Missed patches or over feed?

[icedgoblin]

Hello all

Firstly I appreciate you reading this and any advice or help you may offer.
I am a gardening amateur since we have recently moved into a house with a garden from an apartment. The lawn was looking a bit shabby after the winter so I went about reviving it. It appeared a bit compacted so I went through the arduous task of hollow tinning it manually. There were a fair amount of weeds and moss and not knowing any better I thought it best to apply Evergreen 4 in 1, after all if it did what it said on the tin then I would be sorted. Further reading suggest that this is probably not the best process to follow I.e. weed and feed separately.

Anyway, to cut a long story short, I did apply the said product On the whole the lawn did start growing rapidly, got a lot greener and much thicker. I am mowing to 40mm each week as it is growing so fast that staying within the one third guidelines for mowing I would have to mow every 3 days.

I have however started to notice what I think are yellow patches. Looking on other forums some recon these are just lighter patches that have been missed when applying the product, but if I look carefully and closely there are definite yellow blades of grass.

If you look at the included pictures, you may say that the yellow patches follow distinct lines but I think this is emphasised by the mowing yesterday, with a mower that has a roller. I have tried to take a few close ups of the yellow patches for comparison.

My question really is to the experts, would you say that I have missed these patches or have I over applied the product or the included herbicide had an adverse affect in the grass.

Either way, any recommendations on a resolution would be appreciated. I thought if it were missed patches, perhaps I could apply a plain lawn fertiliser after a 6 - 8 week period as to avoid any over feeding. If it had been over fed then obviously not applying anything further is probably the way to go with perhaps over watering the yellow patches.

I thought maybe do a patch test, select two smaller patches, apply product to one and then just water the other one while observing the lawn on the whole.

I have had to resize the images for this forum and can only seem to add three, so here is a link to some high resolution versions: -

https://sdrv.ms/17V8zld

Any thought would be greatly appreciated.

Kind regards

Geoff

[Dillbert]

lemme classic guess.... drop spread?
looks like:
https://www.scotts.com/smg/goprod/scotts ... d10590016/

set to 50% of the recommended; overlap on parallel applies or rotate 90' for a second pass.

[icedgoblin]

Thanks for the reply Dillbert

The method of application was using the container with build in spreader nozzle, I am not sure if you are familiar with the specified product but I have included a picture with the said applicator.

I assume you are suggesting uneven application, in your opinion is this over or under applied? I understand you suggestion of the Scott's spreader but would you recommend applying additional feed, an if so more of the same or an alternative product. If so, I apoed the Evergreen 4 in 1 about 4 weeks ago, would it be ok to feed again in say 2 weeks?

Regards

Geoff

[Dillbert]

the pix shows a classic example of "stripes" - neither under nor over feeding per se, but moreso as you mention - "uneven" feeding" - basically the light green areas were at the edges of the "fan" from the feeder - and didn't get the "recommended" pounds/sqft or kg/sqm - case as may be...

actually, I'm amazed you did such a consistent job with that build in 'spreader nozzle' - as the pellets (?) come out they fall in a cone shape - it appears your row-to-row spacing was just a smidgen wider than they anticipated.

over fertilizing grass is not good - makes it grow way too fast & tender at the expense of setting a good root system.

how to fix: wait the appropriate time interval - then on next application, work at 90 degrees to prior pattern (left-right-left as shown in the pix)


I would be tempted to oscillate the fan spreader bit left-right as it is spread to minimize the light coverage on the edges....