Arthur M. Cummings, 85, a retired marketing executive at the Department of Agriculture who worked here for more than 20 years, died of an internal hemorrhage Thursday at Doctor's Hospital of Prince George's County.

Mr. Cummings was born in Claflin, Kan. In 1920 he began farming there, and in 1936 was awarded the title of master farmer by the state. Two years later, he joined the crop insurance division of the Department of Agriculture in Kansas City, Mo.

He moved to Washington in 1941, where he was head of the grain storage division at Agriculture. In 1953, Mr. Cummings was made chief of marketing in the grain and feed department of the Foreign Agriculture Service. He retired in 1965.

Mr. Cummings was made an honorary alumnus of Kansas State University in 1960.

He was a member of St. Pius Catholic Church in Bowie and St. Bernadette's Catholic Church in Silver Spring. He was active in the Bowie Senior Citizen's group and had lived in Bowie since 1975.

His wife, the former Marie McGowan, died in 1974.

Survivors include a son, Charles M. Sr. of Bowie; a daughter, Margaret C. Elliot of Reno, Nev., a brother, Daniel C., of Albuquerque, N.M., nine grandchildren and three great-grandchildren.