David,
I did not get to ask the huy I talked to about why he used Perennial versus Rye. I may try and contact him again. From what I have read there are 2 reasons for using the perennial:
1. Better wear tolerance
2. Perennial doesn't grow as fast
Like I said we will try it on a couple of small fields.
I am worried about the competition in the late Spring with the Bermuda.
He told me that last year the rye did not die out until June.
I am hoping the overseeding will give us 2 beenefits:
1. Protection of the Bermuda in the early Spring from heay wear during early spring (March-early May) play times when the Bermuda is fairly dormant.
2. The Rye grass will crowd out some of the normal spring growing weeds.
I have found a little of my info. on the overseeding on this web site:
http://www.sportsgrass.com/
I really can't vouch for the accuracy...