Date: 30th of January – 3rd of February 2023
Class: JSS 2
Term: 2nd Term
Subject: Agricultural Science
Teaching Aid: A chart
Reference Book: WABP Junior secondary Agriculture for Nigerian School 1 by Anthony Youdeowei et al
Behavioural Objective: By the end of this topic, students should be able to
Step 1: Teacher revises last topic
Step 2: Teacher introduces and explains new topic
Step 3: Teacher writes note on the board
Step 4: Teacher evaluates students
Step 5: Teacher marks students' notes and give assignment
Soil is the uppermost layer of the earth’s crust in which plants have their roots and from which they obtain nutrients.
Types of soil
There are three main types of soil. They are:
Sandy Soil: A soil is said to be sandy of the proportion of sand particles in a soil sample is very high
Properties Of sandy soil include
Clay Soil: soil is said to be clayey if the proportion of clay in a sample of the soil is very high
Properties of clay soil include
Loamy Soil: it is the mixture of sandy and claysoil with adequate humus
Properties of Loamy soil include:
This is the ability of soil to sustain plant growth and help crop yield. The fertility of a soil determines the performance of a plant and its yield.
A soil is said to be fertile if it contains the necessary nutrient required by plant to grow and reproduce. These nutrients are grouped into two:
Micro Nutrients: these are nutrients required by plants in small quantities. Examples are Zinc,copper,boron,iron, chlorine, manganese and molybdenum
Macro Nutrients: these are nutrients required by plants in large quantities. Examples are calcium, sulphur, potassium, nitrogen, phosphorus, magnesium ..
Ways of maintaining soil fertility
Assignment: In a tabular form, give five differences between clay and sandy soil.
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