Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent,...
-
Upload
marc-matthew -
Category
Documents
-
view
214 -
download
0
Transcript of Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent,...
![Page 1: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/1.jpg)
Cool Season Lawns
Kansas State University
By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham
![Page 2: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/2.jpg)
Turfgrasses Commonly Grown in KS
▪Cool-Season
▸Turf Type Tall Fescue - Home lawns▸Kentucky Bluegrass▸Perennial Ryegrass - golf fairways▸Creeping Bentgrass - golf greens
▸Warm-Season - xeriscape
▸Zoysiagrass▸Bermudagrass▸Buffalograss
![Page 3: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/3.jpg)
▪Difficult to grow either warm- or cool-season grasses well
Kansas in Transition Zone
![Page 4: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/4.jpg)
Cool-Season Grasses
▪Grow best during spring and fall, summer difficult
![Page 5: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/5.jpg)
Tall Fescue
▪Has mini-rhizomes but basically bunch grass
![Page 6: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/6.jpg)
Tall Fescue
![Page 7: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/7.jpg)
Tall Fescue
▪Best adapted cool-season grass in Kansas
▪Used on home lawns, parks and athletic fields
▪Propagated by seed and sometimes by sod▸Sod doesn’t hold together well and so either mix in
bluegrass or use plastic mesh at planting▸Seed germinates quickly; everything perfect, 4 days
▪Coarse bladed grass but newer cultivars better than old ones
▪Avoid K-31; coarser, less dense, lighter color and seed tends to be contaminated with orchard grass
![Page 8: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/8.jpg)
Tall Fescue
Best Choice for the Shade
![Page 9: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/9.jpg)
Tall Fescue
Major Problem: Brown Patch
![Page 10: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/10.jpg)
What About Fine-Leaf Fescues?
▪There are tall fescues with finer leaves than K-31
▪There are true fine-leaved fescues▸Chewings fescue▸Hard Fescue▸Creeping Red Fescue▸Sheeps Fescue
![Page 11: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/11.jpg)
True Fine-Leaf Fescues
▪Have excellent shade tolerance; better than any of our commonly grown turfgrasses.
▪Have poor heat tolerance. Do not come through our summers well.
![Page 12: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/12.jpg)
Kentucky Bluegrass
![Page 13: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/13.jpg)
Kentucky Bluegrass
▪Spreads by rhizomes
![Page 14: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/14.jpg)
Kentucky Bluegrass
▪Fine-bladed grass that makes attractive lawn
▪Used on athletic fields, parks, and home lawns
▪Propagated by seed or sod
▪Poor heat tolerance▸Has trouble coming through our summers without
damage▸Better adapted further north
![Page 15: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/15.jpg)
Kentucky Bluegrass
Numerous Problems: Summer Patch Can Be Severe
![Page 16: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/16.jpg)
Cultural Practices
▪Mowing
▪Fertilization
▪Watering
▪Aerating
![Page 17: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/17.jpg)
Mowing: Basic Information
▪Don’t remove more than 1/3 of blade at one time
![Page 18: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/18.jpg)
Mowing: Basic Information
▪Don’t remove more than 1/3 of blade at one time
▪Clippings don’t contribute much to thatch (zoysia may be exception)
▪If remove clippings, must add 1/4 more nitrogen to get same response
▪Higher mowing height = deeper roots and less weeds for upright growing types
![Page 19: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/19.jpg)
When to Fertilize Cool-Season Grasses
▪September
▸Most important fertilization of year
▸Use 1 pound nitrogen per 1000 square feet
▸Quick-release OK
▪November
▸Second most important fertilization
▸Use 1 pound nitrogen per 1000 square feet
▸Quick-release OK
▪April or May
▸Optional; use 1 pound of nitrogen per 1000 square feet
▸Use fertilizer with at least 1/4 nitrogen as slow-release
![Page 20: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/20.jpg)
Fertilization: Fertilizer Analysis
▪Sequence of three numbers that reflect the percentage of nitrogen, phosphorus and potassium respectively.
![Page 21: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/21.jpg)
Fertilizer: Macro Nutrients
▪Nitrogen - Used for above-ground growth and good green color
▪Phosphorus - Used for root growth and formation of seeds and fruit
▪Potassium - Used for basic plant growth and helps plants withstand stress
![Page 22: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/22.jpg)
Lawn Fertilizers Fertilizer
▪21-0-0
▪Nitrogen usually needed
▪Phosphorus (middle number) usually already high in our soils and may run off and cause algae bloom in lakes
▪Potassium usually adequate in our soils
Most are high Nitrogen, low and phosphorus and potassium
![Page 23: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/23.jpg)
Drop Spreader
▪Relatively easy to calibrate
▪Takes more time to apply fertilizer
▪Skips extremely obvious and so need to go over area 2 times at right angles
![Page 24: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/24.jpg)
Whirlybird Spreader
▪Difficult to calibrate
▪Can apply fertilizer relatively quickly
▪Easier to avoid skips
▪With correct method, only need to go over area once
![Page 25: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/25.jpg)
Watering▪Look for darker “hot
spots”. Often have purplish tinge.
▪Best to allow turf to undergo some stress early in season. Makes turf more drought resistant.
▪Attempt to apply 3/4 to 1 inch of water each time you irrigate.
![Page 26: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/26.jpg)
Proper Watering
![Page 27: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/27.jpg)
How to Tell if You Have Enough Water
▪Use catch cans
▪Use screw driver; moisture down 6 to 8 inches
![Page 28: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/28.jpg)
Aeration Controls Thatch
▪Up to ½ inch thatch beneficial
▸Cushions plant▸Acts as mulch
▪Over ½ inch and roots tend to stay in thatch
![Page 29: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/29.jpg)
Benefits of Aerating
▪Thatch control
▪Better root aeration
▪Quicker water infiltration
▪Relieves compaction
▪Deeper fertilizer placement
![Page 30: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/30.jpg)
Aerators
▪Drum type normally used on home lawns
▪Go over lawn two times
![Page 31: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/31.jpg)
Seeding
▪Normally done in early fall for cool-season grasses▸Soil is warm so faster germination and establishment▸Less weed problems
▸5-8 lb/1000 sq.ft. For tall fescue
![Page 32: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/32.jpg)
Establishment
▪Seeding▸Commonly used for tall fescue and Kentucky bluegrass▸Sept is best month (may seed as late as Oct 15)▸March is second best month
▪Sodding▸Commonly used for Kentucky bluegrass▸Tall fescue is sodded more now▸Best success is Sept - late October, March through late
May
![Page 33: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/33.jpg)
Overseed if > 50% Good Grass
▪July/August
▸Spray perennials with glyphosate
▪September
▸Fertilize then plant early in September (6-8 lb/1000sqft)
▸Core aerate if compacted, then seed and vertislice
▸Vertiseed if not compacted
▸Keep soil moist
▪October
▸Fertilize one month after planting
▪November
▸Fertilize again one month later
![Page 34: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/34.jpg)
Overseeding
▪Normally done in early fall for cool-season grasses
▪Must have good seed-soil contact
▪Methods
▸Slit seeder
![Page 35: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/35.jpg)
Overseeding/Vertislicing
▪Either put on seed prior to slicing or
▪ with vertiseeder
![Page 36: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/36.jpg)
Seeding/Core Aeration
▪Lightly seed each time you aerate
▪Method to thicken up slightly thin lawns
![Page 37: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/37.jpg)
Rototil & seed if < 50% Good Grass▪July/August
▸Spray perennials with glyphosate
▸Grade soil, apply nutrients, rototill
▪September
▸Fertilize then plant early in September (6-8 lb/1000sqft)
▸Rake in grass seed
▸Keep soil moist
▪October
▸Fertilize one month after planting
▪November
▸Fertilize again one month later
![Page 38: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/38.jpg)
Sodding of Cool-Season Grasses
▪Best done in fall (just like for seeding) but can be done any time ground not frozen
▪Problems with laying sod in summer
▸Dessication (drying out)
▸Disease
▸Heat stress
▸Water bill
▪Prepare soil just like you would for seeding on bare ground
▪Roots will peg down in 7 to 10 days under good conditions
![Page 39: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/39.jpg)
Weed Prevention
▪Maintain a thick turf
▸Weed seeds are often small and many need sunlight and consistent moisture to germinate
▸Even if weed seeds germinate in a thick turf, competition may slow weed growth
![Page 40: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/40.jpg)
Weed Prevention
▪Maintain a thick turf
▪Mow as high as practical
![Page 41: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/41.jpg)
Preemergence Herbicides
▪Applied before weeds germinate
▪Must be watered in
![Page 42: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/42.jpg)
Preemergence Herbicides
▪Must be watered in
▪Only kills weed seeds as they germinate
▪Need some time after application for activation
▪Primarily used for annual grasses such as crabgrass
![Page 43: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/43.jpg)
Common Preemergence Herbicides
▪Barricade
▪Dimension
▪Pendimethalin
▪Team
![Page 44: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/44.jpg)
Control of Annual Grassy Weeds
Recommendations
▪Annual grassy weeds normally controlled with preemergent herbicides
▪Timing▸Traditionally, crabgrass preventers have been applied
by April 15th in central Kansas▸Apply when redbud trees are approaching full bloom
![Page 45: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/45.jpg)
Control of Annual Grassy Weeds
▪Crabgrass
![Page 46: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/46.jpg)
Control of Annual Grassy Weeds
▪Crabgrass
▪Goosegrass
▪Foxtail
![Page 47: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/47.jpg)
Control of Annual Grassy Weeds
Miscellaneous Notes
▪Crabgrass seeds begin germinating when soil temperatures rise above 60Q F, and when air temperatures rise above 65Q for five consecutive days.
▪Barricade lasts a long time but takes longer to activate
▸Apply two weeks earlier than other herbicides▸Can be applied in fall for season long control next year
▪If late with preventer, use Dimension
![Page 48: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/48.jpg)
Postemergence Herbicides
▪Applied after weeds are up
▪Rain can reduce or eliminate effectiveness
![Page 49: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/49.jpg)
Common Postemergence Herbicides
▪2,4-D
▪Weed-B-Gon
▪Trimec products
▪Turflon products
▪Confront
![Page 50: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/50.jpg)
Control of Broadleaf WeedsWinter Annuals
▪Henbit
![Page 51: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/51.jpg)
Control of Broadleaf WeedsWinter Annuals
▪Henbit
▪Chickweed
![Page 52: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/52.jpg)
Control of Broadleaf Weeds
Winter Annuals and Perennials
▪Henbit
▪Chickweed
▪Dandelion
![Page 53: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/53.jpg)
Control of Broadleaf Weeds
What to Use▪2,4-D: dandelion and winter annuals in the fall
▪Combination products: dandelion and winter annuals in the early spring
▸Trimec (2,4-D + MCPP + Dicamba)
▸Weed-B-Gon (2,4-D + MCPP)
▪Confront (commercial product): excellent on clover, safe on buffalograss
▪Turflon products: good on clover
![Page 54: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/54.jpg)
Control of NutsedgeBackground Info
▪Not a grass
▪Has triangular base
▪Likes moist sites
▪Can reproduce by seed or nutlets
![Page 55: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/55.jpg)
Control of NutsedgeHerbicides
▪MSMA, Basagran and Manage are used
▪Manage works well
![Page 56: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/56.jpg)
Control of Bermuda in Cool-Season Turf
Bermuda greens up late and goes dormant early
![Page 57: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/57.jpg)
Control of Bermuda in Cool-Season Turf
Steps to Control
▪Mid-July: Fertilize and water bermuda
▪First of August: Spray with Glyphosate
▪Third weed of August: Spray again with Glyphosate if any green
▪Early September: Seed
![Page 58: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/58.jpg)
Insect Problems
Most Common Problem is “Grubs”
▪May Beetle (June Bug)
▪Southern Masked Chafer
▪Billbugs
▪Black Turfgrass Ataenius
![Page 59: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/59.jpg)
Grub Insects, Adults
May Beetle Southern Masked Chafer
Black Turfgrass Ataenius Billbug
![Page 60: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/60.jpg)
White GrubsMottled appearance to turf
![Page 61: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/61.jpg)
White Grubs
![Page 62: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/62.jpg)
White Grubs
Identification
May BeetleSouthern Masked Chafer
![Page 63: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/63.jpg)
May Beetle
▪3-year Life Cycle
▪2nd Year Most Damaging
![Page 64: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/64.jpg)
Southern Masked Chafer
▪Annual grub
▪Most common grub that causes damage
▪Adults don’t feed that we know of
![Page 65: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/65.jpg)
White Grub Control
Number needed to cause visible damage
▪Southern Masked Chafer: 8-9 per square foot
▪May Beetle: 3-4 per square foot
![Page 66: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/66.jpg)
White Grub ControlMerit Insecticide
▪Labeled for white grubs and billbugs
▪Considered a 3 month product
▪If after annual grubs, apply early to mid- July
▪If also seeking to control May Beetle grubs or billbugs, apply no earlier than mid-May
▪Causes a disruption of a grub's nervous system resulting in its death
▪Not for rescue treatments
![Page 67: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/67.jpg)
White Grub ControlMach 2 Insecticide
▪Labeled for cutworms, sod webworms, billbugs and white grubs
▪Considered a 6 week product
▪Apply early to mid- July for white grub control
▪Accelerates a grub's development by causing it to molt prematurely
▪Feeding stops within a couple of hours of ingestion
▪Not for rescue treatments
![Page 68: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/68.jpg)
White Grub Control
Rescue Treatments
▪Apply when see damage
▪Use convential insecticide
![Page 69: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/69.jpg)
How to Tell if Grub Affected by Insecticide
Grub on Way OutHealthy Grub
![Page 70: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/70.jpg)
Diseases
▪Kentucky Bluegrass - Summer Patch, Dollar Spot
▪Tall Fescue - Brown Patch
▪Bermudagrass - Spring Dead Spot
▪Zoysiagrass - Large Patch
![Page 71: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/71.jpg)
Kentucky Bluegrass - Summer Patch
Symptoms
▪Frog-eye Pattern
![Page 72: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/72.jpg)
Kentucky Bluegrass - Summer Patch
Control
▪By the time you see symptoms, it is too late
▪Heritage and Bayleton provided good control when applied on May 1, May 27 and June 23.
![Page 73: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/73.jpg)
Kentucky Bluegrass - Dollar SpotSymptoms
▪Small brown spots
▪Individual leaf blades have hourglass pattern
![Page 74: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/74.jpg)
Kentucky Bluegrass - Dollar Spot
Conditions Favoring
▪Warm, humid conditions
▪Made worse by low nitrogen fertility
![Page 75: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/75.jpg)
Kentucky Bluegrass - Dollar Spot
Control
▪On home lawns, usually not severe enough to warrant control.
▪May wish to apply light fertilization, if appropriate.
▪Many fungicides can be used if desired including Banner or Daconil.
![Page 76: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/76.jpg)
Tall Fescue - Brown Patch
▪Smoke ring sometimes present in early morning
Symptoms
![Page 77: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/77.jpg)
Symptoms
Tall Fescue - Brown Patch
▪Circular patches up to several feet in diameter
![Page 78: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/78.jpg)
Tall Fescue - Brown Patch
Conditions Favoring
▪Hot days and warm nights
▪High nitrogen fertilization
▪Wet leaf surfaces
![Page 79: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/79.jpg)
Tall Fescue - Brown PatchControl
▪Often turf will recover without spraying
▪Preventive sprays are more effective than curative
▪First preventive spray should go down about July 1
▪Heritage, Bayleton, Banner, ProStar, and Daconil work well. Daconil best for homeowner.
▪Heritage and ProStar have been the most effective over the long term (5 weeks control with one app)
![Page 80: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/80.jpg)
Brown Area in Otherwise Green Lawn
If No Signs of Diseases or Insects, Probably Burn
▪Female dog
▪Gas spill
▪Car exhaust
▪Dumped salt water from ice cream maker
▪Shallow soil due to underlying rock
![Page 81: Cool Season Lawns Kansas State University By Bob Neier, Sedgwick County Extension Agent, Horticulture Adapted from materials by Ward Upham.](https://reader035.fdocuments.net/reader035/viewer/2022081518/5519414b5503468d738b45ba/html5/thumbnails/81.jpg)
The End