Tag Archives: #dacogreen #chlorothalonil

Why Tank Mix Fungicides?

I was in a meeting a while back with a few superintendents and one of the questions was on dollar  spot and tank mixing. Was it worth it to tank mix fungicides for control? This is a situation that many other superintendents and turf managers  face with dollar spot (and other diseases) in Sydney especially under high pressure conditions where 28 days control is unheard of and 21 is a struggle at the best of times.




I know a lot of turf managers in US would be reading this and go through similar issues as well. Weather conditions play a big roll as we know.
Dollar spot in Sydney is a major issue and is pretty much a 12 month disease in many courses with the shoulder seasons more prevalent under a normal summer due to the prolonged leaf wetness and high humidity.. However normal summers are now changing.
Many of you know I am a big advocate of changing your fungicide groups for the past 15 years and I believe there is too much reliance on the DMI chemistry (FRAC code 3). To give you an idea there are 8 separate products with a Group 3 component in them. Just a little confusing. This doesn’t even take into account the generic versions available. So please when choosing a fungicide ask the questions of not just the active but the FRAC group as well.


To help with fungicide choices I have made up a chart for fungicides and their mode of action whether systemic or contact and what FRAC group they are. This can be downloaded clicking here. If you want a laminated copy pleas email me on the address below.
But back to the question of hand of tank mixing. There are 2 options here and I am making these assumptions as is in the theory but practically not relevant in many situations.
  1. Systemic fungicides last 28 days
  2. Contact fungicides last 14 days
  3. We are only dealing with dollar spot here not other diseases so our products mentioned are only dealing with dollar spot control. Other diseases controlled by those products will not be discussed specifically.
The 2 options are
  1. Tank mix contact and systemic
  2. Apply contact fungicide followed by systemic fungicide 14 days later
Option 1:
This option is a very strong option and is used regularly not just in turf but apple production as well.
The contact fungicide will work on any resistance strain of dollar spot and will start working straight away (temperature is not an issue) where as the systemic fungicide will take some time as it has to penetrate into the plant which can take time depending on the class of chemistry and the weather and turf conditions at the time of application.


Turf is under stress – the systemic will take time to be absorbed by the plant and if weather is  dry and warm the turf is struggling to take up the ai as well.This is why we always advocate to spray in the morning when the turf (cool season) is actively growing. So with this situation the contact fungicide is not effected but weather or turf stress and will start to work work by protecting turf as well as preventing new germination of the disease.
Please note pre mix products are valid here too. Just realise some pre mix products you may not get the residual control you are after. If that pre mix has a lower ai (active ingredient) amount in the dollar spot control product than the stand alone product you can buy.
Option 2:
This option can give up to 48 days control (6 weeks). The contact fungicide will give you up to 14 days and the systemic will give you up to 28 days. Realise that if applying a systemic with resistance issues effectiveness will either be reduced or have no effect at all so you are relying on the contact to knock over the resistance strain. Note same weather issues can impact here as well.
What would I do?
Well I would do both. Option 1 during high pressure times and when you need to target multiple diseases. As well I would use this option when you have a full blown attack of dollar spot.
Option 2 use at lower pressure times and in a more prevention situation may not eliminate the resistant strain of dollar spot if you have a full blown attack.However I would always mix my groups around and limit FRAC group 3.


There are also many cultural practices which have been proven to reduce dollar spot.I urge everyone do do these as well including:


  • Rolling
  • Remove dew
  • Reduce leaf wetness
  • Dusting
  • Maintain balanced NPK
  • Increase light and air movement- if you cant get rid of the trees can you at least trim some branches back?


Thanks for the idea guys I hope this helps in making the best decision for your situation. As always please don’t hesitate to contact me further via phone or email zreikat@campbellchemcials.com.au


Our new Emerald Fungicide will be available soon and fully registered for dollar spot and other diseases.

 Cheers Nadeem


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.













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









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.





Well after some mixed reports about the conference I can proudly say what a great week. The AGCSA did a great job not just running the conference but also encouraging many turf managers to come along. This is the first time the conference has been in NSW for over 10 years and a welcome return especially the trade who live within driving distance. Here are a few photos from the week.






AGCSA Conference 2015 – Live Blog

As an added bonus this year I will be running a live blog with help from my mates Turf Republic

In this live blog you will see updates form the week with information and pictures from the

  • conference dinner
  • tradeshow setup
  • tradeshow general
  • various social activities from the week

The Live blog Link is:


There will also be a TurfSnap badge available to anyone there. Just download the TurfSnap app See this link for more details)

You can also search for things about the conference using #AGCSA15

You can see plenty of photos from my twitter feed www.twitter.com/campbellturf


I will also be looking to use Periscope to live stream parts of the show. A link will be put out later on for this through my twitter feed www.twitter.com/campbellturf




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