Crop Classification SS1 Horticulture and Crop Production Lesson Note

In our last lesson, we talked about what horticulture is. Today, we are looking at how we group or “classify” crops.

If you go to a big market like Mile 12 in Lagos or Bodija in Ibadan, you see thousands of plants. Scientists don’t just look at them randomly; they group them based on what we use them for.

In SS1, we focus on four main groups:

1. Food Crops (For our bellies)
2. Cash Crops (For the pocket/economy)
3. Ornamental Crops (For beauty)
4. Medicinal Crops (For health)

Let’s dive into the first one!

Food Crops (The Energy Providers)

These are the most common crops in Nigeria. We grow them primarily to eat. Food crops are further divided into groups based on the nutrients they give us:

• Cereals (Grains): These give us carbohydrates for energy. Examples: Maize (Ag bado), Rice, Millet, and Sorghum.
• Legumes (Pulses): These are the “bodybuilders” (protein). Examples: Beans (Cowpea), Soybeans, and Groundnuts.
• Roots and Tubers: These grow underground and are very heavy in energy. Examples: Yam, Cassava, Sweet Potato, and Cocoyam.
• Vegetables & Fruits: As we saw in Olericulture, these give us vitamins. Examples: Pumpkin leaves (Ugwu), Watermelon, and Oranges.

Cash Crops (The Money Makers)

A Cash Crop is a crop grown specifically to be sold, often to other countries (export), to make a profit. While you can eat some of them, their main job is to bring “foreign exchange” into Nigeria.

Major Nigerian Cash Crops:

• Cocoa: The king of cash crops in the West. We use it to make chocolate and beverages like Milo or Bournvita.
• Oil Palm: Used for red oil, vegetable oil, and even soap making.
• Rubber: The milky sap (latex) is used to make tyres and plastic boots.
• Cotton: Grown mostly in the North to make the clothes we wear.
• Groundnut: Historically, Nigeria was famous for “Groundnut Pyramids.”

Why they matter: They help the government build roads and schools, and they provide raw materials for our local factories.

Ornamental Crops (The Beautifiers)

Not every crop is for eating or selling in a sack. Ornamental crops are grown to make our environment look attractive and smell nice. They are the “makeup” of the earth.

Where do we find them?

• In Gardens: To create a peaceful place to sit.
• Along Roadsides: To reduce dust and provide shade.
• In Houses: As indoor plants to purify the air.

Common Examples in Nigeria:

• Flowers: Roses, Hibiscus, and Bougainvillea.
• Shrubs: Ixora (the one with small red/yellow flowers we see in school fences).
• Lawn Grass: Carpet grass or Bahama grass.
• Shade Trees: Whistling Pine or Neem (Dogonyaro) trees.

Medicinal Crops (Nature’s Pharmacy)

Long before hospitals were common, our ancestors used plants to stay healthy. Medicinal crops are plants that contain special chemicals used to prevent or cure diseases.

In Nigeria, we often call these “herbal” plants, but scientists use them to make the tablets we buy at the chemist too!

Famous Examples:

• Neem (Dogonyaro): Very popular for treating malaria and skin itches.
• Aloe Vera: Used for healing burns and making skin smooth.
• Ginger & Garlic: Great for treating coughs, colds, and heart health.
• Lemon Grass: Boiled as tea to treat fever and help people relax.
• Bitter Leaf: Not just for soup! It helps wash the system and control blood sugar.

Summary Table for Revision