Is a Food Revolution Now in Season?

After being largely ignored for years by Washington, advocates of organic and locally grown food have found a receptive ear in the White House, which has vowed to encourage a more nutritious and sustainable food supply.

The most vocal booster so far has been the first lady, Michelle Obama, who has emphasized the need for fresh, unprocessed, locally grown food and, last week, started work on a White House vegetable garden. More surprising, perhaps, are the pronouncements out of the Department of Agriculture, an agency with long and close ties to agribusiness.

In mid-February, Tom Vilsack, the new secretary of agriculture, took a jackhammer to a patch of pavement outside his headquarters to create his own organic “people’s garden.” Two weeks later, the Obama administration named Kathleen Merrigan, an assistant professor at Tufts University and a longtime champion of sustainable agriculture and healthy food, as Mr. Vilsack’s top deputy.