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Transcript of Lawn Care - Franklin · Grass Clipping = 1/3 Turf’s Annual Nitrogen Needs Mulching Mower Compost...
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Lawn Care Pamela J. Sherratt
The Ohio State University
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Terminology – it’s confusing! Organic, natural, sustainable • Pesticide • Biopesticide • Organic pesticide Chemical (118 elements, compounds etc.) Fertilizer (natural and synthetic – organic?)
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It’s a Personal Choice - Not Mandated in OH -
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Both of these lawns are pesticide-free!
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Pest, Disease
and Weed Management
Healthy Soil
Fertility * Mowing * Irrigation * Grass Selection Thatch Management * Core Cultivation *
Turfgrass Maintenance
BEST MANAGEMENT
PRACTICES (IPM)
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IMPROVING SOIL HEALTH
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Soil Tests
• Measurement of plant available nutrient status of the soil – Identifies nutrient deficiencies – Predicts nutrient requirements
• Can detect nutrient imbalances, excess salts
• Other factors (CEC, OM level, pH)
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When to Sample
• Perform every 2-3 years on soil – Perform yearly on high sand (>85%) – Be consistent with sampling procedure
• Timing - spring or fall
– Prior to fertilization – Sample at same time of year
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Grass won’t grow in poor, compacted soil
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Aeration
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TARGET = 12 – 15 holes per sq.ft.
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Thatch Control
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- Topdressing - Filling in holes & undulations
• Topsoil • Compost & topsoil • 0.25” – 3/8” depth, or as needed
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Composts • Yard waste • Biosolid • Spent mushroom
compost • Manures • Food waste • www.findacomposter.com
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Choosing a compost, physical & chemical properties
Color Brown to black
Odor Like earth
Particle size for topdressing ¼ to 3/8 inch
Moisture content 30 to 50%
Organic matter Greater than 30%
Ash content less than 70%
c/n ratio Below or equal to 30:1
Nitrogen 0.5 to 3%
Phosphorus Greater than 0.2%
pH 6.0-7.0
Metals Determined by state or federal agencies
Soluble salts Depending on turf species, type of salt, concentration, and application method
Ref: Penn State Plant Science, Using Composts to Improve Turf Performance
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Application of biosolid compost topdressing @ 0.25” depth
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Renovation: Killing the lawn & starting again
• Soil cultivation • Using covers
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The main advantages to renovation:
• Better grass selection
• Soil amendment & re-grading
• Nutrient status correction
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Adding Compost
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Right Grass, Right Place Tall & fine fescues Kentucky bluegrass Perennial ryegrass
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PERCENTGENETIC SPRING COVER QUALITY RATINGS
NAME COLOR GREENUP FALL MAR APR MAY JUN JUL AUG SEP MEAN
COURTYARD 8.3 7 60 7 5.3 5.7 7.3 6.7 5.7 4 6PST-161 8.3 7.3 33.3 7.3 6.7 6.7 7 5.3 5 4 6
SKYE 7.7 6.7 33.3 6.7 7 6.7 6.7 6 6 3.3 6CABERNET 7.7 7.3 46.7 7.3 6.7 6.3 6.3 6 5 3.7 5.9EXCURSION 7.7 6.7 35 6.7 5.7 6 7.3 6 5.7 3.7 5.9
RAMBO 7.7 7.7 43.3 7.7 6.7 6 6.3 5.7 5.3 3.3 5.9BARONETTE 8.3 7.3 21.7 7.3 6 6 6.7 5.7 6 3 5.8BARRISTER 7.7 6.7 50 6.7 5.7 6 7 6 5 4 5.8
DLF 7 6.3 40 6.3 6.3 5.3 6.7 6.3 5.3 4.3 5.8IMPACT 8.3 7 43.3 7 6 5.3 7.7 6 4.7 3.7 5.8
TOTAL ECLIPSE 7.3 7 16.7 7 5.3 6.3 7 6 5.3 3.3 5.8A96-739 7.3 7.7 10 7.7 6.3 6.7 6 5 5.7 2.3 5.7AWARD 7.7 6.7 33.3 6.7 5.3 5.7 7.3 5.7 5 4 5.7
JEFFERSON 7.3 7.3 28.3 7.3 6.7 5.7 6.7 5.3 5.3 3 5.7ARCADIA 7.3 6.7 18.3 6.7 5.3 5.3 7.3 6 5.7 3 5.6
www.ntep.org
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Tall Fescue (Festuca arundinacea)
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OLD type – “Kentucky 31”
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IMPROVED/TURF-TYPE TALL FESCUE
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WEAR TOLERANCE
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•Wear tolerant
•Drought resistant
•Endophytes
•Low maintenance
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Best in Shade
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Kentucky Bluegrass Tall Fescue
Best for Low Input Lawns
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Best in Drought
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Brown Patch Disease (Rhizoctonia solani)
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Fine Fescue (Festuca sp.)
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Tolerates, poor soils, poor fertility, & shade
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Poor wear tolerance Dormancy in hot weather
Susceptible to some diseases
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Kentucky Bluegrass (Poa pratensis)
Rhizome
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Kentucky bluegrass dormancy during drought
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NOT SHADE TOLERANT
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Can survive 6-8 week drought
Hydrated crown?
KENTUCKY BLUEGRASS
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Kentucky Bluegrass Tall Fescue
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PERENNIAL RYEGRASS
(Lolium perenne)
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USES:
Mixed with Kentucky bluegrass
50:50
80:20
75:25
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5 days after seeding
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20 days after seeding
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Can compete with spring weeds (crabgrass)
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No. 1: Diseases
Disadvantages
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Brown Patch
Pythium
Red Thread
Rust
Dollar Spot
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Avoid annual (Italian) ryegrass
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Beware annual ryegrass!
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Annual ryegrass in July
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When to Seed Cool Season Turf
Difficult
With Organic
Ideal
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Spring Seeding: No
Weed Control
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Fall Seeding of Cool Season Turf •August 15 – September 15
– Turfgrasses are more competitive – Warm season weeds (e.g. crabgrass) are at
the end of their life cycle – Germinating grasses require warm soil
temperatures, but are intolerant of summer heat
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Seed Bed Preparation
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Choosing the Right Seed
• Purchase high quality seed from reputable dealers only
• Read and understand the seed label
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Seed Label Desirable crop species • Seed quality is influenced by purity and germination germ % x purity % = %Pure Live Seed (PLS) 100
• Seeding rate should be based on PLS • Note the date germination was tested Undesirables not grown as a farm crop Anything not seed (soil, stems, etc.) Other plants normally grown for profit • Often the most difficult weeds to control Weeds officially declared special problems
Seed Mixture Analysis Fine Textured Grasses 26.24% Glade Kentucky Bluegrass 24.00% Park Kentucky Bluegrass 18.45% Midnight Kentucky Bluegrass Coarse Grasses 27.81% Pennfine Perennial Ryegrass Other Ingredients 0.45% Weed Seed 3.00% Inert Matter 0.05% Other Crop No Noxious Weeds
Germ. 95% 90% 85% 92% Tested 4/95 50# Net wt. Seed Company Address
Desirable Grasses
Undesirables
not grown as a
farm crop
Anything not
seed (stems, soil,
etc.) Other plants normally grown for
profit (often the worst weeds!)
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PERCENTGENETIC SPRING COVER QUALITY RATINGS
NAME COLOR GREENUP FALL MAR APR MAY JUN JUL AUG SEP MEAN
COURTYARD 8.3 7 60 7 5.3 5.7 7.3 6.7 5.7 4 6PST-161 8.3 7.3 33.3 7.3 6.7 6.7 7 5.3 5 4 6
SKYE 7.7 6.7 33.3 6.7 7 6.7 6.7 6 6 3.3 6CABERNET 7.7 7.3 46.7 7.3 6.7 6.3 6.3 6 5 3.7 5.9EXCURSION 7.7 6.7 35 6.7 5.7 6 7.3 6 5.7 3.7 5.9
RAMBO 7.7 7.7 43.3 7.7 6.7 6 6.3 5.7 5.3 3.3 5.9BARONETTE 8.3 7.3 21.7 7.3 6 6 6.7 5.7 6 3 5.8BARRISTER 7.7 6.7 50 6.7 5.7 6 7 6 5 4 5.8
DLF 7 6.3 40 6.3 6.3 5.3 6.7 6.3 5.3 4.3 5.8IMPACT 8.3 7 43.3 7 6 5.3 7.7 6 4.7 3.7 5.8
TOTAL ECLIPSE 7.3 7 16.7 7 5.3 6.3 7 6 5.3 3.3 5.8A96-739 7.3 7.7 10 7.7 6.3 6.7 6 5 5.7 2.3 5.7AWARD 7.7 6.7 33.3 6.7 5.3 5.7 7.3 5.7 5 4 5.7
JEFFERSON 7.3 7.3 28.3 7.3 6.7 5.7 6.7 5.3 5.3 3 5.7ARCADIA 7.3 6.7 18.3 6.7 5.3 5.3 7.3 6 5.7 3 5.6
Ntep.org
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Seeding Rate • Temptation is to apply
much more than necessary – Wastes money – Excess competition delays
establishment • Calibrate equipment and
carefully apply correct amount of seed
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Seeding Rate
Cool Season Species
Seeding Rate lbs / 1000 ft2
Warm Season Species
Optimum Soil pH
Creeping Bentgrass Agrostis palustris
0.5 – 1.0 Buffalograss
Buchloe dactyloides
6.5 - 7.5 Tall Fescue Festuca arundinacea
7.0 – 9.0
Bermudagrass Cynodon dactylon
6.0 - 7.0
Fine Fescue Festuca rubra, F. longifolia
3.5 – 4.5
Zoysiagrass Zoysia spp.
6.0 - 7.0
Perennial Ryegrass Lolium perenne
7.0 – 9.0
Bahiagrass Paspalum notatum
6.5 - 7.5
Kentucky Bluegrass Poa pratensis
1.0 – 1.5 St. Augustinegrass Stenotaphrum secondatum
6.5 - 7.5
Centipedegrass Eremochloa ophiuroides
4.5 - 5.5
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Why the Difference?
• Different species have different size seeds
• Goal is to establish 1000 to 2000 seedlings ft2
Tall Fescue
Creeping
Bentgrass
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Seeding • Spread starter fertilizer
– Such as 18-46-0 – 1 to 1.5 lbs Nitrogen per 1000 ft2
• Apply lime as indicated by soil test
• Apply seed at ½ recommended rate in 2 directions
• Rake in seed / cover to ¼” depth
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No Starter
Fertilizer
Starter
Fertilizer
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Seed Germination Period
Cool Season Species
Germination Period (Days)
Warm Season Species
Optimum Soil pH
Creeping Bentgrass Agrostis palustris
7 - 14 Buffalograss
Buchloe dactyloides
6.5 - 7.5 Tall Fescue Festuca arundinacea
5 - 12
Bermudagrass Cynodon dactylon
6.0 - 7.0
Fine Fescue Festuca rubra, F. longifolia
5 - 12
Zoysiagrass Zoysia spp.
6.0 - 7.0
Perennial Ryegrass Lolium perenne
3 - 10
Bahiagrass Paspalum notatum
6.5 - 7.5
Kentucky Bluegrass Poa pratensis
6 - 28 St. Augustinegrass Stenotaphrum secondatum
6.5 - 7.5
Centipedegrass Eremochloa ophiuroides
4.5 - 5.5
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Start Mowing
• When new grass is 3” tall cut with rotary.
• Cut often (2 x week)
• Return clippings
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Management Practices
•Mowing
•Nutrition
•Irrigation
•Pest Control
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MOWING
April to November
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Lawn Height = 3 inches
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1/3 RULE
No more than 1/3 of the leaf
tissue to be removed at
any one time
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Grass Clipping = 1/3 Turf’s Annual Nitrogen Needs
Mulching Mower Compost
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Lawn Nutrition
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Natural Organic Fertilizers
Corn gluten meal Nature’s Helper Ecosential
• Nitrogen is derived from plant, animal or human bi-products
• Contains 2 to 10% nitrogen
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Timing of Natural Organic Fertilizer Applications on Ohio Lawns
Date N Rate (lbs N/1,000 sq.ft.)
Notes
Early April 0 – 1.0 Apply corn gluten meal for crabgrass control (10% N)
September 1.0 At the same time as seeding operation. Granular product or compost topdressing.
October 0.5 – 1.0 If seeded areas need it
November 1.0 Late fall application
Total N 2.5 – 3.5* * Heavier rates needed if lawn receives a lot of traffic & wear
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Phosphorus in Water
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Irrigation
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Irrigation Basics:
•Time of day
•Frequency
•Amount
•Application method
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Lawn Problems • Insects • Diseases • Weeds
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Weeds
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BEAUTY IS IN THE EYE OF THE BEHOLDER? …
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VOIDOLOGY
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As indicators
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Weed Classes • Grassy Weeds
– Annual (summer & winter)
– Perennial
• Broadleaf Weeds – Annual (summer &
winter) – Perennial
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Crabgrass
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Weed Control Options • Mechanical if possible • Prevention if possible “voidology” • Seed & fertilize often • Corn Gluten Meal (not if seeding) • Natural herbicides
– Fiesta (Fe based) – Adios (Salt solution) – Herbicidal soaps, oils & vinegars – NON
SELECTIVE
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Corn Gluten Meal
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Ref: Best
Management Practices for
Pesticide-Free Cool-Season
Athletic Fields. (2014) Uconn
Turfgrass
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Ref: EPA
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Insects: Namely White Grubs
* Often misdiagnosed * need to know the life cycle * thatch inhabitants * selection of proper turfgrasses ex. endophyte containing cultivars * thatch-inhabitors (surface feeders) * thinned turf susceptible to weed invasion
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Where do grubs feed?
Answer: Soil-Thatch Interface
© HDN
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Pesticide Toxicity
Substance Acute Oral LD50 (rat) in mg/kg Honey Bee Venom 2.8 Nicotine 10 Gasoline 50 Diazinon 100 Caffeine 200 2,4-D 666 Pendimethalin 1050 Aspirin 1200 Bleach 2000 Trimec Classic 2240 Table Salt 3320 Glyphosate 5180 Acelepryn 5,620
More Toxic
Less Toxic
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Damage from skunks & racoons
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Organic Options • Beneficial nematodes • Bt Grub Gone • Pheromones • Soaps • Milky Spore X
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Beneficial Nematodes • Tiny, microscopic roundworms kill grubs and
other insect pests • Apply when pest is caterpillar or larvae • Apply at soil temps >60oF • Irrigate after application • Apply in evening • Follow-up application generally needed
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Ref: UC Davis IPM
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Alternative Option?
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Host
Environment
Pathogen
Lawn Diseases – The Disease Triangle Concept
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New labels!
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RED THREAD RUST
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Take Home Message: • Maintain healthy soil & turf • Don’t disturb the soil in spring • Use low risk products
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References • Natural Organic Lawn Care for Ohio, Ohio
State University Extension Fact Sheet HYG-4031-04
• Best Management Practices for Pesticide
Free, Cool Season Athletic Fields, University of Connecticut
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Buckeyeturf.osu.edu
@Grassybrit Buckeye Turf