WASHINGTON — Senators have a bipartisan deal to require labeling of genetically modified ingredients nationally, a week before a labeling law in Vermont goes into effect.

The deal announced Thursday would require labeling of genetically modified organisms, or GMOs, in packaged foods nationwide. But it would be more lenient than Vermont’s law, allowing food companies to use a text label, a symbol or electronic label accessed by smart phone. Vermont’s law would require items to be labeled “Produced with genetic engineering.”

The agreement couldn’t become law before Vermont’s law kicks in July 1, since the House is on vacation until July 5. Legislation passed by the House would make the labeling voluntary, but that measure stalled in the Senate last year.

Since then, Democratic Sen. Debbie Stabenow of Michigan and Republican Sen. Pat Roberts of Kansas have worked to find a compromise, saying a national solution is needed.

The food industry has lobbied to block Vermont’s law, arguing that GMOs are safe and the labels could be costly for agriculture, food companies and consumers.

The industry’s main lobbying group, the Grocery Manufacturers Association, said it is backing the senators’ deal. The group has opposed mandatory labeling nationwide, but advocated for electronic labels in negotiations.