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Category: Cultural Practices

Spring Zoysia News

By: Dr. Jack Fry

Meyer Winter Injury

Significant winter injury has occurred on Meyer zoysia throughout the Kansas City area on golf courses – some have suffered more than others. The injury is most pronounced in the following areas:

  • Turf exposed to tree shade (even moderate levels from trees casting shadows from the rough)
  • High traffic areas
  • Areas that don’t drain well

We often try to compare differences among courses and determine why one course had better winter zoysia survival than other.  Ultimately, it seems that cultural practices have less of an impact on the freezing injury observed than the environment in which the zoysia is growing.   The above stresses can be matched directly with plant metabolism:

1) Shade – more light allows higher levels of photosynthesis and carbohydrate production, which is critical to winter survival;

2) Traffic – less compaction allows more oxygen in the soil and more root respiration and growth – high traffic reduces soil oxygen;

3) Drainage – areas that collect water also have lower soil oxygen levels and poor root growth.  In addition, plants growing in saturated areas are subject to crown hydration freezing injury – crowns fully hydrated don’t tolerate low temperatures well. Methods for correcting the above are straight forward, but implementing the changes can be difficult – politically and financially:  removing or thinning trees, redirecting traffic, correcting drainage issues.  If nothing else, the zoysia injury is indicating to turf managers where the problem areas are on the golf course.

 

Pictured above: Zoysia grown in high traffic areas in more prone to winter injury, such as this area surrounding a putting green where golfers enter and exit.

 

Innovation Zoysia is on the Market

Innovation zoysia, the new cultivar developed cooperatively by K-State and Texas A&M is on the market. Ted Wilbur, owner of Sod Shop in Wichita, recently cut and sold the first Innovation sod in the U.S..  He currently has about 25 acres in production – some is available now, some will be available later this summer.

Compared to Meyer zoysia, Innovation has:

  • Darker green color
  • Higher density
  • Finer texture
  • Fewer and smaller seedheads
  • Better billbug resistance
  • Freezing tolerance that is equivalent

Find more about Innovation here: https://sodsolutions.com/industry/innovation-zoysia/

Interested in ‘Innovation’?  Reach out to Sod Shop in Wichita: (316) 838-5888

 

Pictured above on left: Ted Wilbur (left) and Travis Achilles (right) with Sod Shops in Wichita, KS have cooperated with K-State in the production of  ‘Innovation’ zoysiagrass. Pictured above on right: The first ‘Innovation’ sod was cut and delivered to Hesston, KS for use at a local water park.

May Weekend Warrior Reminders

(By Jared Hoyle, KSU Turfgrass Research and Extension)

This time of year we can be caught of guard when it comes to maintaining our lawn.  Today we have some reminders about maintaining cool-season turfgrass for all you weekend warriors out there!

  • Reminder – Avoid frequent watering to reduce weeds germination and disease.
  • May is time for fertilizing cool-season turfgrass that is going to be irrigated. (See information below from Ward Upham.)
  • Mowing Tip – Only remove 1/3 of the leaf blade at a time and make sure you mow your lawn at the recommended mowing height. For more information on mowing your lawn – https://www.bookstore.ksre.ksu.edu/pubs/MF1155.pdf 
  • Mowing Tip #2 – Retuning your clippings to the lawn can return up to 25% of fertilizer nutrients that would be lost if clippings were to be removed. – https://www.bookstore.ksre.ksu.edu/pubs/MF2110.pdf

Fertilize Irrigated Cool-season Lawns in May By Ward Upham

May is an excellent time to fertilize cool-season lawns such as
tall fescue and Kentucky bluegrass if they will be irrigated throughout
the summer. Non-irrigated lawns often go through a period of summer
dormancy because of drought and do not need this fertilization.
May is a good time to fertilize because the springtime flush of
growth characteristic of these grasses has tapered off, so the
fertilizer you apply will be less likely to cause excessive shoot growth
than if you fertilized at a full rate in April. Slow-release nitrogen
sources are ideal. These nitrogen sources promote controlled growth,
which is desirable as the stressful summer weather approaches.
Relatively few fertilizers available to the homeowner supply ALL of the
nitrogen in the slowly available form. But one such product that is
widely available is Milorganite. Other such products available in the
retail market include cottonseed meal, alfalfa-based fertilizers, and
any other products derived from plants or animals. (Bloodmeal is an
exception, and contrary to popular belief, the nitrogen it supplies is
quickly available.) These products are all examples of natural organic
fertilizers. They typically contain less than 10 percent nitrogen by
weight, so compared to most synthetic fertilizers, more product must be
applied to get the same amount of nitrogen. Translation: they are more
expensive! Apply enough to give the lawn one pound of nitrogen per 1,000
square feet. For example, if the fertilizer is 6 percent nitrogen by
weight, you will need to apply almost 17 pounds of fertilizer product
per 1,000 square feet. Summer lawn fertilizers that contain at least a
portion of the nitrogen as slow-release are fine to use as well. Be sure
to follow label directions. If cost is prohibitive, you can use the less
expensive quick-release (i.e., soluble) sources, but split the
application into two doses as follows: apply enough to give the lawn 0.5
lb nitrogen per 1,000 square feet in May and again in early June.

***** Reminder –  These are recommendations for cool-season turfgrass species!*****

For more information on tall fescue lawns – https://www.bookstore.ksre.ksu.edu/Item.aspx?catId=545&pubId=1460

For more information on Kentucky bluegrass lawns – https://www.bookstore.ksre.ksu.edu/Item.aspx?catId=545&pubId=816 

Weekend Warrior Turfgrass Lawn Care

(By Jared Hoyle, KSU Turfgrass Research and Extension)

Finally I think we have turned the corner into Spring.  With that, I see more and more of my neighbors, and myself, working in the yard.  I get excited when the turf starts to turn green.  But before I get too carried away I want to get out on the right foot and planning is everything.  To help help you plan out your lawncare program below are monthly calendars for tall fescue, Kentucky bluegrass, buffalograss, bermudagrass and zoysiagrass.

Bermudagrass and Zoysiagrass Lawns

https://blogs.k-state.edu/turf/a-homeowner-step-by-step-guide-to-bermudagrass-and-zoysiagrass-lawns/

Buffalograss Lawns

https://blogs.k-state.edu/turf/a-homeowner-step-by-step-buffalograss-lawn-guide/

Tall Fescue and Kentucky Bluegrass Lawns

https://blogs.k-state.edu/turf/a-homeowner-step-by-step-tall-fescue-and-kentucky-bluegrass-lawn-guide/

Always remember to READ THE LABEL for the correct rate, turfgrass tolerance, and specific instructions before application!!!

***Mention of trade names or commercial products in this article is solely for identification purposes and does not imply recommendation or endorsement, nor is criticism implied of similar products not mentioned by Kansas State University.***

Don’t forget to follow me on twitter @KSUTurf.

Also, visit our facebook page www.facebook.com/KSUTurf

K-State Radio Network “Plantorama” – Home Lawn Winterkill

(By Jared Hoyle, KSU Turfgrass Research and Extension)

HOME LAWN WINTERKILL– It was a fairly harsh winter in this region.  And that has homeowners wondering if their lawn grasses were adversely affected by the extended cold and wet conditions. K-State turfgrass specialist Jared Hoyle says while the likelihood of outright turfgrass winterkill is relatively low, some limited damage may have occurred.

Click the link below for K-State Research and Extension Agriculture Today Radio Program “Plantorama” hosted by Eric Atkinson.

Check out the KSRE bookstore more more information on all things turf! – https://www.bookstore.ksre.ksu.edu/Category.aspx?id=528&catId=545

Always remember to READ THE LABEL for the correct rate, turfgrass tolerance, and specific instructions before application!!!

***Mention of trade names or commercial products in this article is solely for identification purposes and does not imply recommendation or endorsement, nor is criticism implied of similar products not mentioned by Kansas State University.***

Don’t forget to follow me on twitter @KSUTurf.

Also, visit our facebook page www.facebook.com/KSUTurf

Cool-season Turfgrass Lawn Care Reminders!

(By Jared Hoyle, KSU Turfgrass Research and Extension)

It is that time of year again to start working on your cool-season lawn.  To try and cover it all, I have listed a couple posts from the past that can help you get that lawn into shape.  I also have added a list of publications. Enjoy!

Time to fertilize cool-season turfgrass

http://blogs.k-state.edu/turf/time-to-fertilize-cool-season-turfgrass/ 

Monthly calendar for cool-season lawns for the rest of the year

http://blogs.k-state.edu/turf/monthly-calendar-for-cool-season-lawns-for-the-rest-of-2017/

Power raking or core aeration – That is the question!

http://blogs.k-state.edu/turf/power-raking-or-core-aeration-that-is-the-question/

The art of knowing your seed label

http://blogs.k-state.edu/turf/the-art-of-knowing-your-seed-label/

For seeding success, pay attention to other crop on the seed label

http://blogs.k-state.edu/turf/for-seeding-success-pay-attention-to-other-crop-on-the-seed-label/

Publications

Lawn Fertilizing Guide – https://www.bookstore.ksre.ksu.edu/Item.aspx?catId=545&pubId=10639

Recycling your grass clippings  – https://www.bookstore.ksre.ksu.edu/Item.aspx?catId=545&pubId=701

Mowing your lawn – https://www.bookstore.ksre.ksu.edu/Item.aspx?catId=545&pubId=615

Tall Fescue Lawns – https://www.bookstore.ksre.ksu.edu/Item.aspx?catId=545&pubId=1460

Watering New Lawns – https://www.bookstore.ksre.ksu.edu/Item.aspx?catId=545&pubId=1337

Planting a Home Lawn – https://www.bookstore.ksre.ksu.edu/Item.aspx?catId=545&pubId=595

Aerating Your Lawn – https://www.bookstore.ksre.ksu.edu/Item.aspx?catId=545&pubId=713

Kentucky Bluegrass Lawns – https://www.bookstore.ksre.ksu.edu/Item.aspx?catId=545&pubId=713

 

Check out the KSRE Bookstore for more publications – https://www.bookstore.ksre.ksu.edu/Category.aspx?id=528&catId=545

 

2018 K-State Turfgrass Research Reports Online!

 

(by Jared Hoyle, KSU Turfgrass Research and Extension )

Every year the Kansas Agriculture Experiment Station publishes research reports on projects that are being conducted around the state.  The 2018 Turfgrass Research Reports are now online!  These reports contain everything from turfgrass variety testing, weed control, disease and insect management and more.

Below are a list of the 2018 reports.  Click the title to read more.

Extent of Larval Populations of Turfgrass Insect Pests at Rocky Ford Turfgrass Research Center at Manhattan, KS
Raymond A. Cloyd

Herbicide and Application Timing Effects on Windmillgrass Control
Nicholas Mitchell and Jared Hoyle

Evaluating Small Unmanned Aerial Systems for Detecting Drought Stress on Turfgrass
Mu Hong, Dale Bremer, and Deon van der Merwe

Urban Lawn Microclimates Affect Reference Evapotranspiration
Kenton W. Peterson, Dale J. Bremer, and Jack D. Fry

Evaluating Zoysiagrass-Tall Fescue Mixtures in Kansas
Mingying Xiang, Jack D. Fry, and Megan M. Kennelly

Brown Patch Occurrence in a Zoysiagrass-Tall Fescue Polystand Compared to a Tall Fescue Monostand
Mingying Xiang, Jack D. Fry, and Megan M. Kennelly

Evaluating Large Patch-Tolerant and Cold Hardy Zoysiagrass Germplasm in the Transition Zone
Mingying Xiang, Jack D. Fry, and Megan M. Kennelly

2013 National Turfgrass Evaluation Program Bermudagrass Test: 2013–2017 Summary Report
Linda R. Parsons, Michael J. Shelton, Jason J. Griffin, and Jared A. Hoyle

2012 National Turfgrass Evaluation Program Tall Fescue Test: 2012–2017 Summary Report
Linda R. Parsons, Michael J. Shelton, Megan M. Kennelly, Jason J. Griffin, and Jared A. Hoyle

2013 National Turfgrass Evaluation Program Bermudagrass Test: 2017 Data
Linda R. Parsons, Michael J. Shelton, Jason J. Griffin, and Jared A. Hoyle

2012 National Turfgrass Evaluation Program Tall Fescue Test: 2017 Data
Linda R. Parsons, Michael J. Shelton, Megan M. Kennelly, Jason J. Griffin, and Jared A. Hoyle

 

Bentgrass Declining? It’s from Western Europe, You live in Kansas

(By Jared Hoyle, KSU Turfgrass Research and Extension)

The past couple weeks have been a struggle to grow bentgrass.  Some areas in Kansas are getting rain but others are not.  The rains have been localized and here at the Rocky Ford Turfgrass Research Center in Manhattan we keep missing the isolated showers.

I know some other golf course are in the same place as we are and it has been a struggle to keep bentgrass alive.  Well, I dug through the blog and found a post from Dr. Jack Fry about bentgrass management in the summer.  Dr. Fry leads of the article with..

“In the midst of a summer with 100+ F temperatures, it’s worthwhile to consider some of creeping bentgrass’s preferences and management strategies that might be helpful to reduce its stress, and yours.  See, the thing about creeping bentgrass on putting greens is….”

Click below to find out more about bentgrass management in the summer.

http://blogs.k-state.edu/turf/bentgrass-declining-its-from-western-europe-you-live-in-kansas-by-dr-fry/

Not Your Father’s Knotweed

(By Jared Hoyle, KSU Turfgrass Research and Extension)

For the past couple years I have posted on prostrate knotweed (Polygonum aviculare) control in turfgrass systems.  Guess what… it is that time of year again.  I have been seeing knotweed germinate all across campus and in areas where turf is thin.  Knotweed can grow in compacted soils where turf can’t survive. So after you get control of that knotweed make sure you aerify to relieve the compaction (Check out my recent post on aerification – http://blogs.k-state.edu/turf/new-aerating-your-lawn-ksre-publication/) and get some healthy turfgrass growing.

There are going to be some new products coming to the market soon that we have tested on prostrate knotweed that have shown excellent control.  So keep a lookout for new broadleaf herbicides (Hopefully they will be out either late this year or early next year).  When they hit the market you will hear all about it and next year when I post about knotweed control hopefully they will be released and I can add it to the list!

If you didn’t get your preemerge out in the fall for control and you have a history of knotweed it is time to go out and attack the knotweed and other broadleaf weeds you have lingering around.  These weeds are easier to control now when they are young compared to when they get mature.

Below is the Knotweed Control Turfgrass Selfie Series Video I did last year but here are the take home messages;

  • Early germinating summer annual
  • Likes compacted soils/flooded areas
  • 2,4-D = fair control
  • 2,4-D + triclopyr or dicamba = excellent control
  • metsulfuron can be used in warm-season turf
  • PRE applications must be done in the Fall

Always remember to READ THE LABEL for the correct rate, turfgrass tolerance, and specific instructions before application!!!

***Mention of trade names or commercial products in this article is solely for identification purposes and does not imply recommendation or endorsement, nor is criticism implied of similar products not mentioned by Kansas State University.***

Don’t forget to follow me on twitter @KSUTurf.

Also, visit our facebook page www.facebook.com/KSUTurf

 

A Homeowner Step-By-Step Buffalograss Lawn Guide

(By Jared Hoyle, KSU Turfgrass Research and Extension)

Buffalograss Lawn Calendar

For more information check out the Buffalograss Lawns Publication at the KSRE Bookstore – https://www.bookstore.ksre.ksu.edu/Item.aspx?catId=545&pubId=1447

Buffalograss has become more popular in recent years due to its reputation as a low-maintenance grass. Buffalograss does require less water and fertilizer than our other turfgrasses but often has problems competing with weeds in eastern Kansas. Remember, buffalograss is a low-maintenance lawn and not a “No”-maintenance lawn.

Buffalograss is an open growing grass that will not shade the soil as well as most of our other turfgrasses. Weeds are often the result. A regular mowing schedule can reduce broadleaf weed problems as most broadleaves cannot survive consistent mowing. Those that do either have a rosette growing pattern (dandelions, shepherds purse) or are “creepers” (henbit, chickweed, spurge). Annual grasses such as crabgrass or foxtail can also be a problem. A good weed preventer (prodiamine, pendimethalin or dithiopyr) may be needed prevent problems.

March

Spot treat broadleaf weeds if necessary. The most important treatment for broadleaf weeds should be in late October to early November well after the buffalograss is dormant. Treatments are much more effective then than in the spring as the weeds are smaller and the weeds are sending energy, as well as the herbicide, to the roots. Treatments in March are to take care of any “escapes” missed in the fall spraying. Spray early enough in March that the buffalograss is still dormant. Look at the base of the plants to make sure there is no green. Treat on a day that is 50 degrees F or warmer. Rain or irrigation within 24 hours of application will reduce effectiveness.  Use a combination product such as Trimec, Weed-B-Gon or Weed-Out. Weed Free Zone is also good and will give quicker results under cool conditions.

April

Apply crabgrass preventer between April 1 and April 15, or apply preventer when the eastern redbud is in full bloom. If using a product with prodiamine (Barricade), apply two weeks earlier.  Crabgrass preventers must be watered in before they will work. Avoid using broadleaf herbicides as the buffalograss is greening up as injury can result. The buffalograss will not be killed but growth will slow making the buffalograss less competitive with weeds.

June

Fertilize with 1 lb. of nitrogen per 1,000 square feet during June. More applications will give a deeper green color, but can encourage weeds. If it is felt that a second application is needed, apply in July.

If grubs have been a problem in the past, apply a product containing imidacloprid by mid July. Imidacloprid can be applied as early as mid May if there are problems with billbugs or May beetle grubs. These products kill the grubs before they cause damage. They are effective and safe but must be watered in before they become active. Again, I would only treat if grubs have been a problem in the past. Note that the whole area may not need to be treated. The beetles that lay the eggs for the grubs are attracted to lights and moist soil and those areas are most likely to be infested.

Late-July through August

If you see grub damage, apply a grub killer. If imidacloprid has been applied or if grubs have not been a problem in the past, this should not be necessary. Grub killers must be watered in immediately.

Late October to Early November

Spray for broadleaf weeds if they are a problem. Look carefully as our winter annuals such as chickweed and henbit are small and easily overlooked. Use a product that contains 2,4-D as it increases effectiveness on dandelions. Treat on a day that is at least 50 degrees F. Rain or irrigation within 24 hours reduces effectiveness. Use the rates listed on the label for all products mentioned.

For more information check out the Buffalograss Lawns Publication at the KSRE Bookstore – https://www.bookstore.ksre.ksu.edu/Item.aspx?catId=545&pubId=1447

Always remember to READ THE LABEL for the correct rate, turfgrass tolerance, and specific instructions before application!!!

***Mention of trade names or commercial products in this article is solely for identification purposes and does not imply recommendation or endorsement, nor is criticism implied of similar products not mentioned by Kansas State University.***

Don’t forget to follow me on twitter @KSUTurf.

Also, visit our facebook page www.facebook.com/KSUTurf

A Homeowner Step-by-Step Guide to Bermudagrass and Zoysiagrass Lawns

(By Jared Hoyle, KSU Turfgrass Research and Extension)

Earlier I posted the Homeowner Step-By-Step Guide to Cool-Season Lawns in Kansas so I decided that it would be good to go ahead and get the warm-season lawn calendar out there for everyone that is manageing zoysiagrass, bermudagrass.

The following is a lawn calendar for zoysiagrass and bermudagrass. Buffalograss, also a warm-season grass, but we will cover that separate because the management of buffalograss is a little different then zoysiagrass and bermudagrass.

For more information check out the Zoyisagrass Lawns Publication at the KSRE Bookstore – https://www.bookstore.ksre.ksu.edu/Item.aspx?catId=545&pubId=1451

For more information check out the Bermudagrass Lawns Publication at the KSRE Bookstore – https://www.bookstore.ksre.ksu.edu/Item.aspx?catId=545&pubId=586

 

Zoysiagrass and Bermduagrass Lawn Calendar

March
Spot treat broadleaf weeds if necessary. Treat on a day that is 50 degrees F or warmer. Rain or irrigation within 24 hours of application will reduce effectiveness.

April
Apply crabgrass preventer between April 1 and April 15, or apply preventer when the eastern redbud is in full bloom. This year we are getting a little warmer sooner but remember this cold snap that we just had would have killed any crabgrass if it had germinated. If using a product with prodiamine (Barricade), apply two weeks earlier. Crabgrass preventers must be watered in before they will start to work.

May – August 15
Fertilize with 1 lb. of nitrogen per 1,000 square feet per application. Follow the recommendations on the bag. More applications will give a deeper green color, but will increase mowing and may lead to thatch buildup with zoysiagrass. Bermudagrass can also have problems with thatch buildup but thatch is less likely with Bermuda than zoysia. Bermudagrass – Use two to four applications. Zoysiagrass – Use one to two applications. Too much nitrogen leads to thatch buildup.

One Application: Apply in June.
Two Applications: Apply May and July.
Three Applications: Apply May, June, and early August.
Four Applications: Apply May, June, July, and early August.

Remember to look and see if you are using a quick release nitrogen source or a slow release nitrogen source.  If you use a quick release source then it is immediately available but only lasts a couple weeks.  Thats why you would have to make a couple of applications like it is listed above.  If you are going to use a slow release source it will tell you on the bag how long the product will last.  Therefore, you might not have to make as many applications.

So generally you want to use a total of 2 to 4lb. of nitrogen per 1,000 square feet per year for bermudagrass and 1 to 2 lb. of nitrogen per 1,000 square feet per year for zoysiagrass.

June
If grubs have been a problem in the past, apply a product containing imidacloprid by mid July. Imidacloprid can be applied as early as mid May if there are problems with billbugs or May beetle grubs. These products kill the grubs before they cause damage. They are effective and safe but must be watered in before they become active. June is a good time to core aerate a warm-season lawn. Core aeration will help alleviate compaction, increase the rate of water infiltration, improve soil air exchange and help control thatch.


Late-July through August
If you see grub damage, apply a grub killer. If Imidacloprid has been applied, this should not be necessary. Grub killers must be watered in immediately.

Late October
Spray for broadleaf weeds if they are a problem. Treat on a day that is at least 50 degrees F. Rain or irrigation within 24 hours reduces effectiveness. Use the rates listed on the label for all products mentioned.

For more information check out the Zoyisagrass Lawns Publication at the KSRE Bookstore – https://www.bookstore.ksre.ksu.edu/Item.aspx?catId=545&pubId=1451

For more information check out the Bermudagrass Lawns Publication at the KSRE Bookstore – https://www.bookstore.ksre.ksu.edu/Item.aspx?catId=545&pubId=586

Always remember to READ THE LABEL for the correct rate, turfgrass tolerance, and specific instructions before application!!!

***Mention of trade names or commercial products in this article is solely for identification purposes and does not imply recommendation or endorsement, nor is criticism implied of similar products not mentioned by Kansas State University.***

Don’t forget to follow me on twitter @KSUTurf.

Also, visit our facebook page www.facebook.com/KSUTurf