Abstract
Inadequate natural drainage facilities and flat lands causes, some of the Cauvery river basin command are suffering waterlogging and alkalinity problems during the canal water supply and period of excess rainfall. Subsurface drainage system is the method to lower the depth to groundwater level below the root zone and creates a favorable environment for crop growth. A study aimed to evaluate the performance of the parallel pipe subsurface system installed in farmers’ field at Sembari village, Lalgudi Taluk, Trichy District, Tamil Nadu in a waterlogged paddy field from October 2020 to February 2021. The field experiment was conducted with the combination of three lateral drain spacing (7.5, 10.0 and 12.5 m) and two drain depths (60 and 80 cm). 63 mm PVC perforated pipes wrapped with coir envelope were laid as lateral drains at a grade 0.3%. Inspection chambers connected with collector drains laid at a grade of 0.6% were used to measure the drain water discharge, observation wells installed midway between lateral pipes drains were used for measuring the depth to groundwater level. Hydraulic properties of soil, depth to water level, discharge collected in drain pipe were used as evaluation parameters. This study revealed that soil hydraulic conductivity had been increased to 30%, pH, EC and ESP has been reduced to 12, 54 and 20%, respectively. The system has performed well to alleviate the waterlogged condition in 7.5 m lateral drain spacing and 80 cm drain depth treatment by observing the higher rate of decrease in depth to water of 0.3 to 0.4 m and a drainage coefficient of 0.069 to 0.29 cm/day.
Highlights
One of the major problems of land degradation in India is waterlogging (Mowr.gov.in. 2021)
The results of observations and measurements recorded with respect to soil properties, hydraulic conductivity, depth to water table in the observation wells and drainage coefficient from the study and relevant discussions have been summarized here
The results revealed that the hydraulic conductivity measured before installation of the drainage system had been increased by 30% when compared to hydraulic conductivity measured after installation
Summary
One of the major problems of land degradation in India is waterlogging (Mowr.gov.in. 2021). The term “water-logged” is referred to as soil that is saturated completely with water and cannot retain oxygen between its pores. Waterlogging arises whenever water enters the soil at a higher rate than it can drain away, when the surplus water stagnates due to poor drainage or when the shallow water table rises to the extent that soil pores in the root zone of a crop become saturated. It can be caused by heavy or prolonged rainfall, over-irrigation, flooding or the presence of a permanent or temporary (perched) high water table. Water-logging is time and placespecific as well (Sahu, 2014)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
