Electromagnetic Water Treatment and Soil Compost Incorporation to Alleviate the Impact of Soil Salinization

Author:

Suvendran Subanky1ORCID,Johnson David1,Acevedo Miguel2,Smithers Breana2,Xu Pei1ORCID

Affiliation:

1. Department of Civil Engineering, New Mexico State University, Las Cruces, NM 88003, USA

2. Department of Electrical Engineering, University of North Texas, Denton, TX 76203, USA

Abstract

This study explores the effects of alternating current-induced electromagnetic field (EMF) on mitigating brackish water irrigation and soil salinization impacts. Greenhouse experiments were conducted to evaluate the effect of EMF on plant growth, soil properties, and leaching of ions under different conditions, including using brackish water and desalinated water for irrigation and soil compost incorporation. The experiment was performed with four types of irrigation water using soil columns representing field soil layers. EMF-treated brackish water maintained a sodium adsorption ratio of 2.7 by leaching Na+ from the soil. EMF-treated irrigation columns showed an increase in soil organic carbon by 7% over no EMF-treated columns. Compost treatment reduced the leaching of NO3− from the soil by more than 15% using EMF-treated irrigation water. EMF-treated brackish water and compost treatment enhanced plant growth by increasing wet weight by 63.6%, dry weight by 71.4%, plant height by 22.8%, and root length by 115.8% over no EMF and compost columns. EMF-treated agricultural water without compost also showed growth improvements. The findings suggest that EMF treatment, especially combined with compost, offers an effective, low-cost, and eco-friendly solution to mitigate soil salinization, promoting plant growth by improving nutrient availability and soil organic carbon.

Funder

National Science Foundation

Publisher

MDPI AG

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