April 22 has marked several turning points that still shape how Americans farm, steward land and water, and think about the nation’s working landscapes. From a dramatic opening of the Great Plains to non-Native settlement, to the birth of Arbor Day’s chief architect, to the very first Earth Day and the modern climate era, the date threads together the enduring tensions—and opportunities—at the heart of U.S. agriculture.

1889: A cannon shot and a land rush that remade the Plains

At high noon on April 22, 1889, a signal cannon fired and tens of thousands of settlers surged into the “Unassigned Lands” of central Oklahoma Territory, staking claims to nearly two million acres under the Homestead Act. By sundown, townsites such as Oklahoma City and Guthrie had sprung from prairie to infrastructure, with tents and hastily framed storefronts defining grids that would become permanent communities. Wheat, cattle, and, later, cotton would follow, laying groundwork for one of the country’s most productive grain regions.

This seismic land transfer was inseparable from federal policy that had already compressed and dispossessed Native nations. Although labeled “Unassigned,” these lands sat within Indian Territory and had been carved from earlier treaty cessions and allotments. The rush accelerated settlement, introduced new property regimes and fencing, and set in motion decades of agricultural expansion—and risk. In subsequent decades, intensive plowing of fragile prairie soils, combined with prolonged drought, created the conditions that culminated in the 1930s Dust Bowl. Today’s conservation tillage, prairie restoration, and shelterbelt plantings are, in part, living responses to the vulnerabilities laid bare by that earlier wave of settlement.

1832: The birth of J. Sterling Morton, a farmer who planted an idea

April 22 is also the birthday of J. Sterling Morton (1832–1902), the Nebraska newspaperman, farmer, and eventual U.S. Secretary of Agriculture whose best-known legacy is Arbor Day. In 1872, Morton championed a statewide tree-planting celebration in largely treeless Nebraska—an effort that reportedly led to the planting of more than a million trees that first year and spread to other states in the decades that followed. His premise was practical as well as poetic: trees as windbreaks to protect crops and soil, as sources of fruit and timber, and as a stabilizing presence on newly broken ground.

As Secretary of Agriculture from 1893 to 1897, Morton pushed for sound data and frugality, strengthening crop reporting and promoting forestry and horticulture. The idea that good information and thoughtful stewardship underpin productive farming—central to his advocacy—remains embedded in today’s extension, conservation, and climate programs.

1970: The first Earth Day elevates farm–environment links

On April 22, 1970, millions of Americans gathered for the first Earth Day, catalyzing a modern environmental movement whose policy ripple effects reached every sector of agriculture. Over the next few years, federal standards and programs reshaped how inputs were regulated and how farms interacted with land and water:

• Pesticides: Congress overhauled pesticide law in 1972, strengthening registration and safety standards and moving primary authority to the newly created Environmental Protection Agency. The EPA’s 1972 ban on DDT marked a turning point in pest control and accelerated integrated pest management and biological control research.
• Air and water: The Clean Air Act (1970) and Clean Water Act (1972) introduced permitting and technology standards that, over time, affected confined animal feeding operations, nutrient management, and dust and emissions from agricultural activities.
• Wildlife and habitat: Subsequent laws, including the Endangered Species Act (1973), required agencies and producers to factor habitat protection into land and input decisions, influencing wetland drainage, riparian buffers, and rangeland management.

Earth Day did not single out agriculture, but it helped tie farm prosperity to clean air, clean water, and biodiversity—an idea that now underlies conservation compliance in farm bills, cost-share for practices like cover cropping and fencing streams, and the growth of markets and labels that reward environmental performance.

2016: A climate milestone with on-farm implications

On April 22, 2016—Earth Day’s 46th anniversary—the United States joined scores of other nations in signing the Paris Agreement at the United Nations. While climate diplomacy can feel distant from daily chores, its downstream effects are increasingly tangible in farm country: more public and private investment in soil health, methane reduction from livestock and manure, nitrous oxide cuts through precision nitrogen management, and interest in measuring and monetizing soil carbon.

Producers face growing weather volatility and market signals to reduce emissions intensity. The Paris signing, aligned with Earth Day’s ethos, helped normalize agriculture’s role in climate solutions, from agroforestry and prairie strips to anaerobic digesters and improved rice water management.

Why these anniversaries still matter

Together, these April 22 milestones trace a throughline: how America acquires and uses land; how farmers balance productivity with stewardship; and how public expectations, expressed in movements and laws, shape the business of growing food, fiber, and fuel. They also illuminate unresolved challenges:

• Land and access: The land rush era seeded both opportunity and inequity. Today, high land prices, consolidation, and historically rooted disparities continue to influence who farms and where. Efforts to expand access—for beginning, veteran, and historically underserved producers, including Native producers—are part of writing a different chapter.
• Resilience: From Dust Bowl lessons to modern droughts and floods, the case for soil and water conservation is perennial. Practices such as no-till, cover crops, shelterbelts, rotational grazing, and diversified rotations hedge weather risk and can improve margins over time.
• Regulation and innovation: The first Earth Day ushered in rules that made agriculture cleaner and safer. Today’s frontier pairs guardrails with innovation—biologicals, precision tools, improved genetics, and data systems—to produce more with fewer externalities.
• Climate opportunity: Signing Paris on Earth Day underscored agriculture’s dual role as a sector exposed to climate risk and a source of solutions. Programs and markets that pay for measurable outcomes are expanding; the challenge is making them practical, profitable, and fair across farm sizes and systems.

April 22 is more than a date on the calendar; it’s a mirror. It reflects where U.S. agriculture has been—its ambition, its costs, its capacity to adapt—and where it is heading as producers, communities, and policymakers try to keep land both working and well for the long haul.