Prices farmers get for raw products fell last month.

August marked the sixth consecutive monthly decline and reduced the index to its lowest mark in almost seven years, the Agriculture Department reported. Last month’s drop also put the index 15% below the year-earlier level. Officials also said that preliminary figures for July, which were announced a month ago, were revised to show a sharper price decline than initially reported, down 1.6% from June instead of 0.8%.