مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Issue Information

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources
Title: 
Author(s): 

Issue Info: 
  • Year: 

    0
  • Volume: 

    30
  • Issue: 

    4 الف
  • Pages: 

    -
Measures: 
  • Citations: 

    0
  • Views: 

    387
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 387

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesCitation 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesRefrence 0
Title: 
Author(s): 

Issue Info: 
  • Year: 

    0
  • Volume: 

    30
  • Issue: 

    4 الف
  • Pages: 

    -
Measures: 
  • Citations: 

    0
  • Views: 

    842
  • Downloads: 

    0
Keywords: 
Abstract: 

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 842

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesCitation 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesRefrence 0
Issue Info: 
  • Year: 

    2016
  • Volume: 

    30
  • Issue: 

    4
  • Pages: 

    367-377
Measures: 
  • Citations: 

    0
  • Views: 

    658
  • Downloads: 

    0
Abstract: 

Land utilization has tremendously increased as a result of growing population. Therefore, it is necessary to utilize lands according to their potential to increase their productivity and sustainability. As assessing the land suitability is a multifactorial issue, it needs a special technique to assess all the factors simultaneously. In this way, multi-criteria decision making methods (such as Analytic Hierarchy Process) are widely used. In this study, AHP and FAO methods of land suitability evaluation for rainfed wheat were compared for some lands in Kuhin area. Based on the study of 23 soil profiles, 1/40000 aerial photo interpretation of the region, and taking into account the characteristics of soil morphology, 16 soil units (land units) were determined in the area and land evaluation was performed on these units. Nine criteria including: %CaCo3, %OC, %gravel, soil depth, texture, apparent CEC, pH, %slope, and climate (precipitation of the growing season, monthly rainfall, vegetative stage, mean temperature of the growing season, and mean temperature of the vegetative stage) were selected. Then, these criteria were compared in terms of decision matrix. Comparison of AHP and FAO land indices showed that AHP index for all land units was much more than that of FAO. Maximum and minimum calculated land indices were 72. 5 (land unit 5) and 48. 52 (unit 11), respectively. The correlation coefficients between land index and observed yield in the study area for AHP method and FAO method were 0. 858 and 0. 739, respectively.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 658

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesCitation 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesRefrence 0
Author(s): 

HOSSEINI YAGHOUB

Issue Info: 
  • Year: 

    2016
  • Volume: 

    30
  • Issue: 

    4
  • Pages: 

    379-390
Measures: 
  • Citations: 

    0
  • Views: 

    876
  • Downloads: 

    0
Abstract: 

Awareness of the nutritional status of trees will help balanced fertilization. The average yield per hectare of lime orchards in the country, compared to the global average, is low, partly as a result of nutritional imbalance. DRIS method can be used to knownutrient status of orchards. In this method, an index is used that indicates the nutritional status and nutrient deficiency or excess, and allows prioritizing nutrients need for plants. In this study, lime orchards in three important areas of the province, namely, the Hashtbandi, central Minab, and Roudan were selected. Samples of the leaves were analyzed and yield measurements were done in 60 orchards. According to the DRIS indexes obtained in this study, nutritional status of the lemon orchards in the main production areas of the province were evaluated. The average of DRIS index for macroelements i. e. nitrogen, phosphorus, and potassium was-6. 07, 0. 81 and-2. 68, respectively. Thus, the priority of the macronutrients needs was N> K> P in lime orchards of the province. The average of DRIS index for microelements including manganse, iron, boron, zinc, copper, and chloride was-8. 79,-6. 10, 2. 6, 4. 89, 7. 66 and 8. 21, respectively, thefore, nutritional priorities for micronutrients was Fe> Mn> Zn> Cl> B> Cu. The overall priority of nutrients deficiencies was obtained as Mn> Fe> N> K > P B> Zn> Cu> Cl. According to the results, appropriate decisions can be made in order to balance fertilization. In these orchards, it is recommended that consumption of micronutrients such as manganese and iron, and macroelements like nitrogen and potassium be at a higher priority.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 876

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesCitation 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesRefrence 0
Issue Info: 
  • Year: 

    2016
  • Volume: 

    30
  • Issue: 

    4
  • Pages: 

    391-402
Measures: 
  • Citations: 

    0
  • Views: 

    928
  • Downloads: 

    0
Abstract: 

To study the effect of nitrogen, phosphorus, and potassium concentrations on yield and growth index of strawberry cv. ‘ Selva’ in hydroponic conditions, an experiment was carried out as factorial arrangement in completely randomized design with three replications. The culture medium used in this study was a mixture of peat and perlite in a ratio of 70% and 30%, respectively. Treatments included nitrogen at three levels (100, 130 and 160 mg/L) from ammonium nitrate source, phosphorus (50, 75, and 100 mg/L) from potassium dihydrogen phosphate and potassium (160, 190, and 220 mg/L) from potassium sulfate source. Sampling was done at the end of the fruiting period and data were recorded on shoot dry and fresh weight, leaf area, fruit weight, titratable acid, total soluble solids, yield, and number of fruit per plant. ANOVA results showed that the different levels of nitrogen, phosphorus, and potassium had significant effects on yield and growth of strawberry. Treatment N160P100K190produced the highest fresh and dry weight and leaf area. Treatments N130P100K160 and N100P75K220 produced the highest yield with an average of, respectively, 79. 27 and 77. 77 grams per plant and were not significantly different. Also, treatments N130P50K220, N130P75K190, and N130P100K160 produced the highest weight of fruits with an average of 10. 3, 9. 38, and 7. 65 g, respectively. Titratable acidity and soluble solids increased with increasing levels of the treatments. Treatment of N130P100K160was evaluated as more appropriate than the others because this concentration produced strawberry fruits with optimum quality and quantity and lower nutrient application levels, leading to lower salinity in the culture medium.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 928

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesCitation 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesRefrence 0
Issue Info: 
  • Year: 

    2016
  • Volume: 

    30
  • Issue: 

    4
  • Pages: 

    403-415
Measures: 
  • Citations: 

    0
  • Views: 

    526
  • Downloads: 

    0
Abstract: 

Vegetables are among the major sources of cadmium entering the human food chain, which can be a serious threat for human health. So, in order to evaluate effects of organic manure, chemical fertilizers, and their combination on cadmium accumulation and growth of purslane, a factorial experiment was conducted in completely randomized block design with three replications, in 2012. Fertilizer treatments included urea fertilizer (60 and 120 mg N kg-1 soil), cattle manure (60 and 120 mg N kg-1 soil), combined fertilizer (60+30, 45+45, 30+65 mg N kg-1 soil as urea fertilizer and cattle manure), and the control (no N amended). These were evaluated undertwo cadmium levels (no cadmium and 10 mg kg-1soil). Results indicated that concentration and uptake of cadmium in plant, decreased with increasing N rate, especially of cattle manure, and the lowest cadmium concentration was observed in 120 mg kg-1 in the form of cattle manure. Increase in nitrogen application from any source increased concentration and uptake of nitrogen. The greatest yield was obtained in 120 mg N kg-1 as cattle manure. There was no significant difference between 120 and 90 mg N kg-1 in the form of urea and the combined (1: 1) fertilizer. In general, it can be concluded that use of cattle manure in vegetables production prevents movement of soil cadmium into vegetables and it is an effective method for protecting food chain from Cadmium contamination.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 526

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesCitation 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesRefrence 0
Issue Info: 
  • Year: 

    2016
  • Volume: 

    30
  • Issue: 

    4
  • Pages: 

    417-425
Measures: 
  • Citations: 

    0
  • Views: 

    619
  • Downloads: 

    0
Abstract: 

Occurrence of chromium (Cr), particularly Cr (VI), in water and soil has created serious problems for human life and the environment. Its fixation by various methods in contaminated environments has attracted the attention of many researchers. In this regard, in order to investigate the uptake of chromium in red pepper (local cultivar), an experiment was conducted at Faculty of Agriculture, Shahrood University in the greenhouse conditions as randomized complete block design with three replications. The treatments consisted of control, diammonium phosphate, triple super phosphate, alfalfa powder, humic acid, diammonium phosphate + alfalfa powder, alfalfa powder + triple superphosphate, humic acid + ammonium phosphate, triple superphosphate + humic acid. Analysis of the results revealed that there were significant differences between treatments with regard to soil solution phosphorus, Cr (VI) (in root, shoot, and soil) and soil pH value (P<0. 05) and electrical conductivity (EC) (P<0. 01). In the treatments receiving alfalfa powder and humic acid alone and in combination with di ammonium phosphate, the absorption of chromium was less than the control, but the efficiency of humic acid was higher in association with diammonium phosphate. Among the treatments, alfalfa powder was the most efficient treatment in decreasing Cr (VI) accumulation in the plant shoots. The results showed that the accumulation of chromium (VI) in root was 34. 21 % more than shoot (stem and leaf). It seems that use of phosphate fertilizers and organic compounds can fix chromium in soil thereby decreasing the uptake and accumulation of chromium (VI) in tissues of the plant.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 619

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesCitation 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesRefrence 0
Issue Info: 
  • Year: 

    2016
  • Volume: 

    30
  • Issue: 

    4
  • Pages: 

    427-442
Measures: 
  • Citations: 

    0
  • Views: 

    501
  • Downloads: 

    0
Abstract: 

Potassium (K) fixation in soils creates hysteresis phenomenon between sorption and desorption branches of the isotherm. Therefore, the hysteresis index having highest correlation with K fixation might be introduced as the most proper index for this phenomenon. For this purpose, 12 soil samples with different clay mineralogy were selected from around Dasht-e-Tabriz and Marand regions. At first, K fixation of the soils was measured by addition of 250 and 2500 mg K/kg soil. Then, K sorption isotherms at 10 initial concentrations (5-250 mg K/L) and K desorption isotherms from the point corresponding to an initial concentration of 250 mg K/L were obtained using background solution (0. 01 M CaCl2) in 10 desorption cycles. The results showed that the amount of K fixation sharply decreased with increasing the saturation extract K concentration as well as the exchangeable K content. Moreover, the data obtained from both sorption and desorption branches were best fitted to the Freundlich equation. All hysteresis indices showed significant correlations with percentage of K fixed per one percent of clay. Aside from soils with high hysteresis indices, significant correlations were found between values of hysteresis indices and percentages of K fixed. The highest correlation was observed for the hysteresis index based on β exponent of the Freundlich equation.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 501

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesCitation 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesRefrence 0
Issue Info: 
  • Year: 

    2016
  • Volume: 

    30
  • Issue: 

    4
  • Pages: 

    443-455
Measures: 
  • Citations: 

    0
  • Views: 

    493
  • Downloads: 

    0
Abstract: 

Hydraulic conductivity is one of the important physical properties of the soil used extensively in water and soil science. Most of the soil processes take place in unsaturated soil conditions. This study was conducted in order to evaluate the effect of soil layering and water table on saturated and unsaturated hydraulic parameters using a tension disc in five suction heads, i. e. 0, 5, 10, 15, and 20 cm. The experimental tests were done on three same samples with 56 cm diameter and 85 cm height in three compacted layers with soil bulk densities of 1. 18, 1. 38 and 1. 68 gr. cm-3 and water table depths of 85 (no water table) 50, and 25 cm. Additionally, we considered a one-layered sample to investigate the effect of bulk density. The experimental results showed that soil layering caused changes in the values of saturated and unsaturated hydraulic conductivity. Also, sensitivity of the saturated hydraulic conductivity to soil layering was more than that of the inverse air entry suction(α ). Compared with the treatment with no water table, the saturated hydraulic conductivity of the layered soil in treatments with water table depths of 25 cm and 50 cm decreased by 52 % and 27. 6 %, respectively.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 493

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesCitation 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesRefrence 0
Issue Info: 
  • Year: 

    2016
  • Volume: 

    30
  • Issue: 

    4
  • Pages: 

    457-473
Measures: 
  • Citations: 

    0
  • Views: 

    503
  • Downloads: 

    0
Abstract: 

This research aimed to study and compare accuracy of three geo-statistical methods (kriging, co-kriging, and inverse distance weighting) in order to estimate some soil properties, and determine the effect of sampling density on variogram parameters. This study was conducted in Laghar plain in south of Fars province with an area of 12986 hectares. Soil particle size percentage, calcium carbonate equivalent, gypsum percentage, mottling distribution, and soil saturated hydraulic conductivity were measured and studied and zoned based on the most appropriate model. Then, suitable interpolation and evaluation methods as well as suitable interpolator were selected. The results showed that the kriging estimator was better and had less error than the inverse distance weighting and co-kriging methods for interpolating saturated hydrolytic conductivity, mottling, and gypsum percentage. To interpolate sand, silt and clay percentage parameters, the inverse distance weighting method had better results than the other two methods and was preferred. To interpolate calcium carbonate percentage, the co-kriging method presented better results than the kriging and inverse distance weighting methods. Sampling density effect on variogram parameters was studied too. In the first level, all samples (80 samples) and, in the second level, 40 samples were randomly selected and considered for determining variogram and interpolation. According to the results, there was no regular change in values of variogram parameters, but increase in nugget effect could be observed in most of the studied properties.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 503

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesCitation 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesRefrence 0
Issue Info: 
  • Year: 

    2016
  • Volume: 

    30
  • Issue: 

    4
  • Pages: 

    475-486
Measures: 
  • Citations: 

    0
  • Views: 

    409
  • Downloads: 

    0
Abstract: 

In recent years, use of sewage sludge as a fertilizer has become prevalent in agricultural lands, because of being cheap. Sewage sludge is a source of nutritional elements, however, it contains some heavy metals. A study was conducted to evaluate the effect of incubation time, sewage sludge, and Thiobacillus bacteria on the distribution of cadmium in a calcareous soil. For this purpose, an experiment with three levels of sewage sludge (0, 50, and 100 t ha-1), two levels of bacteria (with and without), three incubation times (0, 30, and 60 days) was carried out. The experiment was conducted in three replications in controlled conditions using factorial arrangement with a completely randomized design. The samples were incubated for two months at temperature of 25± 2 ° C and soil moisture condition close to field capacity. Distribution of Cd in fractions including soluble+ exchangeable, organically bound, carbonate-bound, and residual fractions was determined by a sequential extraction method. The results illustrated that residual and carbonate form of Cd were dominant and showed a significant change with sewage sludge treatment and time. Sewage sludge application increased the amount of fractions of cadmium significantly in the calcareous soil. The proportion of residual and carbonat-bound Cd was higher in soil with and without bacteria. In soil withThiobacillus thiooxidans bacteria, the percentage of Cd in the carbonate and organic fractions decreased and the percentage of Cd increased in other fractions. Carbonate fraction of Cd was significantly higher in 60 days than 0 and 30 days. The organic forms of Cd decreased significantly in the course of time. In general, based on the results, it may be concluded that sewage sludge, Thiobacillus thiooxidans bacteria, and time treatment play a key role in the distribution of Cd in different fractions of soils.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 409

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesCitation 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesRefrence 0
Issue Info: 
  • Year: 

    2016
  • Volume: 

    30
  • Issue: 

    4
  • Pages: 

    487-496
Measures: 
  • Citations: 

    0
  • Views: 

    622
  • Downloads: 

    0
Abstract: 

Potassium and iron as essential plant nutrients play important role in growth and development of plants. However, in most agricultural areas of the world, deficiency of available iron in the soil is prevalent and it is expected to be intensified by increasing the lime content in soil, while insufficiency of available potassium in the soil occurs due to fixation, runoff, leaching, and erosion. Potassium solubilizing bacteria have the capacity to dissolve potassium from insoluble K minerals. This research was carried out to dissolve iron and potassium from insoluble minerals by rhizospheric bacteria. The experiment was done as factorial with completely randomized design. Treatments included minerals (muscovite and vermiculite) and four strains of potassium releasing bacteria including Enterobacter cloacae (R33 and E1 strains) and Pseudomonas putida (R9 and E49 strains) and the control (without inoculation) during three time periods (7, 14 and 28 days). Aleksandrov broth medium containing 2 grams of each mineral was used in order to study iron and potassium release. The results showed significant (p<0. 01) interaction effects of strains, minerals, and period of incubation on iron release and also significant (p<0. 01) interaction effects of strains and minerals on potassium release. Highest potassium solubilization belonged to vermiculite in the presence of E. cloacae R33 and the lowest amount was in the presence of P. putida E49. Highest iron release was from vermiculite in the presence of E. cloacae R33. In general, the release of iron and potassium from vermiculite was more than muscovite. The pH of the medium was reduced significantly at the presence of all strains and minerals, in comparison to the control. Thus, we can use E. cloaese R33 as an efficient bacterium to release potassium and iron in the future research.

Yearly Impact: مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

View 622

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesDownload 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesCitation 0 مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic ResourcesRefrence 0
telegram sharing button
whatsapp sharing button
linkedin sharing button
twitter sharing button
email sharing button
email sharing button
email sharing button
sharethis sharing button