Agricultural Economics
Agricultural Economics
This domain tests production costs, returns, farm budgeting, marketing and price relationships. Numerical questions usually require separating fixed and variable costs and calculating net income or benefit-cost ratio.
Core rules
- Fixed costs do not change with output in the short run, such as land rent and depreciation on buildings. Variable costs change with the enterprise, such as seed, fertilizer and hired labour.
- Gross income = yield x price. Total cost = fixed cost + variable cost. Net income = gross income - total cost. Benefit-cost ratio = gross income / total cost.
- Gross margin = gross income - variable cost. It is useful for comparing enterprises when fixed costs are common.
- Break-even yield = total cost / price per unit. Price elasticity of demand measures responsiveness of quantity demanded to price.
Worked example
One hectare of wheat has variable cost Rs 30,000 and fixed cost Rs 10,000. Yield is 40 quintals and price is Rs 2,000/quintal. Gross income = 40 x 2,000 = Rs 80,000. Total cost = Rs 40,000. Net income = Rs 40,000. B:C ratio = 80,000/40,000 = 2.0. Break-even yield = 40,000/2,000 = 20 quintals. The reasoning shows that profit begins only after covering both cost types.
Traps
Do not call gross income profit. Fixed costs still matter in net income even though they are excluded from gross margin. B:C ratio is not a percentage profit margin. Check whether yield is in quintals or tonnes before multiplying by price. Family labour may have an opportunity cost.