Quiz 1: Common weeds S/A

Question 1

what is a weed

Answer 1

any plant growing where its not wanted

Question 2

name 4 reasons to get rid of weeds

Answer 2

1. disfigure lawn
2. interfere with crop production/ decreases yield/ quality palatability
3. poison livestock
4. discomfort to humans through contact or inhalation
5. often carrier of other diseases, fungi bacteria

Question 3

describe annual weeds, give 2 examples

Answer 3

-germinate, bloom and reproduce then die in one growing season
ex smooth crabgrass, spotted spurge, black medick,prostrate knotweed, lady’s thumb, purslane,

Question 4

describe winter annual weeds, give 2 examples

Answer 4

• germinate and produce leafy rossette in fall, bloom seed and die following summer
  ex. garlic mustard

Question 5

describe biennial weeds, give 2 examples

Answer 5

-germinate and grow leafy rossette in first growing season, flower, reproduce and die second season
ex Burdock

Question 6

describe herbaceous perennial weeds

give 1 example

Answer 6

• live many years, develop each year from underground stems, roots or crowns and usually reproduce each year; dieback to ground each winter
  ex. field bindweed, field horsetail, ground ivy, broad- leaved plantain, dandelion

Question 7

describe woody perennial weeds

give 1 ex

Answer 7

trees, shrubs and woody vines that produce new growth each year from above ground branches, stems and twigs, occasionally underground stems, roots or crowns
ex climbing nightshade

Question 8

name 3 ways weeds can be controlled?

Answer 8

1. mulch- 2.5” res, 4” rural
2. pulling by hand
3. thermal- flaming or hot water

Question 9

name1 weeds that grow in compacted grass

Answer 9

2. knotweed

Question 10

name 1 weeds that grow in sandy soil

Answer 10

2. horse tails

Question 11

name 1 weed that grows in poorly drained soil

Answer 11

1. plantain

Question 12

name 3 weeds that grow in infertile soil

Answer 12

3. black medic
4. crabgrasses
5. plantain

Question 13

name 2 weeds that grow in acidic soil

Answer 13

2. plantains

3. many mosses

Question 14

name 3 edible weeds

Answer 14

1. Purslane
2. Garlic Mustard
3. Dandelion

Question 15

where does Alliaria petiolata grow? how do you get rid of it?

Answer 15

a) moist woods, swampy areas, ditches/ roadside Southern ON

b) easy; pull by hand

Question 16

where does Arctium minus grow? how do you get rid of it?

Answer 16

a) mostly naturakl areas, rarely cultivated land

b) easy to pull- do so before seeds

Question 17

where does Convolvulus arvensis grow? how do you get rid of it?

Answer 17

a) cultivated fields, gardens, lawns, roadside, waste

b) impossible to eliminate,, best control by hoeing and tiling

Question 18

where does Digitaria ischaemum grow? how do you get rid of it?

Answer 18

a) crops, waste, edges gardens and lawns ( infertile)

b) easy–> remove my hand

Question 19

where does Equisetum arvense grow? how do you get rid of it?

Answer 19

a) depressional areas, poorly drained soils, sand, gravel, crops
b) hard –> by hand

Question 20

which weeds on list are toxic?

Answer 20

1. Equisetum arvense

2. Solanum dulcamara

Question 21

where does Euphorbia nutans grow? how do you get rid of it?

Answer 21

a) cultivated land, gardens, waste and roadside

b) easy - pull by hand

Question 22

where does Glechoma hederacea grow? how do you get rid of it?

Answer 22

a) gardens, roadside, waste, pasture, open woods, ocas. cultivated fields
b) hard –> cultivated and re-sod

Question 23

where does Medicago lupulina grow? how do you get rid of it?

Answer 23

a) moist areas, usually lawns

b) by hand, topicals not effective

Question 24

where does Plantago major grow? how do you get rid of it?

Answer 24

a) cultivated land, pasture, waste, roadside, lawns

b) weed b gone, hand pull

Question 25

where does Polygonum aviculare grow? how do you get rid of it?

Answer 25

a) gravel soil, full sun little moisture

b) shallow roots, effective by hand

Question 26

where does Polygonum persicaria grow? how do you get rid of it?

Answer 26

a) cultivated land, roadsides, waste areas

b) by hand- easy

Question 27

where does Portulaca oleracea grow? how do you get rid of it?

Answer 27

a) little moisture, crops, waste, driveway edges, NOT heavy shade
b) pull

Question 28

where does Solanum dulcamara grow? how do you get rid of it?

Answer 28

a) open woods, edge of fields, fence lines, roadsides, ocas. hedges and gardens
b) easy to dog out by hand

Question 29

where does Taraxacum officinale grow? how do you get rid of it?

Answer 29

a) anywhere

b) easy to get rid out, must ensure remove tap root by hand

Question 30

t or f : any plant can be a weed

Answer 30

true; any plant that is unwanted or out of place

Question 31

t or f ; weeds are harmless

Answer 31

false; deprive other plants of water and nutrients, cause allergies and irritate, economic loss via crops

Question 32

t or f; all weeds die naturally after first frost

Answer 32

false; weeds can be annual, biennial, perennial - can leave behind seeds to take their place following season

Question 33

t or f; weeds are especially adapted to spread

Answer 33

true

Question 34

t or f; weeds produce the same number of seeds as grass and ornamental plants

Answer 34

false; weed 10 000-100 000 seeds

most plants 100s