Herbicide Resistance Powerpoint Flashcards
_________ ________ is the inherited ability of a plant to survive and reproduce following exposure to a dose of herbicide normally lethal to the wild type.
Herbicide resistance
_______ _________ is the inherent ability of a species to survive and reproduce after herbicide treatment.
Herbicide tolerance
There is no evidence that gene transfer is a major factor in the development of herbicide resistance. Instead, over reliance on herbicides with a single mechanism of action to control certain weeds has led to the selection of weeds resistant to that mechanism of action.
True
________ is detected when a high proportion of the _____ population is resistant to the herbicide.
Resistance
Treated
3 reasons why resistance is getting worse:
- type of herbicides we are using
- The herbicides we no longer use
- Production system has changed
Successful long term weed management will depend upon the adoption of integrated weed management practices that balance _______, ______, ______, and _____________ to preserve the usefulness of herbicides for generations to come.
chemical
physical
biological
cultural control
Herbicide Resistance
2005; __ species; 18 states
7 species
Herbicide Resistance
2013; ___ species; 35 states
14 species
Weeds have exhibited resistance to many types of herbicides over the past ____ years.
40
Preventative Cultural Mechanical/Physical Biological Chemical are all...
Methods of weed control
Method of Weed Control
clean equipment, livestock
Preventative
Method of Weed Control
crop rotations, spacing, different cultivars, etc.
Cultural
Method of Weed Control
tilling, mowing, etc
Mechanical/Physical
Method of Weed Control
IPM
Biological
Method of Weed Control
Herbicides
Chemical
