Lesson Notes By Weeks and Term v4 - SHS 1

Lesson Video

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Performance objectives

• Define economic production and its importance.
• Describe post-harvest practices for vegetable crops.
• Demonstrate how to harvest and prepare crops for market.
• Explain how to market agricultural produce effectively.

Lesson summary

Welcome, future agri-entrepreneurs! In our previous lessons, we learned how to plant and care for our crops. But growing healthy crops is only half the journey. What happens after you harvest the fresh tomatoes, okro, or kontomire from the farm? How do you make sure they don't spoil before they reach the market? And how do you sell them to make a profit? This lesson is about turning your hard work in the garden into money in your pocket. We will explore the critical steps of post-harvest handling and marketing.

Lesson notes

A. Harvesting: The First Step to Profit

Harvesting is the process of gathering a crop from the field when it has reached the right stage of maturity. The timing and method of harvesting are crucial. Harvesting too early or too late can lead to poor quality and significant financial loss. Harvesting Maturity: This refers to the ideal time to harvest a crop. There are two main types: Physiological Maturity: The stage when the plant or fruit is fully developed and can ripen on its own after being picked. For example, a mature green tomato that will turn red after harvesting. Seeds at this stage can germinate. Commercial (Horticultural) Maturity: The stage at which the crop is most desired by consumers. This can be before or after physiological maturity. Example (Okro): We harvest okro when it is young, tender, and immature. This is its commercial maturity. If we wait for physiological maturity, the pods become tough, fibrous, and inedible. Example (Pepper): Green pepper is harvested at commercial maturity (immature). Red pepper (like `kpakpo shito`) is harvested at physiological maturity (fully ripe). Harvesting Techniques: Manual Harvesting: Using hands or simple tools (cutlass, knife, secateurs). This is common in Ghana for vegetables and fruits. It is labour-intensive but allows for selective picking and causes less damage to the produce. Mechanical Harvesting: Using machines (e.g., combine harvesters for maize). This is efficient for large farms but is expensive and can cause more bruising to delicate crops.

Ghanaian Examples of Manual Harvesting: Tomatoes: Hold the fruit gently and twist it at the stalk (pedicel) to detach it. Harvest in the cool of the morning to reduce heat build-up. Kontomire (Cocoyam Leaves): Use a sharp knife to cut the stalk of the outer, mature leaves, leaving the younger leaves to grow. Garden Eggs: Cut the stalk with a knife or secateurs, leaving a small piece of the calyx (the green "cap") attached. This improves its appearance and shelf life. B. Post-Harvest Practices: Protecting Your Investment

Post-harvest practices are all the activities performed on a crop from the time of harvesting until it reaches the consumer. The main goal is to maintain quality and reduce losses. In Ghana, it is estimated that 20-50% of fruits and vegetables are lost after harvest due to poor handling!

Evaluation guide

• Carry out required post -harvest practices and market the produce.
• Project -Based Learning: Learners in mixed -ability and mixed -gender groups are assigned to
• vegetable crops and ornamental plants. Learners form subgroups to harvest and market the
• produce. Appropr iate post -harvest practices are carried out where necessary. Various groups