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 27 (2013)
Volume 26 (2012)
Volume 25 (2011)
Volume 24 (2010)
Volume 23 (2009)
Volume 22 (2008)
Research Article
Evaluation Yield of Sunflower (Farrokh cultivar) under Effects of Conventional Deficit Irrigation and Partial Root Zone Drying

A Rezaei Estakhroeih; S. Khoshghadam; M. Ebrahimi Serizi; A. Badiehneshin

Volume 28, Issue 5 , November and December 2015, Pages 867-875


  Water shortage is the most important factors on crop production in the world. Several methods of deficit irrigation are solutions for reduction of irrigation water. To understand the effects of conventional deficit irrigation and partial root zone drying treatments on yield, yield components and water ...  Read More

Research Article
Evaluation Yield of Sunflower (Farrokh cultivar) under Effects of Conventional Deficit Irrigation and Partial Root Zone Drying

H. Ahmadzadeh; saeed morid; M. Delavar

Volume 28, Issue 5 , November and December 2015, Pages 876-889


  Streamflows, actual evapotranspiration and crops’ yield are the main variables to estimate agricultural water productivity. Thus, simulation of these variables is of great importance in evaluation of different measures to increase water productivity. For this, application of conceptual models is a ...  Read More

Research Article
The Effects of Two Different Deficit Irrigation Managements on the Root Length of Maize

M. Gheysari; M.M. Majidi; seyed majid mirlatifi; M.J. Zareian; S. Amiri; S.M. Banifatemeh

Volume 28, Issue 5 , November and December 2015, Pages 890-898


  The response of root to water stress is one of the most important parameters for researchers. Study of growth and distribution of root under different irrigation managements helpsresearchersto a better understanding of soil water content, and the availability of water and nutrition in water stress condition. ...  Read More

Research Article
Sensitivity Analysis of Different Infiltration Equations and Their Coefficients under Various Initial Soil Moisture and Ponding Depth

ali javadi; M. Mashal; M.H. Ebrahimian

Volume 28, Issue 5 , November and December 2015, Pages 899-908


  Infiltration is a complex process that changed by initial moisture and water head on the soil surface. The main objective of this study was to estimate the coefficients of infiltration equations, Kostiakov-Lewis, Philip and Horton, and evaluate the sensitivity of these equations and their coefficients ...  Read More

Research Article
Uncertainty Analysis in Prediction of Soil Water Balance Components in two Irrigated Field in Arid Region

M. Shafiei; B. Ghahraman; B. Saghafian; K. Davary; M. Vazifedust

Volume 28, Issue 5 , November and December 2015, Pages 909-917


  Uncertainty analysis is a useful tool to evaluate soil water simulations in order to get more information about the models output. These information provide more confidence for decision making processes. In this study, SWAP model is applied for soil water balance simulations in two fields which are planted ...  Read More

Research Article
Investigation the Possibility of Using Saline Water in Drip Irrigation for Lands Sustainability

M. Hassanli; H. Ebrahimian; M. Parsinejad

Volume 28, Issue 5 , November and December 2015, Pages 918-929


  Using of saline water for irrigation of crops is known as a strategy of on-farm irrigation water management. In this study, the cyclic using of saline and fresh water and its effect on soil salinity were investigated. Field experiments were carried out in randomized complete block design under drip irrigation ...  Read More

Research Article
Simulation of Rainfed Wheat Yield using AquaCrop Model, Case Study: Sisab Rainfed Researches Station, Northern Khorasan

N. Khalili; K. Davary; A. Alizadeh; M. Kafi; H. Ansari

Volume 28, Issue 5 , November and December 2015, Pages 939-9030


  Modeling of crop growth plays an important role in evaluation of drought impacts on rainfed yield, choosing an optimum sowing date, and managerial decision-makings. Aquacrop model is a new crop model that developed by Food and Agriculture Organization (FAO), that is a model for simulation of crop yield ...  Read More

Research Article
Effect of Water Deficit Stress on Peach Growth under Commercial Orchard Management Conditions

M. Rahmati; Gh. Davarynejad; Mohammad Bannayan Aval; M. Azizi

Volume 28, Issue 5 , November and December 2015, Pages 940-950


  In order to study the sensitivity of vegetative growth to water deficit stress of a late-maturing peach (Prunus persica L. cv. Elberta) under orchard conditions, an experiment was conducted as randomized complete-block design with three treatments and four repetitions in Shahdiran commercial orchard ...  Read More

Research Article
Effect of Super Absorbent Polymer Aquasorb on Growth, Establishment and Some Physiological Charactereistics of Acacia victoriae Seedlings Under Drought Stress

Afsaneh Tongo; A. Mahdavi; E. Saiad

Volume 28, Issue 5 , November and December 2015, Pages 951-963


  To study the effect of Aquazorb super absorbent polymer (SAP) on reducing Drought stress of Acacia victoriae seedling, a split plot experiment based on the completely randomized design was conducted. In this research, stressed treatment as the main plots and amount of superabsorbent were considered as ...  Read More

Research Article
Effect of Rangeland Fire on Soil Physical Properties and Water Infiltration Parameters using Principle Component Analysis

J. heidary; Sh. Ghorbani Dashtaki; F. Raiesi; Pejman tahmasebi

Volume 28, Issue 5 , November and December 2015, Pages 964-975


  Annual fires might change many soil physical properties in semi steppe rangeland.The objective of this study was to investigate the impact of fire on soil physical properties and soil water infiltration parameters in semi-steppe rangeland of Karsanak region in Chaharmahal and Bakhtiari province. Therefore, ...  Read More

Research Article
Effect of Pseudomonas and Bacillus bacteria on Yield and Nutrient Uptake in Comparison with Chemical and Organic Fertilizers in Wheat

A. Fallah Nosrat Abad; Sh. shariati

Volume 28, Issue 5 , November and December 2015, Pages 976-986


  The high cost of fertilizers in farming systems, soil pollution and degradation of soil are factors that caused to full use of available renewable nutrient sources of plant (organic and biological) with optimal application of fertilizers in order to maintain fertility, structure, biological activity, ...  Read More

Research Article
Identification and Purification of Montmorillonite Mineral of Ghaen Mine Bentonite

P. Mirhoseini Moosavi; A. Astaraei; Ali reza Karimi; Gh. Karimi

Volume 28, Issue 5 , November and December 2015, Pages 987-997


  Montmorillonite is the major mineral of Bentonite with many applications in industrial fields but some impurities decreases the quality of the bentonite. The main objective of this study was to investigate the suitable method for purification of Ghaen mine bentonite. A combination of methods was considered ...  Read More

Research Article
3D Digital Mapping of Soil Cation Exchange Capacity in Dorud, Lorestan Province

R. Taghizadeh Mehrjerdi; A. Amirian Chekan; F. Sarmadian

Volume 28, Issue 5 , November and December 2015, Pages 998-1010


  There is an increasing demand for reliable large-scale soil datato meet the requirements of models for planning of land-usesystems, characterization of soil pollution, and prediction ofland degradation. Cation exchangecapacity (CEC) is among the most important soil propertiesthat are required in soil ...  Read More

Research Article
The Comparison of Micromorphological properties of Saline – Sodic and Nonsaline-Nonsodic Soils around the Urmia Lake

S. chakherloo; Sh. Manafi; A. Heidari

Volume 28, Issue 5 , November and December 2015, Pages 1011-1024


  In order to comparision of the micromorphic properties of saline-sodic and nonsaline-nonsodic soils in the west of Urmia Lake, four soil profiles (2profile in saline-sodic soils and 2profiles in nonsaline-nonsodic soils) were investigated. These profiles were described and sampled using standard methods. ...  Read More

Research Article
Digital Mapping of Soil Texture Using Regression Tree and Artificial Neural Network in Bijar, Kurdistan

kamal nabiollahi; ahmad haidari; rohollah taghizade mehrjardi

Volume 28, Issue 5 , November and December 2015, Pages 1025-1036


  Soil texture is an important soil physical property that governs most physical, chemical, biological, and hydrological processes in soils. Detailed information on soil texture variability is crucial for proper crop and land management and environmental studies. Therefore, at present research, 103 soil ...  Read More

Research Article
The Application of ANN for Downscaling GCMs Outputs for Prediction of Precipitation in Across Southern Iran

Nooshin Ahmadibaseri; A. Shirvani; mohammad jafar nazemosadat

Volume 28, Issue 5 , November and December 2015, Pages 1037-1047


  In this study, the artificial neural networks (ANNs) and regression models were used to downscale the simulated outputs of the general circulation models (GCMs). The simulated precipitation for 25.18 º N to 34.51 º N and 45 º E to 60 º E, geopotential height at 850 mb and zonal wind at 200 mb for ...  Read More

Research Article
Application of Viterbi’s Algorithm for Predicting Rainfall Occurrence and Simulating Wet\Dry Spells – Comparison with Common Methods

M. Ghamghami; J. Bazrafshan

Volume 28, Issue 5 , November and December 2015, Pages 1048-1060


  Today, there arevarious statistical models for the discrete simulation of the rainfall occurrence/non-occurrence with more emphasizing on long-term climatic statistics. Nevertheless, the accuracy of such models or predictions should be improved in short timescale. In the present paper, it is assumed ...  Read More

Research Article
Determine of Homogeneous Regions Distribution of Annual Rainfall in Golestan Province Using Clustering and L-moments

N. Hasanalizadeh; A. Mosaedi; Abdolreza Zahiri; M. Babanezhad

Volume 28, Issue 5 , November and December 2015, Pages 1061-1071


  Characteristics of precipitation and the regionalization major role in the efficient use of water resources and soil and management of environmental hazards. Regionalization of rainfall can help to better use of water resources and to correct manage of environmental hazards. According to the analysis ...  Read More

Research Article
Formation of Heavy Precipitations in Southwestern Part of Iran and its Association with the Madden-Julian Oscillation

mohammad jafar nazemosadat; K. Shahgholian

Volume 28, Issue 5 , November and December 2015, Pages 1072-1083


  The aim of this study is to assess some synoptic characteristics of heavy precipitations in southwestern parts of Iran and evaluate the relationship between them with the Madden-Julian Oscillation (MJO). Research is conducted with regard to distribution of precipitation per month and identifying their ...  Read More