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Agricultural Science 2008 WAEC Past Questions

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11
Which of the following statement is not true about waterlogged soils?
  • A. such soils are heavily leached
  • B. dentrifying bacteria are more active in such soil than nitrifying bacteria
  • C. nitrosomonas yield bet in such soils
  • D. soil temperature is usually low
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12
Which of the following crops should be planted on a piece of land that has been repeatedly cropped with maize?
  • A. guinea corn
  • B. millet
  • C. rice
  • D. cowpea
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13
sources of nitrogen to the soil include the following except
  • A. lightening
  • B. urea
  • C. blue-green algae
  • D. residues of burning activities
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14
Which of the following statements about bush burning is false?
  • A. it releases mineral nutrients bound in plant tissues
  • B. it encourages the growth of fresh grasses
  • C. the heat generated destroys pests
  • D. the heat generated increases the population of soil organisms
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15
A farmer applied NPK 15:11:8 at planting. What is the percentage of potassium in the fertilizer?
  • A. 23.53%
  • B. 32.35%
  • C. 33.33%
  • D. 44.12%
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