Volume 38 (2024)
Volume 37 (2023)
Volume 36 (2022)
Volume 35 (2021)
Volume 34 (2020)
Volume 33 (2019)
Volume 32 (2018)
Volume 31 (2017)
Volume 30 (2016)
Volume 29 (2015)
Volume 28 (2014)
Volume 26 (2012)
Volume 25 (2011)
Volume 24 (2010)
Volume 23 (2009)
Volume 22 (2008)
Research Article
Variations of Water Table Profile and Outflow of Bi-level Drains in a Layered Soil

S. Hamzeh; AbdAli Naseri; H.A. Kashkuli

Volume 27, Issue 1 , March and April 2013, Pages 1-13


  Two issues of the drainage systems which are less studied in the literature are drainage in layered soils and bi-level derange systems. Hence, it is necessary to do more research in these topics. Therefore the present study was carried out under above conditions in the Imam Khomeini Farming and Industrial ...  Read More

Research Article
The Effect of Biosolids (Sewage Sludge, Urban Compost, Manure) On Soil Chemical Properties and Bioavailability of Micronutrients (zinc, iron) by Corn in two Calcareous Soils n)

A. Abtahi; M. Hoodaji; M. Afyuni

Volume 27, Issue 1 , March and April 2013, Pages 14-23


  The objectives of this research were to study the effect of three kinds of biosolids applications such as urban compost, sewage sludge, cow manure and chemical fertilizers (sulphates of Zn, Fe) concentration on soil and corn plant. Two calcareous soils having different textures (sandy loam and clay loam) ...  Read More

Research Article
Effect of Different Cadmium Concentrations on Growth of Eisenia fetida in a Calcareous Soil

R. Jenabi Haghparast; A. Golchin; E. Kahneh

Volume 27, Issue 1 , March and April 2013, Pages 24-35


  Heavy metals are entered to the environment by mining and by applying sewage sludge and agricultural inputs to soils. These metals have detrimental effects on environment and soil organisms. An experiment was conducted to determine the cadmium affects on earthworms (Eisenia fetida) in a calcareous soil ...  Read More

Research Article
Economical Land Suitability Evaluation for Maize Around Shahrekord City, Using ALES Program

J. Givi; A. Abedi

Volume 27, Issue 1 , March and April 2013, Pages 36-44


  Economical profit is one of the important factors, persuading farmers to plant a specific crop. So, in addition to qualitative and quantitative land suitability evaluation, economical one can be carried out as well, based on net or gross profit per surface area unit. The present research was done to ...  Read More

Research Article
Soil Fertility Evaluation of Ardabil Plain for Wheat and Potato Based on some Soil Chemical Properties by AHP and GIS Techniques

Z. Lotfi Arpachaei; Abazar Esmali; kazem hashemimajd; n n

Volume 27, Issue 1 , March and April 2013, Pages 45-53


  In modern agriculture, the preparation of soil fertility map seems to be necessary to plan for appropriate using of fertilizers for crops. This study was conducted to prepare a distinct map for evaluating soil fertility according to soil chemical properties in 136 soil samples of Ardabil plain in Ardabil ...  Read More

Research Article
Evaluation of the N2-fixing Ability of Rhizobia Strains in Common Bean Cultivated Region of Qazvin

M.A. Khalaj; F. Moshiri; Hadi Asadi Rahmani

Volume 27, Issue 1 , March and April 2013, Pages 54-60


  This study was conducted to evaluate N2-fixing ability of rhizobia strains inoculated with common bean. The experiment was carried out in a randomized complete block design (RCBD) with 13 treatments including 10 Rhizobium isolates, two nitrogen fertilizer levels (200 and 400 kg urea per ha) and one control ...  Read More

Research Article
Application of Isotope Trace Technology in the Management of Nitrogen Fertilizer to Improve Sugar Productivity of Sugar Beet Plant under Different Irrigation Systemsr

M.A. Mousavi Shalmani; A. Khorasani; N. Pirvali Bieranvand; M. Noori Mohammadiye; A. Eskandari; S.M. Mohati

Volume 27, Issue 1 , March and April 2013, Pages 61-69


  Nitrogen (N) is the most usually used crop nutrient which represent importance of the efficient use of nitrogen fertilizers. At this study, the optimum fertilizer application pattern by using of 15N isotope technique in different irrigation systems and the influence of the fertilizer application time ...  Read More

Research Article
The Effect of Different amounts Wastewater Sludge Application on Soybean Yield and Nitrate Concentration in Shallow Depth Drainage Water

A. Hassanoghli

Volume 27, Issue 1 , March and April 2013, Pages 70-79


  Produced sludge from wastewater treatment plants is a source of macro and micro nutrients and organic matters which is needed for agriculture. On the other hand, application of sludge with no criterion may cause some health risks and also, soil and surface water and ground water resources pollution may ...  Read More

Research Article
Regional Frequency Analysis of Annual Maximum 1-day And 2-day Rainfalls Using Clustering And L-moments, Case study: Khorasan Razavi Province

mehri shahedi; S.H. Sanaiinejad; B. Ghahreman

Volume 27, Issue 1 , March and April 2013, Pages 80-89


  The purpose of this study is regional frequency analysis of Annual Maximum 1-day Rainfall (AM1R) and Annual Maximum 2-day Rainfall (AM2R) using L-moments theory in Khorasan Razavi Province. For this purpose, the basic statistical tests include: homogeneity, independency and outlier data for AM1R and ...  Read More

Research Article
Evaluation of the Ability of LVQ4a2 Artificial Neural Network Model to Predict the Spatial Distribution Pattern of Cadmium in Soil

H. Ghorbani; A. Roohani; N. Hafezi Moghaddas

Volume 27, Issue 1 , March and April 2013, Pages 90-102


  In this research, a learning vector quantization neural network (LVQ) model was developed to predict and classify the spatial distribution of cadmium in soil in Golestan province. The cadmium data were obtained from soils measuring total Cd contents in soil samples. Some statistical tests, such as means ...  Read More

Research Article
The Role of Rice Straw and Zeolite Cracked Paddy Soil Improvement

M. Alizadeh; F. Mirzaei; T. Sohrabi; M. Kavoosi; M.R. Yazdani

Volume 27, Issue 1 , March and April 2013, Pages 103-112


  Water management in cracked paddy soils is an important issue in rice cultivation. In order to investigate the effect of rice straw and zeolite and their interaction effect on the physical condition of soils of paddy fields and prevention of crack, rice straw factor at four levels (0, 0.5, 1 and 1.5 ...  Read More

Research Article
Evaluation of Several Chemical Extractants to Deterministic Phosphorus Availability for Bean (Phaseolus vulgaris) in Some Calcareous Soils

T. Raiesi; A. Hosseinpur; F. Raiesi

Volume 27, Issue 1 , March and April 2013, Pages 113-122


  The objective of the present study was to evaluate several chemical extractants to estimate available phosphorus (P) for bean growing in calcareous soils from Chaharmahal-Va-Bakhtiari province. The amount of available P was measured by Olsen, Colwell, ammonium bicarbonate-DTPA, 0.01 M calcium chloride, ...  Read More

Research Article
An Investigation of the Effect of Two Drainage Envelope Types on Subsurface Drainage Flow Rates in Paddy Fields of Mazandaran Province

A. Shahnazari; Mirkhaleg Ziatabar Ahmadi

Volume 27, Issue 1 , March and April 2013, Pages 123-130


  One of the important components of suitable operation of subsurface drainage systems is its envelope. Several researchers have evaluated the efficiency of dry land drainage, but the operation of these materials in subsurface drainage systems of paddy fields has not been investigated. In this research, ...  Read More

Research Article
The Impact of ENSO Event on Reference Crop Evapotranspiration Variability in Some Typical Cold Climates of Iran

A.A. Sabziparvar; S. Tanian

Volume 27, Issue 1 , March and April 2013, Pages 131-144


  The main aim of this research is investigating the effect of ENSO phenomenon on reference evapotranspiration (ET0) on monthly, seasonal and annual time scales, using Southern Oscillation Index (SOI). For this purpose, 13 sites located in cold climate regions with 50 years (1957-2006) meteorological data ...  Read More

Research Article
A new Analytical Method for Estimating Soil Moisture Characteristic Curve using Horizontal Infiltration Data in Soil Column

A.A. Zolfaghari; Mehdi Shorafa; M.H. Mohammadi; A. Liaghat; A. Hoorfar; manoochehr gorji

Volume 27, Issue 1 , March and April 2013, Pages 145-157


  Quantitative knowledge of soil hydraulic properties such as the soil moisture characteristics curve (SMC) is crucial for flow and transport modeling supporting hydrologic and agricultural engineering. However, many laboratory and field methods are currently available for direct measurement of the soil ...  Read More

Research Article
Evaluation of Hybrid Model for Estimating Daily Solar Radiation in Some Solar Sites of Iran

M. Erfanian; S. Babaei Hesar

Volume 27, Issue 1 , March and April 2013, Pages 158-168


  Short wavelength of solar radiation that reaches the ground used as one of the key parameters in most models those estimate the potential Evapotranspiration, such as FAO Penman-Monteith. Despite the importance of amount of radiation, its measurement is done only in small number of stations in the country. ...  Read More

Research Article
Physicochemical Properties and Micromorphology of Pistachio Orchards Compared to Adjacent Non-cultivated Soils in Bayaz Area

F. Nourmandipour; Mohammad Hady Farpoor; M. Sarcheshmehpour

Volume 27, Issue 1 , March and April 2013, Pages 169-179


  Crop management and irrigation water quality play an important role on soil properties. The present research aimed to study physicochemical properties and micromorphology of soils under pistachio orchards compared to non-cultivated adjacent soils. Four water samples with different Mg/ca ratios were selected ...  Read More

Research Article
Estimation and Mapping Soil Organic Carbon content using Terrain Analysis(Case study: Mashhad, Iran)

A. Lakzian; M. Fazeli Sangani; Alireza Astaraei; A. Fotovat

Volume 27, Issue 1 , March and April 2013, Pages 180-192


  This study was conducted to evaluate using terrain attributes derived from digital elevation model (DEM) as ancillary data to predict soil organic carbon (SOC) by implementing different statistical and geostatistical techniques. A linear regression model (LR), Artificial Neural Network model (ANN), ordinary ...  Read More

Research Article
An Artificial Neural Network Model for Estimating Fluvial Suspended Sediment Concentration Using MODIS Sensor Images (Case Study: Mollasani Hydrometric Station, Khouzestan Province)

M.R. Tabatabaei; K. Shahedi; karim solymani

Volume 27, Issue 1 , March and April 2013, Pages 193-204


  The estimation of suspended sediment load is very important for water resources quantity and quality studies. The suspended sediment load is generally calculated by direct measurement of suspended sediment concentration (SSC) of a river or by using sediment rating curve (SRC) method. Direct measurement ...  Read More

Research Article
The Effect of Super Absorbent A200 on the Infiltration Parameters

Hossein Sharifan; P. Mokhtari; A. Hezarjaribi

Volume 27, Issue 1 , March and April 2013, Pages 205-212


  By considering the shortage of water resources in our country and dominant share of agriculture in making use of these resources, economizing and saving in this sector and using management practices for raising the efficiency of water consumption is necessary and essential. Super absorbent polymers, ...  Read More

Research Article
Predicting Potential Evapotranspiration Using Time Series Models(Case Study: Urmia)

J. Behmanesh; M. Montaseri

Volume 27, Issue 1 , March and April 2013, Pages 213-223


  Potential evapotranspiration is one of the most important and effective factors for optimizing agricultural water consumption and water resources management. One of methods for prediction of evapotranspiration is to use the time series models. In this research, application of different time series models, ...  Read More

Research Article
Study of Hydraulic Features of Flow Over Labyrinth Weir with Semi-circular Plan form

M. Esmaeili Varak; M. Safarrazavi Zadeh

Volume 27, Issue 1 , March and April 2013, Pages 224-234


  Weirs are common structure to regulate water surface and flow control in water conveyance channel and hydraulic structure. One of effective and economical method to increase the efficiency of weirs is utilization of labyrinth weirs which length of weirs increase with modification of plan form and therefore ...  Read More

Research Article
A Comparison of using Turbulence Models in Simulating Hydraulic Jump in Diverging Rectangular Sections with Fluent Software

F. Sahebi Vayghan; Davoud Farsadi; M. Esmaeili Varaki; A. Abbaspour; Ali hosseinzadeh

Volume 27, Issue 1 , March and April 2013, Pages 235-246


  Stilling basins are one of the most common structures for energy dissipation of flow with high velocity and among different sections and types of these basins, diverging basins have better performance and lower constructional costs. In this research, the feasibility of 3D numerical simulation of diverging ...  Read More

Research Article
Effect of Wetting and Drying Cycles on Compaction Curve and Evaluation Methods for Estimating Compactibility of a Coarse Textured Soil

M. Salehian Dastjerdi; A. Hemmat

Volume 27, Issue 1 , March and April 2013, Pages 247-256


  Wetting and drying induce stresses in soil which changes the physical structure of the soil. For this reason, the effect of this process on evaluating the methods for estimating the threshold of compactibility (load-bearing capacity, pre-compaction stress) of a coarse textured soil (sandy loam) collected ...  Read More