Science Class 9 - Improvement In-Food-Resources Notes

Improvement in Food Resources

In this chapter, you will learn about ways to improve food production, the importance of nutrients, and how science helps us grow better crops and rear healthier animals. By the end of this chapter, you will understand how food resources can be improved for a growing population.

Introduction

Food is essential for life. As the population increases, we need to produce more food. Improvement in food resources means using better methods to grow crops and rear animals so that we get more and better food.

Types of Food Resources

• Crops: Plants grown for food, like rice, wheat, and vegetables.
• Animals: Cows, goats, hens, and fish give us milk, meat, eggs, and more.

Improving Crop Production

• Manure and Fertilizers: Add nutrients to the soil to help plants grow better.
• Irrigation: Supplying water to crops using canals, wells, or sprinklers.
• Crop Variety Improvement: Growing better types of seeds that give more yield and resist diseases.
• Protection from Pests: Using pesticides and natural methods to keep insects and diseases away.

Improving Animal Husbandry

• Breeding: Selecting healthy animals to produce better offspring.
• Proper Feeding: Giving animals nutritious food for better growth and production.
• Healthcare: Vaccinating and treating animals to keep them healthy.
• Clean Shelter: Keeping animals in clean and safe places.

Sustainable Practices

• Using natural fertilizers and compost.
• Rotating crops to keep soil healthy.
• Saving water and using it wisely.
• Avoiding too many chemicals to protect the environment.

Practice Questions

1. What is manure? How does it help crops?
2. Name two ways to improve animal health.
3. Why is irrigation important for crops?
4. What is crop rotation?
5. How can we protect crops from pests?

Challenge Yourself

• List three sustainable farming practices.
• Draw and label a healthy farm showing crops and animals.

Did You Know?

• India is one of the largest producers of milk and rice in the world!
• Organic farming uses only natural fertilizers and pesticides.

Glossary

• Manure: Natural fertilizer made from animal waste.
• Irrigation: Supplying water to crops.
• Crop Rotation: Changing the type of crop grown in a field each season.
• Breeding: Producing young animals with desired qualities.

Answers to Practice Questions

1. Manure is natural fertilizer; it adds nutrients to the soil and helps crops grow.
2. Proper feeding and healthcare (vaccination, clean shelter).
3. Irrigation gives crops the water they need to grow.
4. Crop rotation is growing different crops in the same field in different seasons.
5. By using pesticides, natural methods, and keeping fields clean.

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Improving food resources helps feed everyone and keeps our world healthy!