Water and Irrigation Management

Water and Irrigation Management

Investigation of water absorption and yield of silage corn in different conditions of saline and non saline water

Document Type : Research Paper

Authors
Maryam Marzi Nohadani 1
Farhad Mirzaei 2
Abdolmajid Liaghat 2
1 Ph.D. Student in Irrigation and Drainage, Department of Irrigation and Drainage Engineering, College of Agriculture and Natural Resources, University of Tehran, Karaj
2 Associate Professor in Irrigation and Drainage, Department of Irrigation and Drainage Engineering, College of Agriculture and Natural Resources, University of Tehran
10.22059/jwim.2019.276358.660
Abstract
Regarding the problem of water scarcity and increasing demand for water and water supply problems and the high volume of saline water sources along with fresh water resources, the management of salt and sweet water for agricultural production as a way to preserve water In conditions of water shortage. In this study was evaluated the effect of Partial Root-Zone Salinity Stress on the water uptake in silage corn in lysimeter in a greenhouse. The experiment with five treatments including: 1-No stress, control; Salinity stress in all root, 2- Mix, 3- Interval, Salinity stress in half of the root (despite the thin blade),4-Fixed Partial Root-zone Salinity-stress, 5- Alternative Partial Root-zone Salinity-sress in three replications in a complete randomized design. The results showed that the cumulative uptake, root area and root volume were significant at 5% level. In the Mix treatment, the highest accumulation (333.8 mm) and wet biomass (45.7 t/ha) and lowest salinity stress coefficient (Ks=0.89) were observed. In the Alternative Partial Root-zone Salinity-sress treatment, the lowest cumulative uptake (244.0 mm) and wet and dry biomass (34. 9 and 11.3 ton/ha) and the highest salinity stress coefficient (KS=0.65) were observed.Due to the lack of water resources and the lowering of the quality of water in certain conditions, instead of drought stress,It is possible to use salinity stresses using saline water sources (Drainage water produced in irrigation and drainage projects and projects) along with quality water sources.
Keywords
Conjunction Saline and Non saline water
Corn
Cumulative uptake
Fixed and Alternative Partial Irrigation
Lysymeter
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Water and Irrigation Management
Volume 9, Issue 1
December 2019
Pages 1-14