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
Water Table Fluctuation, Drainage Rate and Nitrogen Dynamic in the Farms of Sugarcane Cropping with Controlled Drainage System

A. Sadeghilari; Hadi Moazed; AbdAli Naseri; A. Mahjobi; A.M. Liaghat

Volume 27, Issue 6 , January and February 2014, Pages 1077-1089


  In arid and semiarid regions, controlled drainage is the next logical step towards improving water management in irrigated agriculture and reducing the environmental impacts of subsurface drainage flow. Controlled drainage has been practiced in humid areas for a long time. In this research a controlled ...  Read More

Research Article
The Effect of Aspergillus Isolates on Hydrolysis of Soil Organic Phosphorus (Phytic Acid and Sodium Glycerophosphate)

T. Javaheri; A. Lakzian; P. Taheri; R. Khorasani

Volume 27, Issue 6 , January and February 2014, Pages 1090-1099


  Organic phosphorus is the dominant part of soil phosphorus. Phytic acid and sodium Glycerophosphate are two different forms of soil organic phosphorus. Soil fungi play an important role in the conversion of these compounds into inorganic forms. Among the fungi, Aspergillus is one of the most effective ...  Read More

Research Article
Effect of Sewage Sludge Application and Wheat (Triticum aestivum L.) Planting on Availability and Fractionation of Zinc in some Calcareous Soils

alireza hosseinpuor; H.R. Motaghian

Volume 27, Issue 6 , January and February 2014, Pages 1100-1110


  The amount of available micronutrients such as zinc (Zn) is a primary concern in treated soils with sewage sludge. This study was performed to evaluate Zn availability (DTPA-TEA, Mehlich 1 and Mehlich 3) and its fractionation in soils before and after treated with sewage sludge (1% w/w) and after wheat ...  Read More

Research Article
Potentiality of Susceptible Regions for Pressurized Irrigation Systems Implementation Using GIS (Case Study: Babakhan Irrigation and Drainage Network)

M.M. Gharahdaghi; E. Maroufpoor; Kh. Babaei; F. Mansouri

Volume 27, Issue 6 , January and February 2014, Pages 1111-1122


  Successful pressurized irrigation system accomplishment in a region is related to factors such as climatic conditions, water quality, topography condition, soil specifications, production variety and socio-economic factors. In this study a procedure has been expanded and introduced to scoring the effective ...  Read More

Research Article
Using Fractal Interpolation Functions for Temporal Downscaling of Temperature Data

N. Validi; Alinaghi Ziaei; B. Ghahraman; H. Ansari

Volume 27, Issue 6 , January and February 2014, Pages 1123-1132


  For optimal management of a catchment, the time and space downscaling of hydrological properties is essential. To achieve accurate energy and water budget equations in every time or space resolution, spatial and temporal downscaled information of water budget's components are used. The fractal geometry ...  Read More

Research Article
Effect of Controlled Drainage on Reducing Drainage Coefficient and Drainage Volume in Sugarcane Fields of Imam Khomeini Agro- industry

A. Mahjoubi; A. Hooshmand; AbdAli Naseri; S. Jafari

Volume 27, Issue 6 , January and February 2014, Pages 1133-1144


  Sugarcane is one of the high consumption plants that has very high drainage coefficient. Irrigation frequency of Sugarcane in the maximum of consumption month is near 5 days and drainage systems often are removing drain water more than enough from the soil. This study was carried out to investigate the ...  Read More

Research Article
Impact of Different Irrigation Levels, Plant Density and Row Spacing on Water Productivity of Corn Using Subsurface Drip Irrigation

H. Afshar; Hossin Sadrghaen

Volume 27, Issue 6 , January and February 2014, Pages 1145-1152


  In areas with limited water resources, one of the main goals of irrigation is to maximize the water per unit volume. In corn planting two major options for increasing of water productivity are plant density and growing pattern. In order to achieve the above goal in Corn” Karaj 700”, an study was ...  Read More

Research Article
Long-Term Effects of Mechanized Cultivation on Some Soil Physical Properties in Some Khozestan Sugarcane Agro-Industries

F. Moradi; B. KhaliliMoghadam; S. Jafari; S. Ghorbani Dashtaki

Volume 27, Issue 6 , January and February 2014, Pages 1153-1165


  The objective of this study was to evaluate the long-term effects of mechanized sugarcan cultivation on some soil physical properties in several lands of Khozestan Sugarcane Agro-Industries. According to this, the experiment was carried out statistically as a randomized complete block design at 38 points ...  Read More

Research Article
Efficiency of Phosphorus Removal by Modified Zeolite in Drain Flow Conditions in Agricultural Drainage

F. Zadjanali Choubari; M. Navabian; M. Vazifehdust; M. Esmaeili Varaki

Volume 27, Issue 6 , January and February 2014, Pages 1166-1175


  Phosphorus is one of the main pollutants of agricultural surface drainage; that over standard doze of it cause eutrophication in surface water resource. This study investigates evaluation the ability of Semnan's zeolite, that modified by hexadecyltrimethylammonium, to removal phosphorus under flow conditions ...  Read More

Research Article
Investigation and Determination Threshold and Rainy Season Length for Different Locations of Northeast of Iran (Khorasan Province)

mohammad banayan

Volume 27, Issue 6 , January and February 2014, Pages 1176-1189


  Detection of rainfall characteristics in arid and semi-arid regions such as northeast of Iran has a critical role in any adaptation and mitigation plan to drought. The main goal of this study was to determine the rainy season starting date and daily rainfall threshold by using Rainfall Uncertainty Evaluation ...  Read More

Research Article
Modeling Plants Yield Based on Climatic Factors and Drought Indices in Selected Sites of the Provinces of Markazi and Qom in Iran

abolfazl Mosaedi

Volume 27, Issue 6 , January and February 2014, Pages 1190-1206


  Prediction of precise forage production and proper management strategies requires identifying key climatic factors in different regions. The objective of this research is to compare forage production in different region based on climatic factors and drought indices. The study sites include Arak, Roudshore, ...  Read More

Research Article
Calibration of Methods to Estimating Stage - Discharge Relation in Hydrometry Stations in the Qarasu River Basin

Ensyeh merati

Volume 27, Issue 6 , January and February 2014, Pages 1216-1224


  Since measuring the flow discharge is difficult during a flood event in a hydrometry station, the estimated Stage–discharge relationship of non-flood conditions is extrapolated for flood conditions. Hence the results might show underestimated values. Indeed during the flood bed form is developed and ...  Read More

Research Article
The Evaluation of Uptake of Cd and Zn by Gladiola, Narcissus and Tulip

Ghasem Rahimi

Volume 27, Issue 6 , January and February 2014, Pages 1207-1215


  In order to assess uptake potential of Cd an Zn by Gladiola, Narcissus and Tulip, the greenhouse study was performed in contamination soils as factorial arrangement based on the complete randomized design with different levels of pollution (A as higher pollutant, B as lower pollutant and C as no pollutant) ...  Read More

Research Article
The Impacts of Climate Change on Runoff in Watersheds (Case Study: Ajichay Watershed in East Azerbaijan Province, Iran)

hadi sanikhani; yaghoub dinpazhoh; sarvin zamanzad ghavidel

Volume 27, Issue 6 , January and February 2014, Pages 1225-1234


  Changes in temperature and precipitation patterns have serious impacts on the quantity and quality of water resources, especially in arid regions such Iran. In recent years, frequent droughts have threatened the water resources in Iran. Because of the increasing demand for water, studying the impacts ...  Read More

Research Article
Anticipation of Comfortable Climate Traits in Abadan City with Using from Analysis of Time Series

mohammadreza golabi; ali mohammad akhondali

Volume 27, Issue 6 , January and February 2014, Pages 1235-1246


  During the last decades, urbanization expansion and industrial activities in large cities have led to remarkable changes in weather and local climate. Nowadays, analysis of meteorology data and also using them in programming the development of habitation centers are of importance and climate situation ...  Read More

Research Article
Impact of Climate Change on Water Resources on Simineh Rud Basin and Its Inflows to Lake Urmia

mostafa rezaee; saeed morid

Volume 27, Issue 6 , January and February 2014, Pages 1247-1259


  Lake Urmia is faced with problematic drawdown trend in the recent years that climate change can exacerbate this phenomena. This research work applies HadCM3 climate change data (scenarios A2 and B2) for the period of 2010-39 to evaluate changes in temperature and rainfall of the basin. To downscale these ...  Read More

Research Article
Evaluation of Eutrophication in the Ilam Reservoir Using Fuzzy Approach
Volume 27, Issue 6 , January and February 2014, Pages 1260-1269


  Assessing the level of reservoir’s Eutrophication has been regarded as one of the main issues in the water quality management by managers and policy makers. Estimating the eutrophication level is not possible by a determined method and complete certainty with respect to the high complexity of this ...  Read More

Research Article
Estimating Width of the Stable Channels Using Multivariable Statistical Based Empirical Equations

neda yousefi; Saeed Reza Khodshenas

Volume 27, Issue 6 , January and February 2014, Pages 1270-1280


  Predicting behavior and the geometry of the channels and alluvial rivers in which the erosion and sediment transport are in equilibrium is one of the most important topics in river engineering. Various researchers have proposed empirical equations to estimate stable river width (W). Empirical equations ...  Read More

Research Article
Optimization of Furrow Irrigation Performance using WinSRFR under Furrow Firming Conditions of Sugarbeet Cultivation

vahid Rezaverdinejad

Volume 27, Issue 6 , January and February 2014, Pages 1281-1293


  In order to investigate impactes of furrow firming on furrow irrigation performance, a field experiment was conducted during Sugarbeet growing season in Nagadeh. Four furrow irrigation treatment of furrow firming includes B1: furrow firming with once roller, B2: furrow firming with twice roller, B3: ...  Read More