WEEDS COPY 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