DDT developed for use as a pesticide.

The term organic farming brought to the public mind in Look to the Land by Lord Walter Northbourne.

DDT available for public use.

Rachel Carson's Silent Spring published by Houghton Mifflin; opposes use of DDT.

EPA officially bans DDT; the International Federation of Organic Agriculture Movements (IFOAM) formed in France by the leader of a French farmers' group.

The first organic certification organizations — California Certified Organic Farmers (CCOF) and Maine Organic Farmers and Gardeners Association (MOFGA) — are founded in the U.S.

Austria becomes the first country to establish organic farming guidelines.

Washington becomes the first U.S. state to establish organic standards and certification.

The National Resources Defense Council (NRDC) releases Alar report to a huge public outcry. Alar is a toxic chemical frequently applied to apples.

The Organic Foods Production Act is passed, paving the way for national regulations and standards for organic agricultural production.

The first National Organic Program (NOP) is released by the USDA. About 275,000 comments were sent by consumers — a record response — on issues like sewage sludge, GMOs, and irradiation.

Codex Alimentarius, a commission run by the UN's World Health Organization and the Food and Agriculture Organization, sanctions international guidelines to cultivate, process, market, and label organic foods.

Certain meat and dairy approved by the USDA for certified organic labeling.

The second proposed NOP is released by the USDA.

U.S. government increases daily recommendation for fruits and vegetables from “strive for five” to 9-13 servings.

Organic food sales rise to $17 billion — 3 percent of all food and beverage sales in U.S.

FDA approves cloned meat and dairy for unlabeled release into the marketplace.

U.S. Farm Bill allocates $78 million for organic agriculture research and education.