Development of 'Smart Soil' in the U.S.; A New Hope for Sustainable Agriculture

Researchers at the University of Texas at Austin have developed smart soil capable of optimizing the irrigation and nutrient needs of plants. This soil is referred to as smart soil because it can absorb water vapor from the air at night using special hydrogels and release it in a controlled manner during the day for plant root irrigation. Additionally, this soil can control the necessary fertilizers to provide nutrients for plants. According to recent findings from the University of Austin, this smart soil can increase crop growth by up to 138% and reduce water consumption by up to 40%. Jungjun Park, a graduate student in the Department of Mechanical Engineering at the University of Austin who led this research, stated: 'This new technology can alleviate the burden on farmers by reducing the need for frequent irrigation and fertilization. Furthermore, this smart soil can be used in a wide range of climatic conditions, from arid to temperate regions.' It is estimated that about 70% of fresh water consumption worldwide is allocated to agriculture, and in areas with less water, crop cultivation and food supply face numerous difficulties. Moreover, traditional agricultural methods, especially irrigation and fertilization, face significant challenges, including inefficient water use and land degradation. Iran, given its hot and dry climate and rapid population growth, faces water resource shortages. It is estimated that between 70% to 90% of water resources in Iran are used in agricultural industries, with a large portion wasted due to improper use of water resources. The World Resources Institute estimated last year that five countries, including Iran, India, Mexico, the UK, and South Africa, are facing the most severe water stress in the world. Guo Hua Yu, a materials science professor at the University of Austin and author of this study, stated: 'This novel type of hydrogels allows for efficient absorption of water and nutrients, helping farmers better cope with environmental limitations.' This research team has announced its intention to challenge the effectiveness of this smart soil under real conditions in the future by integrating various fertilizers and conducting longer field tests.