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Related Experiment Video

Updated: Aug 14, 2025

Measuring Rates of Herbicide Metabolism in Dicot Weeds with an Excised Leaf Assay

Measuring Rates of Herbicide Metabolism in Dicot Weeds with an Excised Leaf Assay

Published on: September 7, 2015

Improved Method to Characterize Leaf Surfaces, Guide Adjuvant Selection, and Improve Glyphosate Efficacy.

Zilu Li¹, Xingyu Zhang¹, Yue Wang¹

¹Department of Applied Chemistry, College of Science, China Agricultural University, Beijing100193, China.

Journal of Agricultural and Food Chemistry

|January 11, 2023

Summary

Understanding weed leaf surface properties is key to improving glyphosate herbicide efficacy. This study quantifies leaf surface characteristics to guide adjuvant selection, enhancing weed control and crop production.

Keywords:

apparent surface free energy efficacy glyphosate surface characteristic weeds

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Last Updated: Aug 14, 2025

Measuring Rates of Herbicide Metabolism in Dicot Weeds with an Excised Leaf Assay

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Published on: September 7, 2015

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Published on: June 21, 2018

Area of Science:

Agricultural Science
Plant Biology
Herbicide Research

Background:

Glyphosate is a widely used herbicide crucial for crop production.
Adjuvants enhance glyphosate efficacy, but leaf surface changes can reduce its penetration and lead to herbicide resistance.
Effective weed management requires understanding leaf surface interactions with herbicides.

Purpose of the Study:

To develop a method for characterizing weed leaf surfaces.
To establish the relationship between leaf surface properties, glyphosate retention, and control efficacy.
To guide adjuvant selection for improved glyphosate utilization.

Main Methods:

Systematic investigation of weed leaf surface characteristics using 3D surface analysis and scanning electron microscopy.
Quantification of leaf surface properties using apparent surface free energy (ASFE).
Establishing correlations between ASFE, glyphosate retention, and weed control effectiveness.

Main Results:

Leaf surface characteristics were systematically quantified using ASFE.
A direct relationship was found between weed leaf surface properties and glyphosate retention.
Glyphosate control efficacy was linked to leaf surface characteristics and glyphosate retention.

Conclusions:

Apparent surface free energy (ASFE) provides a quantitative measure of weed leaf surfaces.
Adjuvant selection and concentration should be tailored to specific weed ASFE values for optimal glyphosate efficacy.
This research offers guidance for improving glyphosate utilization and managing herbicide resistance.