Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

RHS R2103 > WEEDS > Flashcards

WEEDS Flashcards

1
Q

NAME 2 DISTINCT ANNUAL WEEDS

A
  1. Veronica persica
  2. Poa annua
  3. Chenopodium album
  4. Galium aparine
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

NAME 2 PERENNIAL WEEDS FOUND COMMONLY IN WOODY PERENNIAL PLANTINGS

A
  1. Calystegia sepium (bindweed)
  2. Rubus fruticosus (bramble)
  3. Aegopodium podagraria (ground elder)
  4. Convolvulus arvensis (field bindweed)
  5. Ranunculus repens (creeping buttercup)
  6. Aegopodium podagraria (ground elder)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

DESCRIBE 4 PROBLEMS CAUSED BY PERENNIAL WEEDS IN WOODY PERENNIAL PLANTINGS

A
  1. compete for light, water and nutrients
  2. may distort the growth of cultivated species
  3. unsightly
  4. can be difficult to remove
  5. potential for damage to plants by translocated herbicides
  6. may introduce pest or disease
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

STATE A NAMED HERBICIDE FOR A NAMED PERENNIAL WEED IN A WOODY PERENNIAL PLANTING AND ITS MODE OF ACTION

A

Glyphosate
translocated mode of action
effective against Aegopodium podagraria

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

DESCRIBE WHAT IS MEANT BY A WEED

A

A plant, not deliberately cultivated, growing where it is not wanted or out of place. It interferes with the management objectives for an area at a certain point in time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

NAME 2 TYPES OF WEEDS FOUND IN RECENTLY CULTIVATED SOIL

A

Annual and ephemeral weed seeds are brought to the surface and light by cultivation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

NAME 2 TYPES OF WEEDS FOUND IN LAWNS

A

Annual weeds and rosette forming, stoloniferous and tap rooted perennial weeds that can survive repeated mowing

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

NAME 2 WEEDS FOUND IN LAWNS

A
  1. Poa annua (annual)
  2. Ranunculus repens (perennial)
  3. Taraxacum officinale (perennial)
  4. Bellis perennis (perennial)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

NAME 2 WEEDS FOUND IN RECENTLY CULTIVATED SOIL

A
  1. Cardamine hirsuta (ephemeral)
  2. Senecio vulgaris (ephemeral)
  3. Stellaria media (ephemeral)
  4. Veronica persica (annual)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

NAME 2 WEEDS THAT CAN ACT AS ALTERNATE HOSTS FOR SPECIFIC PLANT PATHOGENS

A
  1. Senecio vulgaris for rust
  2. Capsella bursa-pastoris (white blister rust and club root in brassicas)
  3. Solanum nigrum (moth affecting solanum lycopersicum and potato cyst eelworm)
  4. Tropaeolum for large cabbage white butterfly
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

DESCRIBE THE MODE OF ACTION AND SPECIFIC USE OF RESIDUAL HERBICIDE

A

A chemical absorbed by emerging plants or seedlings at or below soil level.
e.g. Diflufenican

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

DESCRIBE THE MODE OF ACTION AND SPECIFIC USE OF A SELECTIVE HERBICIDE

A

A selective herbicide is effective against the weed (e.g. dicot) without affecting the desired plant (e.g. monocot grass)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

NAME THE ACTIVE INGREDIENT OF A CONTACT HERBICIDE AND 2 WEEDS IT CONTROLS

A

Diquat for Cardamine hirsuta (ephemeral)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

NAME THE ACTIVE INGREDIENT OF A TRANSLOCATED HERBICIDE AND 2 WEEDS IT CONTROLS

A

Glyphosate for Ranunculus repens (perennial)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

DESCRIBE ONE SITUATION EACH FOR SUITABLE USE OF

  1. A SELECTIVE HERBICIDE AND
  2. A TRANSLOCATED HERBICIDE
A
  1. 2,4-D is a selective herbicide suitable for use in lawns

2. Glyphosate is a translocated herbicide suitable for treatment of perennial weeds in a non-crop situation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

NAME THE ACTIVE INGREDIENT OF ONE PESTICIDE AND 3 WAYS OF REDUCING HARMFUL EFFECTS

A

Glyphosate

  1. use on calm day to avoid drift
  2. avoid use near water courses
  3. use morning or evening to minimise effect on pollinators
17
Q

NAME THE ACTIVE INGREDIENT OF A TRANSLOCATED HERBICIDE AND 1 WEED IT CONTROLS

A

Glyphosate for Ranunculus repens (perennial)

18
Q

NAME 2 PERENNIAL WEEDS FOUND IN A HERBACEOUS BORDER AND THEIR SPECIFIC HARMFUL EFFECT

A
  1. Calystegia sepium (bindweed) strangles plants and is unsightly
  2. Aegopodium podagraria (ground elder) invades plant roots making it difficult to lift and replant plants
  3. Ranunculus repens (creeping buttercup) roots are strong and spread among plant roots
19
Q

NAME 2 PERENNIAL WEEDS FOUND IN LAWNS

A
  1. Taraxacum officinale
  2. Bellis perennis
  3. Cirsium arvense
20
Q

NAME 2 PROBLEMS CAUSED BY WEEDS IN LAWNS

A
  1. appearance affected
  2. competition for light, water and nutrients
  3. may affect suitability as playing field
21
Q

STATE THE MEANING OF CONTACT HERBICIDE

A

A contact herbicide causes physical damage to any plant material it comes in contact with. It is not translocated to the remainder of the plant

22
Q

NAME THE ACTIVE INGREDIENT OF ONE TRANSLOCATED HERBICIDE

A
  1. Glyphosate (non-selective)

2. 2,4-D (selective)

23
Q

NAME 2 ANNUAL AND 2 PERENNIAL WEEDS

A 
Annual:
1.Poa annua
2. Veronica persica
Perennial:
1. Taraxacum officinale
2. Bellis perennis
3. Ranunculus repens
4. Aegopodium podagraria
24
Q

STATE ONE DIFFERENCE BETWEEN CONTACT AND TRANSLOCATED HERBICIDES

A

A contact herbicide damages the parts of the plant it comes into contact with
A translocated herbicide is absorbed from the leaves and travels through the stem to the root and kills the whole plant

25
Q

NAME 2 METHODS TO CONTROL EPHEMERAL WEEDS IN RECENTLY CULTIVATED SOIL

A
  1. hand picking or hoeing seedlings

2. mulching

26
Q

NAME 2 PERENNIAL WEEDS WHICH CAN PERSIST IN RECENTLY CULTIVATED SOIL

A
  1. Convovulus arvensis

2. Rubus fruticosus

27
Q

NAME 2 PLANT DISEASES THAT USE WEEDS AS ALTERNATIVE HOSTS

A
  1. white blister rust
  2. clubroot
  3. hollyhock rust
  4. potato leaf curl virus
28
Q

NAME 2 METHODS TO CONTROL EPHEMERAL WEEDS IN RECENTLY CULTIVATED SOIL

A
  1. hand picking or hoeing seedlings
  2. mulching
  3. Diquat (contact herbicide)
  4. creation of stale seed bed, allow weeds to grow after cultivation and then hoe or spray before planting/sowing
29
Q

NAME 2 PERENNIAL WEEDS WHICH CAN PERSIST IN RECENTLY CULTIVATED SOIL

A
  1. Convovulus arvensis
  2. Rubus fruticosus
  3. Aegopodium podagraria
  4. Taraxacum officinale
  5. Calystegia sepium
30
Q

NAME 2 PHYSICAL METHODS OF CONTROLLING WEEDS

A
  • hoeing
  • hand weeding
  • flaming
  • mulching
31
Q

STATE HOW A NAMED ANNUAL WEED OVERWINTERS

A

Capsella bursa-pastoris overwinters as seed

32
Q

STATE HOW A NAMED PERENNIAL WEEK OVERWINTERS

A

Taraxacum officinale overwinters as a fleshy tap root

33
Q

NAME 2 EPHEMERAL WEEDS

A
  1. Cardamine hirsuta

2. Capsella bursa-pastoris

RHS R2103 (5 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions