Document Type : Original Article
Authors
1
water engineering department, shahid bahonar university of kerman,
2
Water Engineering Department, Shahid Bahonar University of Kerman. Kerman
3
Plant Production and Genetics Department, Shahid Bahonar University of Kerman, Kerman
4
Water Engineering Department, Shahid Bahonar University of Kerman, Kerman, Iran
Abstract
this research investigated the effect of applying a magnetic field on the dimensions of soil moisture distribution pattern using saline water in the drip irrigation system. For this purpose, a physical model was built and experiments were performed as a time-based split-plot design at five levels of magnetic field (MF= 1500, 3600, 5600, 7600 and 9400 Gauss compared to the control sample) and five levels of salinity (S= 1.5, 3, 6, 9 and 12 ds.m-1) at three iterations on three soil textures of sandy clay, sandy clay loam and loamy sand. In the moisture distribution pattern, the maximum wetted width on the soil, maximum depth of wetted zone, maximum wetted width in the soil and maximum depth of wetted width were recorded at ten 30-minute intervals. Analyzing the recorded values indicated the significant effect of magnetic field × salinity × time on the depth of wetted zone, wetted width on the soil and wetted width in the soil at 30-minute intervals in all the three textures.The obtained results showed that salinity reduced the traits and application of magnetic field modified the effect of salinity (at low levels) and improved the traits in comparison with the control treatment. So, in the first 30 minute, the maximum depth of wetted zone was observed in loamy sand texture (25.5 cm) under MF9400S9 treatment, which is increased by 39.72 and 20% compared to the maximum value recorded in sandy clay and sandy clay loam textures respectively. Also, in the first 30 minutes, the maximum wetted width on the soil and maximum depth of wetted zone were observed in the sandy clay texture under the MF9400S3 treatment (46.75 and 55.5 cm respectively) which was increased compare to maximum value recorded in loamy sand and sandy clay loam
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