Dr. Daisy K. Van Hooser, 70, a program assistant with the Agriculture Stabilization and Conservation Service of the U.S. Department of Agriculture, died of cancer June 16 at her home in Rockville.

Dr. Van Hooser was born in East Greenwich, R.I. She graduated from the University of Rhode Island, where she also earned a master's degree in agriculture. She earned three additional bachelor's degrees, including one at Providence College in Rhode Island. She earned a doctorate in psychology from Brantridge College in England.

Dr. Van Hooser moved to the Washington area in 1953. She was employed by a banking firm before she joined the Montgomery County government in the mid-1950s. She went to work for the Agriculture Department in 1967.

She left federal service in 1973 and returned in 1977. At the time of her death, she was responsible for administering Agriculture's conservation and milk diversion program in Montgomery County.

Dr. Van Hooser was a member of the Potomac Grange, and she had assisted in the reorganization of other granges in Montgomery County. She was a member of the Order of the Eastern Star and the American Association of University Professors.

Survivors include her husband, Dr. Forrest Van Hooser of Rockville, and a sister, Violet Kettelle of East Greenwich.