ADVANTAGES AND DISADVANTAGES OF CHEMICAL WEED CONTROL

ADVANTAGES AND DISADVANTAGES OF CHEMICAL WEED CONTROL

Chemical weed control is the use of chemicals to kill weeds. The chemicals used to kill weeds are called Herbicides. These chemicals may scotch weeds or might interfere with their physiological processes like photosynthesis




Advantages of Chemical weed control

  • It is very effective and quick at killing weeds
  • It saves time as a large area of land can be effectively covered in a short period of time
  • Roots of crops can not be damaged unlike in mechanical method
  • Herbicides eliminate drudgery of labour as in hand weeding
  • Soil structure is not destroyed when using chemicals as a case in mechanical weed control
  • Where relief limits mechanical control, chemical weed control is the best
  • It makes harvesting more easier as there‚Äôs no interference with the weeds
  • Where the morphology of a crop limits hand weeding e.g weeding sugarcane, sisal, chemicals can be
    effectively used
  • It is cheaper on a large scale lowering costs of production




Disadvantages of chemical weed control

  • It requires skilled labour especially in determining the concentration and mixing rators
  • Chemicals pollute air and water at the farm
  • Non selective chemicals may damage crops if used wrongly
  • Chemicals are poisonous to both man and live stock
  • Chemicals are expensive in terms of costs
  • Chemicals can kill useful organisms e.g the pollinators and predators e.t.c

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