Tag Archives: brown patch

Review Your season 2017

After the summer what was I hope everyone takes a well deserved break sooner rather than later..

I have written pieces to this similar to this in the past. i do believe writing this every year helps my readers with making better decisions for the coming year..

One thing I hope everyone has done this year in some way is to document the summer. With temperatures the way they were photo evidence is key not just for yourself but show stakeholders of your facility. The NSWGCSA has done just this to help turf managers work with facilities. A copy can be found here.2017-GMA info sheet

Pleas download the article above it is well written and can be ustilised for any turf facility not just golf courses.

I also have some slides from the GCSAA when they went through drought back a few years ago which may come in handy.

GCSAA drought and himidity stress

Now I also want you to download the weather data from BOM website (click on this link to find your closest weather station)  if you don’t have accurate records somewhere.This will show everyone and remind yourself on how much pressure your turf was under. In our job we watch the weather all the time. What i noticed and many of you know this is that the day temperatures were not the issue. We can deal with 40C days. It was the nights that caused the bulk of the issues. Night temperatures did drop all that much at night. Typically in January and February we saw a day of 35C-40C and night temps drop down to 25C only and that was only after midnight. Many posts I saw on Turf Management Australia Facebook page that guys were still at 30C at midnight and soil temps around the same amount.. How can we expect the turf to survive that whether it’s cool season or even warm season grasses.

These are the questions you need to ask yourself:

  • What were my issues
  • When did they start occurring
  • Did I expect them to occur then
  • Could I of dealt with the issue earlier
  • Did I have outside issues to deal with
  • Were the issues caused by nature or by putting the turf under undue stress
  • Was there anything you could have done better
  • Were you more proactive or reactive with the summer i.e did you have a preventative program or just deal with the issues when they arose
  • Did your program stack up

Come March we had a big change in weather up until that point it was hot humid March added rainfall. Temperatures were still high though.

One thing for sure was that spray intervals were greatly reduced. Where commonly 21-28 intervals were the norm this was being reduced to 7-14 days at times as the pressure was very high.

Did you utilise a broad range of control options for the issue (e.g different products, cultural practices, fertility). Specifically for fungicides did you rotate resistance groupings enough What can you do next season to reduce the issues

Does the course need to be altered in any way to help (i.e does drainage have to be put in or fixed, is building a new green/tee possible) There is alot more of a list which I could write but this is just to give you an idea on topics to think about. Keep in mind with the disease pressure this year fungicides you used had to deal with high pressure situations and where expected residual was normally 21-28 days you may have only got 10-21 days control for systemic products or even less with contact fungicides. The fungicide had not failed but more so the pressure was too high to give you control expected. If you would like some help with reviewing your specific situation please do not hesitate to contact me either via this blog or email


Regards Nadeem Zreikat

Disease and Mite Seminar 2016

In November ourselves and K&B Adams had the pleasure of presenting two of the top turf minds in Australia. Dr Percy Wong and Professor Peter McMaugh in Adelaide.

The day started off with a supers forum with Percy where new diseases that have been identified were discussed. A number of these had been seen in South Australia and are a concern that not much is known about them and research fund are needed to learn more as well as come up with plans to combat them. Percy also spoke about the need for accurate diagnosis. Just because it has certain symptoms its doesn’t mean that that disease is present and a good disease turf testing lab can help here.

I went on and spoke about a new fungicide we have coming in March next year. This is a brand new active ingredient with a broad range of disease control including dollar spot, anthracnose,algae and helmo and grey leaf spot.. More information to follow in the new year.

As well Monstar update is for full registration February 2017

Afterwards Peter spoke about mites and the work he has done and the work he is doing in correct identification of the mite as there are number of mites out there which effect different grasses. Alot of research has been done by Peter and counterpart Don Loch but plenty of work needs to be done and research dollars are needed.

I’d like to thank the following of helping with the day. Without associations and passionate individuals we would not be able to put these  pure education days:


  • K&B Adams (Sam Sherriff) in partnering with us to put this on and make it all possible

  • Turfwise Consulting

All notes have been sent out to the delegates.

The day has been nicely summed up form Ivan Swinstead from Tea Tree Gully Golf club

“ Listening to Dr. Percy Wong and Peter McMaugh, two of our industries leading experts, talk about fungal diseases and Couch Mite in turf, demonstrated to me the issues that we can potentially face in maintaining Couch playing surfaces at our facility. Having Wintergreen Couch fairways at our club for twenty plus years now, Couch Mite and fungal disease are problems that our club has to deal with each year. It was interesting in hearing the options for control in both areas.”

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Kicking it in to high gear- Grand Final Weekend 2016

I apologise for the lack of posts since the AGCSA conference. I have been traveling around the country getting to a bunch of seminars where we have sponsored them and given talks at some.

To give you an idea after the AGCSA conference I attended the following:

  • VGCSA Country meeting at Rich River
  • VGA Bendigo annual seminar
  • TGAA Corowa annual seminar
  • TGCSA annual seminar
  • SAGCSA conference
  • STA NSW Cricket Wicket 101 course (where i was an assessor for the day)

So as you can see it was fairly full on and the airline and rental car companies know me on a first name basis now. If you are on Twitter or a couple of the Facebook turf pages you would have seen a few pictures I posted as well. Let me just say if you haven’t had a chance to get to any turf turf seminars this year JUST DO IT. The information is first class and networking opportunities are endless.

Enough of that and onto the season. Well a wet start for most. Can someone turn the taps off please for a week or so. Plenty of weeds have been coming up as well and germinating quicker than usual. Get on top of this sooner rather than later.

One thing with the wet weather at least you can identify drainage areas that need to be worked on. If this is something you have in the back of your mind map it on paper so you can easily come back to it when you can.Skitch is a great app here where you can draw on pictures taken from your tablet.

As I write this we are still reasonably cool around Australia besides QLD (I don’t think they had winter this year) but it is about to heat will heat up i Sydney anyway around Grand Final time (Go the Swannies, not sure on NRL as my team is out). So here a few tips to prepare your turf:

  • Use turning boards for mowers, reduce victory lap cuts
  • Maintain adequate soil moisture throughout stressful times.
  • Keep a balanced soil profile (get a soil test do not guess)
  • Improve air flow – cut down trees/branches
  • Communication with the club management and members
  • Promote a healthy growing environment
  • Nutrition (Don’t be afraid to apply N – just know how much and what source)
  • Removing dew to reduce leaf diseases
  • Roll greens instead of mowing – alternate each day
  • Raise mowing heights (even by a 0.5 mm makes a difference)
  • Utilise bio stimulant products during the growing season such as kelp (proven to increase root mass), amino acid (heat stress), humic/fulvic acid products. For any bio stimulant look at what’s inside it and see how each component helps the plant- ask questions to those selling them.
  • Hand water with wetting agent tablets especially for drier areas

Weather for the week coming puts temps higher than they have been so far as you can see:






















Lastly 2 things the Monstar permit has been renewed please download the latest permit here

Also I have and event coming up in Adelaide in conjunction with K&B Adams, SAGCSA and Turfwise Consulting featuring 2 great Australian turf professors:

Percy Wong (Plant pathologist)

Peter McMaugh (turf and mite expert)

I will post more later but see all the information here


Good luck everyone hope you can get some downtime during the weekend. Feel free to contact me with any help needed





Dacogreen WeatherShield “The Ultimate Chlorothalonil”

Some facts you may not be aware of in regards to chlorhthalonil in Australi:

In 1971 (some readers would remember this) Colin Campbell Chemicals introduced chlorothalonil named Daconil into the Australian turf market giving us over 45 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/Daconil (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 and ask for DACOGREEN by Name

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

For label and SDS see here
























Extreme Disease pressure January 2016 -NSW

What a start to the year for NSW. After a a great greenkeepers Christmas January has turned to the extreme with high temps humidity and rainfall.

I started to see a few sick turf surfaces around the place just due to sheer pressure.

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

IMG_2388 IMG_2387







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 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
  • 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

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 the live blog I’ll be doing with Turf Republic again and along with my twitter feed. I will post all the link the week before.


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









High to Extreme Disease Alert Sydney – December 2014

Wow after the driest spring on record and a very dry and hot November December has had a u-turn. high temps high rainfall. This is what I saw yesterday on the radar and on the road. Yes it did get worse after I got home (pic taken by passenger). The red on the radar meant very heavy rain.


Radar 3/12 Can't see a thing



Photo 5-12-2014 11 05 51 Photo 5-12-2014 11 05 54

As you can see tfrom Monday 1st pythium pressure increased dramatically and is still extreme to high. Recommendation is Proplant as Proplant works in all disease pressure conditions especially known and proven as a strong pythium fungicide

Overnight I was speaking to a few supers on twitter on how much rain they received. There was quite  a difference with western Sydney copping about 45mm of rain while the eastern suburbs only got around 8-18mm which is very surprising since they are the ones who always get a drenching.

What all this means is that disease pressure is very high to extreme (my climate app report) at the moment and will be staying high for the next few days at least. Having a preventative program is the best option however even the best prevention program needs a little fine tuning. Here at Campbell’s we have Proplant available for pythium and is on the of the best products on the market available due to its curative abilities and longest residual over nay other pythium product. Proplant has been a trusted fungicide by meany turf managers for over 10 years now. In our trial work we did with Proplant we compared it against a standard pythium fungicide and found that the standard gave only 7 days residual while Proplant even at both the low and high rates gave 28 days.

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

Managing pythium is not just use fungicide but use every tool you have at your disposal and make observations on your turf. You need to take a holistic approach from mowing practices, watering practices and inputs you are using. See our guide to find out more.

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 the options we have are:
So have a look at partnering Proplant with Ippon, 250GT, Protak, Monstar,

Again please don’t hesitate to contact me if you have any questions.









Summer is upon us – November 2014

Well as alot of you do as I do we constantly look at the weather to see what possible turf growing conditions we are facing. At the moment we are looking for some rain (well majority of us are but  the golf tournaments are starting and the less variables the better).

I did a post on preparing for the heat last season and i thought it may be a good one to revisit just as a refresher with a few updates. If you at the past post the weather maps are quite similar for the long term forecast. (see 2013 post here).


  • Start with a strong foundation early.Don’t skimp.
  • Review what you did last year and change what did not work.
  • Increase root health -Use root stimulants such as kelp, amino, humic fulvic acid products
  • Look at your irrigation practices- This will be harder as the summer goes on especially when your cool season grasses are stressing out with a shorter root system. Keep the soil moisture consistent as not to stress our turf. There is no right or wrong method here but the aim is to get desired turf conditions (as Dr. Micah Woods says). (This is where soil mositure metres come in very handy- more on that in a future post). For an expalnation on water irrigation management have a look at the picture below from Micah Woods at the Asian Turfgrass Centre For more information on this work below see this link to his blog post.





  • With warm season grasses protect your turf early on as the root system is still not fully active.
  • Do a preventative fungicide and insecticide program. (if anyone would like a program designed for them please contact me). Under stress conditions some systemic fungicides may take longer to be taken up as the plant will not be fully functioning properly so be wary of this and apply fungicides on a prevention basis.
  • Have a wetting agent program and start earlier rather than later
  • When hand watering use wetting agent tablets to help cure and prevent localised dry spots
  • Increase your height of cut. This will go a long way to help manager all types of stress with minimum disruption to greens speeds.
  • Communicate with your stakeholders the stresses the turf is going under to give them an understanding of the situation and to better support you in the long run.


I have a few product profiles coming as well but in the meantime I have been getting asked why Dacogreen WeatherShield is different to other chlorothalonil products. It lies in the active ingredient and the formulation. Dacogreen remember used be Daconil until about 10 years ago, we just had a name change.

See my post from last year here





Finally some Rain for Sydney- October 2014

Regular readers our turf blog will know that I put out a post every year around this time for a disease alert for brown patch dollar spot and pythium. This year is a little late as it has been very dry and pressure has been low. However this is all about the change as I am writing this. The BOM has put out a forecast for this week of up to 100mm in some parts and its actually raining at our headquarters in Wetherill Park.

There are different types of brown patch that occur in turf. The main 2 species are solani and cerealis (yellow patch) strains of brown patch.There is some anecdotal evidence of other rhizoctonia diseases (which cause similar symptoms) present but these have not been DNA tested as far as I am aware.

Even on couch surfaces (tees and sportsfields) you will see some brown patch (solani strain though) as turf starts to come out of dormancy.

Solani can tend to occur all year round with the right conditions Yellow Patch has been a bit difficult to control once it is there. It tends to disappear with 28+ temps. This week temperatures are going to hover in the high teens and low 20’s.  If you have the disease there you may need to do 2 sprays 10-14 days apart depending on the conditions and products you use. For example Ippon (or 250GT) then follow up with Dacogreen or a registered product.. See pictures attached of the brown patch I was talking about (yellow patch). If you can do a preventative do it.

Brown Patch Brown Patch-2

I have a few other posts coming to stay tuned. I will have a update on Monstar our newish surfactant Filmstar and another surprise if you use pigments at all..

As usual if you need to contact me please feel free to email me zreikat@campbellchemcials.com.au



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








Facts about Colin Campbell (Chemicals) Pty Ltd October 2013



For some of my readers you know who we are and where we came from. With an increasing readership of this blog and many of you reading this outside of Australia I though I would give you a quick history on our company.


The company started back in 1940. We initially had products for horticulture markets, mainly in apples and pears. We then satrted to expand our range and from the 1960’s we started offering innovative products dedicated to turf management. 

These days we sell a wide range of products in horticulture and turf. We also offer a range of post harvest protection products for citrus, cherries, grapes, vegetables, potatoes and apples as well.

Our products are either made locally or are sourced from reputable suppliers we have been dealing with for quite sometime from US, Japan and Europe. In fact we have some partnerships  with suppliers that have spanned over 40 years.

Some of the well known achievements of Colin Campbell (Chemicals) Pty Ltd turf divisions has been


  •  Introduced mancozeb to the turf market


  • First liquid thiram (this is taken for granted now as before the late 80’s thiram in a liquid was very difficult to formulate as a stable product)
  • Developed 3 way herbicides in Methar Tri Kombi and Sportsground which are still just as reliable today as they were back 30 years ago.
  •  Introduced Pennside in 1985- microencapsulated diazinon inseciticde which was not only effective but gave longer residual and safety benefits over any other insecticide available at the time. This was the first microencapsulated insecticide introduced to Australia.
  • Devloped Tru blue the first acid dye spray indicator to be widely used in turf management


  • In 1971 we introduced Daconil (chlorothalonil) into Australia and continued to reformulate the product from a powder to a liquid in the 80’s and 90’s but always keeping the essence of broad spectrum disease control and superior sticking capabilities. Since 2003 we have changed the name to Dacogreen 720 and most recently in 2009 developed Dacogreen WeatherShield formulation which utilises the original source of the active ingredient  and superior surfactants to give even better sticking capabilities and results on a wide range of diseases


  • 2002 introduced propamocarb to turf as Proplant- the strongest pythium fungicide that has both preventative and curative propertites
  • In 2009 we introduced Blazon spray indicator technology to a wider market in Australia. Blazon is a non-staining polymer colourant that does not stain your skin, equipment or turf like acid dyes can. As we say “No more looking like a smurf”
  • Introduced Monstar (flutolanil) on permit for fairy ring control in 2011 Further work is being carried out for registration on fairy ring and Rhizoctonia.




Here at Campbells we pride ourselves in bringing the highest quality products to the turf industry. We test all products stringently before bringing the product to the turf market. Chemicals obviously have to be registered with the APVMA and many trials have to take place. We have experienced staff to do this or use outside contractors who have specific expertise in turf trials and with whom we have established long term relationships. Even when using contractors to do the trials we still conduct some of the trials ourselves to know the products inside out and test them in various climatic conditions.


Other products in our range that do not have to be registered are still evaluated with numerous trials. We use overseas data and claims as a starting point for our trial work to test the product.We DO NOT introduce an overseas product without the necessary testing under Australian conditions.


We make sure the product we are evaluating: 

  • Works 
  • We determine a rate or different rates to get the best possible result
  • The product does what it is meant to do
  • The product does not have any phytoxicity issues or non target issues
  • Test the limitations of the product
  • It lives up to the standard you expect from us. 


We do not take any short cuts. For instance here is a product we evaluated at various rates on both dormant couch and bent grass. We used what the overseas label recommended and other rates to see which rate would suit Australian conditions.As you can see the US rate did not work and we had to use the higher rate to be able to see a result.













We have a few products under devlopment in turf as well as horticulture. As you know we have been devloping Monstar (currently on permit) to gain full registration for fairy ring and Rhizoctonia. We are also evaluating a few products we have been initially testing from our horticulture side (this is great to do since we do those trials as well). I of course can’t say much more but be assured we are working to bring innovative technologies (both chemical and sustainable) and new ideas to the turf market. We have been committed to the industry for the last 55 years and will continue for a long time to come.


If there is anything I can help you with in regards to pest and diseases please do not hesitate to conact me via the links below.




Nadeem Zreikat
Colin Campbell (Chemicals) Pty Ltd
Phone: (02) 9725-2544 Fax: (02) 9604-7768

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