WEEDS Flashcards
NAME 2 DISTINCT ANNUAL WEEDS
- Veronica persica
- Poa annua
- Chenopodium album
- Galium aparine
NAME 2 PERENNIAL WEEDS FOUND COMMONLY IN WOODY PERENNIAL PLANTINGS
- Calystegia sepium (bindweed)
- Rubus fruticosus (bramble)
- Aegopodium podagraria (ground elder)
- Convolvulus arvensis (field bindweed)
- Ranunculus repens (creeping buttercup)
- Aegopodium podagraria (ground elder)
DESCRIBE 4 PROBLEMS CAUSED BY PERENNIAL WEEDS IN WOODY PERENNIAL PLANTINGS
- compete for light, water and nutrients
- may distort the growth of cultivated species
- unsightly
- can be difficult to remove
- potential for damage to plants by translocated herbicides
- may introduce pest or disease
STATE A NAMED HERBICIDE FOR A NAMED PERENNIAL WEED IN A WOODY PERENNIAL PLANTING AND ITS MODE OF ACTION
Glyphosate
translocated mode of action
effective against Aegopodium podagraria
DESCRIBE WHAT IS MEANT BY A WEED
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
NAME 2 TYPES OF WEEDS FOUND IN RECENTLY CULTIVATED SOIL
Annual and ephemeral weed seeds are brought to the surface and light by cultivation
NAME 2 TYPES OF WEEDS FOUND IN LAWNS
Annual weeds and rosette forming, stoloniferous and tap rooted perennial weeds that can survive repeated mowing
NAME 2 WEEDS FOUND IN LAWNS
- Poa annua (annual)
- Ranunculus repens (perennial)
- Taraxacum officinale (perennial)
- Bellis perennis (perennial)
NAME 2 WEEDS FOUND IN RECENTLY CULTIVATED SOIL
- Cardamine hirsuta (ephemeral)
- Senecio vulgaris (ephemeral)
- Stellaria media (ephemeral)
- Veronica persica (annual)
NAME 2 WEEDS THAT CAN ACT AS ALTERNATE HOSTS FOR SPECIFIC PLANT PATHOGENS
- Senecio vulgaris for rust
- Capsella bursa-pastoris (white blister rust and club root in brassicas)
- Solanum nigrum (moth affecting solanum lycopersicum and potato cyst eelworm)
- Tropaeolum for large cabbage white butterfly
DESCRIBE THE MODE OF ACTION AND SPECIFIC USE OF RESIDUAL HERBICIDE
A chemical absorbed by emerging plants or seedlings at or below soil level.
e.g. Diflufenican
DESCRIBE THE MODE OF ACTION AND SPECIFIC USE OF A SELECTIVE HERBICIDE
A selective herbicide is effective against the weed (e.g. dicot) without affecting the desired plant (e.g. monocot grass)
NAME THE ACTIVE INGREDIENT OF A CONTACT HERBICIDE AND 2 WEEDS IT CONTROLS
Diquat for Cardamine hirsuta (ephemeral)
NAME THE ACTIVE INGREDIENT OF A TRANSLOCATED HERBICIDE AND 2 WEEDS IT CONTROLS
Glyphosate for Ranunculus repens (perennial)
DESCRIBE ONE SITUATION EACH FOR SUITABLE USE OF
- A SELECTIVE HERBICIDE AND
- A TRANSLOCATED HERBICIDE
- 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
NAME THE ACTIVE INGREDIENT OF ONE PESTICIDE AND 3 WAYS OF REDUCING HARMFUL EFFECTS
Glyphosate
- use on calm day to avoid drift
- avoid use near water courses
- use morning or evening to minimise effect on pollinators
NAME THE ACTIVE INGREDIENT OF A TRANSLOCATED HERBICIDE AND 1 WEED IT CONTROLS
Glyphosate for Ranunculus repens (perennial)
NAME 2 PERENNIAL WEEDS FOUND IN A HERBACEOUS BORDER AND THEIR SPECIFIC HARMFUL EFFECT
- Calystegia sepium (bindweed) strangles plants and is unsightly
- Aegopodium podagraria (ground elder) invades plant roots making it difficult to lift and replant plants
- Ranunculus repens (creeping buttercup) roots are strong and spread among plant roots
NAME 2 PERENNIAL WEEDS FOUND IN LAWNS
- Taraxacum officinale
- Bellis perennis
- Cirsium arvense
NAME 2 PROBLEMS CAUSED BY WEEDS IN LAWNS
- appearance affected
- competition for light, water and nutrients
- may affect suitability as playing field
STATE THE MEANING OF CONTACT HERBICIDE
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
NAME THE ACTIVE INGREDIENT OF ONE TRANSLOCATED HERBICIDE
- Glyphosate (non-selective)
2. 2,4-D (selective)
NAME 2 ANNUAL AND 2 PERENNIAL WEEDS
Annual: 1.Poa annua 2. Veronica persica Perennial: 1. Taraxacum officinale 2. Bellis perennis 3. Ranunculus repens 4. Aegopodium podagraria
STATE ONE DIFFERENCE BETWEEN CONTACT AND TRANSLOCATED HERBICIDES
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
NAME 2 METHODS TO CONTROL EPHEMERAL WEEDS IN RECENTLY CULTIVATED SOIL
- hand picking or hoeing seedlings
2. mulching
NAME 2 PERENNIAL WEEDS WHICH CAN PERSIST IN RECENTLY CULTIVATED SOIL
- Convovulus arvensis
2. Rubus fruticosus
NAME 2 PLANT DISEASES THAT USE WEEDS AS ALTERNATIVE HOSTS
- white blister rust
- clubroot
- hollyhock rust
- potato leaf curl virus
NAME 2 METHODS TO CONTROL EPHEMERAL WEEDS IN RECENTLY CULTIVATED SOIL
- hand picking or hoeing seedlings
- mulching
- Diquat (contact herbicide)
- creation of stale seed bed, allow weeds to grow after cultivation and then hoe or spray before planting/sowing
NAME 2 PERENNIAL WEEDS WHICH CAN PERSIST IN RECENTLY CULTIVATED SOIL
- Convovulus arvensis
- Rubus fruticosus
- Aegopodium podagraria
- Taraxacum officinale
- Calystegia sepium
NAME 2 PHYSICAL METHODS OF CONTROLLING WEEDS
- hoeing
- hand weeding
- flaming
- mulching
STATE HOW A NAMED ANNUAL WEED OVERWINTERS
Capsella bursa-pastoris overwinters as seed
STATE HOW A NAMED PERENNIAL WEEK OVERWINTERS
Taraxacum officinale overwinters as a fleshy tap root
NAME 2 EPHEMERAL WEEDS
- Cardamine hirsuta
2. Capsella bursa-pastoris
