Sustainable Agriculture: NBSE Class 12 Environment

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Get summaries, questions, answers, solutions, notes, extras, PDF and guides for Chapter 11 Sustainable Agriculture: NBSE Class 12 Environment (Environmental Education) textbook, which is part of the syllabus of students studying under the Nagaland Board. These solutions, however, should only be treated as references and can be modified/changed.

Summary

The Green Revolution was an effort to grow more food using better seeds, fertilisers, irrigation and farming methods. It happened mostly in developing countries like India, Mexico, Pakistan and the Philippines between the 1960s and 1980s. The aim was to stop hunger by growing more crops like wheat and rice.

In the early 20th century, rich countries had already started using science to improve farming. They used better seeds and chemicals, which increased food production. But poor countries didn’t make the same progress. By the 1960s, many people in Asia were hungry. India had suffered from droughts and food shortages. The US government said the world needed a big effort to solve the food problem. As a result, the Rockfeller and Ford Foundations helped start global research on improving crops.

New seeds for rice and wheat were made using breeding methods. These included semi-dwarf varieties that grew shorter but produced more grain. These seeds needed fertilisers and water to grow well. The term “Green Revolution” was first used in 1968 to describe this success. Scientists like Norman Borlaug and Dr M.S. Swaminathan helped develop and spread these seeds. Swaminathan introduced the Mexican dwarf wheat to India. This was part of a new farming plan.

Before 1967, India tried to grow more food by farming more land. But this was not enough. The Green Revolution changed things by using three ideas: more farmland, two crops a year instead of one, and better seeds. Double cropping needed more water, so big dams were built. New seeds like the K68 wheat variety were also created in India.

The Green Revolution had both good and bad effects. In places like Punjab, wheat and rice production increased. But crops like pulses and oilseeds dropped. Growing the same crops again and again harmed the soil. Farmers used more fertilisers, but over time the soil lacked other nutrients. Pests and diseases increased. Too much water led to waterlogging and salt in the soil, which made land infertile.

Across Asia and Latin America, cereal production doubled. Food became cheaper, and many people avoided hunger. But in Africa, the changes were less successful. Some areas didn’t benefit because of poor roads, high costs and little support.

The Green Revolution helped many people but also caused damage to the environment. The soil, water, and native crops suffered. Poor farmers didn’t always gain as much as rich ones.

Textbook solutions

Short Answer Questions

1. Define sustainable agriculture.

Answer: Sustainable agriculture can be defined as any type of farming practice that helps protect the environment by conserving water and energy and by limiting the use of synthetic pesticides and fertilisers. Its practices stress on the long-term conservation of resources and are designed to balance the human need for food with concerns for the environment. Sustainable agriculture integrates three main goals – environmental health, economic profitability and social and economic equity.

2. What is meant by organic farming?

Answer: Organic farming is meant as the growing of crops without the use of synthetic chemicals.

3. What are the advantages of monoculture farming?

Answer: Monoculture farming has its advantages in terms of efficiency and ease of management.

4. Mention any two advantages of sustainable agriculture.

Answer: Two advantages of sustainable agriculture are that it addresses many environmental and social concerns, and it also offers innovative and economically viable opportunities for growers, labourers, consumers, policy makers and many others in the entire food system

Long Answer Questions

1. What is meant by sustainable agriculture? Why is it needed in today’s time?

Answer: Sustainable agriculture can be defined as any type of farming practice that helps protect the environment by conserving water and energy and by limiting the use of synthetic pesticides and fertilisers. Its practices stress on the long-term conservation of resources and are designed to balance the human need for food with concerns for the environment. Sustainable agriculture integrates three main goals: environmental health, economic profitability, and social and economic equity.

The need for sustainable agriculture arises because agriculture has changed dramatically, especially since the end of World War II. While food and fibre productivity soared due to new technologies, mechanisation, increased chemical use, specialisation, and government policies that favoured maximising production, these changes have also had significant costs. Prominent among these costs are topsoil depletion, groundwater contamination, the decline of family farms, continued neglect of the living and working conditions of farm labourers, increasing costs of production, and the disintegration of economic and social conditions in rural communities. A growing movement has emerged during the past two decades to question the role of the agricultural establishment in promoting practices that contribute to these social problems. Today, this movement for sustainable agriculture is gaining increasing support and acceptance within mainstream agriculture. Not only does sustainable agriculture address many environmental and social concerns, but it also offers innovative and economically viable opportunities for growers, labourers, consumers, policy makers, and many others in the entire food system.

2. What are the obstacles and threats to sustainable agriculture?

Answer: Despite the potential for a more sustainable agriculture, in which farmers, rural communities, the environment, and national economies could all benefit, there are still many obstacles and threats. Some of them are as follows:

• Many existing power structures are threatened by change, and it may not be possible for all to benefit in the short-term. These threats occur from international to local levels.
• At the international level, markets and trade policies have been tending to depress commodity prices, thereby reducing returns to farmers and economies. In the past ten years alone, commodity prices have fallen on an average by 50 per cent. Agrochemical companies, too, will be seeking to protect their markets against options that imply reduced use of their products.
• At the national level, macro-economic and micro-economic policies that still hinder the development of a more sustainable agriculture have to be targeted and changed.
• In some cases, this will be politically very difficult, particularly when it comes to implementing promised land reforms, which would give farmers the security to invest in sustainable practices.
• The bureaucratic nature of large institutions is a further threat. They face difficulties in trying to work in a way that empowers local communities, as this implies giving up some power.
• The conservative nature of universities and teaching institutions is an obstacle to the needs of a new professionalism for sustainable agriculture. Most are unwilling or simply unable to train agricultural professionals capable of working with and for farmers.
• Finally, farmers themselves face transition costs in the process of adopting sustainable agriculture practices and technologies, and learning new management and learning skills.

3. Write a note on practices of sustainable agriculture.

Answer: Sustainable production practices involve a variety of approaches. Specific strategies must take into account topography, soil characteristics, climate, pests, local availability of inputs, and the individual grower’s goals. Despite the site-specific and individual nature of sustainable agriculture, several general principles can be applied to help growers select appropriate practices. These management practices include:

• Selection of species and varieties that are well suited to the site and to conditions on the farm. If preventive strategies are adopted early, then there would be a reduction in disputes, and it will aid in establishing a sustainable production system. When possible, pest-resistant crops should be selected which are tolerant of existing soil or site conditions. When site selection is an option, factors such as soil type and depth, previous crop history, and location should be taken into account before planting.
• Diversification of crops (including livestock) and cultural practices to enhance the biological and economic stability of the farm. It is seen that diversified farms are usually more economical and ecologically resilient. While monoculture farming has its advantages in terms of efficiency and ease of management, the loss of the crop in any one year could put a farm out of business and/or seriously disrupt the stability of the community dependent on that crop. By growing a variety of crops, farmers spread economic risk and are less susceptible to radical price fluctuations associated with changes in supply and demand. Crop rotation can be used to remove weeds, pathogens, and insect pests. Cover crops can have stabilising effects on the agroecosystem by holding soil and nutrients in place, conserving soil moisture with mowed or standing dead mulches, and by increasing water infiltration rate and soil water holding capacity. Optimum diversity may be obtained by integrating both crops and livestock in the same farming operation.
• Management of the soil to enhance and protect soil quality. A healthy soil is a key component of sustainability; that is, a healthy soil will produce healthy crop plants that have optimum vigour and are less susceptible to pests. In a sustainable system, the soil is viewed as a fragile and living medium that must be protected and nurtured to ensure its long-term productivity and stability. Methods to protect and enhance the productivity of the soil include using cover crops, compost and/or manures, reducing tillage, avoiding traffic on wet soils, and maintaining soil cover with plants and/or mulches.
• Efficient and human use of inputs. Many inputs and practices used by conventional farmers are also used in sustainable agriculture. Sustainable farmers, however, maximise reliance on natural, renewable, and on-farm inputs. The goal is to develop efficient biological systems which do not need high levels of material inputs. Sustainable approaches are those that are the least toxic and least energy-intensive and yet maintain productivity and profitability.
• Consideration of farmer’s goals and life-style choices. Management decisions should reflect not only environmental and broad social considerations but also individual goals and life-style choices. For example, the adoption of some technologies or practices that promise profitability may also require such intensive management that one’s lifestyle actually deteriorates. Management decisions that promote sustainability nourish the environment, the community, and the individual.

4. Discuss the impact of sustainable agriculture.

Answer: Despite the fast improvements in food production, the most difficult challenges are just beginning in the case of sustainable agriculture. During the past half a century, agricultural development policies have been remarkably successful at emphasising external inputs as the means to increase food production. This has produced remarkable growth in global consumption of pesticides, inorganic fertiliser, tractors, and other machines. These external inputs have, however, replaced natural control processes and resources, rendering them more vulnerable.

Pesticides have replaced biological, cultural, and mechanical methods for controlling pests, weeds, and diseases; farmers have substituted inorganic fertilisers for livestock manures, compost, and nitrogen-fixing crops. Information for management decisions now often comes from input suppliers and researchers rather than from local sources, and fossil fuels have replaced locally generated energy sources. The specialisation of agricultural production and the associated decline of the mixed farm has also contributed to this situation, where what were once valued as internal resources have often become waste products.

The basic challenge and, consequently, the impact of sustainable agriculture differ in various agricultural areas.

• In the industrialised agriculture of Europe and North America, the impact is to reduce substantially input use and variable costs in order to maintain profitability. Some fall in yields would be acceptable given current levels of overproduction.
• In the Green Revolution areas, the challenge and impact involve maintaining yields at current levels while reducing environmental damage.
• In the diverse and complex lands, the impact is to increase yields per hectare while not damaging natural resources.

New evidence from farms and communities worldwide shows that sustainable agriculture can be achieved in all these regions.

• In the diverse, complex, and resource-poor lands of the Third World, farmers adopting regenerative technologies have seen impacts such as doubled or trebled crop yields, often with little or no use of external inputs.
• In the high-input and generally irrigated lands, farmers adopting regenerative technologies have maintained yields whilst substantially reducing inputs, which is a significant impact.
• In the industrialised agricultural system, a transition to sustainable agriculture could mean an impact of a fall in per-hectare yield of 10-20% in the short-term, but with the positive impact of better level of financial returns to farmers.

5. What is known about sustainable agriculture in India?

Answer: It is known that sustainable agriculture in India is considered organic farming on a large scale. In India, the Government has been providing green agriculture for a long time, and the Central Government is promoting the production and use of biofertilisers to make green agriculture popular. For this purpose, the Government has initiated a National Project on Development and Use of Biofertilisers. The main objectives of this project are the production and distribution of biofertilisers, developing standards for different biofertilisers and quality control, releasing grants for setting up biofertiliser units, training, and publicity.

Several factors facilitate the greening of Indian agriculture, that is, organic agriculture in India. These include a growing export market for organically produced crops and a price premium for organically produced systems of 10% to 100%. Diverse agroclimate regions across the country provide an environment for a wide range of crops that can meet different market demands. There is increasing awareness and health consciousness, especially among certain sectors of domestic consumers, and availability of comparatively cheap labour for labour-intensive organic agriculture. Furthermore, large numbers of small farmers who do the traditional farming, with very limited capacity to pay for most of the chemical inputs into agriculture, the presence of NGOs as active promoters of organic farming in different agroclimatic regions, increasing involvement of private companies in the field of agricultural extension, trade concentration and other services, and enhanced government attention and support for organic agriculture through various policy initiation and action programmes also contribute.

Though there are positive signs for green agriculture in India, it is not growing at a pace to motivate a larger section of the farming community to opt for organic agriculture. The demand for green agricultural products is a stimulant for the growth of the input market. In other words, if there is demand in the market for organically produced farm products, this will encourage farmers to implement organic farming practices and also to use organic inputs like biofertilisers, bio-pesticides, vermi-compost, green manure, and Farm Yard Manure (FYM).

Some of the major organically produced agricultural crops in India include crops like plantation, spices, pulses, fruits, vegetables, and oilseeds, etc. Main products produced in India by organic farming include commodities such as Tea, Coffee, Rice, and Wheat. Spices include Cardamom, Black pepper, White pepper, Ginger, Turmeric, Vanilla, Tamarind, Clove, Cinnamon, Nutmeg, Mace, and Chillies. Pulses are Red gram and Black gram. Fruits encompass Mango, Banana, Pineapple, Passion fruit, Sugarcane, Orange, Cashew nut, and Walnut. Vegetables include Okra, Brinjal, Garlic, Onion, Tomato, and Potato. Oil seeds are Mustard, Sesame, Castor, and Sunflower. Other products include Cotton and Herbal extracts. India is best known as an exporter of organic tea and also has great export potential for many other products. Other organic products for which India has a niche market are spices and fruits.

Think and Answer

Q. How are organic farming and sustainable agriculture partners in providing us safe and clean food and environment scenario in the future?

Answer: Organic farming and sustainable agriculture are deeply interconnected partners, working together to create a future with safe, clean food and a healthy environment. Their partnership stems from shared principles and complementary actions.

Sustainable agriculture is understood to be similar to organic farming—which involves the growth of crops without synthetic chemicals—but often operates on a larger scale. Both approaches strive to establish a long-term, harmonious relationship with the environment by limiting the harmful effects associated with more conventional farming methods.

In our quest for safe and clean food, organic farming plays a direct role by ensuring crops are grown without synthetic chemicals, thus reducing consumer exposure to residues from synthetic pesticides and fertilisers. Sustainable agriculture partners in this by championing practices that limit the use of these synthetic inputs. It is fundamentally designed to balance the human need for food with genuine concerns for environmental well-being, leading to healthier food choices.

For a cleaner environment, their partnership is equally vital. Sustainable agriculture is defined as any farming practice that helps protect the environment through methods like conserving water and energy and, crucially, by limiting synthetic pesticides and fertilisers. A primary goal integrated into sustainable agriculture is fostering “environmental health.” Organic farming directly supports this by eliminating synthetic chemical use, thereby preventing issues such as groundwater contamination and reducing the overall chemical load on ecosystems. Sustainable approaches are inherently “least toxic and least energy intensive,” and management decisions within this framework aim to “nourish the environment.”

Thus, organic farming and sustainable agriculture are partners because organic farming provides a clear, effective set of practices—especially the avoidance of synthetic chemicals—that directly contributes to the broader goals of sustainable agriculture. Sustainable agriculture offers the comprehensive vision for environmental health and food safety, and organic farming is a key practical component that helps turn this vision into reality. Together, they offer a robust pathway to a future where our food production systems are both productive and truly safe for people and the planet.

Project Work & Activity

(a) Organic farming has become popular all over the world and organic products are put on sales counter. But organic produce buyers are very few in numbers. Use Internet, newspapers and magazines as sources to find out about why organic products are not sold? What is the reaction of critics towards the organic product?

Answer: Do it yourself. Here are the instructions:

• Understand the Task: Your goal is to find out two things:
  • Why more people are not buying organic food, even if it’s available.
  • What are some criticisms or negative opinions about organic food.
• Where to Look: Use the internet (like Google search), and look for articles in online newspapers or magazines.
• How to Search Online:
  • For reasons why organic products aren’t sold, try searching for phrases like:
    • “Why people don’t buy organic food”
    • “Challenges for organic food sales”
    • “Problems with selling organic products”
  • For criticisms, try searching for phrases like:
    • “Criticism of organic food”
    • “Arguments against organic farming”
    • “Is organic food really better”
• What to Look For (Reasons for low sales):
  • Cost: Is organic food more expensive? If so, why?
  • Availability: Can you find organic food easily in all shops?
  • Awareness: Do people know enough about what “organic” means or its benefits?
  • Trust: Do people believe that the food labelled “organic” is genuinely organic?
  • Appearance: Does organic food sometimes look different (e.g., smaller, not as shiny) and does that affect choices?
• What to Look For (Criticisms):
  • Do critics say it’s too expensive for the benefits it offers?
  • Do some people think organic farming cannot produce enough food for everyone?
  • Are there doubts about whether organic food is much healthier or safer than regular food?
  • Are there concerns about “organic” just being a marketing trick?
• Collect and Note Down:
  • Read a few different articles or sources.
  • Write down the main reasons you find for low sales.
  • List the common criticisms you come across. Try to get 2-3 points for each.

(b) Find out about organic farms in India and the organic products which are sold in India.

Answer: Do it yourself. Here are the instructions:

• Understand the Task: Your goal is to learn about:
  • Organic farms in India (e.g., where they are, what kind of support they get).
  • What organic products are grown and sold in India.
• Where to Look: Again, use the internet. You can also look for information from government agriculture websites if you find them.
• How to Search Online:
  • Try searching for phrases like:
    • “Organic farming in India”
    • “Organic products grown in India”
    • “List of organic foods India”
    • “States in India known for organic farming”
    • “Government schemes for organic farming India”
• What to Look For (Organic Farms in India):
  • Which states in India are doing a lot of organic farming?
  • Are there government projects or support for organic farmers in India? (Hint: Look for things like “National Project on Development and Use of Biofertilisers”).
  • Are these farms mostly small or large?
• What to Look For (Organic Products in India):
  • Make a list of organic products available. You might find things like:
    • Tea, coffee, rice, wheat
    • Spices (like turmeric, pepper, cardamom)
    • Pulses (like different kinds of dal)
    • Fruits (like mangoes, bananas)
    • Vegetables
    • Oilseeds (like mustard, sesame)
    • Cotton, herbal items
  • Find out if these products are mainly sold within India or also exported to other countries. (Hint: India is known for exporting some organic items like tea, spices, and fruits).
• Collect and Note Down:
  • Make a list of the organic products you find that are produced in India.
  • Write down a few key facts about organic farming in India (e.g., important states, types of products, any government help).

Extras

Additional Questions and Answers

1. What is an agroecosystem?

Answer: An agroecosystem is described as all the organisms, abiotic factors and interactions among them that occur on land used for agriculture and adjacent areas.

2. Name two techniques of sustainable agriculture.

Answer: Two techniques of sustainable agriculture are:

(i) Crop rotation
(ii) Integrated pest management.

3. Name two methods used to protect and enhance soil productivity.

Answer: Two methods used to protect and enhance the productivity of the soil are:

(i) Using cover crops and compost and/or manures
(ii) Reducing tillage.

4. What is one objective of the National Project on Development and Use of Biofertilisers in India?

Answer: One objective of the National Project on Development and Use of Biofertilisers in India is the production and distribution of biofertilisers.

5. Name two factors that facilitate organic agriculture in India.

Answer: Two factors that facilitate organic agriculture in India are:

(i) A growing export market for organically produced crops
(ii) A price premium for an organically produced system, which can range from 10% to 100%.

6. What are the three main goals of sustainable agriculture?

Answer: Sustainable agriculture integrates three main goals:

(i) Environmental health
(ii) Economic profitability
(iii) Social and economic equity.

7. List any two prominent costs associated with conventional agriculture since World War II.

Answer: Two prominent costs associated with conventional agriculture since World War II are:

(i) Topsoil depletion
(ii) Groundwater contamination.

8. What practice works to reduce pest control costs with high-yielding crop varieties?

Answer: Crop rotation is a practice that works to reduce pest control costs with today’s high-yielding varieties of crops just as well as with yesterday’s lower-yielding varieties.

9. What factors should be considered when selecting a site for sustainable agriculture?

Answer: When site selection is an option for sustainable agriculture, factors that should be taken into account before planting are:

(i) Soil type and depth
(ii) Previous crop history
(iii) Location.

10. Why is crop diversification beneficial in sustainable agriculture?

Answer: Crop diversification is beneficial in sustainable agriculture because diversified farms are usually more economical and ecologically resilient. By growing a variety of crops, farmers spread economic risk and are less susceptible to radical price fluctuations associated with changes in supply and demand.

11. Explain how sustainable agriculture differs from conventional industrial agriculture.

Answer: Conventional industrial agriculture, particularly since the end of World War II, has dramatically changed, with food and fibre productivity soaring due to new technologies, mechanisation, increased chemical use, specialisation, and government policies that favoured maximising production. However, these changes have incurred significant costs, including topsoil depletion, groundwater contamination, the decline of family farms, continued neglect of farm labourers’ living and working conditions, increasing production costs, and the disintegration of economic and social conditions in rural communities.

In contrast, sustainable agriculture is defined as any type of farming practice that helps protect the environment by conserving water and energy and by limiting the use of synthetic pesticides and fertilisers. Its practices stress the long-term conservation of resources and are designed to balance the human need for food with concerns for the environment. Sustainable agriculture integrates three main goals: environmental health, economic profitability, and social and economic equity. It is similar to organic farming, which involves the growth of crops without the use of synthetic chemicals, but it is on a larger scale. Like organic farming, sustainable agriculture tries to establish a long-term relationship with the environment by limiting the harmful effects of more conventional farming methods. Converting to sustainable practices does not mean simple input substitution; frequently, it substitutes management and scientific knowledge for conventional inputs, especially chemical inputs that harm the environment on farms and in rural communities. The goal is to develop efficient biological systems which do not need high levels of material inputs. Conventional agriculture has seen pesticides replace biological, cultural, and mechanical methods for controlling pests, weeds, and diseases, and farmers have substituted inorganic fertilisers for livestock manures, compost, and nitrogen-fixing crops. Furthermore, in conventional systems, information for management decisions often comes from input suppliers and researchers rather than from local sources, and fossil fuels have replaced locally generated energy sources, contributing to the specialisation of agricultural production and the decline of mixed farms where internal resources often become waste products.

12. Describe how integrated pest management, crop rotation and no-tillage farming contribute to long-term resource conservation.

Answer: Integrated pest management, crop rotation, and no-tillage farming are techniques of sustainable agriculture that contribute to long-term resource conservation.

Integrated pest management is a resource-conserving technology. Making agriculture sustainable involves approaching pest control in a completely different way, using high quality soil, crop rotations, and beneficial insects, thereby reducing reliance on synthetic chemical inputs and conserving resources.

Crop rotation contributes to resource conservation as it can be used to remove weeds, pathogens, and insect pests. This practice works to reduce pest control costs with today’s high yielding varieties of crops just as well as with yesterday’s lower yielding varieties. By managing pests naturally, it reduces the need for chemical interventions, thus conserving resources.

No-tillage farming, which often involves methods like using cover crops and reducing tillage, helps to protect and enhance the productivity of the soil. Cover crops can have stabilising effects on the agroecosystem by holding soil and nutrients in place, conserving soil moisture with mowed or standing dead mulches, and by increasing water infiltration rate and soil water holding capacity. Maintaining soil cover with plants and/or mulches and reducing tillage are key methods for ensuring the soil’s long-term productivity and stability, which are fundamental to resource conservation.

13. Outline the key factors that have enabled farmers in resource-poor lands to increase crop yields using regenerative technologies.

Answer: In the diverse complex and resource poor lands of the Third World, farmers adopting regenerative technologies have doubled or trebled crop yields, often with little or no use of external inputs. The key factors, or common elements, that have enabled these successes are threefold:

(i) These farmers have made use of resource conserving technologies such as integrated pest control, soil and water conservation, nutrient recycling, multiple cropping, water harvesting, waste recycling and so on.
(ii) In all these instances, there has been action by groups and communities at the local level.
(iii) There has been supportive and enabling external government and non-governmental organisations.

14. Discuss the challenges and potential solutions for maintaining profitability in industrialised agriculture while adopting sustainable practices.

Answer: In the industrialised agriculture of Europe and North America, the basic challenge for sustainable agriculture is to reduce substantially input use and variable costs in order to maintain profitability. It is noted that some fall in yields would be acceptable given current levels of overproduction. Furthermore, in the industrialised agricultural system, a transition to sustainable agriculture could mean a fall in per-hectare yield of 10-20% in the short-term, but with a better level of financial returns to farmers. The potential solution, therefore, involves adopting practices that reduce input use and variable costs, which can lead to better financial returns even with a potential slight decrease in yields.

15. Analyse the impact of urban sprawl on the availability of prime farmland and propose measures to address this issue.

Answer: Developments around cities are considered dangerous to agriculture, as urban sprawl continues to take up prime farmland, making it unavailable for agriculture. To address this, policies need to be made to control the growth of cities and to preserve prime farmland for agricultural uses. This is particularly important when the goal is to feed people from local rather than long-distance sources.

16. Evaluate the role of local community action and supportive external organisations in successful sustainable agriculture initiatives.

Answer: Successful sustainable agriculture initiatives have common elements, which include action by groups and communities at the local level. Additionally, there has been supportive and enabling external government and non-governmental organisations. These elements indicate that both local community action and the support from external organisations play a crucial role in achieving sustainable agriculture.

17. Assess the benefits and limitations of using biofertilisers to promote sustainable agriculture in India.

Answer: In India, the government has been promoting the production and use of biofertilisers to make green agriculture popular, initiating a National Project on Development and Use of Biofertilisers. The objectives of this project, which highlight the benefits, include the production and distribution of biofertilisers, developing standards for different biofertilisers and quality control, releasing grants for setting up biofertiliser units, training, and publicity. Organic inputs like biofertilisers are used in organically produced agricultural crops.

While the text details these promotional efforts and implied benefits, it also notes that though there are positive signs for green agriculture in India, it is not growing at a pace to motivate a larger section of the farming community to opt for organic agriculture, which would include the use of biofertilisers. The document does not explicitly detail specific limitations of using biofertilisers themselves, but rather points to a slower-than-desired adoption rate of broader organic and green agricultural practices.

18. Examine the threats posed by current market and trade policies to sustainable agriculture and suggest policy changes to mitigate these threats.

Answer: Current market and trade policies pose significant threats to sustainable agriculture. At the international level, markets and trade policies have been tending to depress commodity prices, thereby reducing returns to farmers and economies. For instance, in the past ten years alone, commodity prices have fallen on an average by 50 per cent. Agrochemical companies also seek to protect their markets against options that imply reduced use of their products, which can hinder sustainable practices. At the national level, macro-economic and micro-economic policies that still hinder the development of a more sustainable agriculture are a threat.

To mitigate these threats, it is suggested that these hindering national-level policies have to be targeted and changed. While specific changes are not detailed, the implication is that policies should be reformed to support, rather than depress, commodity prices and to foster the development of sustainable agriculture.

Additional MCQs (Knowledge Based)

1. After World War II, agricultural productivity soared mainly due to which factor?

A. Mechanisation
B. Population decline
C. Land reduction
D. Decreased chemicals

Answer: A. Mechanisation

2. Which of the following is a prominent environmental cost associated with intensive agriculture?

A. Topsoil enrichment
B. Groundwater contamination
C. Increased biodiversity
D. Rural development

Answer: B. Groundwater contamination

3. Sustainable agriculture aims to limit the use of which of these inputs?

A. Synthetic pesticides
B. Organic manure
C. Rainwater
D. Beneficial insects

Answer: A. Synthetic pesticides

4. Which of the following is a main goal of sustainable agriculture?

A. Economic profitability
B. Urban expansion
C. Industrial growth
D. High chemical use

Answer: A. Economic profitability

5. Both sustainable agriculture and organic farming restrict the use of what?

A. Synthetic chemicals
B. Crop rotation
C. Biological control
D. No-tillage methods

Answer: A. Synthetic chemicals

6. Which of the following is a practice of sustainable agriculture?

A. Crop rotation
B. Slash-and-burn
C. Monocropping
D. Burning residues

Answer: A. Crop rotation

7. Research in which scientific discipline contributes to sustainable agriculture?

A. Entomology
B. Geology
C. Hydrology
D. Astrology

Answer: A. Entomology

8. Sustainable agriculture relies on which specialist to develop weed control methods?

A. Weed ecologist
B. Molecular biologist
C. Entomologist
D. Soil chemist

Answer: A. Weed ecologist

9. To validly compare conventional and sustainable farming systems, evaluations must be conducted over what duration?

A. Long periods
B. One month
C. One season
D. One year

Answer: A. Long periods

10. Which factor should be considered when selecting a crop site?

A. Soil type
B. Previous crop history
C. Location
D. All of these

Answer: D. All of these

11. Growing a variety of crops primarily helps reduce what risk?

A. Economic risk
B. Pest risk
C. Weather risk
D. Labour risk

Answer: A. Economic risk

12. Crop rotation reduces the cost of what?

A. Pest control
B. Fertiliser
C. Irrigation
D. Machinery

Answer: A. Pest control

13. Cover crops do NOT perform which function?

A. Reduce water retention
B. Hold soil in place
C. Conserve moisture
D. Increase infiltration

Answer: A. Reduce water retention

14. Which practice does NOT enhance soil protection?

A. Deep ploughing
B. Cover cropping
C. Compost application
D. Reduced tillage

Answer: A. Deep ploughing

15. Sustainable agriculture maximises reliance on what inputs?

A. Natural inputs
B. Chemical inputs
C. Imported inputs
D. Synthetic inputs

Answer: A. Natural inputs

16. Management decisions should reflect environmental, broad social and whose goals?

A. Individual goals
B. Market trends
C. Policy mandates
D. Technological advances

Answer: A. Individual goals

17. Conventional agriculture replaced biological control processes with what?

A. Pesticides
B. Crop rotation
C. Beneficial insects
D. Compost

Answer: A. Pesticides

18. In industrialised agriculture, sustainability may allow yields to fall by what percentage in the short term?

A. 10–20%
B. 5–10%
C. 20–30%
D. 0%

Answer: A. 10–20%

19. In Green Revolution areas, sustainable agriculture aims to maintain yields while reducing what?

A. Environmental damage
B. Labour costs
C. Market prices
D. Seed quality

Answer: A. Environmental damage

20. In diverse, resource-poor lands, regenerative technologies have increased yields by what factor?

A. Two to three times
B. Halved
C. Unchanged
D. Slight decrease

Answer: A. Two to three times

21. In irrigated, high-input lands, sustainable practices maintained yields while reducing what?

A. Inputs
B. Biodiversity
C. Profits
D. Livestock

Answer: A. Inputs

22. Which of the following is NOT a resource-conserving technology?

A. Monocropping
B. Water harvesting
C. Nutrient recycling
D. Integrated pest control

Answer: A. Monocropping

23. Successful sustainable agriculture involves action at what level?

A. Local level
B. National level
C. International level
D. Corporate level

Answer: A. Local level

24. Alongside local groups, what external support aids sustainable agriculture?

A. Government organisations
B. Retail chains
C. Urban developers
D. Luxury brands

Answer: A. Government organisations

25. In the past ten years, commodity prices have fallen by what average percentage?

A. 50%
B. 10%
C. 75%
D. 25%

Answer: A. 50%

26. Which industry is threatened by reduced chemical use in agriculture?

A. Agrochemical companies
B. Textile manufacturers
C. Insurance firms
D. Automobile makers

Answer: A. Agrochemical companies

27. Which educational institutions are cited as conservative obstacles to sustainable agriculture?

A. Universities
B. NGOs
C. Private companies
D. Retailers

Answer: A. Universities

28. Which group faces transition costs when adopting sustainable practices?

A. Farmers
B. Consumers
C. Retailers
D. Tourists

Answer: A. Farmers

29. Which is an objective of the National Project on Biofertilisers in India?

A. Production and distribution
B. Pesticide development
C. Machinery import
D. Genetic engineering

Answer: A. Production and distribution

30. What price premium do organically produced crops fetch in India?

A. 10–100%
B. 0%
C. 200%
D. 5–10%

Answer: A. 10–100%

31. India is best known as an exporter of which organic product?

A. Tea
B. Cotton
C. Rice
D. Soybean

Answer: A. Tea

32. What term describes all organisms, abiotic factors and their interactions on agricultural land?

A. Agroecosystem
B. Biome
C. Habitat
D. Landscape

Answer: A. Agroecosystem

33. Demand for green agricultural products stimulates growth of which market?

A. Input market
B. Land market
C. Labour market
D. Commodity market

Answer: A. Input market

34. Organic farming is defined as the growing of crops without what?

A. Synthetic chemicals
B. Crop rotation
C. Labour
D. Water

Answer: A. Synthetic chemicals

35. Sustainable agriculture stresses long-term conservation of resources and balances food needs with concerns for what?

A. Environment
B. Technology
C. Industry
D. Finance

Answer: A. Environment

36. Which of these is NOT listed as a technique of sustainable agriculture?

A. Slash-and-burn
B. No-tillage farming
C. Integrated pest management
D. Crop rotation

Answer: A. Slash-and-burn

37. Which commodity is produced organically in India?

A. Pulses
B. Steel
C. Cement
D. Automobiles

Answer: A. Pulses

38. Which of these is classified under “others” in India’s organic production?

A. Rice
B. Meat
C. Dairy
D. Fish

Answer: A. Rice

Additional MCQs (Competency Based)

1. Which of the following are considered primary goals of a farming approach that aims for long-term viability and ecological balance?

I. Maximising short-term crop yields through any means necessary.
II. Ensuring the health and preservation of the environment.
III. Achieving economic profitability for agricultural producers.
IV. Promoting social and economic equity within the food system.

(a) I, II, III
(b) I, III, IV
(c) II, III, IV
(d) I, II, IV

Answer: (c) II, III, IV

2. Assertion (A): Agricultural practices adopted widely after World War II, while increasing productivity, also led to significant environmental and social costs.
Reason (R): These practices often involved intensified chemical use, large-scale mechanisation, and government policies focused on maximising production, sometimes overlooking long-term ecological and community impacts.

(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R does not explain A.
(c) A is true but R is false.
(d) A is false but R is true.

Answer: (a) Both A and R are true and R is the correct explanation of A.

3. Match the agricultural practice with its primary benefit in systems aiming for ecological sustainability:

Column A (Practice)	Column B (Primary Benefit)
(i) Crop Rotation	1. Reduces soil erosion and conserves moisture by minimising soil disturbance.
(ii) No-tillage farming	2. Minimises reliance on synthetic pesticides by using ecological interactions.
(iii) Integrated Pest Management	3. Improves soil health and helps control specific pests and weeds naturally over time.
(iv) Use of cover crops	4. Holds soil and nutrients in place, conserves moisture, and can add organic matter.

(a) (i)–3, (ii)–1, (iii)–2, (iv)–4
(b) (i)–1, (ii)–3, (iii)–4, (iv)–2
(c) (i)–2, (ii)–4, (iii)–1, (iv)–3
(d) (i)–4, (ii)–2, (iii)–3, (iv)–1

Answer: (a) (i)–3, (ii)–1, (iii)–2, (iv)–4

4. A statement notes: “A growing movement has emerged during the past two decades to question the role of the agricultural establishment in promoting practices that contribute to these social problems.”
Based on this, what can be inferred about the timeline of the movement advocating for more ecologically sound agriculture?

(a) It began as a dominant force immediately after World War II.
(b) It is a very recent development, primarily within the last five years.
(c) It gained significant momentum approximately twenty years prior to when this observation was made.
(d) It has always been an integral and accepted part of mainstream agricultural policy.

Answer: (c) It gained significant momentum approximately twenty years prior to when this observation was made.

5. Why is an agricultural approach that emphasizes ecological balance and resource conservation considered scientific?
I. It relies exclusively on farming methods passed down through many generations without modern adaptation.
II. It utilizes detailed knowledge of the complex interactions between crops, pests, beneficial organisms, and their environment.
III. It incorporates findings and principles from scientific disciplines such as entomology, soil science, and agronomy.
IV. Its primary focus is on reducing chemical inputs, irrespective of impacts on yield or economic viability.

(a) Only I
(b) Only II and III
(c) Only IV
(d) I, II, III, and IV

Answer: (b) Only II and III

6. Assertion (A): Farming systems that prioritize ecological balance share similarities with organic farming, particularly in their aim to reduce reliance on synthetic chemicals.
Reason (R): Organic farming universally guarantees higher crop yields than any conventional farming method.

(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R does not explain A.
(c) A is true but R is false.
(d) A is false but R is true.

Answer: (c) A is true but R is false.

7. Which of the following are identified as significant negative consequences stemming from the widespread changes in agricultural practices since the mid-20th century?
I. Depletion of topsoil.
II. A consistent increase in the biodiversity within farm ecosystems.
III. Contamination of groundwater resources.
IV. A universal strengthening and increase in the number of small family farms.
V. The decline of many family-operated farms.

(a) I, II, IV
(b) I, III, V
(c) II, IV, V
(d) I, IV, V

Answer: (b) I, III, V

8. Match the primary challenge or goal for achieving long-term agricultural viability with the corresponding agricultural region type:

Column A (Region Type)	Column B (Challenge/Goal)
(i) Industrialised agriculture (e.g., Europe, North America)	1. Maintain current yield levels while significantly reducing environmental damage.
(ii) Green Revolution areas	2. Increase yields per unit of land without causing damage to natural resources.
(iii) Diverse and complex lands (e.g., parts of the Third World)	3. Substantially reduce the use of external inputs and variable costs to ensure continued profitability.

(a) (i)–1, (ii)–2, (iii)–3
(b) (i)–2, (ii)–3, (iii)–1
(c) (i)–1, (ii)–3, (iii)–2
(d) (i)–3, (ii)–1, (iii)–2

Answer: (d) (i)–3, (ii)–1, (iii)–2

9. An observation states: “In the past ten years alone, commodity prices have fallen on an average by 50 per cent.”
What is a likely consequence of this economic trend for farmers, particularly in the context of adopting more resource-conserving agricultural methods?

(a) A guaranteed increase in profitability for all farmers, encouraging investment.
(b) Reduced financial returns, potentially making it more challenging to invest in new or alternative practices.
(c) A widespread shift towards more expensive, high-input farming methods to compensate for low prices.
(d) Increased financial support from agrochemical companies to offset losses.

Answer: (b) Reduced financial returns, potentially making it more challenging to invest in new or alternative practices.

10. Which of the following are reasons why farms cultivating a variety of crops and/or livestock are often considered more ecologically and economically resilient than those practicing monoculture?
I. Monoculture farms are inherently simpler and therefore less prone to any form of risk.
II. The failure of a single crop in a diversified system is less likely to lead to the economic collapse of the entire farm.
III. Diversified farming helps in spreading economic risks associated with price fluctuations or specific crop failures.
IV. Monoculture farming always uses fewer natural resources per unit of output.

(a) I and IV
(b) II and III
(c) I and II
(d) III and IV

Answer: (b) II and III

11. Assertion (A): The uncontrolled expansion of urban areas, often referred to as urban sprawl, poses a considerable threat to agricultural land.
Reason (R): Urban areas typically offer a wider range of employment opportunities and amenities, attracting populations from rural regions.

(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R does not explain A.
(c) A is true but R is false.
(d) A is false but R is true.

Answer: (b) Both A and R are true but R does not explain A.

12. Which of the following statements accurately describe common practices or principles within farming systems that prioritize long-term ecological health?
I. These systems invariably result in significantly lower crop yields when compared to high-input conventional methods.
II. They may involve the careful selection of crop varieties that are naturally resistant to common local pests.
III. Soil is often viewed as a fragile, living medium that requires careful protection and nurturing to maintain its long-term productivity.
IV. They strictly prohibit the use of any inputs that are not generated directly on the farm itself.
V. Emphasis is placed on the long-term conservation of natural resources.

(a) I, II, IV
(b) II, III, V
(c) I, IV, V
(d) II, IV, V

Answer: (b) II, III, V

13. Match the type of organic input with its correct description or an example of its composition:

Column A (Organic Input)	Column B (Description/Example)
(i) Biofertilisers	1. Decomposed animal excreta, bedding materials, and other farm waste.
(ii) Vermi-compost	2. Specific crops grown and then ploughed back into the soil to improve its fertility and structure.
(iii) Green Manure	3. Compost produced through the action of earthworms on organic matter.
(iv) Farm Yard Manure (FYM)	4. Microbial preparations that enhance the availability of plant nutrients in the soil.

(a) (i)–1, (ii)–2, (iii)–3, (iv)–4
(b) (i)–4, (ii)–3, (iii)–2, (iv)–1
(c) (i)–3, (ii)–1, (iii)–4, (iv)–2
(d) (i)–2, (ii)–4, (iii)–1, (iv)–3

Answer: (b) (i)–4, (ii)–3, (iii)–2, (iv)–1

14. Arrange the following aspects related to an ecologically sound agricultural approach, moving from a broad environmental objective to a more specific management practice:
(i) Limiting the overall use of synthetic pesticides in farming.
(ii) The overarching goal of protecting and enhancing the health of the environment.
(iii) Implementing integrated pest management (IPM) strategies.

(a) (i) -> (iii) -> (ii)
(b) (ii) -> (i) -> (iii)
(c) (iii) -> (ii) -> (i)
(d) (i) -> (ii) -> (iii)

Answer: (b) (ii) -> (i) -> (iii)

15. Consider the evolution of agricultural thinking and practices. Which sequence best reflects the general historical progression that led to the rise of the movement for more ecologically sound agriculture?
(i) The widespread adoption of industrial agriculture, characterized by high chemical inputs, following World War II.
(ii) A growing awareness and concern regarding the negative environmental and social consequences of these industrial agricultural practices.
(iii) The emergence and growth of a movement advocating for agricultural systems that prioritize ecological balance and long-term resource conservation.

(a) (i) -> (iii) -> (ii)
(b) (ii) -> (i) -> (iii)
(c) (i) -> (ii) -> (iii)
(d) (iii) -> (i) -> (ii)

Answer: (c) (i) -> (ii) -> (iii)

16. Which of the following are identified as significant obstacles or threats to the widespread adoption of more ecologically sound and resource-conserving agricultural practices?
I. The universal potential for immediate, increased short-term profits for all farmers who adopt these practices.
II. The often bureaucratic and inflexible nature of large institutions involved in agricultural policy and research.
III. Strong and unwavering support from agrochemical companies for methods that reduce the use of their products.
IV. The conservative nature of some universities and agricultural teaching institutions, making them slow to adopt new paradigms.
V. The transition costs and learning curve faced by farmers when adopting new practices and management skills.

(a) I, II, III
(b) II, III, IV
(c) I, IV, V
(d) II, IV, V

Answer: (d) II, IV, V

17. What are some key factors that have facilitated the growth of organic and ecologically-focused agriculture in India?
I. A consistently decreasing export market for organically produced agricultural crops.
II. The availability of comparatively cheap labour, which is beneficial for the often more labour-intensive methods of organic farming.
III. A notable lack of diverse agroclimatic regions across the country, limiting the variety of crops that can be grown organically.
IV. Increasing awareness regarding health and food safety among certain sectors of domestic consumers.
V. A growing export market and potential for price premiums for organically produced crops.

(a) I, II, III
(b) II, III, IV
(c) I, IV, V
(d) II, IV, V

Answer: (d) II, IV, V

18. Assertion (A): India is recognized globally as a significant exporter of organic tea.
Reason (R): In addition to tea, India possesses considerable export potential for a variety of other organic products, including certain spices and fruits, for which it has established niche markets.

(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R does not explain A.
(c) A is true but R is false.
(d) A is false but R is true.

Answer: (a) Both A and R are true and R is the correct explanation of A.

19. An approach to agriculture integrates three main goals: environmental health, economic profitability, and social and economic equity.
Which of the following scenarios best exemplifies the achievement of the “social and economic equity” goal within this framework?

(a) A large industrial farm significantly increases its overall crop yield by applying more synthetic fertilizers and pesticides.
(b) A farming cooperative implements policies ensuring fair wages, safe working conditions, and equitable profit-sharing for its labourers and members.
(c) A new irrigation technology is adopted on a large corporate farm, leading to a substantial reduction in water usage.
(d) An individual farmer focuses exclusively on maximizing personal profit margins through aggressive market speculation.

Answer: (b) A farming cooperative implements policies ensuring fair wages, safe working conditions, and equitable profit-sharing for its labourers and members.

20. Match the agricultural term with its most accurate definition or characteristic:

Column A (Term)	Column B (Definition/Characteristic)
(i) Organic Farming	1. The loss of the uppermost, most fertile layer of soil due to erosion or degradation.
(ii) Agroecosystem	2. All the living organisms, non-living components, and their interactions within an area used for agriculture and its adjacent lands.
(iii) Topsoil Depletion	3. The contamination of underground water sources, often by leaching agricultural chemicals.
(iv) Groundwater Contamination	4. A system of farming that involves growing crops without the use of synthetic chemicals, such as artificial pesticides and fertilisers.

(a) (i)–1, (ii)–3, (iii)–4, (iv)–2
(b) (i)–2, (ii)–1, (iii)–3, (iv)–4
(c) (i)–3, (ii)–4, (iii)–2, (iv)–1
(d) (i)–4, (ii)–2, (iii)–1, (iv)–3

Answer: (d) (i)–4, (ii)–2, (iii)–1, (iv)–3

21. Assertion (A): Direct comparisons of crop yields between conventional farming systems and those transitioning to ecologically sound practices can sometimes be misleading.
Reason (R): Soils in systems transitioning to ecologically sound practices immediately achieve higher natural fertility than established conventional systems that use chemical inputs.

(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R does not explain A.
(c) A is true but R is false.
(d) A is false but R is true.

Answer: (c) A is true but R is false.

22. Which statements accurately describe objectives or components of India’s “National Project on Development and Use of Biofertilisers”?
I. Its primary aim is to increase and promote the use of synthetic chemical fertilisers across the country.
II. It includes the development of quality standards and control measures for different types of biofertilisers.
III. It focuses exclusively on the large-scale production of biofertilisers, without addressing their distribution to farmers.
IV. Raising awareness through publicity and providing training to relevant stakeholders are among its stated objectives.
V. It aims to facilitate the production and widespread distribution of biofertilisers.

(a) I, II, III
(b) II, III, IV
(c) I, IV, V
(d) II, IV, V

Answer: (d) II, IV, V

23. Why is the practice of crop rotation considered beneficial within an agricultural system focused on ecological balance?
I. It significantly increases the farmer’s dependence on synthetic pesticides for pest control.
II. It can help to naturally break the life cycles of certain weeds, plant pathogens, and insect pests.
III. It generally leads to a more rapid depletion of essential soil nutrients compared to continuous monoculture.
IV. It can improve soil structure, leading to better water infiltration and an increased capacity of the soil to hold water.
V. It aids in conserving soil and retaining nutrients within the agroecosystem.

(a) I, II, III
(b) II, III, IV
(c) I, IV, V
(d) II, IV, V

Answer: (d) II, IV, V

24. A text states: “Sustainable agriculture does not mean a return to either the low yields or poor farmers that marked the 19th century.”
What does this statement primarily imply about the nature and goals of modern sustainable agriculture?

(a) It is fundamentally a regression to outdated and inefficient farming techniques from the past.
(b) It aims to achieve and maintain good yields and economic viability for farmers by applying modern ecological understanding and innovative practices.
(c) It prioritizes the preservation of historical farming methods above all concerns for productivity or farmer income.
(d) It is an approach that is only suitable for very small-scale, subsistence-level farming operations.

Answer: (b) It aims to achieve and maintain good yields and economic viability for farmers by applying modern ecological understanding and innovative practices.

25. Assertion (A): The number of family-owned and operated farms significantly increased after World War II due to widespread agricultural modernization.
Reason (R): Government policies that favoured maximising agricultural production and encouraged specialisation often provided greater benefits to larger, more industrialised agricultural operations.

(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R does not explain A.
(c) A is true but R is false.
(d) A is false but R is true.

Answer: (d) A is false but R is true.