Turf Disease Outbreak!

This summer has provided the lawn care industry with a lot of challenges. While we can control the products used and application technique, we cannot control the weather. Heat, humidity, and rain have caused an outbreak in turf diseases in the Wabash Valley. We wanted to take some time to share what some common trends we are experiencing in lawn care. 

You may ask "Why does my lawn have the disease and the house down the street does not?" That neighbor may have a different type of grass, less shade, mow at the proper height of 3.5 inches, have better air flow, etc. We first need to identify the disease and understand all factors involved.

Disease Triangle

An easy way to understand why diseases in turf occurs is to look at what is called "The Disease Triangle". If one side of the disease triangle is missing, a disease will not cause a problem. The three sides are:

1. Host Component- the plant must be susceptible to disease. Depending on the type of grass in your lawn, you may be more at risk than others. 
2. Pathogen Component- the disease pathogen must be present.
3. Environmental Component- conditions must be favorable. 

Understanding the triangle can allow us to easily identify how diseases spread and attack lawns. 

Grass Types

Some grass types are more susceptible to diseases than others. Overall, Kentucky Bluegrass is the most high at risk, while turf type fescue has more disease resistance. Knowing what kind of grass is present in the lawn can be a key to identifying the disease. Some diseases will not affect certain grasses. 

During the heat, grass stops growing as fast. Most turf grasses have diseases in the spring months but go unnoticed because we are mowing so frequently. As the summer heat stress slows growing, the diseases can become more apparent and noticeable. Once it cools off and the turf starts growing, you will see significant improvement.  

Grass Types

Soil Fertility

Many diseases thrive based on the fertility of the soil. Diseases can become an issue depending on the grass type and soil fertility. If too little nitrogen is present, the turf may become more be more susceptible to disease, recover slower, and have a longer outbreak of symptoms. Our "Healthy Basic Lawn Program" is designed to carefully manage the amount of nitrogen applied throughout the year. 

Environmental Component

This summer has been unusually wet. Jessie over at Channel 2 has been talking about the record rainfall we have had in the last 3 months. Combine the rain with the humidity and you have the perfect disease growing condition. Turf diseases are a fungus, or mold. The hot, humid, and wet summer months has been the perfect environment for turf diseases to thrive. 

Disease Control

Treating a turf disease is very similar to treating a cold. We can apply a fungicide if desired, however, that will only be treating the symptoms. We also compare lawns getting diseases to human diseases. We have no explanation as to why I get a cold but my wife does not and we live in the same house. In most cases, the disease will not kill the turf. Once the temperature drops and humidity settles, we will see significant improvement in the lawn. 

Diseased Lawn

 Resources

Over the last 28 years, we have worked with many national, regional, and local organizations to stay educated and informed in the lawn care industry. One of our most reliable resources we have is Purdue University. Their free publication, Turfgrass Disease Profile, is a great way to learn more about turf diseases. 

Working with turf and lawns is very scientific. Everything that we say and do has a scientific reason behind it. We have to understand the full biology of the plant, the environment, and cultural practices to properly address any issues. If we inspect a lawn and come to the conclusion that a turf disease is present, we will let you know why, how, and what can be done. 

Be sure to follow us on Twitter, Instagram and Facebook and head over to our website for more information about our company. 

Midwest Regional Turf Foundation: Purdue Summer Field Day 2016

Purdue University Logo on turf

On July 14th, Dennis and I had the opportunity to attend the Midwest Regional Turf Foundation (MRTF) Summer Field day at Purdue University. More specifically, we spent 8 hours at the William H. Daniel Turfgrass Research and Diagnostic Center. I wanted to share a few of the topics that were discussed and some pictures from our day. 

It is very hard to accurately describe the Daniel's Center. The grounds hold 22 acres dedicated to studying turf, both residential and sport. Experiments happen daily at all times of the year. Professors and companies work together to test anything you can think of in the turf industry. Throughout the 22 acres, we were able to have hands on experience with the professors and their research as they led us through training sessions and discussion. Some of what we talked learned about was the "behind the scenes" experiments that happen years before a new product, equipment, or grass seed cultivar hits the market. Everything that was discusses helps us to provide a better service to you! 

Not all grass seed is created equally!

One of my favorite experiment plots at the Daniel's Center is where they are testing new cultivars of grass seeds. These experiments test several things including drought stress, disease resistance, and durability. 

Bluegrass Seed Plots

Many of the seed cultivars tested here do not have names. The manufactures test different species and mixes to see how they hold up over time. It was very interesting to see how different each plot was from those around it. These seed plots were planted 3 ago and have had proper irrigation, fertilizer, and weed control. 

The most obvious difference was in the Kentucky-31 or K31 seed. A homeowner will often read "Kentucky" and assume that it is a bluegrass. That is not the case! If you look close at the following picture, you can see the K31 is much lighter in color and has a wider blade.

Kentucky 31 or K31 grass between Turf Type Tall Fescue

Walmart and Rural King will have K31 grass seed on sale for a very cheap price. As you can see, even with ideal irrigation, fertilizer and weed control, the K31 stands out as undesirable among the rest. It goes to show that you get what you pay for.

Thousands of studies!

As the day progressed, we were able to learn about just a handful of the current studies that are happening. It was fascinating to hear how many different ways they test equipment, products, grass types, and much more. All of the experiments they preform are replicated at multiple locations throughout the 22 acre complex to ensure that they have the most accurate data. Below are pictures of some of the experiments.

This picture shows one experiment testing what affects mowing height and fertility have on dandelion blooms. A common theme throughout every experiment that involved mowing height was that the higher you mow, the less weeds are present. You can also observe that the turf is darker on the plots that are mowed above 3.5 inches.

Mowing Height Demonstration

The white grub is one of the most destructive insect pests in our region. This area is being used to test different behaviors of the white grubs and their adult beetles. It is fenced off with electrical wire and the beetles are protected in small cages to protect them from being eaten by animals. 

White Grub Management Experiment

The hot, humid, and rainy conditions have produced an ideal environment for many turf diseases.If you look closely at this picture, you can see the middle area was treated with a fungicide. The surrounding areas might have also been treated with fungicide but maybe at a different rate, with a different machine, or different formulation. 

Golf Course Turf Disease Management

This area shows the effectiveness of about 10 different types of crabgrass pre emergent used at the same time. The study went into detail so far as to test the effect of watering in immediately or waiting a week for rain. Each herbicide was also tested at different strengths.

Pre-emergent Experiment

Summary

Field Day Book

Overall we had a great day! Special thanks to everyone how put on this event and Dr. Aaron Patton who led many of our sessions. We had a great time learning about current topics in the lawn care management industry and how we can better serve our customers. A lot of what we talked about was how we can achieve better results. I was fascinated to see how many different ways they test one product before it even makes it back to the manufacture for final production. We talked about much more than what I can fit into this blog post!

As I have said before, lawn care is more than just a hobby. We are constantly reading and learning about different turf management topics. We utilize experts to become better informed so that we can provide the best service to our customers. While having a license to perform lawn care applications is important, a company also needs to have the knowledge of how to use that license. 

Be sure to follow us on Twitter, Facebook, and Instagram! Head over to our website for more information about services we offer.

About MRTF

The mission of the MRTF is to support turf research and education at Purdue University for the advancement of the turfgrass industry.

Visit www.mrtf.org to learn more about the Midwest Regional Turf Foundation.

"Why do I have weeds?"

This is Indiana. We all know how the weather is here. We joke about how one day it will be 75 and sunny and that same afternoon it can be snowing. Spring in Indiana is probably one of the most changing times for weather patterns. Why is this important to lawn care and weeds? The reality is that weather plays a huge role in all lawn care programs.

We receive several phone calls every day with the same simple question. 

"Why do I have insert weed name here?"

While this may be a simple question, it is not a simple answer. There are several factors that control how we address weeds. 

Soil Temperature

Herbicides are only effective when soil temperatures are just right. We might have a few nice days of 50-60 degree weather but the soil temperatures may still be well below what is required for the herbicide to be effective. We use charts and scientific trackers to follow when the temperatures are right to begin using the products. We can spray for weeds during our Early Spring application but it would be a waste of product, money, and environmentally irresponsible. 

Timing

The products that we use are of high quality, however, the proper timing and technique of the use of these products determines the results. We cannot guess on when we should make applications. Everything that we do has science behind it. Timing is one of the most important parts of the science. Like with soil temperature, we could apply products when the timing is least optimal but we would see less than satisfying results. 

Plant Type

Weeds are classified into several different categories. Grassy weeds, broad leaf weeds, winter annuals, summer annuals, not all weeds are the same. Each kind of weed also can require a different product to be effective. Some grassy weeds may not be affected by products that kill broad leaf weeds. Proper plant identification is very important in determining the product used. 

Many consumers buy products based on the picture on the bottle. They then apply that product at the first chance they get and disregard most of the printed label. Results are never as expected because misapplication likely happens. 

Misunderstanding of Application Terms

I have visited Facebook pages of several stores and product manufactures and see the same statements. "I applied the crabgrass pre-emergent and I still have dandelions. Your product doesn't work!" We also hear this from time to time here. 

A crab grass pre-emergent specifically targets crabgrass and the germination process of crabgrass. As stated above, different weeds are affected by different kinds of products. A grassy weed such as crabgrass takes a specific product to control. Dandelions and purple dead nettle take a different product. 

Many products on the market for residential consumer use are very misleading because they say things such as "Total Weed Control" when really it is just a pre-emergent. This label confusion has caused a lot of misled consumers with high expectations that are never met. Properly reading the label of what weeds are controlled will help you gain an understanding of what the application will manage.

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Nothing of what we do is a secret. Many lawn care professionals have spent years perfecting their lawn care management programs. Universities have entire degree, masters, and PhD programs on Turf Management and Lawn Care. I am not making any of these facts up either. For a very detailed article that goes into more about the specific science of weed control, click here!

As lawn care professionals. we are constantly learning from publications and attending courses hosted by Purdue University. We take our industry very serious. Lawn care is not just a hobby. Our industry provides over 800,000 jobs and $57.9 billion in economic impact. We want everyone to know that we are proud of what we do and our knowledge and expertise show it! 

We would love to hear back from you! Leave comments below or write us on our Facebook page. We also have a new website! Be sure follow us on Instagram and Twitter! 

Mowing Tips

I want to let you in on an industry secret. Having a dense and healthy lawn with minimal weeds begins with you! One of the simplest ways that you can begin to achieve the yard that you desire is by adjusting your mowing habits. Here are some important tips to follow that will help give you a head start this season on your lawn.

Mowing Height

I have seen too many residential lawns cut to look like a putting green. This needs to stop happening. In general, we recommend to our customers that they mow between 3 and 3.5 inches. There are several reasons that mowing height affects turf health. Mowing too low is known as "scalping" and can create brown areas that are often misidentified as diseases or other non-related causes. 

One of the biggest benefits to a taller turf is that it allows for the plant to build a stronger and deeper root system. This root system will be beneficial for building a dense turf, maintaining turf performance during drought, and limit weed competition. 

When assessing the mowing height of your lawn, we suggest that you DO NOT rely on the setting of your mower alone. Start your mower and cut a small strip and check that area with a ruler or tape measure. The deck setting on mowers are just a gauge and not a true height of the cut. Even if your mower says 3 or 4 that simply is just a guide and not the actual height of the cut. 

Infrequent Mowing

It takes a long time to mow. Sometimes it is easier to let your lawn go for a few weeks until you cannot stand to look at it any longer. You go out to mow and the tall grass bogs down your mower, giant clumps of grass are left all over your lawn, and you feel exhausted. While you might think that this is only a visual eyesore for your lawn, it is a very big problem for the overall health of your lawn. The stress caused on the turf from infrequent mowing is detrimental to plant health that will allow for more weed competition.

When mowing, you should never cut more than 1/3 of the blade in one mowing. If your desired mowing height is 3 inches you should be sure to mow before the grass is over 4.5 inches tall. 

Do Not Bag!

When you mow, the cut part of the leaf will fall back to the ground and return valuable nutrients to the soil. If you bag after each mowing, you are depriving your lawn of these nutrients that promote dense growth. The same goes with in the fall when the leaves fall. While it may not look the nicest if you mulch all of the leaves in your lawn, you are doing a huge favor in providing your lawn with extra nutrients that will be needed to last through the winter. 

Dull Mower Blades

One last tip that we suggest is to sharpen mower blades often. A dull mower blade will tear the leaf of grass instead of providing a clean cut. If your blades are dull, you will notice that the top of the blade looks frayed and white or brown. A dull mower blade will result in the plant to lose more water, heal slower, and have poor aesthetics. 

Dull mower blades leave turf damaged and frayed.

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We hope that you find these tips helpful in maintaining a healthy lawn. If you have any questions feel free to call us or visit our website for more information.

Our website has a new look! Check it out at www.bowmansproturf.com

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