Bermuda Getting Brown, Especially on Tips

amoncurAugust 19, 2014

Hi,

I have bermuda grass and live in Arizona...hot summers. Am currently watering 20 min per day (starting at 11pm) 3 days per week. I've noticed the past couple of weeks that when I cut my lawn the tips of many of the blades are brown, and other stalks are brown (see images below). What is this indicative of? Just that I might need to water more? Or add some weed and feed?

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amoncur

And here is one more image for you all to look at....

    Bookmark   August 19, 2014 at 2:26PM
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neilaz(9a)

Dull blade?

    Bookmark   August 19, 2014 at 5:50PM
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amoncur

It's a relatively new mower....maybe 5 or 6 months? Was brand new when I bought it.....just a Home Depot mower, though....nothing fancy.

    Bookmark   August 19, 2014 at 6:41PM
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dchall_san_antonio(8 San Antonio)

Just for a point of reference, you should be watering deeply, once every 5-7 days in Phoenix. Only go to every 5 days when the temps are consistently in the 100s (most of the summer). Deeply means a full inch of water (as measured by several cat food or tuna cans placed around the yard).

Are you following the Bermuda Bible for your fertilizer schedule?

    Bookmark   August 19, 2014 at 6:56PM
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amoncur

I will have to try the cat dish test to see what deeply is for my sprinklers. Sounds like I'm watering too frequently?

I am not familiar with the Bermuda Bible. I will look for it

    Bookmark   August 23, 2014 at 1:08PM
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dchall_san_antonio(8 San Antonio)

Cat food can, not cat dish - not a bowl.

You might have to wean your lawn down to the infrequent timing. I know a couple people in Pho who have good success with watering once every 5 days when in the 100s and every 7 days when in the 90s.

    Bookmark   August 23, 2014 at 1:19PM
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amoncur

Thanks for the tips! I've read the Bermuda Bible and did the cat food test. Turns out my 20 minute cycle was only depositing ~1/3", so I will have to increase the cycle time to ~1 hour every 5 days instead of 20 minutes 3 times per week. Same amount of water being used, but this I assume will allow for much deeper watering than what I have been doing to date.

Regarding the Bermuda Bible, it mentions the use of Nitrogen (NPK) and fertilizer products. My question is this: is the nitrogen product the same thing as the fertilizer product? Or are they two separate products that both need to be applied? Is this a "Scotts" type product I can pick up at Home Depot?

    Bookmark   August 24, 2014 at 2:20PM
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dchall_san_antonio(8 San Antonio)

The Bermuda Bible uses nitrogen and fertilizer interchangeably. I don't think Scott's has the products you're looking for. He talks about very high N values. Usually you get those at a farm and ranch store.

You're right about the water. Deeper is better because the soil temp is lower down deeper. Lower temp means less evaporation. Your 1 inch of water will actually last longer when applied more deeply.

    Bookmark   August 24, 2014 at 5:23PM
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