The effect of Different Raised Bed Sizes under Furrow Irrigation Method on Salt Distribution in Soil Profile and Yield by Hydrus (2/3D). | [Pakistan Journal of Agricultural Research • 2020]

Author(s):

1. Muhammad Sohail Memon: Faculty of Agricultural Engineering,Sindh Agriculture University Tandojam 70060,Pakistan

2. Khadim Ullah: Faculty of Agricultural Engineering,Sindh Agriculture University Tandojam 70060,Pakistan

3. Altaf Ali Siyal: Faculty of Agricultural Engineering, Sindh Agriculture University Tandojam 70060, Pakistan; U.S. Pakistan Center for Advanced Studies in Water (USPCAS-W), Mehran University of Engineering and Technology, Jamshoro, Sindh, 76062, Pakistan

4. Naimatullah Leghari: Faculty of Agricultural Engineering,Sindh Agriculture University Tandojam 70060,Pakistan

5. Ahmed Ali Tagar: Faculty of Agricultural Engineering,Sindh Agriculture University Tandojam 70060,Pakistan

6. Khalil Ahmed Ibupoto: Faculty of Agricultural Engineering,Sindh Agriculture University Tandojam 70060,Pakistan

7. Syed Tahir Ata-ul-karim: Institute of Soil Science, Chinese Academy of Science,China, 200087,P.R.

8. Muhammad Tahir: Department of Soil, Water and Climate, University of Minnesota, United State of America,Water and Climate,USA

9. Noreena Memon: Faculty of Agricultural Engineering,Sindh Agriculture University Tandojam 70060,Pakistan

Abstract:

| The use of raised bed-furrow irrigation method has increased in due to its capability of saving massive amounts of irrigation water. Knowing the importance of raised bed-furrow irrigation (RBFI) in water conservation and salt distribution in profile with three testing treatments viz. T 1 with raised bed size = 0.6 m, T2 with raised bed size = 0.8 m and T3 with raised bed size = 1.0 m. The soil samples were collected from depth desired depth to analysis the Physical chemical properties before and after the trial. Irrigation water was measured through cutthroat flume at each irrigation interval and the total water consumed by ridge ground was 500 mm. The solute transport and soil water content in the root zone was also simulated by HYDRUS-2D. The results reveal that the salts moved upward to the top (upper layers) and concentrated at the center of the ridge for treatments T2 and T3 but leached down from the furrow bottom. Whereas, the simulations carried out by HYDRUS-2D model showed that with increasing size of raised bed, the center of the raised bed did not get the required quantity of water, hence remained unsaturated. Moreover, the highest crop yield and water productivity were recorded 8,748 kg/ha and 3.74 kg/cm3 respectively under T2 treatment as compared to other treatment. Furthermore, the experimental and simulation results of present study concluded that the sides of raised-bed/furrow, where the ridge gourd was sown, received enough water to support the plant growth in all treatments and RBFI with raised bed size of 0.8 m was more water use eficient and suitable method for water scarcity areas.

Page(s): 113-125

DOI: DOI not available

Published: Journal: Pakistan Journal of Agricultural Research, Volume: 33, Issue: 1, Year: 2020

Keywords:

Ridge gourd , Water Consumption , HYDRUS 2D3D model , Soil pH Simulation

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