Herbicide Injury - Gramoxone(Paraquat)
- Type
- Physiological
- Leaf Condition
- Marginal necrosis, Interveinal necrosis, Complete necrosis
- Leaf Color
- Interior red spots, Brown or red rust spots
- Leaf Location
- Entire leaf, Upper surface, Underside, Edge, Young, Mature
- Petioles Condition
- Death, Collapse
- Flower Condition
- Necrotic
- Field Distribution
- Random, Edges, Localized
- Prior Environmental
- Wind, Pesticide spray
- Season
- Post transplant, Early spring, Pre harvest, Harvest, Post harvest
- Cropping System
- Annual plasticulture, Perennial matted row
Problem
Herbicide injury - gramoxone (Paraquat)
Symptoms
Burning of foliage followed with browning. Contact kill of foliage.
Gramoxone injury 48 hours after application.
Rocco D Schiavone
Gramoxone injury 48 hours after application.
Rocco D Schiavone
Gramoxone injury 5 days after application.
Rocco D Schiavone
Gramoxone injury 7 days after application.
Rocco D Schiavone
Gramoxone injury 14 days after application.
Rocco D Schiavone
Similar Problems
Other herbicides can cause similar damage to strawberry plants.
Additional Information
Injury visible within 24 hours.
Diagnostic Tips
Plants affected will be near areas where weeds were sprayed with the herbicide resulting from drift or spotting during application.
Corrective Measures
No corrective measures are available.
Management
Avoid pesticide application during wind. Use large droplet size and low pressure to avoid drift.
Useful Resources
North Carolina Agricultural Chemicals Manual
Southern Region Small Fruit Consortium
North Carolina Cooperative Extension Strawberry Growers Portal
Funding Sources
Funding was provided in part by the National Sustainable Agriculture Program: Sustainable Strawberry Initiative and the following sources.
