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Updated: May 3, 2026

Monitoring Plant Hormones During Stress Responses

Monitoring Plant Hormones During Stress Responses

Published on: June 15, 2009

Herbicides and plant hormesis.

Regina G Belz¹, Stephen O Duke

¹Agroecology Unit, University of Hohenheim, Stuttgart, Germany.

Pest Management Science

|January 22, 2014

Summary

This summary is machine-generated.

Herbicide hormesis, a growth boost from low herbicide doses, is unpredictable for crops. Understanding this phenomenon is key to using its benefits and avoiding negative impacts on crops and weeds.

Keywords:

glyphosate growth stimulation herbicide hormesis

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Area of Science:

Agricultural Science
Plant Physiology
Toxicology

Background:

Herbicide hormesis, observed at subtoxic herbicide doses, is influenced by various factors.
Mechanisms may involve herbicide target sites, overcompensation to stress, or disturbed homeostasis.
While theoretically useful in agriculture, practical applications are limited.

Purpose of the Study:

To review the phenomenon of herbicide hormesis.
To discuss factors influencing its occurrence and magnitude.
To explore its potential applications and risks in agriculture.

Main Methods:

Literature review of herbicide hormesis studies.
Analysis of factors affecting hormetic responses.
Discussion of implications for crop production and weed management.

Main Results:

Herbicide hormesis is affected by plant stage, environment, measured endpoint, and timing.
Mechanisms include target-site interactions, stress overcompensation, and homeostasis disruption.
Current knowledge limits predictable use in crop production, with sugar cane ripening being an exception.

Conclusions:

Herbicide hormesis presents both potential benefits and risks in agriculture.
Unpredictable factors make widespread crop application risky.
Further research is needed to harness benefits and mitigate risks, especially concerning herbicide-resistant weeds.