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Excessive use of nitrate fertilizers in agriculture causes harm to humans and the environment. The most suitable nitrate removal process is heterotrophic biological denitrification. The purpose of the present study was to evaluate the performance of three shapes of denitrification bioreactors: triangular, rectangular and semicircular. The main element that was used to remove nitrate was beech woodchips. The concentration of inlet nitrate was 75 mg/l and the salinity of the solution was 1 ds/m and 5 ds/m, for a period of six months. The results showed that the efficiency of the triangular bioreactor with a salinity level of 1 ds/m was 90%, which is more efficient than the rectangular and semicircular bioreactors with performances of 55.8% and 53.8%, respectively. The results also indicated that at a salinity level of 5 ds/m, the semicircular bioreactor with a performance of 50.8% inlet nitrate removal was the best of the three shapes of bioreactors tested, the efficiencies of the triangular and rectangular bioreactors were 49.9% and 48.6% respectively. Also, it was observed that at the salinity level of 1 ds/m, a high hydraulic retention time had a high positive effect on denitrification, on the other hand at the salinity level of 5 ds/m, there was better performance of denitrification if the hydraulic retention time was lower.
Sasan Faramarzmanesh; Mahmoud Mashal; Seyyed Ebrahim Hashemi Garmdareh. Effect of saline drainage water on performance of denitrification bioreactors. Water Supply 2020, 21, 98 -107.
AMA StyleSasan Faramarzmanesh, Mahmoud Mashal, Seyyed Ebrahim Hashemi Garmdareh. Effect of saline drainage water on performance of denitrification bioreactors. Water Supply. 2020; 21 (1):98-107.
Chicago/Turabian StyleSasan Faramarzmanesh; Mahmoud Mashal; Seyyed Ebrahim Hashemi Garmdareh. 2020. "Effect of saline drainage water on performance of denitrification bioreactors." Water Supply 21, no. 1: 98-107.
M. Amerian; S. E. Hashemi Garmdareh; A. Karami. Comparison of the Effect of Furrow and Drip Irrigation with Waste Water Combined with Deficit Irrigation on Yield Indices and Water Use Efficiency of Corn. Journal of Water and Soil Science 2020, 24, 179 -190.
AMA StyleM. Amerian, S. E. Hashemi Garmdareh, A. Karami. Comparison of the Effect of Furrow and Drip Irrigation with Waste Water Combined with Deficit Irrigation on Yield Indices and Water Use Efficiency of Corn. Journal of Water and Soil Science. 2020; 24 (3):179-190.
Chicago/Turabian StyleM. Amerian; S. E. Hashemi Garmdareh; A. Karami. 2020. "Comparison of the Effect of Furrow and Drip Irrigation with Waste Water Combined with Deficit Irrigation on Yield Indices and Water Use Efficiency of Corn." Journal of Water and Soil Science 24, no. 3: 179-190.
A sub-irrigated planter (SIP) is a container irrigation technique in which water is supplied to the crop from the bottom, stored in a saturated media-filled reservoir beneath an unsaturated soil, and then delivered by capillary action to the root zone. The aim of this study was to optimize the water management and to assess the performance of this technique in terms of water use efficiency, soil moisture, and solute distribution in comparison with surface irrigation in a Mediterranean greenhouse. The experiment consisted of four SIP treatments, with a constant water level in the bottom reservoir in order to evaluate the effect of two different irrigation salinities (1.2 and 2.2 dS m−1) and two depths of substrate profiles (25 and 15 cm). The results showed that SIP is capable of significantly improving both water-use efficiency and plant productivity compared with surface irrigation. Also, a 24% average reduction in water consumption was observed while using SIP. Moreover, SIPs with a higher depth were recommended as the optimum treatments within SIPs. The type of irrigation method affected the salinity distribution in the substrate profile; the highest salinity levels were registered at the top layers in SIPs, whereas the maximum salinity levels for the surface treatments were observed at the bottom layers. SIPs provide a practical solution for the irrigation of plants in areas facing water quality and scarcity problems.
Marjan Vahabi Mashhor; Mahmoud Mashal; Seyyed Ebrahim Hashemi Garmdareh; Juan Reca; Maria Teresa Lao; Maryam Veravipour; Hamed Ebrahimian. Growth, Yield, and Water Productivity Responses of Pepper to Sub-Irrigated Planter Systems in a Greenhouse. Sustainability 2020, 12, 1100 .
AMA StyleMarjan Vahabi Mashhor, Mahmoud Mashal, Seyyed Ebrahim Hashemi Garmdareh, Juan Reca, Maria Teresa Lao, Maryam Veravipour, Hamed Ebrahimian. Growth, Yield, and Water Productivity Responses of Pepper to Sub-Irrigated Planter Systems in a Greenhouse. Sustainability. 2020; 12 (3):1100.
Chicago/Turabian StyleMarjan Vahabi Mashhor; Mahmoud Mashal; Seyyed Ebrahim Hashemi Garmdareh; Juan Reca; Maria Teresa Lao; Maryam Veravipour; Hamed Ebrahimian. 2020. "Growth, Yield, and Water Productivity Responses of Pepper to Sub-Irrigated Planter Systems in a Greenhouse." Sustainability 12, no. 3: 1100.
Sima Jafari; Seyyed Ebrahim Hashemi Garmdareh. Effects of salinity on morpho-physiological, and biochemical characteristics of stock plant (Matthiola incana L.). Scientia Horticulturae 2019, 257, 1 .
AMA StyleSima Jafari, Seyyed Ebrahim Hashemi Garmdareh. Effects of salinity on morpho-physiological, and biochemical characteristics of stock plant (Matthiola incana L.). Scientia Horticulturae. 2019; 257 ():1.
Chicago/Turabian StyleSima Jafari; Seyyed Ebrahim Hashemi Garmdareh. 2019. "Effects of salinity on morpho-physiological, and biochemical characteristics of stock plant (Matthiola incana L.)." Scientia Horticulturae 257, no. : 1.
Nitrate loadings from agricultural drainage to surface water resources cause’s serious water quality concerns in many parts of the world. Denitrification bioreactors are suitable option for removing nitrate from agricultural drainage water. The objectives of this study was to investigate the effect of different hydraulic cross sections of denitrification beds on the amount of effluent EC. In this study, three denitrification beds were constructed with a semicircular, triangle and a rectangle cross sections, filled with wood chips of beech tree. Samples were taken from the outlets of all three beds at a depth at 25 and 50 cm from the bottom of the bed for two months. EC of the samples was meassured using EC-meter. After determining the EC of the samples, data were analyzed by T-test and Univariate tests. The results showed that the shape of the cross-section of the denitrification beds and the saturation depth had a significant effect on EC and the amount of EC of the outflow was increased.
Hedieh Ahmadpari; Seyyed Ebrahim Hashemi Garmdareh; Samira Sadri. Investigating the Effect of Different Hydraulic Cross Sections of Denitrification Beds on the Amount of Effluent EC. Tecnologia e Ambiente 2019, 25, 176 -187.
AMA StyleHedieh Ahmadpari, Seyyed Ebrahim Hashemi Garmdareh, Samira Sadri. Investigating the Effect of Different Hydraulic Cross Sections of Denitrification Beds on the Amount of Effluent EC. Tecnologia e Ambiente. 2019; 25 ():176-187.
Chicago/Turabian StyleHedieh Ahmadpari; Seyyed Ebrahim Hashemi Garmdareh; Samira Sadri. 2019. "Investigating the Effect of Different Hydraulic Cross Sections of Denitrification Beds on the Amount of Effluent EC." Tecnologia e Ambiente 25, no. : 176-187.
Sima Jafari; Seyyed Ebrahim Hashemi Garmdareh; Behzad Azadegan. Effects of drought stress on morphological, physiological, and biochemical characteristics of stock plant (Matthiola incana L.). Scientia Horticulturae 2019, 253, 128 -133.
AMA StyleSima Jafari, Seyyed Ebrahim Hashemi Garmdareh, Behzad Azadegan. Effects of drought stress on morphological, physiological, and biochemical characteristics of stock plant (Matthiola incana L.). Scientia Horticulturae. 2019; 253 ():128-133.
Chicago/Turabian StyleSima Jafari; Seyyed Ebrahim Hashemi Garmdareh; Behzad Azadegan. 2019. "Effects of drought stress on morphological, physiological, and biochemical characteristics of stock plant (Matthiola incana L.)." Scientia Horticulturae 253, no. : 128-133.
Conservation agriculture, especially no-tillage, has proven to become sustainable farming in many agricultural environments globally. In spite of advantages of no-till systems, this practice may result in excess infiltration into the soil and can enhance the movement of mobile nutrients and some pesticides to subsurface drains and groundwater along preferential pathways. The goal of this study was to evaluate the capacity of DRAINMOD-N II to simulate subsurface nitrate-N leaching in no-till fields in Truro, Nova Scotia, Canada, from 2003 to 2006. The model performance was first evaluated by comparing observed and simulated drain outflow data that is an essential prerequisite for the model to obtain a proper prediction of NO3-N movement, and then by comparing observed and simulated NO3-N concentration in no-till fields using three statistical indices, relative root mean square error (RRMSE), average absolute deviation (AAD) and the correlation coefficient (R2). The RRMSE, AAD and R2 for the validation period were determined to be 1.09, 1.85 and 0.83 mm for drain outflow, and 1.43, 0.51 and 0.79 mg l−1 for NO3-N concentration respectively. The results showed that DRAINMOD-N II predicted NO3-N leaching reasonably well in drainage outflow of no-till fields over the whole period. Copyright © 2018 John Wiley & Sons, Ltd.
Seyyed Ebrahim Hashemi Garmdareh; Raheleh Malekian; Ali Madani; Robert Gordon. Simulation of Nitrate-N Leaching in No-Till Fields with DRAINMOD-N II in a Cold-Humid Region. Irrigation and Drainage 2018, 67, 65 -72.
AMA StyleSeyyed Ebrahim Hashemi Garmdareh, Raheleh Malekian, Ali Madani, Robert Gordon. Simulation of Nitrate-N Leaching in No-Till Fields with DRAINMOD-N II in a Cold-Humid Region. Irrigation and Drainage. 2018; 67 ():65-72.
Chicago/Turabian StyleSeyyed Ebrahim Hashemi Garmdareh; Raheleh Malekian; Ali Madani; Robert Gordon. 2018. "Simulation of Nitrate-N Leaching in No-Till Fields with DRAINMOD-N II in a Cold-Humid Region." Irrigation and Drainage 67, no. : 65-72.
Sareh Tangsir; Hadi Moazed; Abd Ali Naseri; Seyyed Ebrahim Hashemi Garmdareh; Saeed Broumand-Nasab; Amit Bhatnagar. Investigation on the performance of sugarcane bagasse as a new carbon source in two hydraulic dimensions of denitrification beds. Journal of Cleaner Production 2017, 140, 1176 -1181.
AMA StyleSareh Tangsir, Hadi Moazed, Abd Ali Naseri, Seyyed Ebrahim Hashemi Garmdareh, Saeed Broumand-Nasab, Amit Bhatnagar. Investigation on the performance of sugarcane bagasse as a new carbon source in two hydraulic dimensions of denitrification beds. Journal of Cleaner Production. 2017; 140 ():1176-1181.
Chicago/Turabian StyleSareh Tangsir; Hadi Moazed; Abd Ali Naseri; Seyyed Ebrahim Hashemi Garmdareh; Saeed Broumand-Nasab; Amit Bhatnagar. 2017. "Investigation on the performance of sugarcane bagasse as a new carbon source in two hydraulic dimensions of denitrification beds." Journal of Cleaner Production 140, no. : 1176-1181.