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WEEDS

SUBJECT: AGRICULTURAL SCIENCE

TERM: THIRD TERM

WEEK: WEEK 11

CLASS: PRIMARY 4

DURATION: 40 MINUTES

TOPIC: WEEDS

UNITS:

  • Definition of weeds
  • Examples of some common weeds
  • Importance of weeds to farmers and the environment.

PERFORMANCE OBJECTIVES

At the end of this Module, Pupils should be able to know the:

  • Definition of weeds
  • Examples of some common weeds
  • Importance of weeds to farmers and the environment

TEACHING AND LEARNING MATERIALS

  • Whiteboard/ Chalkboard
  • Explanatory posters/pictures
  • Explanatory videos
  • Weeds

TEACHING AND LEARNING METHOD

  • Explanation
  • Discussion
  • Questions and Answers.

REFERENCE MATERIALS

  • Universal Basic Education Curriculum.
  • NERDC Basic Education Curriculum for Primary Schools.
  • Online Materials.
  • Lagos State Agricultural Science Scheme of Work
  • Agricultural Science for Primary Schools.

                        MODULE CONTENT

Weeds are unwanted plant. It can also be a plant growing in the wrong place.

EXAMPLES OF SOME COMMON WEEDS

  • Nutsedge,
  • pampas grass
  •  and Bermuda grass
  • Bindweed (creeping jenny)
  • Ground Ivy (Creeping Charlie)
  • Common Milkweed
  • Ragweed
  • Jimsonweed
  • Pokeweed
  • Sorrel
  • Dandelion
  • Broadleaf plantain
  • Canada Thistle
  • Clover
  •  purslane

EFFECTS OF WEEDS TO FARMERS AND THE ENVIRONMENT

  • They compete for space, water and light up the planted crops on the farm.
  • They compete with planted crops for plant foods(nutrient)
  • They reduce the yield of harvested crops
  • They invites diseases and pests to the planted crops
  • Control of weeds increases the cost of producing farm produce
  • Overgrown weeds make our environment bushy and dirty
  • Bushy environment keeps snakes, scorpions and other dangerous animals.

IMPORTANCE OF WEEDS TO FARMERS AND THE ENVIRONMENT

  • They provide nectar for bees.
  • Protect the soil from erosion
  • Sometimes they help to beautify our environment
  • Replenish organic matter, and feed and restore soil life
  • Absorb, conserve, and recycle soluble nutrients that would otherwise leach away
  • Absorb carbon dioxide from the atmosphere
  • Restore biodiversity
  • Provide habitat for insects and animals
  • They are source of pesticides
  • Weeds provide food and cover for animal

PRESENTATION

  • The Teacher revises the previous lesson.
  • The Teacher introduces the topic.
  • The Teacher explains the lessons.

EVALUATIVE ACTIVITIES

  • What are weeds?
  • Mention three Examples of some common weeds
  • List three Importance of weeds to farmers and the environment

CONCLUSION: the teacher summarize the lesson.

Lessonplan

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