Weed control

Question 1

Three different types of herbicide:

Answer 1

Contact

Selective

Translocated (systemic)

Question 2

Define Contact herbicide & active ingredient

Answer 2

Acts locally where it touches the plant

e.g. clearing annuals or ephemerals on freshly cultivated ground

Acetic acid

Question 3

Define Selective herbicide & active ingredient

Answer 3

Targets certain weed types (hormone-based)

e.g. broad-leaved weeds in lawns

2, 4-D

Question 4

Define Translocated (Systemic) herbicide & active ingredient

Answer 4

Applied to soil and leaves - taken up and travels through vascular system

e.g. clearing perennial weeds (repeat applications!)

Glyphosate (“Roundup”)