Question 1 Report
(a) In a tabular form, list ten differences between subsistence agriculture and commercial agriculture. [10marks]
(b) State one advantage and one disadvantage of the following sources of farm power:
(i) wind;
(ii) internal combustion engine;
(iii) electricity. [6 marks]
(a) Ten differences between subsistence and commercial agriculture
| Subsistence agriculture | Commercial agriculture |
|---|---|
| Produces mainly to feed the farmer's family | Produces mainly for sale and profit |
| Farm size (holding) is small | Farm size is large |
| Uses simple, local tools such as hoe and cutlass | Uses machines such as tractors and harvesters |
| Requires little capital | Requires large capital |
| Uses family labour | Uses hired/skilled labour |
| Output/yield is low | Output/yield is high |
| Many crops are grown together (mixed cropping) | Usually one crop is grown on large scale (monocropping) |
| Little or no use of improved inputs | Uses improved seeds, fertilisers and agro-chemicals |
| Low level of technology and management | High level of technology and scientific management |
| Little or no surplus for storage/processing | Large surplus for storage, processing and export |
(b) Sources of farm power
| Source | One advantage | One disadvantage |
|---|---|---|
| (i) Wind | It is free, renewable and does not pollute the environment | It is unreliable because it does not blow steadily at all times |
| (ii) Internal combustion engine | It is powerful and can do heavy work quickly | It is costly to buy, fuel and maintain and it pollutes the air |
| (iii) Electricity | It is clean, convenient and easy to control | Supply is often not available in rural areas and can be interrupted |
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