Tag Archives: GIS

GIS 2017 Orlando Florida summary

I’m back from the US from the Golf Industry Show (GIS) in Orlando. I attended as usual the education conference on Monday and Tuesday and then the trade show the other days. My week concluded with a visit to the University of Florida to visit Dr Phil Harmon and Dr Carrie Harmon along with their lab technician Jeremy. I visited the university as we have done some disease diagnosis and resistance testing in the past with them (where I showed resistance in Sydney to the DMI class of fungicides to dollar spot). We discussed issues in the area and compared to Australia QLD is similar with all the warm season grasses.

I was shown around the lab where they take extra protocols with international samples. Everything has to be spot on especially receiving foreign materials. The process is the same as the local samples but the extra care has to be done.One thing I was impressed with is that a simple test is not so simple when the diagnosis becomes difficult and further analysis is done to get an accurate diagnosis for the client. I was also intrigued by all thre parts of the world where samples have been sent from, they truly are an international diagnosis lab.

Myself and the University of Florida team (Phil, Carrie, myself & Jeremy). Thank you so much everyone for taking out the time and look forward to working with you in the future.

I was very active on social media and many of you may have seen the videos of each day I did. If not here they are which give a good summary of the week. I will post more on the education seminars down the track. However if you have any question please don’t hesitate to contact me.






Stats from the show:

13,600 people attended across the week

5800 people went to the education seminars

Whats new?

Well not alot to be honest, but the most exciting thing was the GPS spray units now commonly available. Hopefully we will see these at our show from Jacobsen and Toro.These units will make spaying more efficient and changes on the go will be done in an instance- which will reduce the need to change your nozzles or water pressure all of it is done automatically.

I have been getting a few messages on digital job boards. I was at a presentation during the show from Jason Haines form Canada who i speak to regularly on twitter. He is an expert in this field and runs one for his 9 hole course for 3 staff. It is very simple to setup. For more information visit his digital job board blog www.turfhacker.com

Thank you to everyone who enjoyed my social media posts while I was over there. As well it was great to catch up with friends and make new ones.


i will post on the education seminars lately but in the meantime enjoy the pictures form the show.













Heat wave, humid, rain birings on pythium- January 2017

Happy new year everyone I hope you had some time to enjoy with family and friends.

What a start to the year heat waves in Victoria, WA, SA NSW. Storms in QLD and everything in between.


Non disease Issues you may face

I have been seeing quite a few sick started to see a few sick turf surfaces around the place just due to sheer pressure from the heat, lack of rain and too much rain. One thing to keep in mind when there has not been alot of rain like especially here in Sydney is to look sodium levels. i have seen this season and in the past poa really going off colour and t

Generally speaking this may not be an issue every year or your water source might be quite low in sodium generally speaking. However this does change over time and has to be monitored. As well having low levels is good but bare in mind putting on a little all the time will build up in the soil and the plant and cause the plant to suffer. Keep this in mind this season, look at an few applications of a product that will reduce sodium levels. Talk to your local rep on this as this issue can be the underlying cause of disease especially pythium..

Another issue you may see is nematodes. Again you may not have a history or testing for them numbers have come back low. However I remember a talk I heard on nematodes from David Westall he always said that the numbers don’t tell the whole story and your threshold may be different to the person down the road.

If your turf is stressed and the root system has shrunken you are more prone to an attack as the plant can’t fight them off naturally.so keep an eye out.

With these conditions you need to look at for the remainder of the summer is your spray program.Normally 3 week intervals are working but with this much pressure you need to look at shortening intervals to 2 weeks. On top of that a in between spray may be needed just to top things with the onset of heavy rains.

The week ahead


Pythium is one disease that will be present now.

Water logged greens are a perfect environment for Pythium root rot. You can see Pythium as patterns in greens that follow the drainage lines. Equipment use also spreads the disease. If you have a short root system with compacted soil and poor drainage, your turf will need extra light watering to keep it alive. This will increase Pythium pressure, due to plant wetness. On the other hand, deep infrequent watering can increase Pythium pressure as well as the roots and the soil are being completely soaked which is conducive to Pythium outbreaks. Very hard to win in this situation. That is why it is important to maintain healthy turf and to use specific Pythium fungicides on a preventative basis.

Apply your fungicide (use Proplant here) down past the leaf and crown do not leave on the surface with application (water in slightly after your boom application)

Proplant image

As always we do recommend a broad spectrum tank mix partner with Proplant (as its is specific to pythium only) as when we were anyalysing the samples in the trials we always found other diseases namely brown patch. So have a look at partnering Proplant with Ippon, 250GT, Protak, Monstar,

Also be aware of algae with all the wet surfaces. A good mix is Dacogreen + Liquid Dek here.

Cultural Controls of Pythium:

  • Avoid too much N
  • Aerate the area slightly to allow more oxygen to penetrate the soil
  • Utilise pentrant wetting agents to push the moisture through the profile-I don’t tend to recommend to use with Proplant as it may push past the plant where you need to target the spray
  • Keep plants healthy as possible with using root stimulants and other biological products
  • Avoid mowing in moist hot weather
  • Raise mowing heights
  • Avoid verti cutting, top dressing if greens are infected  as it puts more stress on the plant
  • Reduce leaf wetness
  • Increase air flow and sunlight to Pythium prone areas
  • Reduce sodium levels
  • Monitor for insects

For more information see the brochure here Proplant Brochure Also have a look at our guide to managing pythium not just from a chemical point of view but from a cultural view. Disease guide rhizo eri pythium 2014

I hope this post helps understand the disease a little better and how to manage it.

Also I am heading to to the USA to GIS again and will be attending a few lectures that i will post about later on. You will be able to follow what is going on through my twitter feed.

As usual if you need any help feel free to contact me


US Turf Conference 2016- San Deigo

As my last post I went to the US for the GIS conference as it is called. This year was in San Diego which is about 3 hours south of LA. Its a great city and people say its very similar to Sydney with the feel and the harbour. It does somewhat and the weather was glorious. We were very lucky as it was  26C everyday and not a cloud in the sky

My week started as soon as i landed and headed to Mission Viejo Golf Club where I was shown around by course superintendent and my mate Scot Dey. I met Scot last year after speaking to him on twitter for a while and we have been communicating ever since. It was great of him to give me so much time on a Saturday to show me his course. The unique things about the course is that its all kikuyu. Not uncommon in Australia but it is in the US. They have some couch left but this is being eradicated and the kikuyu taking over. When I was there they had some frosts around which hit the roughs more so. The greens were 100% poa and looking and playing very well. They are going through one of the toughest droughts of the moment but Scot and his crew have done a fabulous job.

Myself and Scot

Looking at the clubhouse Par 3 drop

iphone 7-3-16 011 (Copy) A very long tee

Scot also hosted a group of Aussies the next day. The course management were quite impressed with how many visitors and how far we had come to see the course.

Feel free to hit Scot up on twitter @scotdey





















GIS week for me started with meetings (I wont bore you there) and the education conference which I attend each time. This years lectures for me were:

  • Advanced Stress Management Strategies for Cool-Season Turfgrasses
  • Practical Turfgrass Microbiology
  • Enhanced Weed Management

All three were very informative and i will be positing in the future information from these talks.From what I picked up what we are doing here is the right thing in regards to managing healthy turf especially with the weather we have had this summer. However there is always room to fine tune your program.

One thing I did get was a video of syringing a green. which can viewed on our you tube channel. I received this from Dr Bingru Huang at Rutgers university.

These are the stats from the show


  • 5240 attended the education seminars
  • 450 played in the golf championships with Chris Burgess our Australian representative
  • 12571 total attendees for the week
  • Trade Show Size 2.3 hectares

You can see from the pictures in the gallery how big the show was. I did like a few features that were different this year.

The electric avenue area was a new where you could try out different machinery. I have a video as well here from a one man golf cart where you can view from our you tube channel

As well which is not turf related but golf related is this company I saw who allow people with disabilities can play golf. Have a look at the video below.

Lastly the GCI Magazine Social Media Awards 2016 were on again sponsored by Aqautrols. Take a look a all the winners from the show and feel free to hit them up for any information.


i will be posting more in the coming months so stay tuned.


CCC, K&B Seminar featuring Percy Wong & Gary Demspey August 2015

Last month I was honored to be part of a educational seminar put on by K&B Adams (our Victorian Distributor) and ourselves featuring Dr Percy Wong from the University of Sydney and Gary Dempsey Superintendent NSW Golf Club. Percy and Gary have been in the industry a very long time and their experience really showed as they answered plenty of questions along the way.

Dr Wong spoke on new turf diseases that he has been researching and the impact that this will have in the long term to the industry without adequate funding. We hope here at Campbell’s this has increased awareness to the delegates in what needs to be done as an industry to deal with these diseases..

Gary Demspey spoke about the Aqua Aid Wetting Agents and the new technologies available to turf managers as well as the sunscreen product Turfscreen. For more information see Aqua Aid website.

I was last up and spoke on fairy ring management and updated delegates that Monstar has been submitted to the APVMA for fairy ring and brown patch (rhizoctonia) control.

iphone 180 iphone 186 iphone 177



Feedback from the day was very encouraging with many delegates learning more than what they expected to. thank you to the AGCSA and Turfmate for attending and writing about the day on their websites.

All delegates received information in their show bags as well as bonus material which has been emailed out as well.









A big thanks goes to the VGA who helped bring Percy down for their seminar the day before which we were happy to be a part of as well; Thanks to Gary for making the trip down and K&B Adams for getting the the number of turf managers that we had.Lastly thank you to all that did turn up we hope to bring you more education days like this in the future.




Dr John Kaminski seminar review December 2013





On Thursday 19th December about 50 turf managers and industry representatives attended the Dr John Kaminski turf seminar presented by Colin Campbell (Chemicals) Pty Ltd.


Dr Kaminski spoke on the following topics:

  • Disease managment & plant health
  • Pythium
  • Anthacnose
  • Thatch Collapse
  • Social Media (to contact Dr Kaminski find him via twitter @itweetturf)

John presented some interesting points and by all accounts the delegates took something back to their facility that they could implement the next day. One of the big things that I tweeted out was that the need to monitor your turf and keep looking at it up close especially during the peak stress times so you can prevent issues from getting bigger than they have to.


As well .an interesting point was raised on getting soil pH testing in different parts of the profile as a normal soil test gives you a reading from the hole sample a test at different soil depths can have different readings and can impact your turf quality.

For more information on the points of the day please feel free to see www.twitter.com/campbellturf


I would like to thank the NSWGCSA and STA NSW for contributing and helping with the day without assocaitions like this we cannot have the calibre of speakers like Dr Kaminski. Please visit their sites to sign up as members. For those who require AGCSA accrediation points your detials have been sent to the AGCSA.


To the staff at St Michaels Golf Club thank you for being so easy to deal with the day went off without a hitch and to Russell and the course staff who presented a beautiful backdrop.


Lastly thank you to all those who came to the day I hope you got out if it as much as I did. I know some of you travelled from interstate to be there and I appreciate you for making the effort especially those who made it just for the day. (By the feedback I got later that day and this monring everyone enjoyed the day).


For those reading this blog for the first time thank you and I hope you enjoy it. Feel free to browse past posts of mine.


I will be moving the blog shortly to our new website which has been recently been redesigned and updated with all labels and MSDS can be found at:


I will be having more content in the future on the website with videos brochures and general turf information.


Lastly I hope everyone had Merry Christmas and have a happy new year from everyone here at Colin Campbell (Chemicals) Pty Ltd Thanks for all the support over the year and I hope this blog has helped you with your turf management. I hope to see you all next year again whether it is at your facility or at one of the many education/trade shows we will be at.



Nadeem Zreikat


 Below are pictures from the Dr Kaminski day:



 Thanks to NSWGCSA and STA NSW for helping out on the day




 The Victorian guys with John Mark (K&B Adams) Chris (Keysborough) John and Colin (Flinders)


 Questions were a plenty for John.


Myself and John below








Dacogreen WeatherShield- superior sticking capabilities – October 2013

In 1971 Colin Campbell Chemicals introduced chlorothalonil into the Australian turf market giving us over 38 years experience. From the initial formulation as a wettable powder, then into a SC (suspension concentrate) and now to the brand new WeatherShield formulation we have always continued research and development into chlorothalonil giving us insight into the working and benefits of this broad spectrum fungicide.

Dacogreen WeatherShield is an evolution of the original Dacogreen (chlorothalonil) formulation that been the basis of broad spectrum disease control in the turf industry.

“WeatherShield Technology™”
Dacogreen WeatherShield is a superior surfactant technology.  This technology allows for:

● Improved sticking capability

● Smaller particle size (reduced from 3.5 to 2.5 micron) that spreads evenly for turf protection 

● Improved rainfastness over the original Dacogreen 720

● Superior rainfastness over generic chlorothalonil formulations


Two trials were conducted on cucumbers to observe coverage and rainfastness of the following chlorothalanil based products:

  • Dacogreen 720 SC (original formulation)
  • Dacogreen 720 WeatherShield
  • Generic 1 chlorothalonil and 
  • Generic 2 chlorothalonil

Cucumber leaves were chosen for the trial as product retention results could be measured more easily than turf leaves. Three replicates were performed for each product

Trial 1 measured the retention of chlorothalonil after simulated rainfall of 40mm of rain over a 2 hour period 1 hour after application. Note, that with this trial the leaves of the plants were not totally dry before rainfall occurred due to slow drying conditions.


Trial 2 measured the retention of chlorothalonil after simulated rainfall of 40mm of rain over a 2 hour period 24 hours after application.  In this instance the leaf of the plant was totally dry before rainfall occurred.





In both trials Dacogreen WeatherShield and Dacogreen original out performed Generic 1 and Generic 2 chlorothaolnil formulations easily for retention of product with more than double the retention. What this means is that using Dacogreen WeatherShield enables you to be confident that Dacogreen WeatherShield will still give you the results desired even with the onset of rain soon after application.


So next time choosing a chlorothalonil product for a broad spectrum disease control have a think about what you are getting.


Dacogreen WeatherShield is registerd for use in Australia at the following rates 



Dollar spot,

13L-20L per hectare


Brown patch (rhizoctonia) 

13L-20L per hectare


Grey leaf spot control. 

24L per hectare


Always read the label before using any product.

Dacogreen is a registered trademark of Colin Campbell (Chemicals) Pty Ltd

























Fungicide Reistance Parts 1&2 Nov 2012

Fungicide Resistance

This is a topic close to me as when I develop programs up for turf managers I always ask what their problems are and when do they occur, how there budget is etc. Pretty much what GCI Magazine just published with their “Get with the plan” story in the September 2012 issue. I go away and devlop a program and usually come back with a varied program to what they are already doing. One thing I always try to do is educate turf managers on is resistance and the need to be aware of it and steps to minimise the onset of it especially with less than less newer fungicide groups being developed. In Australia we have no documented cases of resistance (in fungicides, herbicides or insecticides) in turf, not that there isn’t any it’s just that work has not been done. For those in the US and Canada reading this I’m envious of this service you guys have where you can easily get samples tested for a nominal fee from local universities. We don’t have that service in Australian turf.

With this post I wanted to outline the basics of resistance and give you a few helpful tips when choosing the product for the job. You can relate this back to herbicides and insecticides but I will be concentrating on fungicides. 


On a side note there was an interesting blog post by one of our horticulture retailers on herbicide reistant rye grass. Have a quick read on this as in turf we use the SU Group B herbicides that they talk about. Click here

What is resistance?

Resistance occurs when a fungus which was sensitive to a fungicide becomes resistant to it (Vargas). Another definition is “resistance is a genetic adjustment by a fungus that results in reduced sensitivity to a fungicide. “(Damicone)

There are 2 strains of fungus in turf. These are the:
•    Wild Type Strain &
•    Resistant Strain

The Wild Type strain is the natural fungus in the turf that has been present before any fungicide has ever been used. The fungus is sensitive to the fungicide and thus the fungus is eliminated.

The Resistant Strain is the fungus that is not eliminated by the fungicide.The build up of the resistant strain is caused by repeated use of the fungicide and the selectivity of the fungicide against the wild type strains and for the mutant resistant strain. Thus the fungicide only works on the sensitive strain and not the resistant strain, which in turn becomes an increasing proportion of the total fungus population, as long as that fungicide is continually used as a selection agent.

Keep in mind that it is the mutation of genes that causes resistance. The fungicide applied works on the fungus that is the wild type strain thus allowing an increase in the resistant strain. Once the resistant strain is dominant and the wild type strain is the minority the fungicide will no longer be able control the fungus, hence resistance. Another way of putting it is “The fungicide selectively inhibits sensitive strains (Wild Type) but allows the increase of resistance strains (Damicone).”


Chooisng the right product for the job

There are many products out there to control the same disease in most cases. Some are better than others.

What’s important here is when choosing a products is ask yourself the following:

  • Is it turf registered on the disease you want to target  
  • Is there more than one disease you need to treat
  • Is it curative or preventative spray
  • Do you need a systemic or contact fungicide or both
  • Is it worth doing a tank mix
  • Will you need a reapplication of another productin 10-14 days time
  • What else are you doing to get recovery from the turf
  • What resistance group is it- am I applying too much of this group  

One of the most common complaints of fungicides is that “the product did not work or work as well as expected”.There are many factors that are the more likely to cause this rather than resistance.Resistance can only be proven by scientific means.

Keep in mind: 

  •  Right rates are used
  • The fungicide is applied correctly with the correct equipment, water volume and  timing. Understand how the chemical you are using works.
  • The spray equipment is calibrated correctly and running efficiently. Especially make sure the nozzles are in good working order and they are the correct type.
  • The more established the disease the harder it is to eradicate it-  hence  there may not be as long residual as expected from the fungicide and follow up applications at shorter intervals will need to be made.
  • If you have resistance to a  fungicide group on one disease you can still use that fungicide group on other diseases. For example if you have resistance to Ippon (Iprodione) on dollar spot you can still use it for brown patch control and other diseases on the label.
  • If the grass is too weak not even the best fungicide will revive it-hence recovery is essential to minimise re-occurrence of the disease.

I will have part 2 a little later on

Any questions as always please email me at zreikat@campbellchemicals.com.au



Nadeem Zreikat


Part 2

In this 2nd part I will concentrate on  and differences between contact and systemic fungicides and different strategies you can use.

Contact Fungicides 

Contact fungicides are multi site fungicides and have a minimal chance of resistance due to the fungicide attacking many different vital systems of the fungus and have multiple modes of action. They form a protective barrier around the plant tissue (i.e. chemical barrier between the fungus and the plant). They do not penetrate the plant. They generally last only 7-14 days depending on the physical removal by mowing, physical wear by players, sunlight and rainfall/watering New shoots are not protected. Contact fungicides generally only work on a preventative basis. Examples are Dacogreen WeatherShield (not prone to washing off due to formulation), Flowable TMTD, Mancozeb

Systemic Fungicides

Systemic fungicides are absorbed by the plant. The fungicide works inside the plant to control the fungus and stop the plant from being infected and will also protect new growth. Hence systemic fungicides work on both a curative and preventative basis. The residual effect comes from the fact that the plant has absorbed the fungicide and, once absorbed water and sunlight is not an issue. However, degradation by the plant metabolism may still occur. 

Systemic fungicides are classified into 4 groups

Full systemic fungicides move up and down the plant. The only product available is Signature.

Basipetal systemic
• Basipetal systemic fungicides are translocated throughout the plant in a downwards direction through the phloem (sap). There are no products currently available.

Acropetally systemic

• Acropetally systemic fungicides are translocated throughout the plant in an upwards direction through the xylem (water transport). Hence it is important to wash these fungicides off the leaf surface so they can be absorbed by the roots. Examples are Tridim and Proplant.

Locally systemic or meso systemic
• Locally systemic fungicides move below the plant surface but will only move very short distances. They have similar characteristics to contact fungicides in that they protect the plant at the point of contact but, unlike contact fungicides, they move into the plant tissue. These are also commonly known as translaminar because, when applied to one surface of the leaf, they are able to move through the leaf to the other surface of the leaf. Examples are Ippon and Protak.

Be aware, even though systemic fungicides have a residual of up to 28 days they may last much less than this depending on disease pressure at the time. If disease pressure is high with wet day/nights, high night/day temperatures and high humidity, the fungicide may not control the disease for 28 days and subsequent applications may be needed even at possibly 10-14 days intervals. If spraying on a curative basis the fungicide is less likely to last the full 28 days as well. Bare in mind using the lower label rate (if available) of the product will also shorten residual and may not have curative properties.

On a side note – if you are continuously spraying and not sure why the issue is not going away look at your plant health. Is there other things at work here such as insect damage, nematodes, heat stress etc.

Strategies for Resistance

There is no wrong or right strategy here. What is important is mixing up your resistance groups. Not just your active ingredients. For example we have Tridim (triadimenol) & Protak (prochloraz) for dollar sport control. Both have different active ingredients but are the same Group 3 (DMI) Fungicides. So if you were using Tridim then followed by Protak you are not doing anything to combat resistance you are only increasing the risk.

My suggestion would be to to do the following to really mix up your groups.Here is an example for dollar spot control with our fungicides.

App 1: Tridim (Group 3)

App 2: Dacogreen (Group M5)

App 3: Ippon or 250GT (Group 2)

App 4: Protak (Group 3) 

App 5: Vorlon (Group 1)

 As you can see in the 5 applications for dollar spot I have used 4 different resistance groupings

Limit the use of high risk groupings. In turf Group 11 (e.g Azoxystrobin, Trifloxystrobin-this is active comes in a pre mix fungicide) and Group 1 (Vorlon Thiabendazole) have a higher risk of resistance. Use these products mainly for preventative measures rather a curative application. There is worldwide resistance documented to Group 11 fungicides in various crops and turf.   

On a side note – when filling out spray records always include what group you used.This will allow you to monitor and recall what groups you have been using throughout the pressure times.

What about Pre Mix fungicides:

Pre Mix fungicides are good tools to help combat a broad range of diseases and can help with resistance management as there are usually 2 (can be more) different groups in a product. For example Headway and Dedicate have the groups 11 and 3 in it and combat a wide range of diseases. However you still need to be aware even if using them you are still applying that group on the disease (so limit the amount of sprays in your program to what is recommended) and these products may have less active ingredient in the product hence you may get a shorter residual control period than the stand alone product.

With fungicides always look to apply them at the right time on a prevention basis in pressure times. If the disease has taken hold it may take multiple applications to get the disease under control and increase resistance along the way. As well being weakened other diseases which are not normally an issue start to become prevelant. I have seen many tests come back with diseases such as phoma and bipolaris from the samples. These are more secondary diseases. You have to ask yourself why are these diseases there in the first place.

Cultural Practices

This is one of the most useful tools in resistance management. If utilised cultural practices can reduce the instance of disease and thus putting less pressure on your fungicide and even reduce the number of applications in a season.

The following cultural practices will help in aiding disease management and improve the turf surface:

Removing dew (use DewCure here or dew brooms) to reduce leaf diseases

  • Rolling greens (this aids especially with dollar spot and anthracnose management)
  • Frequent dusting
  • Spoon feeding with a balanced NPK
  • Raise mowing heights in stressful times
  • Increase air flow and sunlight to diseased prone areas
  • Reduce thatch
  • Improve drainage
  • Keep a balanced soil profile (get a soil test do not guess)
  • Keep mower blades sharp to reduce injury 

All in all this is just a short summary on resistance management. There is plenty of information out there which can be utilised.

If you are interested in reading more on the subject there are two great book that I use on a regular basis:

  • A Practical guide to Turfgrass Fungicides by Richard Latin (one a side note I will be attending Dr Latin’s class at the GCSAA conference and will bring you up to date information here)
  • Management of Turfgrass Diseases by Joe Vargas

Take care and if you want to contact me please don’t hesitate to email me  



Nadeem Zreikat


All products mentioned are registered trademarks of their respective owners