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Published byDina Atkins Modified over 9 years ago
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Establishing Lawns Horticulture Mr. Fitzgerald
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Turf Facts §Approx. 50 million acres of managed turf in US §As of 2004, the annual value of the U.S. turfgrass industry was $35 billion. §Nationally, homeowners spend $6.4 billion per year on lawn care.
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Get to know your grass §Type: l Cool Season Fescue, Kentucky Bluegrass, Ryegrass, Bentgrass l Warm Season Bermuda, Centipede, Zoysia, St. Augustine
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§Name of seed producer §Seed Lot # §Seed Variety §% Purity §% Germination §% Weed or Crop Seed §% Non-Seed Material §Date when seed was last tested for Germination Seed Label Information What are you buying????
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How much seed do you need? §Based on % pure live seed & # of plants required for area §GOAL §Establish 1000 plants per square foot for newly seeded lawn
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Pure Seed or Mixture §Mixture l meets wide environmental & use requirements l select mixture based on desired characteristics l turfgrass vary in resistance to disease and insects §What can be mixed? l Any turf that spreads by rhizomes or tillers l (Fescue, Bluegrass, Ryegrass) l Do not use stolon grasses, tend to segregate Bermuda, Bentgrass, Zoysia, Centipede, St Augustine)
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Methods for Establishment §Seeding §Plugging §Sprigging §Sodding
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Soil Test
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Soil pH §pH governs the availability of nutrients & activity level of microorganisms
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pH §Most lawns grow best in a soil pH 5.5 - 6.5 §Low pH < than 5.0 (acidic soil) l Dolomite or Limestone l Avoid over liming - weak growth will result §High pH > 7.0 (alkaline soil) l Ammonium sulfate, Aluminum sulfate, Sulfuric acid
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Establishment Steps §Rake & Remove Debris §Weed Seed Germination §Add Nutrients & Lime l Soil Test Recommendation l Phosphorous (2-3 lb per 1000 sqft) §Application of Seed, Sprigs, Sod, Plugs §Rake & Roll ensure good soil contact
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Water §Seedbed must stay moist for seeds to germinate 1st 3 weeks Seed & Sprigs Keep moist by frequent, light watering until new root system develops
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Sodding §Any turfgrass that spreads by rhizomes or stolons §Best Time: when turfgrass is actively growing §Advantages: l Instant Lawn l Less Weed Competition l Decrease Erosion §Disadvantages l High cost
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Installing Sod Cost More Instant Lawn
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Sodding §Cost: $.12 -.35 / sqft §12” wide x 2’ long to 18” wide x 6’ long §Pallet = 450 sq ft §Thickness 1” - 1 1/2” l 1/2” should be soil & roots
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Sprigs & Plugs §Most common: Bermuda & Bentgrass §Sold by Bushel §1 Bushel = 1 sqft of sod §Home Lawn: Sprig 4-5 Bushels per 1000 Sq ft §Trays of 1-2 Dozen (4”pots)
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Sprigs & Plugs §Time of Year l Early Spring to Late Summer §Spacing 10-12” apart, checkerboard §Planting l set root systems completely under soil surface §Soil Contact l Roll area after planting
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Water Sod & Plugs –Heavily soaked so that soil underneath is completely wet
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Establishment §Mowing l as soon as grass gets high enough to cut at its optimum height §Weed Control l 1st year chemical weed control is discouraged
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Converting Old Lawns §Grass selection: §Bermuda, Zoysia, Centipede conversion §2 year for conversion §Steps: l 1. Cut Lawn Closely l 2. Dethatch / Aerification l 3. Correct pH / Nutrient Level l 4. Sprig / Plug / Seed l 5. Roll & Water Thoroughly
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Maintenance of Established Lawns §Fertility l Major Nutrient –Nitrogen –Phosphorous –Potassium l Minor Nutrient –Sulfur –Magnesium –Iron
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Maintenance of Established Lawns §Fertilizer Application l Type of grass l Soil Analysis l Fertilizer Burn Salt Toxicity Check spreader calibration
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Spreader Selection & Application §Low quality spreader can leave streak or patches in the lawn §Causing unsatisfactory control of weeds, insects, as well as poor fertilizer performance
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Drop vs Rotary Spreader §Drop Spreader l meter out fertilizer and drop it directly on lawn l Small lawn l Doing job as precisely as possible is important l don’t mind taking a bit longer
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Drop vs Rotary Spreader §Rotary spreader meter out the fertilizer and throw granules in a swath §very large lawn §want to get the job done w/speed §don not have flowerbeds nearby
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Best Results: Apply header strip along edge
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When to Fertilize §Cool Season Grass l Fescue l Sept, Nov, Feb, April §Warm Season Grass l Bermuda: April, May, June l Centipede: June l Zoysia: April, June l St. Augustine: May, June, July, Aug
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FESCUE ALERT! §Fertilize fescue with caution. §Too much will make it disease prone and drought sensitive. § If you haven't fertilized in six weeks, apply now at half the rate recommended on the bag.
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Maintenance of Established Lawns §Lime §Amount Based on Soil Test §Slow Release Lime §Apply : Fall
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Irrigation General Rule 1” water per week
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How to measure ?
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Water when dew is on the ground
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Lack of Water Stress Signs §Grass turns a silvery blue in stress area §Footprints in lawn, does not spring back
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Mowing §Avoid Scalping §Never cut more than 1/3 of leaf blade in one single mowing
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Mowing too low §Decrease grass ability to develop food reserves for stress & dormant periods §Expose growing point to heat/cold §Larger % leaf cut the longer period root will not grow = shallow root system
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Mowing recommended heights remove no more than 1/3 total leaf area
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Blade Sharpness
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Mowing Equipment §Rotary Mower vs Reel Mower §Chemical Mowing l Growth Regulators reducing leaf growth
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Reel Mower
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Aerification §Clay Soil §Benefits l Decrease compaction l Improves water movement l Increases irrigation efficiency l Increase oxygen exchange l Increase nutrient availability
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Aerification §Equipment l Solid Tine l Hollow Tine (Core Aerifiers) l Slicing / Vibrating Aerifers l High Pressurized Water & Air (depths from 1/4” - 16”)
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Aerification
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Thatch Management §Organic material produced faster than it can be decomposed §Problems l Decrease water movement l Decrease soil aeration l Decrease root growth l Increase insect/disease problems l Creates barrier for fertilizer movement
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Thatch Management §Look For l Spongy Turf l Cut section of turf & measure l No more than 1/2” thatch §Remove Thatch l Vertical mowers l Power rakes l Dethatching mowers
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Problem Solving §ID Problem §Select Treatment Specific to Problem
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Weeds Broadleaf & Grass-Type
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Weed Control §Pre-emergence l Apply: Feb -March & Sept - Oct l Balan, Surflan, Dacthal, Ronstar §Post-emergence l Apply: Summer during Early Weed Growth l MSMA, Trimec, Acclain, Weedar, Banvel
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Disease Control §Brown Patch Dollar Spot l Banner, Tersan, Maneb, Topsin
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Disease §Pythium Blight / Root Rot /Fairy Ring §Alliette, Captan, Sudbue, Banol
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Moss Problem §Shade §Compact Soil §Poor Drainage §Low Soil Fertility §Poor Air Circulation §High or Low pH Raking and Copper Sulfate Change Conditions
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Insects §Feed on Roots §White Grubs / Mole Crickets §Orthene, Sevin, Diazion §Milky Spore “Doom” §BT Powder l Jap. Beetle Grubs
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Insects §Feed on leaf §Army Worms/Chinch Bugs §Dursban, Diazion, Sevin §Damage results when chewed foliage dehydrates and turns brown
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