Class 8 Geography Chapter 3 Notes PDF on Agriculture - Download for FREE
FAQs on Agriculture Class 8 Notes: CBSE Geography Chapter 3
1. What is agriculture as explained in Class 8 Geography Chapter 3?
According to the revision notes for Class 8, Chapter 3, agriculture is the science and primary economic activity dealing with the cultivation of plants and rearing of livestock. It is crucial for producing food, fodder, and other valuable resources for human use and economic stability, supporting over half of the world's population.
2. What are the two main types of farming to quickly revise?
The two principal types of farming outlined in the chapter are:
- Subsistence Farming: This is practised on a small scale, primarily to meet the needs of the farmer's family, using low levels of technology and household labour.
- Commercial Farming: This involves large-scale cultivation of crops and rearing of animals with the primary goal of selling the produce in the market for profit, often using modern machinery and significant capital.
3. Can you summarise the key features of subsistence farming?
Subsistence farming is characterised by its small-scale operations. Its main goal is self-consumption by the farmer's family. It typically involves low levels of technology and capital, relying heavily on family labour. The main forms include Intensive Subsistence Farming, where a small plot is farmed intensively, and Primitive Subsistence Farming, which includes methods like shifting cultivation and nomadic herding.
4. What are the essential inputs and operations in a farm system?
A farm system requires several key components to function, as per the 2025-26 CBSE syllabus. The main inputs include seeds, fertilisers, machinery, land, and labour. The essential operations or processes that transform these inputs into outputs are ploughing, sowing, irrigation, weeding, and harvesting.
5. Which major crops are highlighted in these revision notes, and what is one key requirement for each?
The notes cover several major world crops, including:
- Rice: Requires high temperature, high humidity, and high rainfall.
- Wheat: Needs moderate temperature and rainfall during growing season but bright sunshine at harvest.
- Maize (Corn): Requires moderate temperature, rainfall, and lots of sunshine.
- Cotton: Needs high temperature, light rainfall, and 210 frost-free days.
- Jute: Grows well in an alluvial soil with high temperature and heavy rainfall.
- Coffee: Requires a warm and wet climate and well-drained loamy soil on hill slopes.
- Tea: Needs a cool climate and well-distributed high rainfall throughout the year.
6. How do subsistence and commercial farming fundamentally differ in their purpose and methods?
The fundamental difference lies in their objective and scale. Subsistence farming aims to produce enough for the farmer's family, using traditional methods and small plots of land. In contrast, commercial farming is profit-oriented, focused on producing a large surplus to sell in the market. This requires large land holdings, high capital investment, and advanced technology like tractors and combined harvesters.
7. Why is shifting cultivation often considered an unsustainable agricultural practice?
Shifting cultivation is considered unsustainable for several key reasons. Firstly, it leads to deforestation as forests are cleared and burned. Secondly, it causes significant soil erosion once the land is abandoned, which can lead to desertification. This practice also destroys natural watersheds and harms local biodiversity, making it an uneconomical and environmentally damaging method in the long run.
8. What is the core idea behind 'agricultural development' and how does it contrast between India and the USA?
The core idea of agricultural development is to increase farm production to meet the growing global demand for food. The approach, however, varies greatly. In a developing nation like India, development often focuses on small farms, using basic mechanisation like tractors and tubewells. In a developed country like the USA, agriculture operates like a large business. Farmers manage vast farms (e.g., 250-300 hectares), use satellite imagery, conduct soil testing, and rely on automated machinery, showcasing a highly scientific and capital-intensive approach.
9. How do different commercial farming types, like mixed farming and plantations, serve distinct economic purposes?
Different types of commercial farming are specialised for different market needs. Mixed farming, where land is used for growing food crops and rearing livestock simultaneously, diversifies a farmer's income and reduces risk. In contrast, plantations focus on cultivating a single cash crop like tea, coffee, or rubber on a very large scale. This specialisation is aimed at mass production for export and processing in nearby factories, catering to a global supply chain.
10. Why are specific climate and soil types so critical for growing major crops like rice and cotton?
Specific climate and soil are critical because each crop has unique biological needs for optimal growth. For instance, rice is a water-intensive crop that thrives in the high temperature and humidity of tropical regions, and its roots need to be submerged in water, making water-retentive alluvial clayey soil ideal. On the other hand, cotton requires a long, frost-free growing period with bright sunshine and moderate rainfall, and it grows best in well-drained black and alluvial soils. Planting them in the wrong conditions would lead to poor yield or crop failure.











