(By Jared Hoyle, KSU Turfgrass Research and Extension)
With new herbicides entering the market, new techniques for controlling weeds, and with more and more difficult to control weeds the “Turfgrass Weed Control for Professionals” manual has been updated to address many of these issues. Check out the 2019 edition! It is a must have for every turfgrass manager!
To get your copy click here – https://www.bookstore.ksre.ksu.edu/Item.aspx?catId=545&pubId=20239
(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
https://blogs.k-state.edu/turf/time-to-fertilize-cool-season-turfgrass/
Monthly calendar for cool-season lawns for the rest of the year
https://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!
https://blogs.k-state.edu/turf/power-raking-or-core-aeration-that-is-the-question/
The art of knowing your seed label
https://blogs.k-state.edu/turf/the-art-of-knowing-your-seed-label/
For seeding success, pay attention to other crop on the seed label
https://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
(By Jared Hoyle, KSU Turfgrass Research and Extension)
Yellow woodsorrel (Oxalis stricta) is a perennial or annual broadleaf weed that has clover-like trifoliate heart shaped leaves. Yellow woodsorrel most commonly spreads by seeds that are contained in a capsule that when it explodes ejects the seeds. It can be confused with clover but has yellow flowers with five petals. You can find this weed in a wide range of soil conditions and can commonly be confused with black medic, birdsfoot trefoil and white clover. A similar species is creeping woodsorrel but it is most commonly found in landscape plantings while yellow woodsorrel is most commonly found in turf.
To control oxalis, herbicides that contain triclopyr and fluroxypyr are very effective.
Herbicides that contain fluroxypyr include;
Herbicides that contain triclopyr include;
Always remember a healthy turfgrass stand through proper maintenance is the best weed control and can help minimize oxalis in your turfgrass.
Information from this post if from “Turfgrass Weed Control for Professionals” To get your copy today click here – https://www.bookstore.ksre.ksu.edu/Item.aspx?catId=545&pubId=20239
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
(By Jared Hoyle, KSU Turfgrass Research and Extension)
School is starting back and college football is right around the corner. This tells me it is the best time of the year to start renovating, overseeding or establishing new cool-season turfgrass areas. But before you do that, you might have some unwanted weeds to get rid of. White clover is one of the most common weeds found in cool-season turfgrass. It can grow in a wide range of environmental conditions and can tolerate many of our cultural practices. It can also spread by seeds and by stolons.
White clover is a perennial broadleaf weed that has trifoliate leaves that may or may not have a wedged-shaped mark. Although it is called white clover the flowers are white but may turn pink as they age.
Because white clover can fix its own nitrogen some see it as an important species to add beneficial soil nitrogen. There had been some work done to explore using both clover and turfgrass in a mixture in their lawns. Others may consider it as a weed.
If you consider it a weed, fall is a great time to try and control it. But did you know 2,4-D, glyphosate and sulfentrazone do not control white clover? For best control herbicides that contain clopyralid, dicamba, fluroxypyr, florasulam, metsulfruon, and/or quinclorac (also controls crabgrass) provide the best control when applied in the fall.
Always remember a healthy turfgrass stand through proper maintenance is the best weed control and can help minimize clover in you turfgrass.
Information from this post if from “Turfgrass Weed Control for Professionals” To get your copy today click here – https://www.bookstore.ksre.ksu.edu/Item.aspx?catId=545&pubId=20239
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
(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
(By Jared Hoyle, KSU Turfgrass Research and Extension)
Did you apply a preemergent herbicide this year and still have crabgrass? There are many different reasons you may have break through from a preemergent herbicide application. If the turf is stressed and thin, along with over use of the turf and misapplications are some reasons you may be seeing crabgrass pop-up across many turfgrass areas.
Good news! There are some postemergent herbicide options out there for crabgrass control. But depending on how big or how many tillers the crabgrass has will help you determine what product to use. First, determine the size or stage of crabgrass you have present.
Here is a picture to show the tillering stages of crabgrass.
The smaller the crabgrass the easier it is to kill it. The tillered crabgrass may take more than one application and higher rates so make sure you check the label for correct application rates and intervals.
As one last reminder, do not apply post emergent herbicides when temperatures are greater than 85 deg F. This will increase the risk of turfgrass injury.
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
(By Jared Hoyle, KSU Turfgrass Research and Extension)
As I talk to turfgrass professionals across the state I hear that some are getting plenty of rain while others are getting none. This time of the year we think that if we are getting some precipitation we will have yellow nutsedge popping up everywhere. Well that is not always true. Yellow nutsedge does favor moist soils but it can also grow in well-drained sites.
One of the easiest ways to identify yellow nutsedge is by a couple special features;
To control yellow nutsedge, if you can get applications out before tuber production then you will see increased control. But beware, yellow nutsedge will continue to grow as long as the environment is favorable for growth, so more than one application maybe necessary.
If using a herbicide application timing is critical. During mid summer yellow nutsedge starts making tubers and if you apply herbicides before tuber production you will get better control. If you wait until the yellow nutsedge is big and starting to make tubers then you will be playing catch-up all year. So sooner is better. Don’t wait for it to get too big.
Here are some options for yellow nutsedge control for turfgrass professionals;
There are many different products out there that contain these active ingredients so just make sure you have an active ingredient that has yellow nutsedge control! Also make sure you check for turfgrass tolerances.
****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
(By Jared Hoyle, KSU Turfgrass Research and Extension)
Return of the Goathead – Sounds like a horror movie! Well, right now I do feel like it is “Return of the Goathead”. Just about everywhere I look I see a goathead. Goathead is also known as puncturevine (Tribulus terrestris). It is a summer annual broadleaf weed that can cause headaches for many people.
This weed is a prostrate mat-forming weed that can produce many burs with sharp spines. This weed if invading a lawn, athletic field, playground and parks can cause injury to children and animals if they fall on or step on the sharp spines. It can also be found in disturbed areas as fields, pastures and roadsides. Good news is that many of the broadleaf herbicides are effective.
****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
(By Jared Hoyle, KSU Turfgrass Research and Extension)
Garlic has a very distinct and pungent smell, stinks… don’t it! But did you know there are benefits to eating garlic? It is highly nutritious but has very few low calories, it can help combat sickness, it can reduce blood pressure, and more.
Around Manhattan I have been seeing a lot of wild garlic in lawns. Now don’t go out and eat that wild garlic. We are now talking about the turfgrass weed wild garlic and not the garlic you eat.
Wild garlic (Allium vineale) is more obvious in the winter and early spring because this weed will grow above the turfgrass canopy and is easily noticed. Sometimes it can be easily confused with wild onion and star-of-Bethlehem.
Wild garlic is a perennial bulb that has a grass like appliance. It emerges in late winter and early spring. The leaves are straight and smooth. The way to tell the difference between wild garlic wild onion is by tearing the stem to see if it is hollow or solid. It if is hollow then it is wild garlic. If it is a solid stem then it could be wild onion.
This weed tolerate a wide range of soil conditions but I have noticed it more in low maintenance areas.
Control of wild garlic in cool-season turfgrass is more difficult then in warm-season turfgrasses. For fair control use 2,4-D or one of the many combinations of 2,4-D, MCPP and dicamba. This products have shown to have limited control. The ester formulations of 2,4-D are more effective than amine formulations. Applications in the late fall and early spring when there is adequate foliage is best. To increase uptake, mowing before application may help.
In warm-season turfgrass metsulfuron or metsulfuron + sulfentrazone and sulfosulfuron provide very effective control. Applying these products in late March early April on a warm day above 50 deg F when there is good soil moisture will increase efficacy.
If you got wild garlic, right now is the time to go out and get it. Not to mention if you have any other broadleaf weeds you will get some control of those as well!
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
(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 – https://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;
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
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