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Weeds 2 > turf 1 review, Weed ID & Poa Annua Control > Flashcards

turf 1 review, Weed ID & Poa Annua Control Flashcards

1
Q

What are the 3 classes of weeds?

A

Grassy, Broadleaf and Sedges

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2
Q

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

A

Monocot has 1 first leaf

Dicot has 2 first leafs

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3
Q

What kind of leaf veins to grassy weeds have?

A

Paralell leaf veins

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4
Q

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

A

Monocot

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5
Q

“broadleaf” plants are Dicots or Monocots?

A

Dicots

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6
Q

What type of weed has a triangular, solid stem?

A

Sedge

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7
Q

Name 2 types of Sedge

A

Nutsedge

Kyllinga

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8
Q

Are Sedges annuals or Perennials?

A

Perennials

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9
Q

Broadleafs can be either Annual or Perennial.

True or False?

A

True

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10
Q

describe the life cycle of a summer annual weed

A

germinates in spring

grows in summer

dies in fall

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11
Q

describe the life cycle of winter annual weeds

A

germinates in fall

grows in spring

dies in summer

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12
Q

What does Biennial mean?

A

takes 2 years from seed to seed

–Vegetative structure the first year

–Reproductive structure the second year

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13
Q

What is the difference between simple and complex perennials?

A

Simple = produce a taproot, spread only by seed

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

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14
Q

give 2examples of weeds thatproduce aerial bulblets to reproduce.

A

Wild onion

Wild garlic

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15
Q

What are the three different names a product can have?

A

Trade Name

Generic Name

Chemical Name

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16
Q

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

A

2 to 6 months

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17
Q

When do you apply pre-emergent herbicides?

A

2 weeks prior to weed seed germination

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

18
Q

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

A

72

19
Q

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

A

Split applications, 6 - 8 weeks apart

20
Q

What is a split application?

A

Take the High rate and split it in half

put down both applications 6-8 weeks apart

21
Q

how are post emergent herbicides usually taken into the plant?

A

mostly foliar uptake

22
Q

What are the two types of post emergent herbicide?

A

Broadleaf and Grassy

23
Q

When does Poa Annua usually germinate?

A

In the Fall,

After the first major rain event folowing Labor Day.

24
Q

What classification of weed is Poa Annua?

A

Winter Annual

25
Q

What is the strongest goosegrass herbicide on the market?

A

Ronstar

26
Q

What does Dimension herbicide not have good control of?

A

Goosegrass

27
Q

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

A

Tupersan

28
Q
A
29
Q

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

A

Scotts Crab and Goosegrss Preventer

30
Q

describe the charecteristics of the annual biotype of Poa annua…

A
  • Yellowish - green color
  • Prolific seed producer
31
Q

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

A
  • Dark green color
  • Few seedheads
32
Q

Name some herbicides that are effective on grassy weeds.

A
  • Drive
  • Acclaim
  • Pylex
  • MSMA
  • Tenacity
  • Dimension
33
Q

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

A

Barricade

Dimension

Pendulum

34
Q

What herbicide must be tank mixed with seed oil?

A

Drive

35
Q

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

A

False.

It is used on grassy weeds, not broadleaf weeds

36
Q

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

A

In Shady, poorly drained and compacted sites.

37
Q

What are some cultural approaches to Poa annua suppression?

A
  • 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)
38
Q

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

A

8 - 12 hours of sunlight

39
Q

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

A

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

40
Q

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

A
41
Q

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

A

C-3

42
Q

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

A

In the Fall

Weeds 2 (4 decks)

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