CLASSES AND USES OF CROPS LESSON NOTE

PROPOSED LESSON PLAN/NOTE FOR THE NINEHT WEEK ENDING 11th NOVEMBER, 2022

2022/2023 ACADEMIC SESSION

SUBJECT: AGRIC SCIENCE

TOPIC: CLASSES AND USES OF CROPS

CLASS: GRADE 7

NUMBER OF STUDENTS: 25

AVERAGE AGE: 11+ YEARS

GENDER: MIXED

PERIOD: 7th AND 8th PERIOD ON TUESDAY AND FRIDAY RESPECTIVELY

TIME: 1:20-2:00

DURATION: 40 MINUTES

DATE: 07/11/2022

SPECIFIC OBJECTIVES: By the end of the lesson the students should be able to;

1. Classify crops;

2. Classify crops based on life span;

3. Classify crops based on products derived from crops.

ENTRY BEHAVIOUR/ PREVIOUS KNOWLEDGE: Students are familiar with some crops.

INSTRUCTIONAL METHODS/TECHNIC: Simulation, visual.

INSTRUCTIONAL MATERIALS: Picture showing different kinds of crops.

INTRODUCTION: The teacher introduces the topic with set induction.

STEP I: CLASSIFICATION OF CROPS

  Plants differ in many ways. Based on these differences, crop plants thus have been classified or group based on their life span, mode of production, morphology and usage.

STEP 2: CLASSIFICATION OF CROPS BASED ON LIFE SPAN

i. Ephemeral crops: Ephemeral crops are crops that grow and complete their life cycle many times before the end of one year. They are short live. Example is balsam plant.

ii. Annual crops: Annual crops are crops that complete their life cycles within one year. They are short lived. Examples maize, millet, guinea corn( sorghum), etc.

iii. Biennial crops: Biennial crops are crops that complete their life cycles in two years. Examples onions, garlic, etc.

iv. Perennial Crops: These crops stay in the field for more than two years (from three years upwards). These groups of crop are long lived. Examples includes; mango, cocoa, oil palm, coconut palm, cashew, etc.

STEP3: CLASSIFICATION OF CROPS BASED ON PRODUCTS DERIVED FROM CROPS

People derive a lot of benefits from crops. Based on these benefits, crop plants have been classified into:

i. Food Crops: These are crops that provide major sources of food because of their high nutrients contents. Examples include

cereals ( maize, rice, sorghum, wheat, millet, barley, oats, rye, etc.),

 legumes/pulses ( cowpea, groundnut, soybean, pigeon pea, bambara groundnut, mung bean, garden pea, green beans, French beans, etc.),

tubers ( yam, sweat potatoes, irish potatoes, etc.),

fruits ( mango, pawpaw, guava, cashew, star apple, avocado pea, local pear, sour sop, oranges, sweet sop, apples, etc.),

vegetables ( fluted pumpkin, water leaf, lettuce, cabbage, amaranthus, pumpkin, carrot, melon, water melon, cucumbers, tomato, pepper, garden egg, etc.). They are edible plants which are consumed for the nourishment of the body.

ii. Oil Crops: Oil crops are crops that yield good quantities of edible oils. They are of two types viz: Major crops and minor oil crops.

Major oil crops are those that yield large quantities of oil as their main products. Examples are: oil palm, coconut palm, groundnuts, etc. Minor oil crops are those crops that yield low quantities of edible oil along with other major products e.g. soybean, sunflower, bread-fruit, cocoa (cocoa butter), corn, etc. Oils from these crops are used for cooking, frying, baking, etc.

iii. Spice Crops: Some crops have characteristic aroma and flavor when they are added to food. These crops are called spice crops. Examples include lemon grass, vanilla turmeric, monodora myrishca (ehuru) mint basil, ginger, onions, garlic.

iv. Latex Crops: These are tapping crops or plants that produce whitish gummy liquid (milky sap) when cut. The white gummy liquid is called latex. Examples of plants include rubber, acalypha, etc. They are process through a method known as tapping.   

v. Beverages and Stimulant Crops: These are crops that produce beverages and stimulants. Examples of stimulants include coffee, tea, kola, pepper, etc. Example of beverage crop is cocoa.

vi. Fibre Crops: Fibre crops are those crops that yield high quantities of fibre. There are three kinds of fibre viz: leaf fibre, stem fibre and fruit fibre. Leaf fibre crops are crops and fruits whose fibres are located in the leaf examples sisal hemp. Stem fibre crops have their fibres located in the stem examples kenaf while fruit fibre crops have their fibres located in the fruit. Examples include cotton, silk, cotton tree.

vii. Sugar crops: Sugar crops are crops that provide good sources of sugar. Examples are sugarcane, sugar beets and date palm.

EVALUATION: Oral questions

1. Classify crops;

2. Classify crops based on life span;

3. Classify crops based on products derived from crops.

SUMMARY/CONCLUSSION: Plants differ in many ways. Based on these differences, crop plants thus have been classified or group based on their life span, mode of production, morphology and usage.

ASSIGNMENT:

1. Classify crops;

2. Classify crops based on life span;

3. Classify crops based on products derived from crops.

 

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