Stewards at Garden State Park in Cherry Hill, N.J., have suspended jockey Armando Marquez six months for grabbing the reins of another rider's horse in Monday's eighth race.

Marquez, 22, had the lead astride long shot Flying Daisy deep in the stretch before former Maryland jockey Julie Krone rallied 6-to-5 favorite Explodom on the inside.

Explodom was about to overtake Flying Daisy when Marquez grabbed Explodom's right rein with his left hand and yanked the mare's head to the right.

Explodom retained her balance but lost her momentum, losing to Flying Daisy by a head. However, following an objection by Krone and a stewards' inquiry, Flying Daisy was disqualified to second place and Explodom pronounced the winner.

The stewards discussed the incident with Marquez and Krone before Tuesday night's races, then suspended Marquez for the violation of two rules: willfully jostling another horse and willfully touching the equipment of another horse with intent to interfere.

During his suspension, which extends through Sept. 2, Marquez will be permitted to exercise horses during training hours. It was not known yesterday whether Marquez intends to appeal the ruling.

Krone, who is based in New York, went to Garden State Monday to ride only two horses; her other mount, Able Fat S., finished third in the feature race for $75,000 claimers. Krone, who last year set records for victories and earnings by a female jockey, ranks sixth in wins at Aqueduct.