Dead spots from spraying

[stringblade]

Hello all,

What happened? I have always been so careful to mix properly and never had this problem before. I am licensed and aware of the risks.

I was using a backpack sprayer mixed 1 to 1.5 onces per gallon of momentum and the hawkeye sticker. I sprayed these lawns on the 20 of Oct on November 6th I drove by one and noticed these dead spots the weird part is a lawn I sprayed right across the street with the same mix is fine? I did about 30 apps that day I haven't been to look at all but about 4 of 8 that I have looked at have the dead spots..

Does anyone have any insight on how some could have died and others didnt?

Is there any chance that the roots are not dead just the crown and these dead spots will come back in the Spring?

Could this have been because of cold weather? (it was about 60 degrees the day I sprayed)

Either way Im prepared to fix all damages I have done in the spring but not sure if Ill ever spray again

Thanks In advance

[steve-o]

What Did You Spray For First????

i gotta a whole lot of dead spots too, but they are grassy weeds that die this time of year.................


steve

[stringblade]

Oh well I dont think Ill ever figure this one out.

[lawrence stone]

Wrong product. Bad timing.

I had the same thing happen to me about ten years ago. If I can recall properly my application was in June and the turf was drought stressed.

But if you are applying in October you should be using an ester formulation vs. the amine (momentum). You will find you will get better results with ester formulations especially in cold weather. Plus you can buy a gallon of 2 way ester at tractor supply (makes 128 gallons of solution and covers three acres) for about $18.

In my part of the Commonwealth of JoePA on October 20 there was less than one inch of rainfall in the last three weeks.

Now why did some props die off while others did not? That's because some of the turf that was not treated with a grub control product had no root structure from grub damage, and the quadruple whammy of too hot a product, wrong product at the wrong time, drought stress, and insect impact was too much for the turf to bear.

[steve-o]

Good Answer Mr. Stone...........

Wrong product. Bad timing.

I had the same thing happen to me about ten years ago. If I can recall properly my application was in June and the turf was drought stressed.

But if you are applying in October you should be using an ester formulation vs. the amine (momentum). You will find you will get better results with ester formulations especially in cold weather. Plus you can buy a gallon of 2 way ester at tractor supply (makes 128 gallons of solution and covers three acres) for about $18.

In my part of the Commonwealth of JoePA on October 20 there was less than one inch of rainfall in the last three weeks.

Now why did some props die off while others did not? That's because some of the turf that was not treated with a grub control product had no root structure from grub damage, and the quadruple whammy of too hot a product, wrong product at the wrong time, drought stress, and insect impact was too much for the turf to bear.

i have come to a conclusion from a previous thread of mine that nobody on here knows what an ester based formulation is.


steve