Consequences of Agricultural Practices

By the end of this lesson, students will be able to (per CED LO IMP-5.A):

• Explain consequences of agricultural practices (per LO IMP-5.A).
• Describe environmental effects of agriculture including pollution, land-cover change, desertification, soil salinization, and conservation efforts (per EK IMP-5.A.1).
• Identify societal effects including changing diets, the role of women in agricultural production, and the shift from family farms to agribusiness (per EK IMP-5.A.2).
• Explain opportunities created by changes in food production and consumption, including organic farming, value-added specialty crops, fair trade, and local-food movements (per EK IMP-5.A.3).
• Explain the spatial relationships between different agricultural practices and their consequences at multiple scales (per Skill 2.E).

Per CED LO IMP-5.A, this lesson asks students to "explain consequences of agricultural practices." The CED then breaks those consequences into three EKs: environmental (IMP-5.A.1), societal (IMP-5.A.2), and opportunity/response (IMP-5.A.3). All three are testable. This lesson is organized around them directly.

Why consequences matter

Agriculture uses roughly half of Earth's habitable land and 70 percent of global freshwater withdrawals. Its footprint is enormous. It is also the main driver of deforestation worldwide, a major source of nitrogen pollution, and responsible for around 10-12 percent of global greenhouse gas emissions (agricultural activity directly; higher when land-use change is included). These are the scale facts behind the EKs.

Opportunities, not just costs

Per EK IMP-5.A.3, "changes in food production and consumption present opportunities for future economic and cultural changes." This is an important framing. The CED does not treat agricultural change as purely destructive. Organic farming, fair trade, farm-to-table, community-supported agriculture, and local-food movements are all opportunities named or implied in the standard.

The CED names five environmental effects explicitly. Each is directly testable.

Per EK IMP-5.A.2, agricultural practices have societal effects including changing diets, the role of women in agricultural production, and the shift from family farms to agribusiness. All three are explicit CED content.

Changing diets

As countries develop, diets shift toward more animal protein, processed foods, and imported fruits/vegetables. This nutrition transition strains both global resources (more meat = more grain, land, and water per calorie) and public health (rising obesity and diabetes in middle-income countries). China's per-capita meat consumption grew from ~15kg/year in 1980 to ~65kg/year today.

The role of women in agricultural production

The CED names women's role explicitly. Globally, women do about 40-60 percent of agricultural labor but own a much smaller share of farmland and have less access to credit, extension services, and tools. In sub-Saharan Africa, women are often the primary producers of subsistence food crops. Lesson 5.12 (Women in Agriculture) develops this further; here, it is one of three named societal consequences.

The shift from family farms to agribusiness

The CED's final named societal effect is the shift from family farms to agribusiness. In the US, the number of farms fell from around 6 million in 1930 to ~2 million in 2026, while average farm size more than tripled. Corporate agribusiness (Cargill, Tyson, JBS, Nestlé) now controls large shares of grain trading, meat processing, and food manufacturing. The family-farm model survives but with reduced share.

Per EK IMP-5.A.3, "changes in food production and consumption present opportunities for future economic and cultural changes." Four opportunities dominate the modern landscape.

Four cases, one for each major CED theme (land-cover change, desertification/salinization, agribusiness shift, opportunity response).

Brazil · Land-Cover Change

~18% of Amazon deforested; soy/cattle driven

Brazil is the canonical case of land-cover change. Roughly 18 percent of the original Amazon rainforest has been cleared, primarily for cattle pasture and soybean production for export. The 2023-24 period showed partial recovery as Brazilian enforcement strengthened, but the underlying pressure remains.

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Uzbekistan · Salinization & Aral Sea

Aral Sea ~90% shrunk by 2020s

Soviet-era cotton irrigation diverted the Amu Darya and Syr Darya rivers, shrinking the Aral Sea to roughly 10 percent of its 1960 size. Irrigated cropland across Uzbekistan has suffered severe salinization; dust storms blow salt across the region. The clearest modern demonstration of EK IMP-5.A.1 salinization.

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United States · Shift to Agribusiness

Farms: ~6M (1930) → ~2M (2026); avg 464 acres

The US shows EK IMP-5.A.2's agribusiness shift at national scale. The number of farms fell from around 6 million in 1930 to around 2 million by 2026; average farm size more than tripled. Four firms (Cargill, JBS, Tyson, National Beef) control around 85 percent of US beef processing. The family farm persists but controls a diminishing share of output.

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Italy · Opportunity Response

~2.2M ha certified organic; #1 EU organic area

Italy leads the EU in certified organic farmland. The "slow food" movement began in Italy in 1986 as a response to industrial agriculture; the country combines organic production, Protected Designations of Origin (PDO), and farm-to-table agritourism as explicit EK IMP-5.A.3 opportunities. It is what post-agribusiness response can look like.

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1. Of the five environmental effects named in EK IMP-5.A.1 (pollution, land-cover change, desertification, salinization, conservation), which do you think is hardest to reverse? Defend.
2. EK IMP-5.A.2 names the shift from family farms to agribusiness as a consequence. Is it a loss, a gain, or both? Use specific data from a named country.
3. EK IMP-5.A.2 names women's role in agricultural production as a consequence. Why does the CED treat it as a "consequence of agricultural practice" rather than a separate topic? (Preview of Lesson 5.12.)
4. Per EK IMP-5.A.3, changes in food production present opportunities. Organic food costs more per calorie than conventional food. Is that a feature (premium reflecting quality/sustainability) or a bug (limiting access)?
5. Apply Skill 2.E: compare spatial patterns of salinization (concentrated in irrigated dry regions) and deforestation (concentrated in humid tropics). What explains the different geographies?

Draft alignment — pending educator review. AP HG codes correspond to the official College Board Course and Exam Description (Effective Fall 2020, V.1). Statements below are paraphrased in CountryReports' own voice; refer to the College Board's published CED for verbatim wording.

AP® and Advanced Placement® are registered trademarks of the College Board. The College Board was not involved in the production of this material and does not endorse it. Standards statements above are paraphrased; codes refer back to the official College Board CED, the NCSS C3 Framework, the Common Core State Standards, and other cited frameworks.