Agricultural Economics
Agricultural Economics
This domain tests cost concepts, farm income measures, benefit–cost analysis, demand and supply, elasticity and agricultural marketing.
Core rules
- Fixed costs do not vary with output in the short run; variable costs change with input use.
- Gross income is total receipts; net income is gross income minus total costs.
- Benefit–cost ratio = gross income ÷ total cost. A ratio above 1 indicates a return above cost.
- Price elasticity of demand measures the responsiveness of quantity demanded to price; demand for staple food is generally inelastic.
- Marketing channels move produce from producer to consumer; the price spread is the difference between producer and consumer prices.
Worked example
A farmer earns ₹1,20,000 gross income. Variable costs are ₹50,000 and fixed costs are ₹30,000. Total cost = ₹80,000. Net income = ₹1,20,000 − ₹80,000 = ₹40,000. Benefit–cost ratio = 1,20,000 ÷ 80,000 = 1.5. The reasoning is to add fixed and variable costs for total cost, then compare gross income with that total.
Mark-losing traps
- Reporting gross income as profit.
- Ignoring fixed costs when the question asks for total cost and net income.
- Treating a benefit–cost ratio below 1 as profitable.
- Confusing price elasticity with income elasticity.