The correct option is 1, 2 and 3 only
Explanation
Intensive Subsistence Agriculture is a type of farming practiced in densely populated regions of monsoon Asia. It is primarily categorized into two types based on the availability of water and climatic conditions:
1.
Intensive subsistence agriculture dominated by wet paddy cultivation.
2.
Intensive subsistence agriculture dominated by crops other than paddy.
The question pertains to the second category, which adapts to regions where rice cultivation is not feasible due to climatic constraints.
Statement-wise Analysis
- Statement 1 is Correct: This form of agriculture is dominant in areas where rainfall is insufficient for paddy cultivation. These are typically dry, semi-arid, or sub-humid regions, such as the western Indo-Gangetic plains in India and the dry loess plains of north-western China.
- Statement 2 is Correct: Since these regions receive lower rainfall compared to rice-growing areas, water scarcity is a limiting factor. Consequently, the agricultural system relies heavily on irrigation facilities to sustain crop growth and ensure productivity.
- Statement 3 is Correct: The cropping pattern is adapted to the climatic conditions. Major crops include wheat, soybean, barley, and sorghum. In India, wheat is the dominant crop in the north-western plains, while millets are cultivated in the drier parts of western and southern India.
- Statement 4 is Incorrect: Intensive subsistence agriculture is characterized by a high density of population and small landholdings. It is traditionally labour-intensive, relying significantly on family labour rather than machinery. The description of "highly mechanized agriculture requiring very little human labour" applies to Extensive Commercial Grain Farming (practiced in the Prairies, Steppes, etc.), not subsistence farming.
Key Takeaway
Intensive Subsistence Agriculture (Non-Paddy) is an adaptation to drier climates within densely populated regions. It is distinguished from commercial farming by its high labour intensity, small landholdings, and reliance on irrigation for crops like wheat and millets.