Ecological weed management system for herbicide-resistant weed control in rice and wheat fields

Overview

This solution addresses the growing problem of herbicide-resistant weeds in rice and wheat fields by shifting from chemical herbicide dependence to ecological weed management. Excessive herbicide application has driven weed resistance, altered weed seed biology, and increased environmental pollution and food safety concerns. The proposed approach focuses on understanding how herbicide resistance changes weed seed characteristics—particularly floating ability and water-based dispersal—and developing ecological interventions to intercept resistant weed seeds before they spread. By reducing the influx of resistant weed seeds into farmland, the system aims to lower herbicide application frequency, decrease production costs, and support more sustainable crop protection.

Technical specifications

• Seed biology analysis: Microstructural observation of herbicide-resistant weed seeds using the slice method to identify physical changes linked to resistance
• Floating experiments: Laboratory testing to quantify seed floating ability and dispersal potential via water
• Biological characteristic measurement: Assessment of seed traits that influence buoyancy and dispersal range
• Seed interception measures: Field-deployed ecological tools designed to capture and remove floating weed seeds from irrigation and drainage channels
• Field trials: Two-year validation studies in rice and wheat fields to evaluate control efficacy against resistant weed populations
• Application scope: Designed for rice and wheat production systems facing herbicide resistance challenges

Technology readiness level

The technology is currently at an early-to-mid research and validation stage. Initial multi-year field implementation has shown reductions in weed community occurrence and herbicide application frequency. Future validation will include controlled floating experiments, microstructural seed analysis, and field trials of ecological interception measures over a two-year period. The approach is positioned for further development through field testing and refinement before broader commercial deployment.