Bowie Race Course closes its successfull fall meeting today, showing increases of 10.9 percent in attendance and 22.2 percent in wagering.

The Prince George's track's final feature, the $30,000-added Kindergarten Stakes, finds only five contestants entered in the six-furlong event.

Probable favorite for this 30th running of the Kindergarten will be Double Gate Lady, a 2-year-old filly who has finished first in all three of her lifetime starts. She was disqualified from first place after winning her debut. Since then, the bay has won two races by a total of 16 lengths. She will be ridden by Rodrigo Hernandez and will carry 115 pounds.

Chief contention is expected to come from Lady Jove, a filly who has been running in top male company. She will be ridden by Ken Black.

Completing the field are Tricki Vicki, Jean Marie and Foolette.

Laurel fans will find a novel slow-motion camera in operation when that track opens its 60-day meeting on Monday.

The new slow-motion videotape recorder will allow the showing of any race in slow motion from any angle. In the past, there was only a 30-second time period in which the slow-motion function could be used and the old device could be used only on certain angles. The old slow-motion system also made blurred pictures.

The new device can rerun any race forward or backward, from any angle and with broadcast quality. The final sixteenth of a mile of every race at Laurel will be shown in slow motion as well as the entire running of any race in which there is a claim of foul.

Other features at Laurel will be an entirely new racing strip which was rebuilt from top to bottom. The track surface now includes a great deal more sand than in the past, a feature is intended to avoid accumulation of large amounts of water.

There also is a new turf course for this year's 29th running of the $200,000 Washington, D.C. International on Nov. 8. Laurel will seek permission from the Maryland Racing Commission to add $50,000 to the International purse when that body meets in Baltimore on Tuesday. Laurel also will argue that its summer dates should not be taken away because of lack of air conditioning. Laurel maintains that rebuilding its racing strip demanded top priority and that losing its summer dates would force a hardship upon it.

Another feature at Laurel will be the "early-bird" betting, whereby a customer can come to the track and make a wager hours before the actual running of the races which begin at 12:30 p.m.