Characterization of Root Length Density and Water Uptake Efficiency in Pearl Millet under Alternate Furrow Irrigation

Abstract

The optimization of water use in arid and semi-arid agriculture has become increasingly important due to growing water scarcity and the need for sustainable crop production. This study focuses on the characterization of root length density and water uptake efficiency in pearl millet under alternate furrow irrigation to evaluate its effectiveness in improving water productivity. The proposed methodology involves field experiments conducted under controlled irrigation treatments, comparing alternate furrow irrigation with conventional full irrigation methods. Key parameters such as root length density at different soil depths, soil moisture distribution, crop growth attributes, and water uptake efficiency are measured and analyzed. Data are collected using soil sampling techniques, root scanning methods, and moisture sensors, followed by preprocessing and statistical analysis to ensure accuracy and consistency. Advanced analytical approaches are employed to assess the relationship between root architecture and water uptake dynamics. Experimental results indicate that alternate furrow irrigation promotes deeper root penetration and enhances root length density in subsurface layers, leading to improved water extraction from deeper soil profiles. Additionally, significant improvements in water uptake efficiency and water use productivity are observed compared to conventional irrigation practices. The findings demonstrate that alternate furrow irrigation not only conserves water but also supports optimal crop growth and yield stability in pearl millet. The study concludes that the integration of efficient irrigation strategies with root system analysis provides a viable approach for sustainable water management and improved crop performance in water-limited environments.