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Articles by M. Behzad
Total Records ( 6 ) for M. Behzad
  O. Bahmani , S.B. Nasab , M. Behzad and Abd Ali Naseri
  Nitrate and ammonium leaching from agricultural soil can represent a substantial loss of fertilizer nitrogen (N), but a large variation in losses has been reported. The objectives of this study were to assess the accumulation of NO3¯-N and NH4+-N in the soil profile over a 1-year period under different irrigation and fertilization conditions in sugarcane area of the Khuzestan, Iran. Three irrigation and fertilizer treatments were applied. The first treatment I1 is consisted of full irrigation and others I2 and I3 were 80 and 75% of I1, respectively. N application consist of (N1) 150, (N2) 250 and (N3) 350 kg ha-1. Soil samples were collected from field plots in 0.3 m depth increments to 1.2 m on a periodic basis. NO3¯N values increased with rise of fertilizer consuming and decreasing of water application. It depended to NH4+-N transformation and irrigation regimes. In all treatments, NH4+-N decreased from the surface to 120 cm depth. Maximum concentration of NO3¯N and NH4+-N accrued in I3N3 and I2N3 treatments respectively. This study showed that the moisture was the important parameter because nitrification and denitrification dependent on it and had a direct relationship to nitrate and ammonium accumulation in soil profile.
  M. Behzad , M. Albaji , P. Papan , S. Boroomand Nasab , A.A. Naseri and A. Bavi
  Here a land suitability evaluation study for key productions of the region, including wheat, alfalfa, maize and barley, covering an area of 15831 ha was carried out in the region. Using the findings of the semi-detailed soil studies for this area, 2 soil families and 8 soil series in 2 physiographic units was identified. Physiologic requirements of each crop were also determined and rated based upon the proposed methods (Parametric methods and Simple limitation method). Qualitative evaluation was carried out by means of simple limitation and parametric methods (Storie and Root Square Method) and comparing land and climate characteristics with crop needs. The index obtained for barley, wheat and alfalfa was higher in comparison to that developed for maize. Limiting factors in different crop yield in the region along with climatic variables included soil physical properties, especially its carbonate contents, soil salinity and drainage. From the two methods used i.e., simple limitation and parametric methods (Storie and Square root methods), the latter (Square root methods) produced more realistic results in respect to the existing conditions of the region.
  B. Jannat , M. R. Oveisi , N. Sadeghi , M. Hajimahmoodi , M. Behzad , E. Choopankari and A. A. Behfar
  Sesame seed ( Sesamum indicum L.) is one of the world's most important and oldest oilseed crops with a high level content of antioxidant known to human health. The antioxidant factors responsible for the stability of roasted sesame seeds is highly affected by the conditions of the roasting process. Survey of the roasting temperature and time effects on antioxidants and total phenolic content in Iranian sesame seeds was the aim of this investigation. Spectrophotometer methods based on folin-ciocalteau reagent for determination of total phenolic content (TPC) and Ferric Reducing Antioxidant Power assay (FRAP) technique for total antioxidant activity were used before and after different roasting processes. Some of 8 Iranian sesame seeds cultivares were studied (n = 160), including Branching Naz, Non Branching Naz, Dezful, Darab, Karaj, Moghan, Varamin and Black sesame. The range of FRAP values was between 0.301±0.029μM and 1.746±0.083μM in Moghan and Branching Naz seasem seed cultivares, respectively. The FRAP value increased from 0.974±0.095 μ M in unroasted Branching Naz as a control to 1.746±0.083 μ M after roasting in 200ºC for 20min. Also TPCs increased significantly as the roasting temperature. The amount of TPC varied in different sesame cultivars from 20.109±3.967 μ M to 129.300±3.493 μ M in Varamin and Branching Naz sesame seed cultivares, respectively; also TPC increased from 70.953±5.863 μ M in unroasted Branching Naz sesame seed as a control to 129.300±3.493 μ M after roasting in 200ºC for 20 min .Branching Naz seasem seed cultivare was at the highest level in total antioxidants and total phenolic contents in comparison to other samples; however Moghan and Varamin cultivares were at the lowest level in total antioxidants and total phenolic contents, respectively. The present study showed that Iranian sesame seed can be considered as a good source of natural antioxidant specially after roasting. The optimum temperature and time roasting to obtain the most antioxidants and total phenolic content was 200º C for 20 min.
  A. Landi , S. Boroomand-Nasab , M. Behzad , M.R. Tondrow , M. Albaji and A. Jazaieri
  The main objective of this research is to compare different irrigation methods based upon a parametric evaluation system in an area of 43700 ha in the Fakkeh region located in Elam Province, West Iran. Soil properties of the study area including texture, depth, electrical conductivity, drainage, calcium carbonate content and slope were derived from a semi-detailed soil study regarding Fakkeh plain in a scale of 1:20000. After analyzing and evaluating soil properties, suitability maps were generated for surface, sprinkle and drip Irrigation methods by means of Remote Sensing (RS) Technique and Geographic Information System (GIS). The results showed that 1715 ha (3.93%) of the studied area were highly suitable for surface irrigation method whereas 7365 ha (16.86%) of the study area highly suitable for sprinkle irrigation methods. Also, it was found that 28190 ha (64.51%) of the study area were highly suitable for drip irrigation methods while some land units coded 1.1, 7.1 and 4.1 covering an area of 9335 ha (21.36%) were not suitable to be used for surface irrigation systems and one land unit coded 7.1 with an area of 735 ha (1.68%) was classified as unsuitable for sprinkle and drip irrigation systems. The results demonstrated that by applying drip irrigation method instead of surface and sprinkle irrigation methods, land suitability classes of 36790 ha (84.19%) for Fakkeh Plain will improve. Also, by applying sprinkle Irrigation instead of surface and drip irrigation methods, land suitability classes of 6945 ha (15.89%) of this plain will improve. The comparison of the different types of irrigation techniques revealed that the drip irrigation was more effective and efficient than the surface and sprinkle irrigation methods for improving the suitability to the irrigation purposes. Also, the sprinkle irrigation was more useful than surface irrigation method. Additionally, the main limiting factor in using surface and sprinkle irrigation methods in this area was soil texture and the main limiting factor in using drip irrigation methods was soil calcium carbonate content.
  G. Ainechee , S. Boroomand-Nasab and M. Behzad
  Information on moisture distribution patterns under point source trickle emitters is a pre-requisite for the design and operation of trickle irrigation systems. This will ensure precise placement of water and fertilizer in the active root zone. The distribution pattern is influenced by the soil properties and the behavior of applied water. In this study, water movement in three soil types from a surface point source was investigated. Experimentation included determination of maximum depths and widths of wetted zone after one hour time interval of water application. The surface wetted radius increased with an increase in application rate. A good relationship was found between the surface wetted radius and the volume of water applied. This suggested that for a certain volume of water applied, a corresponding wetted surface radius can be predicted. The numerical values of wetted surface radius for each flow rate group were compared with those predicted by the suggested equations. Predictability of model was estimated as 96.8 and 95.3%, respectively, for prediction of wetted width and depth. The results showed good agreement for all application rates.
  S. Broomand Nasab , F. Baradarane-Hezave and M. Behzad
  The scarcity of water resources is one of the crises most commonly experienced in different regions of the world especially in Iran. By the implementation of pressurized irrigation projects in this region, it is likely to enhance the consumption efficiency. One of the indispensable components in any irrigation exercise in order to improve the irrigation systems is evaluation activity. In the present study, nine different sprinkler irrigation systems i.e., the solid set system and wheel move systems in the Arak agricultural area, Iran were selected, tested and evaluated. Values of Coefficient Uniformity (CU), Distribution Uniformity (DU), Potential Efficiency of Water Application (PELQ), Actual Potential Efficiency of Water Application (AELQ) and maximum pressure difference (ΔPmax) in solid set systems are 76.16, 64.53, 55.56, 51.48 and 45.23%, respectively and for wheel move systems are 82.86, 76.02, 67, 67 and 29%, respectively. Average losses due to wind and deep percolation values were determined as 12.78 and 32.83%, respectively for solid set systems and 12.22 and 2.53%, respectively for wheel move systems. In solid set systems all of parameters failed to meet the expected values, however wheel move systems showed a better performance with mild wind. In general, it can be claimed that the main problems of sprinkler irrigation systems are deficient design and implementation, low distribution uniformity, low water pressure, deficient distribution of pressure, insufficient lengths of lateral pipelines in addition to poor quality equipment utilized and deficient management and maintenance processes.
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