2. Weed management Flashcards
weed management
Weed management is the utilization of all appropriate practices to aim for prevention , control and eradication of weeds.
Explain why a weed management plan is necessary.
A weed management plan is necessary to effectively use the limited funds and labor force . It is set to prioritize on the control of most important weed species and to protect the natural resources.
In weed management, what should be controlled first?
Isolated patches of the highest priority weed species.
prevention
Prevention is to prevent the invasion of the new weeds in the area. It is the most effective , economical and ecologically sound approach.
List 2 examples of how the introduction of weed seeds occurs.
* Tumble weeds such as kochia and russian thistle * Use of compost containing viable seeds * Top soil brought from the other area
Name 2 methods to limit the introduction of weed seeds into an area.
* cleaning equipments * use of certified seed
List 3 general prevention methods.
* Detect and eradicate small patches of weeds * Re-vegetate disturbed areas with desired plants * Manage and maintain the healthy communities of desired plants * Monitor high risk areas such as human and animal transportation corridors * Minimize the disturbance of desired vegetation
control
Control is the suppression of a weed to the point where its impact is minimized .
eradication
Eradication is the destruction and elimination of all plant parts from an area.
What is the general requirement for eradication?
Eradication can be achieved in small areas and with new infestations. It is often expensive, intense, and requires long term commitment.
How is priorities for weed management is set, and why is it necessary? What should be controlled first?
It is prioritize by weed species and infestations , because it is impossible to control every weeds!
What is ‘EDRR’?
Early Detection and Rapid Response ( EDRR ) is an approach to weed control that emphasizes controlling new , invading weeds while the populations are localized and small .
When should EDRR be performed, and why is it effective yet difficult?
EDRR should be performed before the exponential growth of invasion occurs. It is difficult as it’s before people detect the problem.
Integrated Weed Management
Integrated Weed Management ( IWM ) is a process of combining management strategies ( biological , chemical , mechanical and cultural ) to prevent, control or eradicate a weed species or infestation.
