Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.
Didn't know it?
click below
Knew it?
click below
Don't know
Remaining cards (0)
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how


lecture 8

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



Use these flashcards to help memorize information. Look at the large card and try to recall what is on the other side. Then click the card to flip it. If you knew the answer, click the green Know box. Otherwise, click the red Don't know box.

When you've placed seven or more cards in the Don't know box, click "retry" to try those cards again.

If you've accidentally put the card in the wrong box, just click on the card to take it out of the box.

You can also use your keyboard to move the cards as follows:

If you are logged in to your account, this website will remember which cards you know and don't know so that they are in the same box the next time you log in.

When you need a break, try one of the other activities listed below the flashcards like Matching, Snowman, or Hungry Bug. Although it may feel like you're playing a game, your brain is still making more connections with the information to help you out.

To see how well you know the information, try the Quiz or Test activity.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards