Getting Started
Why are some farms vast, single-crop operations while others are small, diverse plots? The answer lies in economics. The fundamental purpose of a farm—whether to feed a family or to sell for profit—and the cost of the land it occupies are powerful forces that shape agricultural practices and create distinct production regions across the globe.
What You Should Be able to Do
Explain how the goals of subsistence and commercial agriculture create different types of farming regions.
Compare the land use, inputs, and location of intensive and extensive farming practices.
Use the bid-rent theory to explain how land costs influence the spatial arrangement of agricultural activities around a market.
Analyze how monocropping reflects the economic goals of commercial agriculture.
Key Developments & Analysis
Pattern: The Economic Landscape of Agriculture
A bird's-eye view of the world's agricultural land reveals clear spatial patterns driven by economic logic.
Intensive farming practices, which require high inputs of labor and capital on smaller plots of land, tend to cluster near high-population centers and markets.
Extensive farming practices, which use fewer inputs over large areas of land, are typically found in more remote regions with lower land values and population densities.
Regions dominated by commercial agriculture often feature vast, uniform landscapes of a single crop, a practice known as monoculture.
Regions characterized by subsistence agriculture tend to display a more varied mosaic of smaller, diverse fields, as farmers plant multiple crops for their own consumption.
Process: How Economic Forces Shape the Farm
The patterns we observe are not random; they are the result of rational economic decisions made by farmers in response to two key factors: market orientation and land cost.
Market Orientation: Subsistence vs. Commercial
The primary division in agricultural production is based on purpose.
Subsistence Agriculture is a system where farmers grow food primarily to feed themselves and their families. There is little to no surplus to sell. This economic goal leads to practices that minimize risk, such as planting a variety of crops (polyculture).
Commercial Agriculture is a system where farmers grow crops and raise livestock primarily for sale in a marketplace. The goal is to maximize profit. This encourages specialization and efficiency, often leading to monocropping (planting the same crop year after year) or monoculture (raising a single specialty crop on a large scale). By focusing on one product, commercial farms can achieve economies of scale, lowering production costs and increasing output.
Land Cost: The Bid-Rent Theory
Land is a key input for any farm, and its cost varies dramatically based on location. The bid-rent theory is a model that explains how land value and land use are related. It states that land closer to a central market is more expensive due to its better access, which lowers transportation costs. Farmers compete, or "bid," for this land.
Because land near the market is expensive, farmers must use it intensively to generate enough revenue to cover their costs and make a profit. For example, high-value crops like vegetables or dairy products, which also need to get to market quickly, can justify the high land cost. This is intensive farming.
Farther from the market, land is less expensive. This allows for extensive farming practices that require large areas, such as grain farming or cattle ranching. The revenue per acre is lower, but this is viable because the land cost is also low.
Impacts: The Resulting Agricultural Regions
These economic processes create a predictable spatial organization of agriculture.
Immediate Spatial Outcomes: The bid-rent theory predicts a pattern of concentric rings of different agricultural activities surrounding a central market. The most intensive and high-value farming occurs in the inner rings, while the most extensive and lower-value farming occurs in the outer rings.
Longer-Term Spatial Reorganization: As market forces expand, commercial agriculture can replace traditional subsistence farming. This transforms the landscape from small, diverse plots into large, uniform regions dedicated to monoculture, fundamentally reorganizing the rural economy and environment.
Data & Organization Tools
Comparing Agricultural Practices
| Characteristic | Intensive Farming | Extensive Farming |
|---|---|---|
| Primary Economic Driver | High land cost near market | Low land cost far from market |
| Inputs (Labor/Capital) | High per unit of land | Low per unit of land |
| Land Area | Smaller farms, higher yields per acre | Larger farms, lower yields per acre |
| Typical Location | Close to markets (urban fringe) | Far from markets (rural interior) |
| Associated Practice | Commercial (e.g., market gardening) | Commercial (e.g., ranching) or Subsistence |
Evidence Bank
Bid-Rent Theory: A geographic model showing how the price and demand for land change as the distance from a central market increases, influencing the type of agriculture practiced.
Subsistence Agriculture: Farming in which the food produced is primarily consumed by the farmer's family, not sold for profit.
Commercial Agriculture: The production of crops and livestock for sale in a market, driven by the goal of generating profit.
Monocropping: The agricultural practice of growing a single crop year after year on the same land, common in commercial farming.
Monoculture: The cultivation of a single crop in a given area, creating a specialized agricultural landscape.
Intensive Farming: An agricultural system characterized by high inputs of capital and/or labor per unit of land area.
Extensive Farming: An agricultural system characterized by low inputs of capital and/or labor per unit of land area.
Land Cost: A key economic factor that varies with location and influences a farmer's decision on what to produce and how to produce it.
Skill Snapshots
Pattern–Process
Pattern: Dairy farms and market gardens are often located just outside major cities. ↔ Process: According to bid-rent theory, these intensive operations can afford the high land costs because their products have high market values and require proximity to consumers.
Pattern: The U.S. Midwest is dominated by enormous fields of corn or soybeans. ↔ Process: The profit motive of commercial agriculture encourages specialization (monoculture) to achieve economies of scale and maximize efficiency.
Pattern: Cattle ranching is common in remote, arid regions of the American West. ↔ Process: Low land costs in areas far from markets make extensive practices like ranching, which require vast amounts of land, economically viable.
Regional Contrasts
A small subsistence farm in a developing country may grow a dozen different crops on two acres, while a commercial farm in a developed country may grow only wheat on two thousand acres.
On the urban fringe, land is used intensively for high-value organic vegetables, while in the distant interior, the same amount of land might be used extensively to graze a small number of livestock.
The economic logic of a subsistence farmer is to ensure food security for the family, while the logic of a commercial farmer is to maximize financial return from the land.
Common Misconceptions & Clarifications
"Intensive" does not mean "better." It refers strictly to the level of inputs (labor, capital) per unit of land. A massive extensive wheat farm can produce far more total grain than a small intensive vegetable garden.
"Subsistence" farming is not "primitive." It often involves highly complex and sustainable systems of intercropping and environmental management developed over centuries.
Bid-rent theory is a model, not reality. It simplifies the world by assuming a flat, featureless plain with a single central market. In reality, transportation networks, multiple markets, and physical geography complicate the pattern, but the underlying economic principle remains valid.
Commercial agriculture is not always large-scale. A small farm that sells all its produce at a local farmers' market is just as much a commercial farm as a multinational corporation. The defining feature is production for sale, not farm size.
One-Paragraph Summary
Agricultural production regions are fundamentally shaped by economic forces. The primary distinction between subsistence farming (for family consumption) and commercial farming (for profit) dictates land use decisions and creates vastly different landscapes. Commercial agriculture often leads to large-scale monoculture to maximize efficiency. Furthermore, the cost of land, as explained by the bid-rent theory, organizes agriculture spatially. High land costs near markets necessitate intensive farming with high inputs on small plots, while low land costs farther away allow for extensive farming on vast tracts of land. Together, these economic principles explain why we see specific types of agriculture in specific places.