AGRICULTURAL MACHINERI ES
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Subject: Agricultural Science
Class: SHS 3
Term: 1st Term
Week: 9
Grade code: 3.1.3.LI.1
Strand code: 1
Sub-strand code: 3
Content standard code: 3.1.2.CS.2
Indicator code: 3.1.3.LI.1
Theme: NEW DAWN AGRICULTURE
Subtheme: AGRICULTURAL MACHINERI ES
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Welcome, future leaders of Ghana's agriculture! Today, we are exploring a critical topic: Irrigation Systems. In Ghana, our rainfall patterns can be unreliable. We have distinct rainy and dry seasons, and climate change is making things even more unpredictable. For a farmer growing valuable plantation crops like cocoa, oil palm, mangoes, or running a large vegetable farm, waiting for rain is not a viable business strategy. Irrigation, which is the artificial application of water to land or soil, allows us to farm all year round, increase our yields, ensure food security for our communities, and boost our national economy.
What is Irrigation?
Irrigation is the science of artificially applying water to crops in a controlled manner to supplement rainfall. It is used to assist in the growing of agricultural crops, maintenance of landscapes, and revegetation of disturbed soils in dry areas and during periods of inadequate rainfall.
Importance in Ghana: All-Year-Round Farming: Enables cultivation during the long dry season, especially in the northern savannah regions. Increased Crop Yield: Proper water supply ensures crops reach their full potential, leading to higher harvests. Food Security: Consistent food production reduces our reliance on rain-fed agriculture and food importation. Economic Growth: Supports large-scale commercial farming for export (e.g., pineapples, bananas) and provides employment. Crop Diversification: Allows farmers to grow a wider variety of crops, including those with high water requirements. Types of Irrigation Systems
We can classify irrigation systems into several major categories. A. Surface Irrigation