Lesson Notes By Weeks and Term v4 - JHS 1

CROP PRODUCTION

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Subject: Science

Class: JHS 1

Term: 1st Term

Week: 10

Grade code: B7.2.3.1.2

Strand code: 2

Sub-strand code: 3

Content standard code: B7.2.3.1

Indicator code: B7.2.3.1.2

Theme: CYCLES

Subtheme: CROP PRODUCTION

Lesson Video

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Performance objectives

Identify different sources of plant nutrients.
Describe their physical characteristics.
Explain how to apply them in a garden.
Work together to discuss application methods.

Lesson summary

Crop production is important in Ghana because many families depend on farming for food and income. To grow healthy crops (maize, pepper, tomato, garden eggs, cassava, okro), farmers must supply plant nutrients. These nutrients come from different nutrient sources (e.g., manure, compost, chemical fertilisers). Each nutrient source has physical characteristics (how it looks, feels, smells, size of particles, whether it is dry/wet, powder/granules/liquid). These physical characteristics affect how we apply it safely and effectively in the field or school garden.

Lesson notes

A. Meaning of Plant Nutrients and Nutrient Sources Plant nutrients are substances plants need for growth, healthy leaves, strong roots, flowering and fruiting. Nutrient sources are materials we add to soil or plants to supply nutrients.

Common nutrient sources in Ghana (JHS level): Organic nutrient sources (from living things): Animal manure (poultry droppings, cow dung, goat/sheep droppings) Compost (decomposed plant/animal waste) Green manure (fresh green plants/legumes incorporated into soil) Inorganic (chemical/mineral) fertilisers: Granular fertilisers (e.g., NPK 15-15-15, Sulphate of Ammonia, Urea) Liquid nutrient sources: Liquid fertiliser/foliar feed (sold in bottles/sachets) Manure tea/compost tea (soaked manure/compost solution)

> Indicator focus: Describe the physical characteristics of plant nutrient sources and explain how these characteristics affect application.

B. Physical Characteristics and How They Affect Application

Evaluation guide

Identify each plant nutrient source and explain how its physical
structure and appearance affect its application.
Describe in groups how each type of nutrient source may be applied
to plants in the field (e.g. school garden).