lecture 4

Question 1

What are the Sedges that we deal with the most on the East Coast?

Answer 1

Yellow Nutsedge

Purple Nutsedge

Green Kylinga

Question 2

Describe the leaves of Sedges

Answer 2

Triangular, smooth

Question 3

Sedges are highly aggressive in what environments?

Answer 3

• Wet sites with immature turf
• seedbeds

Question 4

What sedge has underground tubers?

Answer 4

Yellow nutsedge

Question 5

What is the growth habit of Green Kylings?

Answer 5

Rhizometous

Question 6

How does Kylinga reproduce?

Answer 6

Rhizomes and seed

Question 7

How does Yellow nutsedge reproduce?

Answer 7

Tubers and Seed

Question 8

When do NTS and Kylings germinate?

Answer 8

April and May

(Emergence occurs all summer)

Question 9

Why is it difficult to control YNS and Kylinga with Pre-emergent herbicides?

Answer 9

• They continue to emerge from early spring through the summer. pre emergent control only lasts 6-8 weeks

Question 10

Tenacity is safe to spray on all C3 grass seedbeads to control YNS/Kylings…..except _______grass.

Answer 10

Bentgrass

Question 11

What is the safest herbicide choice to control YNS and Kylinga on bentgrass?

Answer 11

Sedgehammer

Question 12

DIsmiss works well on warm season grasses…how is it on cool season turf?

Answer 12

• It’s a slower, longer process because the application rate is much lower in C3 grasses.

Question 13

At what intervals do you want to spray for kylinga/YNS?

When do you start?

Answer 13

• 2 Applications on a 4 to 6 week interval
• Starting in late June, early July

Question 15

What is an aggressive tactic when trying to control Bentgrass in areas with other C3 turf species. What are some cosiderations needed before applying it?

Answer 15

• • Mesotrione (Tenacity) Mixed With Triclopyr (Turflon Ester ) Is Highly Effective and Safe To Use On Most Cool-Season Grasses Including Tall Fescue, Fine-Leaf Fescues, Kentucky Bluegrass and Perennial Ryegrass
• Very Effective, only use if <20% bentgrass in stand.
• – Safety and Effectiveness Can Only Be Assured With High Pressure (30psi) Sprayers Equipped With Flat-Fan Nozzles
• – Mesotrione is too injurious when used with a hand pump sprayer

Question 16

How does Poa Trivialis spread?

Answer 16

Stolons/seed

Question 17

Does Roughstalk Bluegrass do well in the heat?

Answer 17

no, it hates hot temps. loves the shade.

Question 18

How does Velocity perform against Poa triv?

Answer 18

• knocks it back but doesn’t kill it
• It acts like a PGR for Poa triv

Question 19

What are some selective herbicide options when managing PRG and TF.

Answer 19

• – Chlorsulfuron (Corsair)
• – Metsulfuron (Manor)

Question 20

Field Paspalum and Dallisgrass can be controlled using what standard treatment?

Answer 20

• Spot Treatment with MSMA

Question 21

What is a very effective spray for controlling Bermuda in cool season turfs?

Answer 21

• Acclaim Extra and Turflon Ester

Question 22

what is the best spray option to control Nimblewill?

Answer 22

Tenacity with Turflon Ester

Question 23

What is the biggest issue when maintaining Fine Fescue rough areas?

What is the best way to control it?

Answer 23

• Weeds
• Spot treat with Glyphosate, hand gun, machette