Cooperative Extension Service
Departments
Administration
Agriculture Special Programs - The Prevention and Management of Herbicide
Resistant Weeds
1) TITLE OF FOCUS PROGRAM:
The Prevention and Management of Herbicide Resistant Weeds
2) SITUATION AND PRIORITIES:
Herbicide resistance issues are developing at an alarming rate in Arkansas
Crops. Specific weed problems include: barnyardgrass resistance to rice
herbicides, ryegrass resistance to wheat herbicides, glyphosate resistant Palmer
amaranth (pigweed), red rice resistance to Newpath herbicide in Clearfield rice,
glyphosate resistant horseweed, and potentially others.
Approximately 40 counties are impacted by this program. Potentially all
counties in Arkansas are eligible.
3) GOAL(S) OF THE PROGRAM:
To develop programs and educational materials to curb the development and
prevent the spread of herbicide resistant weeds in agricultural crops.
4) OBJECTIVE(S):
1) Increase the awareness of herbicide resistant weed issues
affecting your area.
2) Implementation of resistance prevention recommendations.
3) Confirmation of suspected herbicide resistant weeds.
4) Implementation of resistance management strategies where
resistance has been confirmed.
5) FACULTY IN CHARGE BY OBJECTIVE:
Dr. Bob Scott, Extension Weed Specialist
Dr. Ken Smith, Extension Weed Specialist
VI. OUTPUTS (for each objective):
Demonstrations: As appropriate and where needed.
In-Service Trainings: Increase
basic knowledge of herbicide resistant
and give updates on resistance
developments across the state.
Support Materials: Herbicide
resistance brochure, fact sheet and
PowerPoint presentations.
Media Packets: If needed
Meeting Support: Support local
meetings as needed by the county agent
Other:
VII. OUTCOMES EXPECTED (for each objective):
A 20-50% change in production practices where no resistance is
documented. A 50-75% change in production practices where resistance
has developed. Increase efficiency and higher yield. Reduced spread
of herbicide resistant weeds.
VIII. TARGET AUDIENCE(S):
Rice, Cotton, Soybean and Corn producers
Extension Agents
Crop Consultants
Associated Industry Personnel
IX. (A) SPECIALIST ROLE: To Provide Leadership in educating
growers and others on
development, prevention and
control of herbicide resistant
weeds.
(B) AGENT ROLE: To
provide direct support to
clientele and liaison with
specialist.
(C) DISTRICT DIRECTOR ROLE:
(D) UNIT HEAD ROLE:
X. EVALUATION METHODS PLANNED: Number of grower visits, phone
calls and programs implemented. Adoption of specific recommendations
and programs.
XI. RESOURCES REQUIRED:
XII. LIST OF DEPARTMENTS INVOLVED: Crop, Soil and Environmental
Sciences.
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