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What is the Development of Drought-Resistant Crops?
Grade Level:
Class 12
AI/ML, Physics, Biotechnology, FinTech, EVs, Space Technology, Climate Science, Blockchain, Medicine, Engineering, Law, Economics
Definition
What is it?
The development of drought-resistant crops involves creating new types of plants that can grow and produce food even with very little water. This is crucial in areas like many parts of India where rainfall can be unpredictable and water scarcity is a big problem.
Simple Example
Quick Example
Imagine you have two flower pots. One has a regular marigold plant, and the other has a special 'drought-resistant' marigold. If you water both normally for a week, they will grow fine. But if you stop watering for two weeks, the regular marigold might wilt and die, while the special one stays green and healthy, just like a cricketer who can perform well even on a very dry, dusty pitch.
Worked Example
Step-by-Step
Let's say a farmer wants to choose a new rice variety. They have two options: Variety A (regular) and Variety B (drought-resistant).
1. **Trial Setup:** The farmer plants both varieties in two separate fields of the same size, with similar soil.
2. **Watering Schedule:** For the first month, both fields receive regular irrigation.
3. **Drought Simulation:** For the next two months, the irrigation for both fields is reduced by 70%, mimicking a drought situation.
4. **Observation - Variety A:** After two months, Variety A's plants are visibly stressed, many leaves are yellow, and the yield of grains is very low, maybe 200 kg per field.
5. **Observation - Variety B:** In contrast, Variety B's plants are still green, show less stress, and produce a much better yield, say 700 kg per field.
6. **Conclusion:** Variety B is clearly more drought-resistant, as it produced significantly more food under water-stressed conditions.
Answer: Variety B is the better choice for drought-prone areas.
Why It Matters
Developing drought-resistant crops is super important for ensuring food security for everyone, especially with climate change making droughts more common. Scientists in biotechnology and climate science use advanced tools like AI/ML to identify genes and develop these crops. This work can lead to careers in agricultural research, food production, and even help manage water resources better for entire regions, preventing hunger.
Common Mistakes
MISTAKE: Thinking drought-resistant crops need no water at all. | CORRECTION: Drought-resistant crops need less water than regular crops, but they still need some water to survive and grow. They are 'resistant', not 'immune'.
MISTAKE: Believing these crops are only created by genetic modification (GM). | CORRECTION: While GM is one method, many drought-resistant crops are developed through traditional breeding methods, where scientists select and cross-breed plants with desired traits over generations.
MISTAKE: Assuming drought-resistant crops will solve all farming problems instantly. | CORRECTION: Drought resistance is one important trait. Farmers also need crops that resist pests, produce high yields, and suit local soil conditions. It's one piece of a bigger puzzle.
Practice Questions
Try It Yourself
QUESTION: Why is it important for India to develop drought-resistant varieties of staple crops like rice and wheat? | ANSWER: India has a large population and many regions experience unpredictable rainfall and water scarcity, making drought-resistant crops essential for ensuring food security and farmers' livelihoods.
QUESTION: A new chickpea variety is being tested. In a trial, it produced 500 kg per acre with normal water, but only 200 kg per acre when water was reduced by 60%. A known drought-resistant variety produced 450 kg per acre with normal water and 350 kg per acre with 60% less water. Is the new variety truly drought-resistant compared to the known one? Explain. | ANSWER: No, the new variety is not truly drought-resistant compared to the known one. While it produced more under normal conditions, its yield dropped by 60% (from 500 to 200 kg) under water stress, whereas the known drought-resistant variety only saw a 22% drop (from 450 to 350 kg) and still yielded more (350 kg) than the new variety (200 kg) in drought conditions.
QUESTION: A farmer grows maize. Last year, due to less rain, his regular maize yield was 100 quintals (1 quintal = 100 kg). If he switches to a drought-resistant maize variety that is expected to yield 80% of its normal yield even in drought conditions, and its normal yield is 150 quintals, how much more maize (in kg) can he expect to harvest this year during a similar drought? | ANSWER: Regular maize yield in drought = 100 quintals = 10,000 kg. Drought-resistant maize normal yield = 150 quintals. Drought-resistant maize yield in drought = 80% of 150 quintals = 0.80 * 150 = 120 quintals. More maize harvested = 120 quintals - 100 quintals = 20 quintals. In kg, this is 20 * 100 kg = 2,000 kg more maize.
MCQ
Quick Quiz
Which of the following is NOT a primary goal of developing drought-resistant crops?
To reduce water usage in agriculture
To ensure stable food production in dry regions
To make crops grow faster than usual
To help farmers cope with unpredictable rainfall
The Correct Answer Is:
C
The main goals are about coping with water scarcity (options A, B, D). Making crops grow faster is a separate goal, not directly related to drought resistance.
Real World Connection
In the Real World
In states like Maharashtra and Rajasthan, where farmers often face water shortages, agricultural scientists at institutions like ICAR (Indian Council of Agricultural Research) are actively developing and promoting drought-resistant varieties of jowar, bajra, and pulses. These special seeds help farmers get a better harvest even when the monsoon rains are weak, directly impacting their income and the food supply for local communities.
Key Vocabulary
Key Terms
DROUGHT: A long period of unusually low rainfall, leading to a shortage of water. | RESISTANT: Able to withstand or recover quickly from difficult conditions. | FOOD SECURITY: The state of having reliable access to a sufficient quantity of affordable, nutritious food. | GENETIC MODIFICATION (GM): Changing the genes of a living organism to produce desired traits. | YIELD: The amount of a crop produced from a given area of land.
What's Next
What to Learn Next
Now that you understand drought-resistant crops, you can explore 'Sustainable Agriculture Practices'. This will show you how these special crops fit into a bigger picture of farming that protects our environment and ensures food for the future. It's like learning how a special bat helps a cricketer, and then learning about the whole strategy of the game!
