Concept:
• Extensive commercial grain farming is a highly mechanised type of commercial agriculture practised in the temperate grasslands of the world.
• The main objective of this farming is the large-scale production of cereal crops, especially wheat.
• It is carried out on vast farms with modern agricultural technology and very little human labour.
• This type of farming is mainly practised in regions having low population density and extensive level plains.
• Important regions include the Prairies of North America, Pampas of Argentina, Steppes of Eurasia, Velds of South Africa and Downs of Australia.
Step 1: Understand the nature of extensive commercial grain farming.
Extensive commercial grain farming is a specialised agricultural system where cereal crops are grown on very large farms for commercial purposes.
The produce is mainly sold in national and international markets rather than being consumed by the farming family.
This farming system requires large investments in machinery and modern technology to obtain high productivity.
Step 2: Explain the first characteristic.
1. Large-scale mechanised farming
Farms are very large in size, often extending over hundreds or even thousands of hectares.
Modern agricultural machinery such as tractors, seed drills, combine harvesters and threshers are extensively used for ploughing, sowing, harvesting and processing.
Because of mechanisation, only a small number of workers are required despite the enormous size of farms.
Step 3: Explain the second characteristic.
2. Specialisation in cereal crop production
The principal crop grown is wheat, although other cereals such as maize, barley and oats are also cultivated depending on climatic conditions.
Most farms specialise in one or two major cereal crops to maximise production and profits.
The harvested grains are stored in modern silos and transported efficiently through railways and ports for domestic consumption and export.
Step 4: Explain the third characteristic.
3. Practised in temperate grasslands with low population density
This farming system is mainly found in the temperate grassland regions where land is abundant and population density is low.
The level topography, fertile soils and moderate climate favour the cultivation of cereal crops.
Examples include the Prairies (North America), Pampas (Argentina), Steppes (Eurasia), Velds (South Africa) and Downs (Australia).
Step 5: Write the final answer.
Answer:
The main characteristics of extensive commercial grain farming are:
• It is practised on very large farms using modern machinery such as tractors and combine harvesters, requiring comparatively less human labour.
• It mainly produces cereal crops, especially wheat, on a commercial scale for national and international markets.
• It is practised in the temperate grasslands of the world where fertile plains, low population density and favourable climatic conditions support large-scale mechanised farming.