turf 1 review, Weed ID & Poa Annua Control

Question 1

What are the 3 classes of weeds?

Answer 1

Grassy, Broadleaf and Sedges

Question 2

What is a way to determine if a plant is a monocot or dicot by looking at them?

Answer 2

Monocot has 1 first leaf

Dicot has 2 first leafs

Question 3

What kind of leaf veins to grassy weeds have?

Answer 3

Paralell leaf veins

Question 4

Grasses, Sedges and Rush are all examples of a Dicot or Monocot?

Answer 4

Monocot

Question 5

“broadleaf” plants are Dicots or Monocots?

Answer 5

Dicots

Question 6

What type of weed has a triangular, solid stem?

Answer 6

Sedge

Question 7

Name 2 types of Sedge

Answer 7

Nutsedge

Kyllinga

Question 8

Are Sedges annuals or Perennials?

Answer 8

Perennials

Question 9

Broadleafs can be either Annual or Perennial.

True or False?

Answer 9

True

Question 10

describe the life cycle of a summer annual weed

Answer 10

germinates in spring

grows in summer

dies in fall

Question 11

describe the life cycle of winter annual weeds

Answer 11

germinates in fall

grows in spring

dies in summer

Question 12

What does Biennial mean?

Answer 12

takes 2 years from seed to seed

–Vegetative structure the first year

–Reproductive structure the second year

Question 13

What is the difference between simple and complex perennials?

Answer 13

Simple = produce a taproot, spread only by seed

Complex - Can reproduce by buds, rhizomes, tubers, bulbs and seed

Question 14

give 2examples of weeds thatproduce aerial bulblets to reproduce.

Answer 14

Wild onion

Wild garlic

Question 15

What are the three different names a product can have?

Answer 15

Trade Name

Generic Name

Chemical Name

Question 16

after applyinga pre-emergent herbicide, how long do you usually have to wait to put seed down?

Answer 16

2 to 6 months

Question 17

When do you apply pre-emergent herbicides?

Answer 17

2 weeks prior to weed seed germination

(15th of April + or - 1 week depending on the region)

Question 18

You need to water in your pre-emergent herbicide within ______ hours.

Answer 18

72

Question 19

What is a great way to improve the control and cosistency of your pre-emergent application?

Answer 19

Split applications, 6 - 8 weeks apart

Question 20

What is a split application?

Answer 20

Take the High rate and split it in half

put down both applications 6-8 weeks apart

Question 21

how are post emergent herbicides usually taken into the plant?

Answer 21

mostly foliar uptake

Question 22

What are the two types of post emergent herbicide?

Answer 22

Broadleaf and Grassy

Question 23

When does Poa Annua usually germinate?

Answer 23

In the Fall,

After the first major rain event folowing Labor Day.

Question 24

What classification of weed is Poa Annua?

Answer 24

Winter Annual

Question 25

What is the strongest goosegrass herbicide on the market?

Answer 25

Ronstar

Question 26

What does Dimension herbicide not have good control of?

Answer 26

Goosegrass

Question 27

What herbicide is safe to spray for crabgrass in areas with seedlings?

Answer 27

Tupersan

Question 29

What is a product that is okay to use on putting greens for crab and goosegrass control?

Answer 29

Scotts Crab and Goosegrss Preventer

Question 30

describe the charecteristics of the annual biotype of Poa annua...

Answer 30

* Yellowish - green color * Prolific seed producer

Question 31

What are the characteristics of the Perennial biotype of Poa annua?

Answer 31

* Dark green color * Few seedheads

Question 32

Name some herbicides that are effective on grassy weeds.

Answer 32

* Drive * Acclaim * Pylex * MSMA * Tenacity * Dimension

Question 33

What are 3 Pre-emergent herbicides that are efective on grassy annual weeds on cool season turf?

Answer 33

Barricade Dimension Pendulum

Question 34

What herbicide must be tank mixed with seed oil?

Answer 34

Drive

Question 35

Acclaim Extra is used on Broadleaf weeds not Grassy weeds. True or False?

Answer 35

False. It is used on grassy weeds, not broadleaf weeds

Question 36

Creeping Bentgrass cannot competewith Poa annua in locations that have what conditions?

Answer 36

In Shady, poorly drained and compacted sites.

Question 37

What are some cultural approaches to Poa annua suppression?

Answer 37

* Improve Sunlight and Water & Air Drainage * Light Weight Mowers/Reduced Compaction * Clipping Removal When Poa Is Seeding * Core Prior To Peak Germination Periods * Avoid Nitrogen From Late Autumn To Spring * Spoon Feed With Nitrogen In Summer * Irrigate Deeply , But Infrequently * Avoid Controlling Diseases Specific To P.annua Where Populations Are Low (e.g.,anthracnose, summer patch)

Question 38

How many hours of sun a day should you strive for to promote bentgrass growth on greens?

Answer 38

8 - 12 hours of sunlight

Question 39

What is the difference in the time of Poa vs. crabgrass and goosegrass?

Answer 39

Poa is a winter annual that germinates in the fall, grows i the spring and dies in the summer. Crab / Goosegrass are summer annuals, they germinate in the spring, grow in the summer and die in the fall

Question 40

How would classify the “annual nature” of Poa based on emergence time?

Question 41

Is Poa annua a C-3 or C-4 plant?

Answer 41

C-3

Question 42

When would you apply a pre-emergent to target Poa annua?

Answer 42

In the Fall