(Based on Economic Review of South African Agriculture 2024/2025)
PART 1 — What Economics Is Actually About
Before studying agriculture, we must first understand the core economic problem.
1. The Economic Problem: Scarcity
The world faces a fundamental problem:
Unlimited human wants > Limited resources
Because resources are limited, societies must decide:
• What to produce
• How to produce
• For whom to produce
This situation is known as scarcity.
Types of Resources (Factors of Production)
Resources used to produce goods and services include:
Natural Resources
Resources provided by nature.
Examples:
• Land
• Water
• Soil
• Climate
These are extremely important in agriculture because food production depends heavily on natural
conditions.
Human Resources
Human effort and abilities used in production.
Examples:
• Labour
• Skills
• Knowledge
• Farm management
• Entrepreneurship
Example:
Farm managers deciding how to allocate land and labour.
Manufactured Resources (Capital)
These are man-made goods used to produce other goods.
Examples:
• Tractors
• Irrigation systems
• Machinery
• Farm buildings
• Storage facilities
These increase productivity and allow farms to produce more efficiently.
, Opportunity Cost
Because resources are scarce, every choice involves giving something up.
Definition
Opportunity cost is:
The value of the next best alternative forgone when a decision is made.
Example (Farmer)
A farmer has land and must choose between two crops:
• Plant maize
• Plant avocados
If the farmer chooses maize, the profit from avocados is the opportunity cost.
This concept is central to economic decision-making.
2. Consumer vs Producer Goals
Economic agents have different objectives.
Consumers
Consumers aim to maximize satisfaction (utility).
Utility means the happiness or satisfaction gained from consuming goods and services.
Consumers choose the combination of goods that gives them the highest satisfaction given their
limited income.
Example:
A student has R100 and can buy:
• Pizza + Coke
• Burger + Chips
The student chooses the option that gives the highest satisfaction.
Producers (Farmers)
Producers aim to maximize profit.
Profit formula:
Profit = Revenue − Costs
or
π = TR − TC
Where:
TR = Total Revenue
TC = Total Cost
π = Profit
Total revenue formula:
TR = Price × Quantity
or
TR = P × Q