NASHVILLE, Tenn. (AP) _ Merle Haggard has canceled his August tour dates after contracting pneumonia, his booking agent said.

Haggard, 62, is under doctor's orders to rest for two to three weeks, Bobby Roberts said Wednesday. Haggard was at his home in Palo Cedro, Calif., and was taking antibiotics.

``He's exhausted,'' Roberts said. ``He's been touring nonstop and recording three albums whenever he gets a break.''

Haggard's hits include ``I Take a Lot of Pride in What I Am'' and ``Okie From Muskogee.''