The number of applications required to kill Bermuda, usually depends on how long the Bermuda has been in the yard. The more established it is, the more rhizomes are underneath, and rhizomes are incredible survivors ! You can keep the more desirable Bermuda, and kill the taller growing ones, by wicking Roundup on the leaves . If its a large area. Round up sells a wick device to brush across the area......if its a smaller lawn, put some Round up solution in a dish, and rub the taller growing leaves with your fingers, making sure you don't drip any on the shorter growing bermuda below.

You can also plug hybrid Bermuda into the area, which further crowds out undesirable off types.

Thank you dchall. Never knew that there are bermuda imposters. Here are some of the pictures, it's been raining all day and may not be the best picture but here is what I could get today.

If you can see the light patch in center (strain2) and darker patch on top (strain1) and again darker patch in bottom (strain3).

top section: Strain1: Grows horizontally well.

Middle light patch: strain2: small leaves light color.

Bottom portion: strain3: darker larger leaves but grows veritically and thin.

Tom, the bermuda is there for 3 years now. I have a plugger tool as well, so plugging can also be done. I was going towards sprigs so it can cover quickly.

Yep. Looks like a total kill might be best. A quicker way to get a total kill- is by soil fumigation. Google it for your area- as I think it needs to be done by a contractor now days

Thanks for the idea Tom. I am trying keep all this under budget, not sure how much it would cost to fumigate but I will check to see how much it would cost for 1500 sq feet. I was also wondering if I start the first round of round-up before the grass goes dormant and continue if it whenever something greens up till May when I can sprig.

Also one thing I missed was, originally I was thinking these shade difference is due to soil nutrition or ph but later I noticed that the grass leaves were very different, so I was thinking these to be 3 strains. I could be wrong here. In summer when I fertilized they all looked on same shade for a couple days and then they are back to light and dark.

Any green tissue at all in the Bermuda- is enough to get at least some kill. …..When the remaining Bermuda makes a come back in the spring, fertilize it heavily to get a nice lush leaf going. Round up works best when the plant is healthy. A week after you spray, ( both now and in the spring) mow short and make a second spray on the exposed runners. Bermuda runners have green tissue also , which absorb Round up and take more chemical into the rhizomes.

Thank you, the temperature is good this week, will start to spray in a couple days.