Washington ? The Senate approved a measure Thursday that would combine a $12 billion buyout for tobacco growers with authority for the government for the first time to regulate the ingredients of all tobacco products, including nicotine levels.

The buyout portion of the legislation would end a Depression-era quota and price support system for tobacco growers, which even tobacco farmers complain inflates their costs and makes it impossible for them to compete with foreign-grown tobacco.

Hundreds of tobacco growers would receive more than $1 million, according to the Environmental Working Group, a watchdog organization. Growers could continue to plant and harvest tobacco, but without the quota system and price support system.

The Food and Drug Administration would gain broad powers to regulate the manufacture, distribution, sale and advertising of all tobacco products, including cigarettes, cigars, pipe tobacco and chewing tobacco. The bill would require that the health warnings on tobacco products be more prominent, covering at least 30 percent of each cigarette pack. It would restrict tobacco marketing, particularly in youth-oriented magazines.

The two-part measure was adopted, 78-15, as an amendment to a wide-ranging corporate tax bill, which passed the Senate two months ago. The House also has attached a $9.6 billion tobacco buyout — without additional FDA regulation — to the corporate tax measure. Before the bill can go to the White House, a single compromise version will have to be reached.