American Society of Civil Engineers


Groundwater Contribution by Safflower (Carthamus tinctorius L.) under High Salinity, Different Water Table Levels, with and without Irrigation


by Houshang Ghamarnia, (corresponding author), (Associate Professor, Dept. of Irrigation and Water Resources Engineering, Faculty of Agriculture, Razi Univ., Kermanshah, Iran. E-mail: hghamarnia@razi.ac.ir), Mohsen Golamian, (Former M.Sc. Student, Dept. of Irrigation and Water Resource Engineering, College of Agriculture, Razi Univ., Kermanshah, Iran. E-mail: gmohsenh@yahoo.com), Salome Sepehri, (Former M.Sc. Student, Dept. of Irrigation and Water Resource Engineering, College of Agriculture, Razi Univ., Kermanshah, Iran. E-mail: sepehri_saloome@yahoo.com), Issa Arji, (Assistant Professor, Kermanshah Agricultural and Natural Resources Research Center, Kermanshah, Iran. E-mail: issaarji@gmail.com), and Vahid Rezvani, (M.Sc. Student, Dept. of Irrigation and Water Resource Engineering, College of Agriculture, Kurdistan Univ., Sanandaj, Iran. E-mail: Rezvani.Vahid@gmail.com)

Journal of Irrigation and Drainage Engineering, Vol. 138, No. 2, February 2012, pp. 156-165, (doi:  http://dx.doi.org/10.1061/(ASCE)IR.1943-4774.0000389)

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Document type: Journal Paper
Abstract: Lysimetric experiments were conducted to investigate groundwater contributions made by safflower crop (Carthamus tinctorius L.). The plants were grown in 24 columns, each with a diameter of 0.40 m and packed with silty clay soil. The factorial manner experiments were carried out with four replicates using randomized complete block design with different treatment combinations. Six treatments were applied in each experiment by maintaining groundwater salinity with electric conductivity (EC) of 10 dS/ m and different water table levels of 0.60, 0.80, and 1.10 m, with and without irrigation strategies. The use of groundwater as a part of crop evapotranspiration was determined by taking daily measurements of the water levels in Mariotte tubes. Additional irrigation in the form of surface water was applied for each treatment with EC of 1 dS/ m. The results of the experiments show that for different treatments, with and without irrigation and different water table levels of 0.60, 0.80, and 1.10 m, the average percentage of groundwater contributions achieved were 15, 19, and 25%; and 10, and 19% of the average annual safflower water requirement, respectively.


ASCE Subject Headings:
Groundwater
Salinity
Silts
Clays
Irrigation

Author Keywords:
Groundwater contribution
High salinity
Silty clay soil
Safflower