Nuclear physics-based tracking of applied nitrogen and potassium

Overview

This innovative technique leverages nuclear physics to track the movement and transformation of applied nitrogen and potassium in agricultural environments. By tagging nitrogen with 15N and potassium with 41K, this method allows for precise monitoring of nutrient flow regardless of chemical transformations. This approach promises to revolutionize nutrient management by enabling farmers to understand how these essential nutrients are transported and utilized, potentially identifying previously unknown environmental effects.

Technical specifications

The process involves bombarding soil, biomass, and other materials with neutrons or protons to detect the unique gamma rays emitted by the tagged isotopes 15N and 41K. Key features include:

• Excitation: Inducing nuclear transitions that lead to identifiable gamma ray signatures.
• Transformation: Creating nearby isotopes through transfer or capture reactions, which decay via detectable processes.
• Broad applicability: Capable of tracking nutrient flow into crops, runoff, and even animal waste.
• Field-deployable potential: Aimed at developing portable devices for in-field nutrient tracking.

Technology readiness level

Currently at Technology Readiness Level 3, this technique has undergone initial experimental validation. Further development and testing are planned to enhance sensitivity and calibration, moving towards a field-deployable solution.