower cultivars on the characteristics such as: days to bolling, weight of boll, number of grain per plant, grain yield in plant, grain yield in m-2 and harvest index was significant. Effect of Simultaneous cropping treatment on the characteristics such as: weight of boll and biological yield was significant, too. The maximum and minimum of harvest index (33.31 and 26.52 %) were obtained with the Esfahan local and Soffeh cultivars, respectively.

Water deficiency affects photosynthesis, respiration and transpiration by affecting cellular swelling and opening and closing openings. Also, by affecting enzyme processes directly controlled by water potential, it negatively affects plant growth (Brar et al., 1990). Salicylic acid is a phenolic compound and has an antioxidant effect in regulating the physiological processes of plants. Salicylic acid is known as an important messenger molecule in plant responses to various biotic and non-biological stresses (El-Tayeb, 2005). Salislic acid increases wheat and corn resistance in salt conditions (Gunes et al., 2007). Salicylic acid also increases the resistance of plants to biological and non-biological stresses such as drought stress (Sing and Usha, 2003). The aim of this experiment was to evaluate the susceptibility indices of early maize, medium clay and late corn varieties. For this purpose, stress tolerance indices were used to estimate yield in stress and non stress conditions, so that the most suitable indices or indicators of stress tolerance along with superior genotype were determined. In order to evaluate the study of stress susceptibility Indies of maize cultivars under water stress and salicylic acid application, this study was carried out in field of Arak Payam Noor university in 2009. Twice split-plot arrangement of treatment in a randomized complete block design with three replications was used. Water stress (I0= Control irrigation, I1= Irrigation about 80% plant requirement water, I2= Irrigation about 60% of plant requirement water, were assigned in the main plots, maize varieties (V1= S.C 370, V2= Apex, V3= S.C 704) in sub plots and foliar treatment of salicylic acid in two levels (Sa0= Control, Sa1= 300 ppm) in sub-sub plots. Each sub plot consisted of 4 rows, 5 m long with 50 cm between rows space and 20 cm between plants on the rows. In this study characteristics such as: stem height, panicule length, number of ear m-2, ear height, forage biomass, stress susceptibility index, tolerance, mean productivity, geometric mean productivity, stress tolerance index, yield index and yield stability index were assessed. After analyzing the data, the meanings were compared with Duncan's multiple range tested at a probability level of 5%. Also, all correlation coefficients between studied traits were calculated and their significance was determined by Mstat-c software. In the analysis of variance table, the effects of treatment of water stress levels and different maize varieties on the biomass traits were significant at 1% probability level. So that among the levels of water stress, the highest amount of forage biomass with mean 40.3 ton ha-1 and the lowest is the average 28.06 ton ha-1 related to intense water stress treatment. In this study, the use of the TOL indicator showed that the Apex hybrid had the lowest value (7.45) and the hybrid S.C 370 with the amount of (9.09) respectively, had the highest and lowest levels of water stress tolerance among cultivars. SC 704 cultivar with average (1.18) the highest tolerance to stress was achieved.
Results indicated that the treatment effect of water stress on traits such as panicule length, number of ear m-2, forage biomass was significant. The treatment effect of cultivars of maize on traits such as stem height, panicule length, ear height and forage biomass was significant, too. The S.C 704 hybrid was markedly superior performance than other cultivars in stress susceptibility index, mean productivity, stress tolerance index, geometric mean productivity, yield index and yield stability index. According to the results of this study, with increasing water deficit stress, forage yield decreased by about 30%. However, with normal irrigation, the highest silage yield was obtained. Among cultivars, S.C 704 had a remarkable advantage. Also, Salicylic acid increased forage yield, although this increase was not significant.

This article concentrates on the identifying some influential factors related to Social Security among citizens of Tabriz metropolitan in 2016. This study is a cross-sectional survey and using multi-stage cluster sampling method 400 cases selected as the sample size. Population of the study was the citizen's between 18-64 years old and the Likert scale were used for data gathering. In order to investigate the reliability and construct validity of the scales, Cronbach's alpha coefficient and confirmatory factor analysis were used respectively. This article used Pearson correlation for bivariate analysis, and structural equation model (SEM) for multivariate analysis. The statistical packages used in this study are SPSS20 and Lisrel 8.8 software. The findings suggest that, 1. the level of social security in different aspects (objective and subjective) among the citizens is moderate, 2. there is a meaningful relationship between social security and residential 3. The model showed that internal factors such as awareness, life satisfaction and Citizenship responsibility compared to external and physical factors, such as police presence and its function, have a more significant effect on creating social security among citizens of Tabriz 4. It was also found that media plays an important role in increasing social security in the community.

To investigate the response of safflower agronomic characteristics to time, rate and method of nitrogen applications, an experiment was carried out at the research Field of Payaam Nour Arak University in Markazi province during 2011. A factorial arrangement of treatment in a randomized complete block design with three replications was used. Time of nitrogen treatment was with three levels (half in planting date half in rosette stage), (half in rosette stage half in stem elongation) and (half in stem elongation half in boll forming stage), urea application was two levels (150 and 300 kg.ha-1) and method of application was with three levels (mixed with soil, used in irrigation water and foliar application). Each plot consisted of 4 rows, 5 m long with 50 cm between rows and 5 cm between plants on the rows. Results indicated that the effect of application time on the characteristics like: height of branch, number of sub-branches, number of seeds per m-2, number of seeds per plant, biological yield of bolls, seed yield of bolls, harvest index of bolls were significant. The effect of nitrogen treatment rates on branch height, number of sub-branches, number of seeds per m-2, number of seeds per plant, biological yield of boll, harvest index of boll, and nitrogen use efficiency were also significant. Mean nitrogen use efficiencies for foliar application was 63.27% and for soil mixed application was 6.86%. Thus, it seems that foliar application of urea not only decreases environmental but also increases nitrogen use efficiency.

In order to evaluate the effect of water stress and water absorbent materials on some agronomic traits and seed protein of Alvand wheat, this study was carried out in the field of Islamic Azad University, Arak branch in 2010- 2011. A split-plot arrangement of treatment in a randomized complete block design with three replications was used. The experiment consisted of three irrigation treatments (100%, 85% and 70% of plant water requirement) that applied in the main plot and water absorbent materials on six levels (controls, 30 tons animal manure per hectare, 15 tons animal manure 4 tons zeolite per hectare, 15 tons animal manure per hectare 2 tons bentonite per hectare, 4 tons zeolite per hectare 2 tons bentonite per hectare and 15 tons animal manure per hectare 2 tons bentonite per hectare 4 tons zeolite per hectare that used in the sub plots. Results showed that the highest grain protein content obtained from 70% irrigation with average of 15.44 percent and lowest protein content was determined in normal irrigation treatment with average of 13.58 percent. The maximum and minimum grain yield with the average of 6590 and 3500 kg ha-1 were related to the combination of normal irrigation 15 tons animal manure 4 tons zeolite per hectare and 70% irrigation 15 tons animal manure per hectare, respectively.

The effect of organic fertilizers, chemical nitrogen and phosphorus on oil content and some of agronomic traits of safflower (Carthamus tinctorius), was studied in 2014. A factorial arrangement of treatments in a randomized complete block design with three replications was used. Animal manure treatments (M1= Control, M2= 20 ton.ha-1, M3= 40 ton.ha-1), and Chemical fertilizer treatments (F1= Control, F2= 50 kg.ha-1 of nitrogen 25 kg.ha-1 of P2O5, F3= 100 kg.ha-1 of nitrogen 50 kg.ha-1 of P2O5, F4= 150 kg.ha-1 of nitrogen 75 kg.ha-1 of P2O5) were assigned in plots. In this study characteristics such as: stem diameter, number of sub branch, number of kernels per m-2, biological yield, phosphorus agronomic efficiency, grain weight of capitol, phosphorus physiological efficiency, oil content, nitrogen content of grain, number of unfertile capitol, phosphorus appear recovery and capitol diameter were assessed. Results indicated that the interaction effects of chemical fertilizer and animal manure on the characteristics such as: number of sub branch, biological yield, and nitrogen content of grain, phosphorus agronomic efficiency, phosphorus physiological efficiency and phosphorus appear recovery was significant. The maximum and minimum of phosphorus physiological efficiency (65.88 and 6.21 kg.kg-1) were obtained in treatment of 50 kg.ha-1 of nitrogen 25 kg.ha-1 of P2O5 40 ton.ha-1 of animal manure and 50 kg.ha-1 of nitrogen 25 kg.ha-1 of P2O5 20 ton.ha-1 of animal manure, respectively.

Electrical conductivity of wheat cell sap and chlorophyll concentration of its leaves under drought stress and application of zeolite were evaluated in a split plot experiment, by using a RCBD with three at Arak Payam-Noor University in 2010. Treatments were four levels of water stress (I0= control irrigation, I1= irrigation at 85% of I0, I2= irrigation at 70% of I0, I3= irrigation at 55% of I0) assigned to the main plots and four levels of zeolite applications (Z0= without zeolite application, Z1= 3 t.ha-1, Z2= 6 t.ha-1, Z3= 9 t. ha-1) to the sub plots. Sub plots consisted of 4 rows of 5 m long spaced 50 cm apart and 20 plants per meter on the rows. In this study traits like peduncle length, awn length, number of spike per m-2, grain yield, electrical conductivity by using water with 50and 60oC were assessed. Results indicated that intraction effect of water stress and zeolit application on number of spike per m2, seed yield, and electrical conductivity at 50and 60oC water were significant. Mean comparisons of intraction effects showed that electrical conductivity of water with 50 and 60 oC (447 and 476 respectively) resulted in the least detrimental effect on cell membrane. Results also revealed that electrical conductivity at control irrigation (554 µs.cm-1) and application of 9 t.ha-1 of zeolit produced highest seed yield (4901 kg.ha-1) at wheat.

The barley is one of the most important cereal crops. In order to study the effect of seed rate and nitrogen levels on agronomic characteristics and nitrogen use efficiency of barley, this study was carried out in Aran and Bidgol region in 2014. A factorial arrangement of treatment in a randomized complete block design with four replications was used. Seed rate treatment (S1= 150, S2= 225, S3= 300 kg ha-1) and nitrogen levels treatment (N1= 0, N2= 75, N3= 150 kg ha- 1), were assigned in plots. Each plot consisted of 6 row, 5 m long with 50 cm between rows space and 5 cm between plants on the rows was used. In this study Plant height, number of fertile tiller, 1000 grain weight, number of grain per spike, grain yield, harvest index, protein percent, nitrogen use efficiency, nitrogen appear recovery and amount of nitrogen absorbed were assessed. Results indicated that the interactin effect of seed rate and nitrogen levels treatment on the characteristics such as: nitrogen use efficiency and nitrogen appear recovery was significant. The maximum and minimum of nitrogen appear recovery with average (0.44 and 0.14 %) were obtained by the treatment (150 kg ha-1 of seed + 75 kg ha-1 of nitrogen application) and (300 kg ha-1 of seed + 150 kg ha-1 of nitrogen application), respectively.

Corn has been regarded as one of the important crops from the view point of both human and animal feeding resource. Intercropping defined as cultivation of two or more species together. The advantages of intercropping can be included: efficient use of water and sunlight, exchange of nutrients, weed competition reduction, reduction of pathogens and the increase of soil fertility. Research shows that intercropping combinations of legume–grass will increase forage quality. Because, grasses Grains have a lot of carbohydrates and legumes are rich in protein and vitamins. This study was conducted to evaluate the effect of inoculation with azotobacter and nitrogen levels on grain and corn yield components at simultaneous cropping system with legumes under the weather conditions of Markazi province.
This study was carried out at agricultural research field of Payame Noor University, Arak Branch during 2011. A factorial arrangement of treatment in a randomized complete block design with three replications was used. Methods of plant nutrition (M0= inoculation with azotobacter, M1= inoculation with azotobacter 37/5 Kg ha-1 of rare nitrogen with foliar application method, M2= inoculation with azotobacter 150 Kg ha-1 of rare nitrogen mix with soil) and simultaneous cropping treatment of legumes, [S1= corn alfalfa (Medicago sativa L.), S2= corn bitter vetch (Lathyrus sativus L.), S3= corn mung bean (Vigna radiata L.), S4= corn chickpea (Cicer arientinum L.), S5= corn vetch (Vicia ervillia L.) ] were assigned in plots. Each sub plot consisted of 4 rows, 6 m long with 60 cm between rows space and 20 cm between plants on the rows and S.C Apex hybrid was used. In this study characteristics such as: plant height, earing height, the number of grains per m-2, the number of rows per ear, the number of grains per row, surface of ear leaf, grain yield of corn, 1000 grain weight, harvest index of corn, nitrogen use efficiency, dry weight of legumes were assessed. After analyzing the data, the means by Duncan multiple range test were compared to five percent. All of the correlation coefficients were calculated and their significance was determined by Mstat-c software.
Results indicated that the effect of nutrition methods on corn characteristics such as: plant height, the number of grains per m-2, the number of grains per row, surface of ear leaf, grain yield of corn, 1000 grain weight, nitrogen use efficiency and dry weight of legumes was significant. The impact of simultaneous cropping treatment on the characteristics such as: plant height, the number of grains per m-2, the number of grains per row, corn grain yield, 1000 grain weight, corn harvest index, nitrogen use efficiency, dry weight of legumes was significant, too. Maximum and minimum grain yield (4237 and 1973 kg ha-1) were obtained with the (inoculation with azotobacter 150 Kg ha-1 nitrogen fertilizer Simultaneous cropping system of vetch and corn) and (inoculation with azotobacter Simultaneous cropping system of corn and alfalfa) treatments, respectively. Inoculation with azotobacter 37.5 Kg ha-1 nitrogen fertilizer simultaneous cropping system of vetch and corn with 51.7 kg kg-1 and inoculation with azotobacter 150 Kg ha-1 nitrogen fertilizer simultaneous cropping system of corn and chickpea with 10.1 kg kg-1 were the highest and lowest amount of nitrogen use efficiency.
Over the past few decades, global approach to modern agriculture, as in other human activities has been causing damage to natural resources, polluting and destroying the environment and causing ecological imbalance. Inorganic fertilizers used in agriculture cause the destruction of natural ecosystems. Therefore, combined use of bio-fertilizers, chemicals manures and nitrogen fixation by the legume will increase the quantity and quality of agricultural products. It can also be one of the most effective ways to achieve sustainable agriculture. But, application of chemical fertilizers causes soil degradation and increase the production cost.

Increasing overuse of chemical fertilizers has been causes environmental pollution, degradation of soil and crops. In order to study the effect of integrated application of chemical and animal manures on yield and yield components of spring safflower, the study was carried out in Fatholmobin field of Kashan in 2014. A factorial arrangement of treatment in a randomized complete block design with three replications was used. Chemical fertilizer treatment (Control, 50 kg ha-1 of nitrogen 25 kg ha-1 of P2O5, 100 kg ha-1 of nitrogen 50 kg ha-1 of P2O5, 150 kg ha-1 of nitrogen 75 kg ha-1 of P2O5) and animal manure treatment (Control, 20 ton ha-1, 40 ton ha-1), were assigned in plots. Stem height, number of branches, number of bolls per plant, grains per boll, boll harvest index, 1000 grain weight, grain yield, protein content, phosphorus absorption, nitrogen agronomy efficiency and nitrogen use efficiency were determined. Results indicated that the interaction effects between chemical fertilizer and animal manure on 1000 grain weight, grain yield, protein content, phosphorus absorption, nitrogen agronomy efficiency and nitrogen use efficiency were significant. The highest and lowest of grain yield 1031 and 268 kg ha-1 were obtained in 150 kg ha-1 of nitrogen 75 kg ha-1 of P2O5 20 t ha-1 of animal manure and without application of the chemical and animal manure, respectively.

The adverse effects of unfavorable environmental factors are important in warm and dry regions due to limited water resources and evaporation. This study was carried out to determine agronomic traits and oil yield of safflower (Carthamus tinctorius L.) cultivars planting methods at Kashan in 2014. The experiment was conducted as factorial arrangemed in a randomized complete block design with three replications. Treatments were planting methods (flooding, furrow bed method, high water mark, planting on rows) and safflower cultivars (Goldasht, Esfahan local, Soffeh). Each plot consisted of 4 rows, 5 m long with 50 cm between rows space and 5 cm between plants on the rows. Plant height, stem diameter, number of branch, number of unfilled capsuls, number of capsuls per m-2, number of seed per m-2, weight of seeds, biological yield, harvest index of plant and oil yield were measured. Results showed that the interaction between safflower cultivars and planting methods on plant height, number of capsuls per m-2, number of seed per m-2, weight of capsuls grains, biological yield of plant, harvest index and oil yield was significant. The highest and lowest oil yield (389.7 and 254.3 kg ha-1) were obtained with Goldasht cultivar in high water mark and Esfahan local cultivar in planting on furrow. Therefore, safflower planting at high water mark method can reduces the accumulation of salts from the evaporation surface in areas with hot and dry weather, such as kashan... .

To study the effect of nitrogenous fertilizers and mixed cropping of legumes and maize on its grain yield and yield component of corn in Arak, an experiment was carried at the Agricultural Research Center of Markazi Province in 2013. A factorial experiment based on randomized complete block design with three replications was performed. Treatments were four levels of urea (N0= control, N1= 75 kg.ha-1, N2= 150 kg.ha-1, N3= 225 kg.ha-1) and mixed cropping with four levels (S1= planting corn, S2= planting corn chickpea, S3= planting corn cowpea, S4= planting corn mung bean). Plot consisted of 4 rows, 6 m long with 60 cm between rows space and 20 cm between plants on the rows, and S.C 704 corn hybrid was used. In this study characteristics such as: plant height, number of green leaf, grain yield, number of row per ear, number of grain per ear row, nitrogen use efficiency, biomasses of legumes, nitrogen percentage and 1000 grain weight were assessed. Results indicated that the effect of different levels of urea on plant height, number of green leaf, grain yield, number of grain per row, nitrogen use efficiency, legumes biomass and nitrogen percentage were significant. Effect of mixed cropping on characteristics like grain yield, nitrogen use efficiency, biomasses of legumes nitrogen percentage was also significant. Highest and lowest grain yield (7.37 and 5.47 t.ha-1) were obtained with the use of 225 and 75 kg.ha-1 urea, respectively. The highest and lowest grain yield (7.30 and 6.01 t.ha-1) belonged to sole cropping at corn and mixed cropping of corn mung bean, respectively.