Sustained release of urea from chitosan nanocomposite

Overview

This solution introduces a novel chitosan-based nanocomposite designed for the sustained release of urea, a critical nutrient for plant growth. By integrating chitosan with an elicitor molecule and urea, the nanocomposite not only supports plant growth but also boosts systemic acquired resistance, enhancing disease resistance. This dual function allows it to act as an insecticide when applied externally, providing a comprehensive approach to plant care and protection.

Technical specifications

• The nanocomposite consists of chitosan, urea, and elicitor molecules, forming a stable matrix for controlled urea release.
• Urea concentration ranges from 100-500 ppm, with chitosan at 0.1% (W/V).
• The nanocomposite is characterized using SEM and TEM, with stability assessed by zeta potential analysis.
• The release kinetics of urea are tuned through pH variations between the nanocomposite and plant cellular environment.
• It is applied via foliar spray, entering plants through stomata to induce hypersensitive responses and systemic resistance.

Technology readiness level

Currently at TRL 3, the solution has been validated in laboratory settings, with further development required for field trials and commercial application. Ongoing research focuses on optimizing release kinetics and efficacy in real-world agricultural settings.