Weeds

Question 1

List the 5 categories of weeds:

Answer 1

Grasses, sedges, mosses/algae, woody broad-leaf weeds, herbaceous broad-leaf weeds

Question 2

Identify the importance of indicator weeds:

Answer 2

indicator weeds let you know what the problem is and if it can be fixed culturally or not

Question 3

List 7 characteristics to consider when selecting an herbicide

Answer 3

pre-emergent/post-emergent, selective/non-selective, contact/systemic, modes of action, amines/esters, combination products, adjuvant use

Question 4

describe the damage weeds can cause in a landscape

Answer 4

weeds compete for nutrients, inhibit other plants from growing, poison or irritate people and animals

Question 5

List what weed groth stages provide the greatest level of herbicide control for annual and perennial species:

Answer 5

annual: germination, when plant is still small

Perennial: in the fall, post-emergence

Question 6

Identify where minnesota noxious weed information is posted

Answer 6

MDA website http://www.mda.state.mn.us/plantsbadplants/noxiouslist.aspx

Question 7

Define control list

Answer 7

prohibited noxious weeds for which efforts must be made to prevent the spread, maturation, and dispersal of any propagating parts

Question 8

Define Eradicate list

Answer 8

prohibited noxious weeds for which all above and below ground parts must be destroyed

Question 9

Define Invasive

Answer 9

plants that are not native to MN and can cause economic or environmental harm or harm to human health

Question 10

Define Noxious weeds

Answer 10

plants that mn statute identifies as harmful to public health, the environment, public roads, crops, livestock, and other property

Question 11

Define Seed dispersal

Answer 11

movement of the reproductive units of a flowering plant away from parent plant

Question 12

Define Vegetative propagation

Answer 12

asexual plant reproduction

Question 13

Define Weed

Answer 13

plant out of place, unwanted plant