Investigation of soil moisture distribution in Sub-irrigation planter (SIP) using different levels of water salinity (A case study of basil)

Articles in Press

Document Type : Research Paper

Authors

Water Engineering Department, College of Aburaihan, University of Tehran, Iran

10.22059/jwim.2023.339080.966

Abstract

Due to the increasing limitations of water resources, knowing the amount and distribution of moisture in subsurface irrigation is very important in irrigation management. This research was carried out with the aim of investigating sub-irrigation planter (SIP) as one of the suitable methods of irrigation. In this study, two different cultivation media (soil-cocopeat-perlite and cocopeat-perlite) and two depths of the media in the pot (30 and 50 cm) and three water salinity levels of 1.2, 3.5, and 5 dS.m-1 were used. The results showed that there is a significant difference in the wet and dry performance of basil plants between the two irrigation methods at the level of 1% and 5%. However, the yield values decreased significantly with increasing water salinity. Also, the results showed that the productivity of SIP and surface irrigation were significantly different from each other at the level of 1%. The results showed that in the SIP system, the highest salinity is in the surface layers of the soil, while in surface irrigation, the highest salinity is in the bottom layer. The results of investigating the soil moisture in different layers of the substrate showed that the soil moisture in both irrigation methods increases with the increase in the depth of the substrate and at the depth of the substrate, the amount of moisture in SIP is much higher than surface irrigation, and the highest soil moistures were obtained in the deepest layers of both cultivation depths 30 and 50 cm in SIP.

Keywords

Main Subjects

Water and Irrigation Management

Articles in Press, Accepted Manuscript
Available Online from 17 October 2025

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