SCI/P/4: WEEDING

This unit is about Weeding, Mulching and Pruning among others.

Weeding

It is the removal of unwanted plants from the garden.

A weed

A weed is an unwanted plant in a garden.

 Examples of weeds

  1. Spear grass
  2. Elephant grass
  3. Black jack
  4. Star grass
  5. Wandering Jew
  6. Couch grass
  7. Guinea grass
  8. Star grass

 Dangers of weeds in a garden

  1. They compete for light, water, nutrients and space with the crops.
  2. They encourage easy spread of pests.
  3. There encourage easy spread of crop diseases.
  4. They make harvesting difficult

Ways of controlling weeds

  1. Slashing
  2. Spraying /using herbicides
  3. Uprooting
  4. Crop rotation
  5. Mulching
  6. Digging

Advantages of weeding a garden

  1. It reduces the competition for light, nutrients, water and space in the garden.
  2. It makes harvesting easy.
  3. It controls the easy spread of pests.
  4. It prevents the easy spread of crop diseases.

 Uses of weeds to people

  1. Some weeds are used as mulches
  2. Some weeds are used as herbal medicine.
  3. Some weeds are used to feed animals like cattle e.g. elephant grass.

Manuring

It is the putting of fertilizers in the soil to make it more fertile.

Sources of manure

  • Animal dung and urine
  • Plant remains
  • Green plants

Types of manure (natural fertilizers)

Compost manure

It is got from plant materials and animal wastes.

WATCH THE VIDEO BELOW TO LEARN ABOUT HOW TO MAKE COMPOST MANURE

Green manure

It is got from ploughed buried and rotten green materials like legumes.

Farm yard manure

It is got from farm animal wastes, urine and decayed material.

WATCH THE VIDEO BELOW TO LEARN MORE ABOUT THE MAKING AND USES OF ORGANIC MANURE

Organic mulches

It is got through mulching using dry plant materials.

Mulching

  • Mulching is the covering of top soil with dry plant materials.
  • Mulches are plant materials used for mulching.

Examples of mulches

  • Elephant grass
  • Coffee husks
  • Banana leaves
  • Chopped stems of bananas

Advantages of mulching

  • It keeps water (moisture) in the soil.
  • It controls soil erosion.
  • It makes the soil fertile.
  • It controls the rapid growth of weeds.

 Disadvantages of mulching

  • Mulching keeps pests
  • Some mulches can grow into weeds
  • Mulching is a fire hazard
  • It is tiresome

WATCH THE VIDEO BELOW TO LEARN ABOUT MULCHING AND TYPES OF MULCHING AND HOW YOU CAN MULCH YOUR GARDEN

Pruning

Pruning is the removal of unwanted parts from a plant.

Advantages of pruning

  • It reduces the easy spread of crop diseases.
  • It reduces competition for sunlight,water,nutrients and air.
  • It improves on crop yields.

WATCH THE VIDEO BELOW TO LEARN ABOUT PRUNING TOMATOES

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