Soil and Crop Production
1. What is Soil?
Soil is the top layer of the Earth's surface where plants grow. It is made up of:
- Tiny pieces of rocks (minerals)
- Humus (decayed plants and animals)
- Air
- Water
- Living organisms like earthworms and insects
Importance of Soil
- Helps plants grow.
- Stores water for plants.
- Provides nutrients to crops.
- Home for many living organisms.
- Prevents floods and soil erosion.
2. Formation of Soil
Soil is formed over thousands of years by the breaking down of rocks due to:
- Heat from the Sun
- Rain
- Wind
- Flowing water
- Roots of plants
The decayed remains of plants and animals mix with rock particles to form humus, making the soil fertile.
3. Types of Soil (Detailed)
A. Sandy Soil
Features
- Large particles
- Loose and light
- Water drains quickly
- Contains less humus
Advantages
- Easy to dig.
- Good for crops that need less water.
Disadvantages
- Does not hold water well.
- Less fertile.
Crops Grown
- Coconut
- Groundnut
- Watermelon
- Carrot
B. Clayey Soil
Features
- Very fine particles
- Sticky when wet
- Holds a lot of water
- Rich in nutrients
Advantages
- Very fertile.
Disadvantages
- Poor drainage.
- Difficult to plough when wet.
Crops Grown
- Rice
- Wheat
- Sugarcane
C. Loamy Soil
Features
- Mixture of sand, clay and silt
- Rich in humus
- Holds enough water
- Well aerated
Advantages
- Best soil for farming.
- Very fertile.
Crops Grown
- Wheat
- Vegetables
- Fruits
- Pulses
- Flowers
4. Crop Production
Crop production means growing plants on a large scale for food and other uses.
Steps of Crop Production
1. Preparation of Soil
- Ploughing loosens the soil.
- Removes weeds.
- Mixes air into the soil.
2. Sowing
- Healthy seeds are sown.
- Seeds are placed at the correct depth and distance.
3. Adding Manure and Fertilisers
- Manure is natural.
- Fertilisers are made in factories.
- Both help crops grow well.
4. Irrigation
Water is supplied to crops through:
- Wells
- Canals
- Tube wells
- Sprinklers
- Drip irrigation
5. Weeding
Removing unwanted plants called weeds.
6. Harvesting
Cutting the mature crop.
7. Storage
Grains are dried and stored in clean, dry places.
5. Seasons of Crops
Kharif Crops
- Grown during the rainy season.
- Sown: June–July
- Harvested: September–October
Examples:
- Rice
- Maize
- Cotton
- Soybean
Rabi Crops
- Grown during winter.
- Sown: October–November
- Harvested: March–April
Examples:
- Wheat
- Gram
- Mustard
- Peas
6. Main Food Crops
Food crops are grown mainly for eating.
Crop
Main Use
Rice
Staple food
Wheat
Bread, chapati
Maize
Food and animal feed
Millets
Healthy cereals
Pulses
Rich in protein
7. Main Cash Crops
Cash crops are grown mainly for selling.
Crop
Products
Cotton
Clothes
Jute
Bags, ropes
Sugarcane
Sugar, jaggery
Tea
Beverage
Coffee
Beverage
Rubber
Tyres, gloves
8. Importance of Farmers
- Grow food for everyone.
- Help the country's economy.
- Provide raw materials to industries.
- Create employment.
9. Soil Conservation
Ways to protect soil:
- Plant more trees.
- Avoid cutting forests.
- Build terraces on hills.
- Prevent overgrazing.
- Use contour ploughing.
10. Key Words
- Soil: Upper layer of the Earth where plants grow.
- Humus: Decayed plant and animal matter.
- Fertile: Rich in nutrients.
- Crop: Plants grown on a large scale.
- Irrigation: Supplying water to crops.
- Harvesting: Cutting mature crops.
- Weeds: Unwanted plants.
- Food Crops: Crops grown for food.
- Cash Crops: Crops grown mainly for sale.
Remember
- Sandy soil → Drains water quickly.
- Clayey soil → Holds the most water.
- Loamy soil → Best for farming.
- Rice needs plenty of water.
- Wheat grows best in winter.
- Cotton, jute, tea and sugarcane are important cash crops.