Papers by Rezvan Talebnejad
International journal of plant production., Mar 21, 2024
Acta horticulturae, 2018
Water scarcity and water salinity are major constraints for agricultural production in arid and s... more Water scarcity and water salinity are major constraints for agricultural production in arid and semi-arid regions of Iran. Salt tolerant and high nutritious Andean crop, quinoa (Chenopodium quinoa Willd.), is gaining interest as a food security crop outside the center of its origin in various countries around the globe. Recently, it has been introduced into the Mediterranean region and it is a good candidate crop for agricultural diversification. However, little documented investigations are presented about the possibility of quinoa to complete its developmental growth in non-native weather conditions. Therefore, three-year experiments were conducted in a greenhouse at the College of Agriculture, Shiraz University, in Fars province of Iran, to distinguish phenological stages, salinity and water stress reactions of quinoa, Danish-bred cultivar ('Titicaca, no. 5206'), in presence of saline shallow ground water. Results indicated that quinoa has potential to be adapted in Iran as a new crop, complete its developmental stage and produce seed yield (2.21 Mg ha-1 at 0.8 m saline groundwater depth with 20 dS m-1 water salinity at full irrigation management). Furthermore, 70% reduction in irrigation water resulted in 40% reduction in seed yield as compared with full irrigation management at 0.80 m groundwater depth; whereas seed yield water productivity was 1.16 kg m-3. Comparison between quinoa and cereal crops which are sensitive to salinity and water stress, such as rice, emphasized the importance of plant diversity on food security especially under water scarcity and salinity.
Archives of Agronomy and Soil Science, Mar 6, 2013
In Iran, rice is grown in areas where the groundwater depth (GD) is low. Therefore, water-saving ... more In Iran, rice is grown in areas where the groundwater depth (GD) is low. Therefore, water-saving irrigation (WSI) can be used instead of continuous flood irrigation (CFI) in order to use the groundwater. The objectives of this study were to investigate the interaction effects of irrigation regimes and GDs on growth and yield of rice and groundwater contribution (GC) to crop evapotranspiration (ET) in cylindrical greenhouse lysimeters. Irrigation regimes were CFI and intermittent flood irrigation (IFI) with 4- and 8-day intervals (IFI-4 and IFI-8, respectively), and GDs were 0.3, 0.45, and 0.60 m. Results indicated that in a climate condition similar to experimental environment in greenhouse, using IFI-4 at a GD of 0.3 m produced grain yield and straw and root dry matter (DM) similar to those obtained when using CFI, with 53% reduction in irrigation water use. However, straw and root DM increased in CFI with increasing soil column length. Maximum GC/ET (41%) was observed when using IFI-4 at a GD of 0.3 m. A multiple regression equation was presented to estimate GC/ET as a function of GD and soil moisture deficit (SMD). This equation indicates that at a given GD with extension of irrigation intervals and increased SMD GC/ET reached a maximum value followed by a decrease afterwards. Maximum values of GC/ET were obtained at SMD values of 0.47, 0.40, and 0.33 at GDs of 0.3, 0.45, and 0.6 m, respectively.
Agricultural Water Management, Sep 1, 2015
Water scarcity and salinity are two important limitations for agricultural production. Interactio... more Water scarcity and salinity are two important limitations for agricultural production. Interaction effects of deficit irrigation and shallow groundwater on crop water use could increase water productivity in arid and semi-arid areas. Quinoa is a traditional Andean seed crop that has been introduced all around the world. However, response of quinoa as a salinity and drought tolerant crop to shallow saline groundwater under deficit irrigation has not been studied. Therefore, the aim of this study was to investigate the influence of saline groundwater depths, GD (0.3, 0.55, and 0.80m) and deficit irrigation, DI (80, 55 and 30% of full irrigation, FI) on growth, yield and water productivity of quinoa and groundwater contribution (GWC) to its water use in lysimeters under greenhouse conditions. Results indicated that 70% reduction of the full irrigation water resulted in only 36% reduction in seed yield (SY) as compared with maximum SY (2.1Mgha−1 at 0.80m GD with 0.80FI), whereas water productivity based on SY (WUEIseed) increased 12%. Shoot dry matter (SDM) is not sensitive to water deficit and reducing the irrigation volume from 0.80FI to 0.30FI resulted in only 8% decrease in SDM in presence of shallow groundwater. It is concluded that at moderate deficit irrigation (0.80FI) shallow groundwater should be maintained at 0.55m or higher to obtained maximum SY; however, in places with shallow groundwater (0.30m), deficit irrigation should be applied in order to achieve higher SY. On average, 27% and 41% reduction in GWC was observed by increasing GD from 0.30 to 0.55m and 0.30 to 0.80m, respectively. GWC/ET ranged from 0.40 to 0.72 for 0.80FI, 0.46 to 0.75 for 0.55FI and 0.51 to 0.80 for 0.30FI. Finally, contour plot was developed to show the combined effect of DI and GD on GWC/ET. The boundary for groundwater contribution to quinoa ET is GD=0.55SWD+1.22 (SWD is the soil water depletion fraction of total available water). Results indicated that 210mm of ET is required to initiate SY production for quinoa in greenhouse conditions and transpiration efficiency (the ratio of SDM to the seasonal transpiration) for quinoa dry matter production is 0.028Mgha−1mm−1. Seed and dry matter yield response factor to water stress indicated that SY is more sensitive to water stress, followed by root dry matter (RDM) and SDM.
CRC Press eBooks, Jun 24, 2021
Archives of Agronomy and Soil Science, Feb 25, 2016
ABSTRACT The objective of this study was to investigate the influence of saline groundwater depth... more ABSTRACT The objective of this study was to investigate the influence of saline groundwater depths (SGDs) (0.3, 0.55, and 0.80 m) with salinity equivalent to irrigation water salinity (WS) and irrigation WS (10, 20, 30, and 40 dS m−1) on physiological characteristics, gas exchange, and plant ion relations of quinoa in cylindrical lysimeters in greenhouse conditions. Root length density (RLD) in the soil layer close to the saline shallow groundwater decreased. Soil aeration was the key point for reduction in RLD by decreasing SGD that was intensified by the increase in WS. It is concluded that root of quinoa was sensitive to anaerobic soil conditions. Results showed that the mean value of leaf water potential (Ψ) dropped from −1.53 to −3.09 MPa by increasing WS from 10 to 40 dS m−1. Increasing WS from the lowest to the highest level resulted in 48% decrease in leaf photosynthesis rate (An). Results revealed that leaf stomatal conductance (gs) was more sensitive to salinity than An. Stomatal closure in quinoa started to occur when the Ψ value fell below approximately −1.0 MPa. In general, increasing WS from 10 to 40 dS m−1 resulted in about 4.6-fold, 2.1-fold, and 2.6-fold increase in plant Na+, Ca2+, and Cl− concentration, respectively.
Energy Conversion and Management, 2022
Agricultural Water Management, 2015
Water scarcity and water salinity are major constrains for agricultural production in arid and se... more Water scarcity and water salinity are major constrains for agricultural production in arid and semi-arid regions of Iran. Salt tolerant and high nutritious crop, quinoa, has been introduced all around the world. However, little documented investigations are presented about the effect of different saline groundwater depths and irrigation water salinities on plant growth, yield and water use of quinoa. Therefore, the aim of this study was to investigate the influence of saline groundwater depths, SGD (0.3, 0.55 and 0.80 m) with salinity equivalent to irrigation water and irrigation water salinity, WS (10, 20, 30 and 40 dS m −1) on growth and yield of quinoa and groundwater contribution to its water use in cylindrical lysimeters in greenhouse conditions. Results indicated that increasing in WS caused significant decrease in seed yield (SY) and shoot dry matter (SDM) and at all SGDs. However, root dry matter (RDM), harvest index (HI), protein content, 1000-seed weight (SW), number of panicle per plant (NP) and plant height (PH) are reduced by WS higher than 20 dS m −1. Furthermore, at all WSs increasing in SGD resulted in significant increase in SY, SDM, RDM and ET. Results indicated that quinoa is able to extract water (groundwater contribution to evapotranspiration ratio, GWC/ET as 18 to 66%) from saline groundwater, even at no deficit irrigation conditions. Contour plot was developed to show the combined effect of WS and SGD on GWC/ET. It is indicated that non-saline groundwater depth lower than 1.62 m could contribute to quinoa water use. In presence of saline groundwater (SGD as m), the salinity should be considered by the equation SGD = 1.62 − 0.013WS.Yield-salinity functions indicated that maximum threshold EC e for SY (20.7 dS m −1) occurred at 0.80 m SGD and seed yield reduction coefficient (b) was on average, 7.7% per unit soil salinity increase. Also, increasing in SGD resulted in significant decrease in RDM reduction coefficient. Minimum RDM reduction coefficient was 5.5% per unit soil salinity increase. It showed that quinoa root is more tolerant to salinity than shoots.
Stochastic Environmental Research and Risk Assessment
Journal of Plant Nutrition
Plants
Sustainable field crop management has been considered to reach the food security issue due to glo... more Sustainable field crop management has been considered to reach the food security issue due to global warming and water scarcity. The effect of deficit irrigation and nitrogen rates on quinoa yield is a challenging issue in those areas. In this regard, the interaction effects of different N rates (0, 125, 250, and 375 kg N ha−1) and irrigation regimes [full irrigation (FI) and deficit irrigation at 0.75 FI and 0.5 FI] on quinoa yield and water and nitrogen efficiencies were evaluated with a two-year field experiment. Increasing nitrogen fertilizer application levels from 250 to 375 kg N ha−1 under FI and deficit irrigation did not cause a significant difference in seed yield and the total dry matter of quinoa. Furthermore, 20% and 34% reductions were observed for nitrogen use efficiency (NUE) and nitrogen yield efficiency with the application of 375 kg N ha−1 compared with that obtained in 250 kg N ha−1 nitrogen fertilizer, respectively. Therefore, a Nitrogen application rate of 250 ...
International Journal of Plant Production, 2016
Salinization of soil is primarily caused by capillary rise from saline shallow groundwater or app... more Salinization of soil is primarily caused by capillary rise from saline shallow groundwater or application of saline irrigation water. In this investigation, the transient state analytical model was modified to predict water uptake from saline shallow groundwater, actual crop evapotranspiration, soil water content, dry matter, seed yield and soil salinity under different saline groundwater depths, irrigation water salinities and deficit irrigation for quinoa. Considering the effect of salinity on soil saturated hydraulic conductivity and maximum root depth in presence of shallow saline groundwater, the model resulted in good agreement between the measured and predicted saline groundwater uptake, soil salinity increase at different groundwater depths (300-800 mm) and water salinity (10-40 dS m -1 ). Therefore, the modified model is applicable for quinoa yield and soil salinity prediction and it could be a valuable tool for soil salinity management in presence of shallow saline groundw...
International Journal of Plant Production, 2014
Rice is an essential crop in Iran that is grown mostly in areas where depth to groundwater is low... more Rice is an essential crop in Iran that is grown mostly in areas where depth to groundwater is low. Root growth and water uptake of rice under shallow groundwater has not been thoroughly studied. This experiment was conducted to determine the lowland rice (cv. Ghasrodashti) root distribution above shallow groundwater in relation to deficit irrigation and groundwater depth in cylindrical greenhouse lysimeters. The irrigation treatments were continuous flood irrigation (CFI) and intermittent flood irrigation (4- and 8-day intervals IF-4 and IF-8). The groundwater depths (GWD) were 0.3, 0.45 and 0.6 m from the soil surface. In general, 40-60% of root dry weight was observed in the top 10 cm of soil in CFI treatments and IF-4 with 0.3 m GWD resulted in 20% increase in root dry weight in 10-20 cm layer compared with 0-10 cm. However, the root dry weight in 0-10 cm at 0.60 m GWD was 58% lower in intermittent irrigation compared to CFI. There was no significant difference in mean root lengt...
Energy Conversion and Management, 2021
Future of Sustainable Agriculture in Saline Environments, 2021
Journal of Cleaner Production, 2020
This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
Archives of Agronomy and Soil Science, 2016
ABSTRACT The objective of this study was to investigate the influence of saline groundwater depth... more ABSTRACT The objective of this study was to investigate the influence of saline groundwater depths (SGDs) (0.3, 0.55, and 0.80 m) with salinity equivalent to irrigation water salinity (WS) and irrigation WS (10, 20, 30, and 40 dS m−1) on physiological characteristics, gas exchange, and plant ion relations of quinoa in cylindrical lysimeters in greenhouse conditions. Root length density (RLD) in the soil layer close to the saline shallow groundwater decreased. Soil aeration was the key point for reduction in RLD by decreasing SGD that was intensified by the increase in WS. It is concluded that root of quinoa was sensitive to anaerobic soil conditions. Results showed that the mean value of leaf water potential (Ψ) dropped from −1.53 to −3.09 MPa by increasing WS from 10 to 40 dS m−1. Increasing WS from the lowest to the highest level resulted in 48% decrease in leaf photosynthesis rate (An). Results revealed that leaf stomatal conductance (gs) was more sensitive to salinity than An. Stomatal closure in quinoa started to occur when the Ψ value fell below approximately −1.0 MPa. In general, increasing WS from 10 to 40 dS m−1 resulted in about 4.6-fold, 2.1-fold, and 2.6-fold increase in plant Na+, Ca2+, and Cl− concentration, respectively.
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Papers by Rezvan Talebnejad