Lesson Notes By Weeks and Term v4 - SHS 3
ECONOMICS FOR AGRICULTURE
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ECONOMICS FOR AGRICULTURE
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Subject: Agriculture
Class: SHS 3
Term: 2nd Term
Week: 15
Grade code: 3.5.1.LI.3
Strand code: 5
Sub-strand code: 1
Content standard code: 3.5.1.CS.1
Indicator code: 3.5.1.LI.3
Theme: AGRICULTURAL ECONOMICS, AGRIBUSINESS AND COMMUNICATION
Subtheme: ECONOMICS FOR AGRICULTURE
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Welcome, future agricultural leaders! In today's lesson, we are moving from the farm field to the farmer's mind. It is not enough to know *how* to grow crops or raise animals; a successful farmer must also know *how much* to produce to be profitable. This lesson is about making smart business decisions. Imagine you are a maize farmer in the Ashanti Region. How many bags of fertilizer should you buy? If you use too little, your yield will be low. If you use too much, you waste money and might even damage the crop! This lesson will give you the economic tools to answer that question precisely.
A. Fixed Inputs vs. Variable Inputs
In agriculture, to produce anything (like yam, cocoa, or chicken), we need resources. We call these inputs or factors of production. In the short run (e.g., a single planting season), these inputs can be classified into two types: Fixed Inputs: These are resources that do not change regardless of how much you decide to produce. The farmer has to pay for them even if they produce nothing. Examples in Ghana: Land: A 2-acre plot of land remains 2 acres whether you plant 100 seeds of maize or 1000. Farm Buildings: A poultry house or a storage barn. Heavy Machinery: A tractor or a corn sheller. Rent/Land Lease Payments: The annual rent for the land is fixed. Permanent Labour: The salary of a permanent farm manager. Variable Inputs: These are resources that change directly with the level of production. To produce more, you need more of these inputs. Examples in Ghana: Fertilizer: The more maize you want to grow, the more bags of NPK fertilizer you will need. Seeds/Seedlings: You need more cocoa seedlings to establish a larger farm. Daily Labour (By-day workers): Hiring workers for weeding or harvesting. The more acres you have, the more workers you hire. Fuel: The more you use your tractor, the more diesel you buy. Agrochemicals: Pesticides, herbicides. Animal Feed: For a poultry farmer, the amount of feed depends on the number of birds. B. The Production Function and The Law of Diminishing Marginal Returns
The Production Function is the technical relationship between the inputs a farmer uses and the maximum output they can get. We can write it simply as:
*Output = f(Inputs)*