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Weeds

lecture 8

QuestionAnswer
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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