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AGRI 41 | LEC | MODULE 4 > Weed Management Approaches > Flashcards

Weed Management Approaches Flashcards

1
Q

WEED MANAGEMENT APPROACHES

A
  1. prevention
  2. control
  3. eradication
  4. management
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2
Q

PREVENTION

A
  1. not allowing entry of weeds to an area
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3
Q

CONTROL

A
  1. limit weed infestation
  2. minimize competition
  3. balance between cost of control and yield loss
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4
Q

ERADICATION

A
  1. complete elimination of weeds
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5
Q

MANAGEMENT

A
  1. combination of techniques of prevention
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6
Q

WEED CONTROL TACTICS

A
  1. physical/mechanical
  2. cultural
  3. genetic
  4. biological
  5. chemical
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7
Q

PHYSICAL CONTROL

A
  1. hand weeding/hoe weeding
  2. tillage/cultivation
  3. soil solarization/steam
  4. flaming
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8
Q

CULTURAL CONTROL

A
  1. takes advantage of agronomic practices associated with crops
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9
Q

CULTURAL CONTROL TACTICS

A
  1. water management (alternate drying and wetting)
  2. planting date and density
  3. crop rotation
  4. nutrient management
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10
Q

BIOLOGICAL CONTROL

A
  1. use of natural enemies to manage weed populations
  2. principle of prey-predator relationship
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11
Q

BIOLOGICAL CONTROL TACTICS

A
  1. natural enemies
  2. pathogens
  3. insects (secondary metabolites)
  4. weeds (chemicals)
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12
Q

CHEMICAL CONTROL

A
  1. use of herbicide
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13
Q

CHEMICAL CONTROL TACTICS

A
  1. knapsack sprayer
  2. tractor mounted sprayer
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14
Q

CLASSIFICATION OF HERBICIDES

A
  1. time of application
  2. selectivity
  3. method of application
  4. mobility
  5. chemical family
  6. mode of action
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15
Q

TIME OF APPLICATION (HERBICIDE)

A
  1. pre-plant
  2. pre-emergence
  3. post-emergence
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16
Q

METHOD OF APPLICATION (HERBICIDE)

A
  1. soil applied
  2. foliar applied (leaves)
17
Q

MOBILITY (HERBICIDE)

A
  1. translocated
  2. contact
18
Q

NEGATIVE IMPACTS OF INCREASING HERBICIDE APPLICATION

A
  1. environmental degradation
  2. weed shift and succession to problematic weeds
  3. development of herbicide resistance
19
Q

GENETICALLY MODIFIED CROPS

A
  1. combats herbicide resistance of weeds
20
Q

INTEGRATED WEED MANAGEMENT

A
  1. combination of various weed control tactics
  2. address impact of chemicals in environment
21
Q

SUCCESSFUL INTEGRATED WEED MANAGEMENT

A
  1. harness synergistic effects of each of the component tactic

AGRI 41 | LEC | MODULE 4 (1 decks)

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