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3 marksCrop Management

CSEC Agricultural Science · May/June 2010 · Paper 2 · Question 8(a)

Weeds negatively impact crop production.

List THREE ways weeds affect crop growth and yield.

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Other parts of this question

  1. 8(b)(i)Categorize the use of weedicides as manual, mechanical, chemical, or cultural control.[1 mark]
  2. 8(b)(ii)Give TWO reasons why broadleaf weeds disappeared while other weeds remained after repeated herbicide applications.[2 marks]
  3. 8(b)(iii)Describe TWO cultural practices that can be implemented to manage weeds on the maize farm.[4 marks]
  4. 8(b)(iv)Identify TWO methods of mechanical weed control.[2 marks]

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