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55 Cards in this Set

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Turfgrass

Plants that forms a continuous ground covering, and lives with regular mowing and traffic

Turf

An interconnecting community of turfgrass

Lawn

Ground covered with turfgrass and is mowed routinely

Major Uses of Turfgrass

1.Ornamental


2.Recreational


3.Functional

3 Uses

Visual Quality of Grass

1.Color


2.Density


3.Texture


4.Uniformity


5.Growth Habits


6.Smoothness

6 Types

Color

-Measure of light reflected by turfgrass


-useful indicator of general condition of turf

Loss of Color

1.Nutritional Deficiencies


2.Pest Problems


3.Excessive Water (flood)


4.Water Deficit


5.Environmental Stress

5 Ways

Density

Increased shoot density

Texture

-Measure of width of leaf blades


-Varies between species and cultivars

Uniformity

Estimate of the even appearance of the turf

Lowers Uniformity

1.Bare Areas


2.Weeds


3.Insect Damage


4.Disease

4 ways

Functional Quality

1.Rigidly


2.Elasticity


3.Resiliency


4.Recuperated Potential


5.Verdure


6.Rooting


7.Grain


8.Yield

8 impacts

Rigidly

Resistance of turfgrass leaves to compression

Leads to Rigidity

1.Water Content


2.Temperature


3.Plant Size


4.Shoot Density


5.Plant tissue chemical composition

5 Ways

Elasticity

Tendency turfgrass has to spring back and return to its original orientation after being compressed

"Rubberband"

Impacts on Elasticity

1.Mowing


2.Equipment


3.Foot Traffic


4.Frost

4 ways

Resiliency

Capacity the turf has to absorb shock without destroying it's characteristics

Characteristics of Resiliency

1.Turf leaves and shoots


2.Thatch

Recuperative Capacity

Capacity turfgrass has to recover from damage and/or injury

Impacts on Recuperative Capacity

1.Traffic


2.Diseases


3.Insects


4.Severely Compacted Soil


5.Foot Traffic


6.Vehicular Traffic


7.Inadequate fertility or soil moisture


8.Excessive fertility or soil moisture


9.Unfavorable Temperatures


10.Insufficient light

10 ways

Verdure

Quantity of leftover alive grass after mowed

Impacts on Verdure

1.Resiliency


2.Rigidity


3.Wear Resistance

3 ways

Rooting

Amount of Root Growth present at any time during growth season

Things to look for when Rooting

1.Numerous Roots


2.White to Cream Color


3.Depth of Roots


4.Dark Tan - Brown = dying roots

4 things

Grain

-The way turfgrass grows horizontally instead of vertically


-The way grass lays after mowed

Yield

-Amount of dry matter collected from turf after mowing


-Helps measure growth rate

Growth Habit

Type of shoot growth present for a particular turfgrass

Types of Growth Habits

1.Bunch-type


2.Rhizomatous (Rhizome)


3.Stoloniferous (Stolon)

3 types

Bunch-type

-Spread primarily or exclusively by tillers


-May form small isolated clumps


-Non-uniform surface

Rhizomatous

-Rhizome - Spread by below ground shoots


-Form uniform turfs


-Aerial shoots are oriented in upright position

Stolonifous

-Stolon - Spread by above ground, lateral shoots


-Form uniform turfs


-Aerial shoots are in a horizontal position

Smoothness

-Surface Feature of turf that affects visual Quality and playability


-Measured with speed-stamp meter

Botanical Classification

Plantae (plants) - Kingdom


Embroyophyta (embryo plants) - Division


Phanaerogama (seed plans) - Subdivision


Angiospermae (seed enclosed in ovary) - Branch

Kingdom, Division, Subdivision, Branch

Angiosperms

-Flowering plants


-In contrast to gymnosperms such as pines and cedars (cones)

Classes

-Monocotyledon = monocots, grass like plants


-Dicotyledon = dicots, broadleaf plants

Grasses (Poaceae)

1.Leaves arranged in ranks or 2


2.Legules present (small membranes)


3.stems cylindrical or flattened; hollowed or solid


4.Conspicuous nodes

4 characteristics

Sedges (Cyperaceae)

1.Leaves arranged in ranks of 3


2.Ligules absent


3.Stems triangular


4.Inconspicuous nodes


4 characteristics

Rushes (Juncaceae)

1.Leaves arranged in ranks of 3


2.Ligules present


3.Stems round


4.Inconspicuous Nodes

4 characteristics

Adaptation of Turfgrasses

-Close grazing of grasslands (close mowing)


-Grasses with short internodes and prostate


-Growth habit developed (lower dense grass)

Native Grasses

Grasses that originate and persistent in a specific region

Naturalized Grasses

Grasses from another region that established and adapted to its new region

Annuals

Normally live only for 1 growing season


(Annual Rye Grass)

Biennials

Complete normal life in 2 years (Weeds)


Sometimes annuals will survive 2nd year

Perennials

Live for more than 2 years


True perennials will live indefinitely

Short Lived Perennials

Turfgrasses that die within 2-4 years

Festcoideae

1.Cool season species


2.Adapted to temperate, subartic and sometimes subtropical climates


3.Considered C3 grasses

3 Chacteristics (Sub-Family)

Festuceae Tribe (Festucoideae)

1.Fescues *


2.Bluegrasses *


3.Ryegrasses *


4.Bromegrasses


5.Alkaligrasses

5 Grasses

Avenceae Tribe (Festucoideae)

1.Bentgrass *


2.Redtop


3.Timothy

3 types

Triticeae Tribe (Festucoideae)

Wheatgrass

1 type

Eragrostoideae

1.Warm season species


2.Adapted to warm temperate, tropical and subtropical climates; adapted to arid/semi-arid regions within climates


3.Considered C4 grasses

3 Characteristics (Sub-Family)

Chloriceae Tribe (Eragrostoideae)

1.Bermuda Grasses *


2.Buffalo Grass


3.Gramagrasses

3 types

Zoysiceae Tribe (Eragrostoideae)

Zoysia Grasses

1 type

Panicoideae

1.Warm season species


2.Adapted to tropical and sub-tropical climates


3.Considered C4 grasses

3 Characteristics (Sub-Family)

Paniceae Tribe (Panicoideae)

1.Carpet Grass


2.Bahiagrass *


3.Seashore Paspalum


4.Kikuyugrass


5.St. Augustine Grass *

5 types

Andropogoceae Tribe (Panicoideae)

1.Centipedegrass

1 type