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Weeds
lecture 8
| Question | Answer |
|---|---|
| A weed is | a plant in the wrong place |
| annual weeds include | fat hen, resdhank, nettle |
| monocot weeds are | grass, rushes, sedges |
| an ephemeral is a plant which | completes more than one lifecycle in one year |
| a biennial plant | completes its life cycle in two years |
| ragwort is a | biennial noxious weed which causes an accumulation of copper in the liver |
| a perennial plant is a plant which | lives for more than two years |
| allelopathy is | the chemical inhibition of one plant by another |
| seeds are dispersed by | wind, water, animals and self |
| a plant which hosts potato virus Y is | the nightshade |
| Tillage weeds include | oats, willow herb and sow thistle |
| forestry weeds include | Rhododendron and laurel |
| Horticultural weeds include | scutch grass and rosebay willow herb |
| sports turf weeds include | meadow grass |
| weed control can be either | Physical, biological or chemical |
| physical methods of weed control include | covering the weeds, burying the weeds and mowing |
| biological method of weed control include | grazing and using competitive plants |
| chemical methods of weed control include | contact, residual and systemic weedkillers |
| Non native invasive species include | Japenese Knotweed and Giant Hogweed |
Created by:
MKHealy
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